Causes of injection molding process

Injection molding process presumably we have heard of, it is to have a certain shape of the model, through the pressure of the molten state of the colloid into the cavity and molding. The process also has a wide range of applications in the manufacture of metal parts for injection molding. In fact, parts of the molding process is affected by a lot of factors. The following ZCMIM will be described in detail.

The temperature of the mold and the barrel has an important influence on the injection molding process. The lower the mold temperature, the faster the cooling rate, the melt temperature decreases more rapidly, resulting in increased melt viscosity, injection pressure loss increased, and even lead to a serious shortage of mold filling. In addition, the proper choice of barrel temperature is related to the quality of plastic. In view of this, we'd better control the nozzle of the highest temperature slightly lower than barrel the highest temperature, to prevent the melt in the nozzle occurred casting phenomenon.

The injection speed injection speed, it is mainly in the cavity Nader effect of melt flow behavior. With the increase of injection rate, the melt flow rate increases, the shear effect of the melt temperature increases, the viscosity decreases, so it is good for filling the mold. Moreover, in the whole injection molding cycle, the injection speed and cooling time have a decisive influence on the performance of the product.

The above two points are the main factors that affect the injection molding process, we can according to the situation of the injection process to adjust the system, in order to ensure that the quality of the injection process.

ZCMIM can do GR2 material metal? – Solutions

The titanium alloy has a customer to ask that I can do, but can do surface treatment of plating, he asked me GR2 materials can do? It is not, GR2 is also a titanium alloy material with high strength and density, good mechanical properties, toughness and corrosion resistance is very good, this material is suitable for the machining process, why MIM technology cannot do?

Because of the hardness of the MIM process of machining to density ratio is low, the material hardness of GR2 to reach more than 40, MIM process can not do so, only suitable for machining GR2!

MIM process is the accuracy limits on hardness and density, weight MIM process is usually less than 400 grams, the precision is + 0.5%, the higher the cost of the higher accuracy requirements.

ZCMIM can also do some die-casting process products, generally suitable for us to do, we will let the project evaluation measurement and then give you a quote, welcome to the needs of a friend to visit the factory!

Powder metallurgy technology has brought great convenience for industrial production

The formation of the workpiece to be suppressed, baking and other processes, but due to technical limitations, the quality of the product is not so ideal. But now, with the powder metallurgy technology, all are not the same. It can not only solve the problems existing in the traditional industrial roasting, but also bring great convenience for the industrial production, the technology innovation makes the whole industry development.

In the absence of powder metallurgy technology, industrial production is carried out by the traditional technology, but with the increasing demands of the product, which has been difficult to meet the requirements of the. It also promotes the technology innovation, a new generation of powder metallurgy technology is mainly to metal powder or metal and non metal powder in combination, after pressing or roasting technology preparation, made of molding and material utilization rate is very high.

Powder metallurgy technology, development to promote China's industrial enterprises, using this technology to the production of products, have significant advantages in terms of precision, air permeability is before the technology can solve the many shortcomings of the traditional processing method.

Due to the advanced nature of its technology, the convenience is imagined, powder metallurgy technology only need to the mixed powder, and adding proper amount of plasticizing agent to improve the powder of molding and plasticity, can be pressed into the desired shape. In addition to some of the special requirements of the need for further processing, under normal circumstances, the burning of the parts are all can be used directly, the processing process is greatly simplified.

Iron base powder metallurgy and hard alloy production technology is different?

Iron base powder metallurgy and hard alloy production process is different? Believe that there are many friends are not very understanding, let's look at the following.

Fe based powder metallurgy is the base of iron, cemented carbide base powder is TIC, WC and so on.The production process is basically the same, mixed powder - molding - sintering - after the order processing - Inspection - package, but the process parameters will not be the same.

Fe based plastic is to reach a certain size requirements or facial requirements and process. Because of iron-based products molding elastic aftereffect, general products after sintering dimension change larger. The outside diameter of the same batch, inner diameter, or height are not necessarily reach the final product requirements and design to achieve the size and height requirements through the shaping process of. Generally used for tolerance requirements are relatively tight products.

1 mix powder mainly and powder size, size and shape and so on. There is the alloy element and lubricant and binder.

2 molding is the press tonnage, mold design, there are other related.

3 sintering is the sintering temperature, and sintering atmosphere or sintering time and other related parameters.

4 then there are some post processing. Machining, heat treatment, etc. (quenching, tempering, etc.), the surface carburizing.

What are the requirements of powder metallurgy technology?

Powder metallurgy technology can easily realize multiple types of composite, give full play to the characteristics of each element of the respective materials, is a technology for the production of high performance metal matrix and ceramic composite materials with low cost. So what are the requirements of powder metallurgy technology?

1, powder metallurgy technology can minimize the alloy composition segregation, eliminating coarse and uneven casting organization.

2, powder metallurgy technology can be prepared in amorphous and microcrystalline, crystal, nano crystal and super saturated solid solution and a series of high performance non equilibrium materials. These materials have excellent electrical, magnetic, optical and mechanical properties.

3, powder metallurgy technology can realize the near net shape forming and automatic batch production, which can effectively reduce the production of resources and energy consumption.

