2016年6月29日星期三

Where is the difficulty of powder metallurgy technology?


Powder metallurgy is now common in all kinds of industries, machinery, industry and some new development energy will also be used in powder metallurgy parts, powder metallurgy technology, forming, sintering is the basic process of powder metallurgy. Today, what is the difficulty of powder metallurgy technology?

1, the traditional powder metallurgy iron parts - gear as an example
A lot of time on the mechanical properties of the requirements is not high, on the size of the accuracy requirement is high, the general density in 6.9~7.1 is can the, the forming process requirements is not high, the sintering process requirement is high, and prevent the sintering deformation, can add Cu anti sintering shrinkage.

With the development of technology, the high-performance powder metallurgy iron-based parts demand more and more high, which must to improve the density of powder compacts, which the forming technology put forward higher requirements, the development of warm compaction, high velocity compaction technology, the density of the component can achieve 7.2-7.4.

To further improve the mechanical properties of powder metallurgy parts, also need to improve the compact density, which must be from the powder is prepared to consider, and milling technology of powder pre processing technology has become the focus, and now the quality of water atomized iron powder, the plasticized powder processing, compact density can be up to more than 7.5, which is the highest level of modern powder metallurgy parts and ten years ago is unthinkable.

2, other powder metallurgy material difficulties
Other powder metallurgy materials are the same, it can be said that the powder, forming, sintering an. Of course milling method in a hundred, forming method speak ten, sintering method are also many, the ultimate principle is to take the most economical method to meet the requirements of the premise.


Powder metallurgy technology has a significant energy saving, material saving, excellent performance, high precision and good stability, and a series of advantages, is very suitable for mass production.

MIM process manufacturing


MIM process requirements and metal powder and a binder, and then at a certain temperature by appropriate methods of powder and binder is mixed into a homogeneous injection molding feedstock, after granulation in the injection molding machine injection forming, the forming blank after degreasing Sintering Densification of the final product.


The MIM machining can be directly formed into complex geometry structure of embryo, through degreasing sintering can reach precision size structure, has good compactness; high density, uniform inner tissue can pass to the following surface treatment to achieve a good finish; mass production with low cost production efficiency to be high.

MIM process manufacturing


MIM process requirements and metal powder and a binder, and then at a certain temperature by appropriate methods of powder and binder is mixed into a homogeneous injection molding feedstock, after granulation in the injection molding machine injection forming, the forming blank after degreasing Sintering Densification of the final product.


The MIM machining can be directly formed into complex geometry structure of embryo, through degreasing sintering can reach precision size structure, has good compactness; high density, uniform inner tissue can pass to the following surface treatment to achieve a good finish; mass production with low cost production efficiency to be high.

2016年6月28日星期二

Powder metallurgy parts how rust?


Powder metallurgy parts in the process of production and processing of the need for the rust of the dense material surface rust treatment, dense material anti rust liquid MJ316, rust treatment, does not affect the post order processing.
Ingredients: film forming material, antioxidant, etc.

Performance characteristics: water-based, coated with good resistance to high temperature, for different parts, there is a certain ability to resist strain;
Black and non-ferrous metal surface rust, oxidation.

Scope of application: cast iron, iron base powder metallurgy products, powder sintering dense materials, machining parts and other surface rust treatment.
Environmental safety: the solution for the environmental protection water soluble rust solution; do not produce volatile toxic substances; accidentally contact with the body,
Please wash with plenty of water first.

Use before mixing or shaking even after the solution, immersion or spraying on the surface of the metal drying (drying) can be,
Anti rust period of up to 18 months - 30 months.
Can be diluted with water. This product should not be mixed with other anti rust products.
Packaging and storage: 10/25KG barrels; store in a cool place, sealed.

Validity: 6 years and 1 months.
Performance parameter:
Appearance: dark liquid;
Thermal stability: < 180;
PH value: 8-10;
Viscosity: 12cps;
Specific gravity: 1.05;

Flash point: more than 90 DEG c;

What are the disadvantages of powder metallurgy process?


What are the disadvantages of powder metallurgy process? Today let ZCMIM powder metallurgy manufacturer to explain it to you!
1) the inside of the product has a total pore;
(2) the strength of ordinary powder metallurgy products is lower than that of the corresponding forging or casting (about low 20%~30%);
3) due to the forming process of powder flow is far less than the liquid metal, so the product structure and shape of a certain limit;
4) the pressure needed to press forming is high, so the products are limited by the ability of the pressing equipment;
5) high pressure die cost, is generally only suitable for mass production or mass production.

mim parts


In powder metallurgy structural parts, forming the sintered products smooth surface, through magnetic polishing, electroplating, coating and subsequent treatment increased smoothness and protective layer, can also increase the heat treatment increased the hardness of the products performance. MIM parts Powder metallurgical structure of a large number of applications in a wide variety of glasses frame, mobile phone parts, gears, and robot parts and our daily necessities;

powder injection molding process 6


powder injection molding process is using metal powder as raw materials, such as stainless steel, iron, low alloy steel, using powder metallurgy technology to manufacture various structural parts, powder metallurgy parts is with the mold, so parts of the contour and the consistency of shape and size are very good, by way of the binder removal sintering.