4, powder metallurgy technology can produce ordinary smelting method can produce with special structure and properties of materials and products, such as a new type of porous biomaterials, porous separation membrane materials, high performance structure ceramic abrasive and ceramic materials and other.

5, powder metallurgy technology can make full use of ore, tailings, steelmaking sludge, steel rolling mill scale, recycling of scrap metal as raw materials, is a kind of new technology can effectively carry out the material recycling and comprehensive utilization.

Powder metallurgy metal has a unique chemical composition and mechanical and physical properties, and these properties is conventionally casting method can not be obtained. The powder metallurgy technology can be directly made into porous, semi dense or fully dense materials and products, such as oil bearing, gear, cam, guide rod, cutter, etc.

Powder metallurgy friction reducing material

According to different matrix elements, powder metallurgy friction reducing materials are divided into ferrous materials and copper based materials. Iron and graphite powder alloy and iron - sulphur graphite powder alloy. The organization of the former pearlitic matrix and iron prime body + carbonization + graphite and pore, hardness 30-110HBS; the latter organization in addition to the same with the former organization, and sulphides, can further improve antifriction, hardness is 35-70HBS.

Copper based friction reducing material is commonly used in bronze powder and graphite powder alloy, the hardness of 20-40HBS, with good thermal conductivity, corrosion resistance and anti occlusion, but the bearing capacity is smaller than the iron base friction material.

Powder metallurgy reducing friction material generally used in the manufacture of medium speed, light load bearing, especially suitable for manufacturing cannot often gas bearing, such as textile machinery, machinery, food machinery, household appliances, such as bearing, in automobile, tractor, motor of the machine tool is also applied.

Precision casting process and mechanical processing method

Precision casting process, although in recent years the accuracy of its products and complexity have increased, but the size precision and the surface quality is still less than the injection molding process; forging process is an important development, has been applied to the connecting rod mass production. But generally speaking, the life of the forging heat treatment cost and tooling is still a problem, pending further solve; the traditional machining method, recently by automation and enhance the processing capacity, have great progress in the effect and precision, but the basic procedure still do not take off a production step by step (lathe, planer, milling, grinding, drilling, polishing and so on) to complete the shape of the parts.

The machining precision of the machining method is much better than that of other processing methods, but because of the low rate of the effective use of the material and the shape of the limited in equipment and tool, some parts not a mechanical processing to complete and production efficiency lower. On the contrary, the MIM process can effectively make use of the material, and is not limited by the shape of the product, the shape of small, high difficulty of precision parts manufacturing, MIM process is the mechanical processing, the cost is low and the efficiency is high, with a strong competitive edge. MIM technology is not competition with traditional processing methods, but to make up for the shortcomings of traditional processing methods in the technical problems or can not be produced. MIM technology can be produced in the traditional processing methods in the field of parts to play its expertise.

Powder metallurgy structure material

Powder metallurgy materials according to the different structure of base metal, divided into iron and copper based materials. Iron-based materials according to different combined carbon content of the iron sintering, sintering of low carbon steel, sintering carbon and sintering of high carbon steel, if the iron-based materials containing alloy element copper and molybdenum sintered steel and copper sintered copper molybdenum steel.

Iron base powder metallurgy structural materials made of structural parts, high precision, surface roughness value is small, do not need or only need a small amount of machining, material saving, high productivity, porous products, lubricating oil leaching, can reduce friction, damping, noise elimination. Powder metallurgy structural material widely used in the manufacture of mechanical parts, such as machine tool adjustment gasket, adjusting ring, an end cover, a slide block, a base, an eccentric wheel, auto oil pump gear, differential gear, check the push rings, tractor transmission gear, piston rings and the joint, a spacer sleeve, nuts, oil pump rotor, block sets, roller etc..

Compared with the copper based powder metallurgy material and structure of Fe based structural materials tensile strength low plasticity and toughness, has good electrical conductivity, thermal conductivity and corrosion resistance, various plating coating treatment, commonly used in manufacturing small and complex shape, size and high precision, small instrument parts and electrical appliances, mechanical product parts, such as small modulus gear, cam, fasteners, valve, a pin, a sleeve and structure.

MIM how can we stay long?

1) MIM technology as an emerging industry, is in need of intensive and meticulous farming. Run with the others behind, basically is not too long. The rise of MIM industry, promote the mobile phone industry demand for MIM products, the rapid update of the mobile phone industry upgrading, MIM industry is not to catch up. For different industries, focus on product development, the formation of their products and market survival.

2) MIM must have accumulated technology, can go further. A short time of low barriers to entry, so that we have invested in MIM factory, most MIM factory is a technology and market has borrowed from other years of precipitation factory, no accumulation and precipitation is difficult to go further. Short time resources have been exhausted, to continue to develop the need to look for new opportunities. Shandong very much appreciate a few friends to do the factory, do not do the mobile phone industry, still doing very well, others want to phone Kato no demand, their orders have been discharged into the second half of next year.

How do you get the metal powder for powder metallurgy products?

Powder metallurgy products are mainly used in metal powder sintering process through a series of production and raw materials, so the metal powder is how come?

Powder metallurgy is the preparation of metal or with a mixture of metal powder or metal powder and metal powder) as raw material, through forming and sintering, manufacturing metal materials, composite materials and products of various types of technology. The powder metallurgy method are similar, and therefore the production of ceramic, a series of new powder metallurgy technology can also be used in the preparation of ceramic materials.

In fact, the metal powder is a big concept, manufacturing process of powder metallurgy has many links, different types of powder manufacturing process also has corresponding changes. Today we simple for everyone to speak of metal powder production, the powder can be the compound of the metal or metal element as a raw material, depends on the specific use of our products to consider raw materials.

If metal compounds is metal powder can be obtained by electrolytic or chemical decomposition of the way, if only the metal element can through the high melting temperature and high pressure spray and rapid cooling of the obtained metal powder and alloy powder.

In order to meet the various requirements of the powder, there will be a variety of methods of producing powder, these methods are nothing more than to make metal, alloy or metal compounds were solid, liquid or gaseous state into powder. Various methods of preparing the powder and various methods of preparing the powder.

In the past two years, MIM technical progress is mainly reflected in what areas?

1) is the first equipment level has been considerable increase: from feeding equipment, injection machine and debinding and sintering equipment, and analysis and detection equipment and automation level, nearly three years of development over the level of the past 15 years.

2) MIM technology for the development of special mold: mold manufacturing technology from the experience of plastic mold to the MIM dedicated to the development of the mold, you can create a higher level of MIM mold.

3) feeding technology: feeding technology from wax based feed to wax based and plastic based feed coexistence direction, no longer rely on BASF feeding system.

4) metal powder metallurgy manufacturing technology has been greatly improved, water atomization, aerosol powder can replace Japan and Europe and the United States powder.

MIM application industry and future opportunities?

Consumer electronics industry over the past decade in the application of MIM products from less to more, in 2015 reached its peak, the MIM factories in the Pearl River Delta region has 90% in the consumer electronics industry, and northern area of MIM factory 90% of the factory does not make the industry, they are involved in the industry is very extensive: hardware tools, cutting tools, machine tool accessories, automotive, military, household electric appliances, building materials, hardware, medical etc. all walks of life. Wearable device is an industry, there is no way to look farther.

Reasonable price, high quality, high yield, reduce the cost, to find new opportunities between die casting and precision casting and CNC and other traditional industries, will be the new direction of the development of MIM industry. The characteristics of MIM technology is superior to the mechanical strength of die casting process, product precision casting process, the product cost is better than that of CNC process. Can also be understood as other processes are uncertain, the MIM shot. Automotive, hardware tools, tool materials, industrial products have the opportunity to field.

South Korean customers visit visit - ZCMIM powder metallurgy factory

www.zcmim.com

Yesterday, ZCMIM powder metallurgy factory to see the customer is South Korea's International. Colors visiting their company's CEO and its assistant. Customers are mainly to do Samsung, LG products. Currently there is a demand for MIM projects, the product is a mobile phone line socket, customer feedback, if the product is mass production, the biggest problem is the internal deformation.

So they choose the MIM process. The MIM process can ensure the product of density and hardness, compression molding materials and density limited the traditional process and a decrease in the, colors international customers said they are very satisfied with our factory, and for this project is very anxious, hope I as soon as the NDA sent to them, they will hair products and pictures to ZCMIM quotation and evaluation.

MIM application industry and future opportunities?

Consumer electronics industry over the past decade in the application of MIM products from less to more, in 2015 reached its peak, the MIM factories in the Pearl River Delta region has 90% in the consumer electronics industry, and northern area of MIM factory 90% of the factory does not make the industry, they are involved in the industry is very extensive: hardware tools, cutting tools, machine tool accessories, automotive, military, household electric appliances, building materials, hardware, medical etc. all walks of life. Wearable device is an industry, there is no way to look farther.

Reasonable price, high quality, high yield, reduce the cost, to find new opportunities between die casting and precision casting and CNC and other traditional industries, will be the new direction of the development of MIM industry. The characteristics of MIM technology is superior to the mechanical strength of die casting process, product precision casting process, the product cost is better than that of CNC process. Can also be understood as other processes are uncertain, the MIM shot. Automotive, hardware tools, tool materials, industrial products have the opportunity to field.

Metal powder injection molding process parameters of MIM should be how to choose?

Many MIM metal injection molding process, even if in the industry do a few years, may not be able to understand all processes have to understand, here, and we share of MIM316L powder injection process parameter selection problems, mainly include:

1, metal powder how to choose?

Sintered density of PF-3F, PF-5F, PF-10F and PF-15F four kinds of metal powders at different sintering temperatures. It can be seen that, at a certain temperature range, the higher the sintering temperature, the greater the sintering density, which changes little with the sintering temperature. In a certain range, the larger the size of the powder, the greater the sintering density. Spherical powder is beneficial to increase the density of vibration, increase the loading capacity and improve the sintering density.

2, metal powder and binder ratio?

The viscosity increases with the increase of the solid content, when the solid content reached 62% after the injection, the viscosity increased sharply, that the limit of solid content value (maximum 62%).

When the binder is insufficient, there is a gap between the powder will affect the mechanical strength of the products, the binder; excessive, solid content is too low, influence of degreasing, sintering, shrinkage rate.

3, the gate and overflow hole how to choose the design?

The gate should be higher position in space, thus reducing the melt feeding in the mold friction, reduce injection pressure, reduce the possibility of deformation of the products. In addition, the design of the flash point is also very important, the flash point is used to cold material loading in injection process, to ensure the uniformity of the products.

4, C, N and O on the sintering of 316L?

During the sintering process of C, N and O will have a bad effect on sintering 316L. Carbon has a strong affinity for chromium, generation of Cr23C6, the grain boundary decreased chromium content of solid solution, the formation of chromium depleted zone; nitrogen in stainless steel in the supersaturated solid solution, cooling in the form of Cr2N in the grain boundaries, thereby reducing the MIM corrosion resistance of the products; oxygen and chromium can form oxide film Cr2O3, and the liquid wettability is not good, the influence of liquid flow, hinder the densification process.

5, how to choose the sintering atmosphere?

This is because in Ar+H2 atmosphere, low dew point protection powder surface is not oxidized, powder C and O C-O remove more than 900 DEG C; in vacuum atmosphere, gas gap more easily excluded, accelerate the densification process; in N2 atmosphere, the dew point is not low enough, resulting in the oxide film forming powder that is not conducive to the formation of the sintered parts, hinder the diffusion of atoms.

In addition, in the process of sintering, the slower heating rate is conducive to the formation of grain boundary rules and reduce the isolation of obturator, increase sintering time, sintering density increased slightly, but the decline of the mechanical properties (grain). The increase of sintering platform at 800 DEG to 1100 DEG C, lower heating rate is a good choice!

Anti rust treatment of iron base powder metallurgy catheter

Iron base powder metallurgy sintering (including powder forging method, manufacturing to iron as the main component of powder metallurgical materials and products (iron machine parts, reducing grinding materials, friction materials, as well as other Fe based powder metallurgy material) the general process. Today we have come to understand how to do the next iron base powder metallurgy pipe rust treatment?

Powder metallurgy general pipeline rust several, oil transportation process, rust proof paper bag. This is the most common of the rust proof packaging, the advantage of the anti rust effect can be my.

Can also choose the antirust packing of the high-end, not oiled, using nano membrane blocking, has the advantages of good rust prevention effect, appearance, simple operation, no late need cleaning.

If the choice of permanent passivation and coating, the effect of passivation for powder metallurgy in general, the transport process or the need for rust, coating paint some of the time limit is more, especially the latter is the assembly.

The immersion process of powder metallurgy products how to operate?

Powder metallurgy products are formed by multiple processes, including porous antifriction oil products is very important a. It increases the powder metallurgy products, corrosion resistance, abrasion resistance, and prolong its service life. Therefore, we should strengthen the understanding of its.

The operating principle is the iron base oil bearing sintering after oil immersion treatment, powder metallurgy products into the pores of lubricating oil. When the axial rotation, and occurrence of dynamic friction heat; the bearing temperature rise, oil case of thermal expansion; from the pores in the outflow to shaft and the shaft sleeve to automatic oil supply, the formation of oil film on lubrication and reduce friction. This method of ordinary oil immersion and vacuum immersion in oil and heating oil branch.

1, ordinary immersion

Cleaned sintered products into the oil soak. The capillary force in oil, into the pores of the products. The method of immersion time, immersion efficiency is low, it usually takes several hours, suitable for oil products is not high in rate.

2, vacuum oil immersion

Clean up clean products sintered in vacuum box, sealing time to -720 mm Hg, then add oil to the vacuum box, and then heated to eighty degrees Celsius, keep twenty minutes to half an hour. Since the products connected pores in the air was pumped out, the oil can be in ten minutes in products.

Vacuum oil immersion can also to put products in vacuum box of air out, and then the preheated oil into the vacuum box, product is covered up, then the atmospheric and vacuum box connected, the oil that is quickly immersed into products pore in. By this method the immersion of high efficiency and fast speed

3, heating oil

The removal of sintered products clean to soak for eighty to one hundred and twenty degrees Celsius hot oil in an hour. Because the product is heated, the air in the pores is expanded, so that part of the air is excluded. After cooling, the remaining part of the air is contracted, and the oil is sucked into the pores. Because oil has good fluidity, high lubricity, and thus may be more oil immersed into products.

Solution to the cracking of powder metallurgy products

(1) materials integrated error

For a variety of reasons, metal powder additives are used. For example, adding a suitable lubricant mixed will enhance the compressibility, reduce demolding force. However, mixed powder added lubricant can inhibit the formation of bonding between particles, adhesives, impurity and residual air will be the bond formation have a negative effect.

(2) particle displacement

Bonding between particles initially mainly by the plastic deformation and the powder block movement formation, under ideal conditions, the densification process is a two-way, symmetrical and synchronous and will not happen between particles shifted side. Densification process after the shift will prevent the formation of bonding between particles, and can has been broken in forming the early formation of the bond.

(3) non normal plastic strain separation process

Particles will not recoverable plastic deformation. In addition to the recovery of plastic deformation will occur. The final forming stage, the pressure will reduce and eventually in the demoulding process is reduced to zero. Forming pressure vent out moment, compressive stress release, forming body embryo will suddenly from the plastic changes in the aptitude elastic stage. If the internal stress is less than the limit of the strength of the body, the crack will be generated.

(4) high tension and shearing force

Under the condition of powder metallurgy, if the forming body is formed by external or internal forces, the shear force is higher than the strength of the raw embryo, then it will crack.

(5) the cause of crack caused by material integration

Air left in the forming process of powder material, powder weight is approximately in accordance with a 2:1 ratio decreased. Inter granular pores filled with air must be in the forming process of extrusion, and must be completed in less time, the air must be from the powder matrix and design with the gap tolerance of very small mold assembly is extruded.

Powder metallurgy parts crack mainly occurred before the sintering process of pressing forming and processing process. Although crack may be in sintering becomes apparent, but the root cause of the cracks may is prior to sintering bonding between particles are relatively poor. Sintering caused by stress may crack "open", but this is likely to have been produced prior to sintering processing step. Few examples of incorrect product design may lead to sintering at higher stress level. Therefore, we should stress level may exceed the strength of the parts of the leading to mechanical failure.

Why powder metallurgy products will crack?

Why powder metallurgy products will crack? The potential crack has been regarded as having a huge impact, and often become the production of complex shaped parts, for the industry participants, enhance the obtained material performance benefits only than the weight of solving the problem of crack is slightly higher.

Detailed powder metallurgy products cracking causes and solutions:

1, the formation of cracks

Usually, a solid force separation or split into 2 or more parts, which is called fracture. Fracture can be the cause of crack, crack growth and loads.

For powder metallurgy forming body embryo, cracks can be classified as one of the following reasons:

Inter particle rupture interlock;

No particles are mutually locked.

The main reason of interlocking rupture between particles are powder blocking or stretching.

Interlock rupture may be a combination of action under tension applied or transverse shear stress or two force.

The rupture area may be deeper than the shallow surface, and may be irregular and discontinuous.

On the other hand, if by reach micro should stress intensity level of force or stress caused by stress concentration will result in the formation of the cracks. Therefore, when the transverse or horizontal powder particles crack surface of the regular force component to stress cracking, cracks appear from the outside should force or internal stress generated.

Method for measuring density of powder metallurgy

Powder metallurgy is the metal, alloy, or its oxide, carbide powder into the mold, to impose high pressure and forming, and then sintering and curing to make the required materials, products, technology. After the metal powder particles are refined, and then made into the shape of complex parts, instead of the traditional mechanical processing.

Due to the pore structure of the powder metallurgy of powder physical properties has a great influence, and products according to the demand is to bulk density, wet density, apparent porosity and oil rate as the main standards, so the forming embryoid bodies and sintered density detection is more important. In accordance with the specification: weight in sintered metal materials sintered density = sample air / (water repellent treated sample air heavy - water repellent treated sample water heavy).

The advantages of powder metallurgy using density meter are mainly the following:

Two, 1 steps to display the results of the measurement;

2, the host is equipped with RS-232 standard print interface, can be very convenient to connect the printer to output the test result;

3, with environmental adjustment function;

4, the operation is simple, convenient, fast measurement;

5, can be read directly sintered oil bearing oil rate, effective porosity;

6, fully automatic zero tracking function;

7. The bulk density of the powder metallurgical structure and the effective porosity, wet density and volume of the oil bearing alloys can be read directly;

8, with the temperature compensation settings, solution set, the density of water treatment oil setting function;

9, the use of large flume design, can reduce the suspension line of the buoyancy caused by the error;

10, according to the field operation habit, the density and volume value of the non absorbent material are read directly.

Density detection steps are as follows (with water as the medium for example):

1 of the first structure on the measuring table, empty memory.

2. To be measured powder metallurgy structural parts in the basket on a water container, water memory, at the moment, the instrument display powder metallurgy density value.

Shenzhen ZCMIM powder metallurgy company

Spring, many companies are busy recruiting, ZCMIM of powder metallurgy company as well as the need to recruit, with the expansion of business and demand, need a small partner has! Next, let's see what ZCMIM needs to recruit, right?

1, need a responsible clerk, the clerk of the production line to do the report, of course, you will be a little bit QC will be better!

2, the need for a quality management personnel, QC, is to follow the production line, and sometimes may have to travel.

3, need to recruit 2 foreign trade business, or a single.

As long as you have the ability, always wait for you to come to challenge, ZCMIM mainly for foreign trade market, do the MIM industry has years of history, every year the company have exhibitors, there is also a certain space for development, would you like to feel slightly!

Stainless steel parts polishing specific features

Polishing cannot improve the dimensional accuracy of the workpiece or geometry precision, but to get the smooth surface or mirror luster for the purpose, and sometimes also used to eliminate the luster (extinction). So what is the specific function of the polishing of stainless steel parts?

Small precision special-shaped parts and irregular parts: removal of burr, burr and batch Feng), polishing, cleaning, chamfer, enhanced surface hardness grinding at the same time to complete.

The hole in the plate size phi 0.2mm*3mm metal parts, pipe, cracks, corner, rectangular, screw teeth, not rules parts precision grinding mill.

Can be cleared to stainless steel parts, metal processing scrap, slag; front edge smooth angle; optimization of surface electroplating, welding.

German customers visiting ZCMIM

Yesterday, the German Novia (Nuo Weiya) customer visit, through the company's business translation, I learned about the German customers to ZCMIM evaluation is good.

Visit a total of three individuals, a German (project manager and Engineering), two Chinese (a executive manager and procurement: procurement is already a second look at the factory, first saw our production workshop, feel good, with their project manager said, this time their project manager specially from Germany rushed over to see your factory and evaluation of German customers to the factory ZCMIM clean, perfect management, they are do investment casting, because many products with precision accuracy is not high, we must through secondary processing, resulting in high cost and low yield.

Although the German side of the MIM process developed very well, but the cost is very high, so they considered in China to find MIM factory cooperation; to do the main customers for the products are sanitary and lock, at present of our service and factory image satisfaction is very high.

Customers today factory is mainly review supplier's strength, they want to find MIM suppliers of long-term cooperation in China, today to come visit and sincerity is dye in the wood, we will in the follow-up and service, the future is to develop a long-term cooperation customers. Look forward to the day they signed! If you would like to know ZCMIM, please contact our online customer service, to help you professional answer!

Who is advancing behind the progress of the manufacture of large parts of powder metallurgy?

America is promoting powder metallurgy large parts of manufacturing, investors settle on the growth prospects of this field, with a connecting rod, a shaft sleeve, a cylinder, a gear auto parts as the center, is to warm forming, rolling rolling forming and densification technology application of advance.

Commissioned by the University of research, National Research Institute in disseminating and applying the results, University and the National Institute of cooperative R & D, jointly organized by the national project implementation, universities and research institutes are jointly entered powder metallurgy technology innovation. The European Federation of powder metallurgy industry and society, organized the European powder metallurgy Association, established the research and development of the close collaboration system, is to the multi Nationality Enterprise development.

Asian countries outside of Japan are also being introduced for the United States and Japan, sent technical personnel to foreign countries to accept the education and training, for the growth of the automobile industry to accelerate efforts to. Japan has the comprehensive strength in the research system, technology development, production technology etc..

The advantages in the market oriented development, production management, quality, technology and other aspects of alloy. Has the world's highest levels of technology in terms of lightweight components and manufacturing complex shape parts, but compared with the United States, backward in the basic research of advanced technology, due to the high energy and labour costs. Thus, the cost is high. Compared with Europe and the United States, between the enterprise collaboration technology development rarely, the lack of a common database, new materials market is smaller than that of other countries, in the standard work on lack, in the University of powder metallurgy system research, especially iron system research is drastically reduced.

The importance of powder structure for the properties of powder metallurgy products

Powder production is the first step in manufacture of powder metallurgy, along with the continuous development and improvement of the manufacture of powder metallurgy, in order to meet the requirements of all walks of life of powder metallurgy, powder production method and powder metallurgy products are more and more, and various properties of the powder in the powder metallurgy manufacturing have following several: properties of the powder consists of powder physical properties, chemical composition, process, properties and powder structure, in which the powder structure, including the internal structure and external structure. The structure of the powder has a direct effect on the other properties of the powder and the properties of the powder metallurgy products.

From the point of view of the external structure of the powder, the powder particles have developed outer surface and inner surface. The outer surface can be seen on the surface, including all of the surface of the particle surface of the convex and concave parts and the width of the depth of the crack. The inner surface of the inner wall of the depth including more than the width of the cracks, joints and micro granules and the outer surface of the connected pores and cavities etc..

From the internal structure of the metal powder, and the majority of non metal particles are formed by grain composition. May be single crystal particles, can also be a polycrystalline structure. The actual structure of the particle is more complex than the same crystal structure of dense material. Grain growth in powder production conditions are not sufficient, polar crystals is not complete, will lead to the original powder after crushing, grinding, grain deformation and destruction. Will affect the quality and chemical composition of powder.

The future development trend of cemented carbide MIM

Cemented carbide has high hardness, high strength and high wear resistance, so it is widely used as a variety of cutting tools and a variety of wear-resistant parts. Because of the high cost of traditional pressing and sintering method, the shape of the products is simple, the machining is difficult, and the application of the hard alloy is limited. Injection molding is a near net shape technology, with high productivity, products with complex shapes, low cost. Therefore, hard alloy injection forming technology and development will expand the scope of application of the hard alloy.

At present, the MIM of cemented carbide process has successfully produced products include hard alloy cutter [42,43], micro drill, centrifugal device, nozzle, all pump parts, piston, a filter, a various kinds of sports activities, textile machinery with wire. In recent years, people directly use the aesthetic value of MIM products, production of the golf club head, watchband, watchcase and other products. The future will be a breakthrough in the nameplate LOGO, jewelry, arts and crafts.

The development of MIM technology has a great influence on the production of cemented carbide products. Superior product performance, low cost of production and the potential high profit margins will attract more and more producers and users of concern and join.

As hard alloy manufacturers have been very familiar with the process of fat, sintering and other processes, so they are still the main force for the development of cemented carbide injection molding technology. It can be predicted that the near future, with in-depth understanding of the designers and users of hard alloy injection forming technology, along with the gradual improvement of the properties of the products, hard alloy injection forming will have broad market prospects, will bring considerable economic benefits, is following after the forming of the stainless steel injection powder injection forming new development hot spots.

Introduction of powder injection molding surface treatment sand blasting

In the powder injection molding, products of all subsequent will use surface processing, we take a look at the sand blasting surface treatment is how the blasting is the use of compressed air to quartz sand high-speed blown out on the parts surface cleaning method. The factory is also called blowing sand, not only to rust, but also by removing oil, it is very useful for coating. Sandblasting for complex shape, easy to use manual derusting, efficiency is not high, the environment is not good, rust is not uniform.

Sandblasting gun general sandblasting machine have various specifications, as long as it is not a particularly small box, can put the gun into it.

The oxide skin pressure vessel supporting products - head using blasting mode to remove the surface of the quartz sand diameter is 1.5mm ~ 3.5mm.

There is a kind of processing is the use of water as a carrier, to drive the diamond sand to process parts, is a kind of sand blasting. Sandblasting is mainly manual operation. The main function of blasting surface derusting, descaling, such as heat treated parts.

Garlic Herb Roasted Potatoes

Ingredients

Produce

2 heads Garlic

1/2 Lemon, wedges

1/2 tbsp Parsley, leaves

5 sprigs Thymes

Baking & Spices

1/2 tsp Black pepper, cracked

1/4 Scant tsp Salt

Oils & Vinegars

1/4 cup Olive oil

Dairy

2 tbsp Butter

Other

1 1/2 pounds baby (small) or fingerling potatoes

the easiest and delicious roasted potatoes with olive oil, butter, garlic, herb and lemon. No deep-frying easy recipe!

Application of laser welding in powder metallurgy parts.

Due to the powder metallurgical raw materials of special properties and manufacturing process. In some areas are widely used and gradually replaced the traditional metallurgical materials, and now we consider the most is connection between the powder metallurgy parts and other parts. In the 1980s before we apply the most extensive is brazing and projection welding, but the combination of degree is not high, adapt to the high temperature high strength of occasions, so powder metallurgy parts due to the problem of welding eat cold shoulder in many industries.

With the development of technology, in the beginning of the end of 80 in the field of powder metallurgy parts welding have new laser welding join, many advantages of suddenly, also acts as a foil to the US powder metallurgy advantages. Laser welding and traditional welding methods are: depth to width ratio and narrow weld and weld with high strength, small heat affected zone, welding deformation small, effective improve the productivity also realize the welding process automation, and many other advantages.

Now technology is so advanced, each industry has a breakthrough in the field, laser welding and cutting effectively solves the problems we powder metallurgy parts and other parts are connected, I believe that in the near future, we powder metallurgy parts welding project will enter a new breakthrough in the field.

ZCMIM Shanghai exhibition scope of work

ZCMIM, Hi I wish you have a good time, every week on Monday, I believe that most companies will be open early, summed up the work of the week, and this week's work, ZCMIM is the same. This week we have a group discussion about some of the work arrangements for the Shanghai show.

Because the ZCMIM company until April 27 in Shanghai began a 3 day exhibition, recently in preparation for the exhibition to use things such as pictures, posters, name card etc.. There are some mail to be sent with the intention of customers.

In Shenzhen MIM in this industry, there are still some people who know that ZCMIM, but if want to more extended range of customers, it must be to go to the show and ZCMIM is generally take the foreign trade market, relative to the exhibition, will can better reflect the advantage of ZCMIM and attract customers eye ball!

We look forward to your arrival, in April address: Shanghai Everbright Convention & Exhibition Center

Introduction of metal injection molding (MIM) technology

Metal injection molding technology is a set of plastic forming process science, polymer chemistry, powder metallurgy and metal material science and other disciplines mutual infiltration and cross product, using the mold can be injection molded blank and by sintering rapid manufacturing structure parts with high density, high precision and 3D complex shape, can fast accurate will design thought of as having a certain structural and functional properties of the product and can directly produce a large quantity of parts, manufacturing technology industry a new change.

This technology not only has less conventional powder metallurgy process, without cutting or less cutting and economic advantages, and to overcome the traditional powder metallurgy products low density, inhomogeneous materials, low mechanical performance, not easy to forming thin-walled and complicated structure of the shortcomings, particularly suited to mass production of small and complex and has special requirements of metal parts.

Introduction of AIM technology and development status of AIM production equipment

MIM and CIM are the two major branches of powder injection molding process. The MIM is a branch of the earliest development is the most mature, known as 21 of the world's most popular parts forming technology, it did not live up to such an honor, the industry continued to develop and grow, and has the special metal injection molding equipment. Now powder injection molding process one of the third major branches: AIM, that is, aluminum alloy injection molding.

近年来，随着金属注射成形工艺的不断成熟和普及，人们也越来越关注铝合金这种具有优异功能的特殊复合金属，因铝合金种类繁多，性质差异较大，表面极易被氧化的特点，其在注射成形方面与普通金属或合金要求是不同的，于是才会出现专门的AIM——铝合金注射成形。

In recent years, with the metal injection moulding technology continues to mature and popular, people pay more and more attention to the aluminum alloy which has excellent function of special composite metal, because there are many different kinds of aluminum alloy, nature difference is larger, the surface is easily oxidized characteristic and its the injection forming and ordinary metal or alloy is different, so will appear special aim of aluminum alloy injection forming.

任何一个工艺要想全面发展，形成一种产业，必须要通过生产设备的改进和升级来为企业提高生产效率，AIM也不例外，最初它是没有专用的设备的，传统粉末冶金和注塑行业通用生产设备以及金属注射成形专用设备的都曾被用于该工艺中。但是它有其独特的原料特点，那些非专用生产设备都无法很好满足其正常生产需要，即使勉强可以使用制品的质量也大打折扣。

Any process to comprehensive development, the formation of an industry, must to the improvement and upgrading of production equipment for enterprises to improve production efficiency, the aim is no exception. Originally, it was no special equipment and traditional powder metallurgy and injection molding industry, general equipment manufacturing and gold belongs to special equipment for injection molding have been used in the process. But it has its unique characteristics of raw materials, those non dedicated production equipment can not be very good to meet its normal production needs, even if the product can be used to the quality of the product is also greatly reduced.

Solutions for product appearance problems

Generally in the MIM process, by powder injection molding products, usually have the appearance of some problems, which scratched, gap, fuzz, dust, pinhole, hole Phi Feng the product appearance, these problems arise, the factory should give what solutions? How to rework it?

If scratched, gap, fuzz, dust, pinhole, Phi front similar to the appearance of the problem, according to the product of the seriousness of the situation to verify that the project is responsible for people on the evaluation, verification if mild and not to affect the appearance of are generally through, if very serious, some of which can rework, or rework not only abandoned.

And one point to note is that if there is a problem with the appearance of the product, we must negotiate with the customer, if look bad product accounts for a large proportion, it is in these metal parts production in which a link need improvement and adjustment. Above is the Shenzhen ZCMIM powder injection molding company summarized some of the solution for the appearance! You are welcome to visit our factory at any time!

The prospect and analysis of the development of MIM industry in Europe and America

With the development of MIM research, and the development of new binder, flour milling technology and the continuous progress of the process, to the beginning of the 90's has been realized. After 20 years of efforts, the MIM has become the powder metallurgy, the field is developing rapidly, the most promising a new near net shape technology, known as "the most popular metal parts forming technology" one of.

After nearly twenty years of development, in 2003 the global MIM product market value reached about $1 billion.

By geographical division, the United States accounted for 55%, followed by Europe and japan. Currently a total of around the world more than 500 companies engaged in metal injection molding products production and sales, in addition to about 40 MIM powder supplier, 20 of MIM feedstock supplier.

According to statistics, the global MIM industry's forming capacity has more than 700 sets of injection molding machine, 500 furnaces, 300 sets of mixing machine.

Marko Maetzig detailed analysis of the European situation in Europe there are 120 companies and 30 research institutions engaged in the work of MIM, with 250 sets of injection molding machine, the annual consumption of 1100 tons of feed.

Europe's MIM 38% from the traditional ceramic industry, 27% from the plastic industry, 8% from the traditional powder metallurgy and metal cutting processing industry, 5% from the foundry industry, and another 14% for the newly formed company.

Japan now has a total of 20 ~ 30 MIM company, Japan's MIM market in recent years, showing a steady upward trend. Although in 2001 than in 2000 declined, but overall, its total sales showed a steady growth trend.

Mechanical blasting program introduction

The shot is to use high-speed rotation of the impeller to small steel shot or small iron balls thrown out high-speed hit parts of the surface, so it can be removed parts of the surface of the oxide layer. General blasting for irregular shape, several polishing head around with high efficiency and low pollution.

Repair, shipbuilding, blasting, blasting is widely used. But either shot or grit blasting, are used in the form of compressed air. Of course not shot on high speed rotation of the impeller can not be. In repair, shipbuilding industry in general, shot (shot) use in steel plate pre - treatment (before application of paint and rust); (repair, shipbuilding industry is iron ore) and more sand in forming the ship or segment, the role is the plate on the old paint and rust removing and re painting. In the repair, shipbuilding industry, the main role is to increase the blasting and blasting plate coating paint adhesion.

In fact, casting cleaning member is not only with the shot, to the large general first roller sand cleaning, is the casting of the riser after resection of put in the drum roll, composed of parts in the drum collide with each other, the sand surface most first clear off another shot or shot peening.

About 0.1 ~ 2.0 or most ~ 3.0 in shot blasting is used motor drives the impeller to rotate by the centrifugal force effect, the diameter of balls (cast pill \ cut pill \ stainless steel balls to be thrown to the workpiece surface and the workpiece surface to achieve certain manufacture in a rough degree, so that the workpiece become beautiful, or changing the workpiece welding stress compressive stress and improve workpiece service life. Almost used in mechanical field, shipbuilding and ship repairing automobile parts for aircraft components guns tank surface bridge steel structure of glass steel pipeline and so on. Blasting (pill) is to use compressed air as a driving force for the diameter in the 40-120 sand shot to the workpiece surface and the workpiece to achieve the same effect.

Different pellet size, to achieve the treatment effect is not the same. Key proposed: shot peening can also play a role in strengthening. Now domestic equipment into the a misunderstanding, think only shot in order to achieve the aim to strengthen the. \ USA Japan enterprise for enhanced is shotblasting and! Each have each advantage. Than as a tower of ivory gear such artifacts, blasting the pill angle can not be changed, can only change with frequency conversion speed. But it is processing a large amount of, speed, and shot peening is just on the contrary, blasting effect is not shot peening effect.