2016年6月26日星期日

Brown Marks in MIM Machining Process


MIM process manufacture may understand that brown marks is a quite common defect in metal powder  injection molding process. This article is to discuss reasons for brown marks based on lastest experience of UnmannedAircraft parts machining project.
Phenomenon:
Finish product’s surface appear black and yellow stripes

Causes :
- mould or material temperature is too high
-stuck material  too long in pipe

-injection pressure is too high, shear heat
-location of mould vent groove is inappropriate or too small
- too fast speed of screw rotation, back pressure is too high
- additive with improper formula, poor thermal stability

www.zcmim.com

Black Specks in MIM Machining Process


MIM process manufacture notes that black specks is a common defect in MIM process. Today we would like to discuss the reason for black specks based on our last experience of Unmanned Aircraft parts machining project.
Phenomenon:
Finish products’ surface with black spots
Causes :
-mixed paper scrap, lines, or dust into material when pour material into the cylinder
-not clean up the material barrel, screw, feed tube, nozzle  during refueling
- improper process lead to mix with foreign matter

- the mold surface is not clean
- choose wrong pigment (cracking)

www.zcmim.com

2016年6月23日星期四

High precision and high technology to further enhance the bearing demand


Although in recent years, China's bearing development and progress, but compared with the world's bearing industrial power, there is a certain gap between China's bearing. The main performance is high technology, high precision, high added value of the product ratio is low, the stability of the product needs to be further improved and improved. Affected by the impact of last year's global economic situation, China bearing manufacturing industry have a certain impact, bearing orders greatly reduced, year ago few orders reduces the general around, so that the original market overcapacity in the formation of more intense competition, a threat to most of the enterprises.

With increasing the degree of policy support, I believe China's bearing industry development will usher in the spring, will accelerate the process of domestic high-end bearings, provide a solid foundation for China's heavy equipment manufacturing made entirely of.

China is actively promoting the development of high-end equipment manufacturing industry, with high technology and high precision end bearing demand will further increase, which requires domestic production enterprises and constantly improve the level of technology, speed up industrial restructuring and upgrading, and high-end imported bearings to narrow the gap between the quality, realize the market of high-end bearings in China.

The stability of the metal powder properties, especially the stability of the powder property directly affects the quality of the powder metallurgy products. The reason, in addition to the daily production process strictly control the chemical composition, particle size and particle size composition of the reduction iron powder, the main should be in the reduction of iron powder in the factory before the powder mixing process in-depth study.


It is reported that China's reduction of iron powder production continued to grow, varieties in the expansion, the quality is improving, the market is well developed. But. As the reduction of iron powder manufacturing raw materials prices, metal powder manufacturing industry operating pressure. Metal powder metallurgy manufacturers should increase the intensity of technical reform, optimize the production process, reduce production costs. Expand the application of reduced iron powder, so that China's metal powder manufacturing industry to maintain stable and rapid development.

2016年6月22日星期三

Unmanned aircraft parts OEM-ZCMIM Powder metallurgy injection molding


ZCMIM Powder Metallurgy company, is a professional manufacturing MIM powder metallurgy injection moulding Unmannedaircraft parts OEM, mold and other professional production, sales and service of humanity as one of the enterprises. With one-stop service limited liability company, factory production equipment has: sintering furnace, vacuum, injection molding machine, degreasing furnace, mold equipment: milling machines, grinding machines, mirror lighter, computer gongs, wire walking, go wire and other equipment.


Village of the products material 316L stainless steel, HP17-4, Fe and so on, products (mobile phone keypad card groove, a gear, a glasses Parts, coffee machine accessories, notebook computer rotation shaft, hand act the role ofing bracelet, and lock accessories, headset, medical accessories, screws, fiber base, precision metal parts, etc.) MIM powder metallurgy is injection molding, manufacturing parts of many with complex, and other special-shaped shape features such as: a variety of external cutting groove, externally threaded, tapered, cross hole, blind hole etc..

Injection molding operation method


Because the composition of raw materials processing is not the same, so it may be in the operation to be fine tuning. However, a general set of procedures down the main raw materials, heating, plastic injection molding, mold cooling, the final release, and so on.www.zcmim.com

Injection molding is mainly as long as the processing of a certain shape of the finished product, then it is to match with a lot of mold. The pressure drop of the machine has been melted by the flow of plastic injection into the mold, and finally after cooling to produce finished products. His main work principle is the solid plastic after heating melt can flow, and through a certain pressure into the machine mold, mold and then passes through a cooling, and finally demoulding can get the inner cavity of the mold and the same product.

Injection molding can be applicable to all the plastic products, work efficiency is very high, because the general program as long as a few minutes to complete and quality of the finished product can also from the light of a few grams of the heaviest to tens of kilograms, can complete shape is very complex and type size is very accurate, can be added with metal inserts of the finished product.


Because the injection molding operation is very simple, and the output of the finished product is also very precise size. So now is very popular with everyone.

2016年6月21日星期二

Profile accuracy of powder metallurgy


ZCMIM is one of the largest domestic Hangzhou powder metallurgy gear production, with the advanced machinery and equipment, strong technical force and achieved leading position in technology and quality, are sold throughout the country and overseas market. Following the presentation of a powder metallurgy gear tooth profile precision:

Tooth profile accuracy of powder metallurgy gear without finishing:
1 sintered gear tooth profile accuracy can be controlled at the JIS6 level (the old standard).
2 heat treatment gear tooth profile accuracy can be controlled at the JIS7 level (the old standard).

After finishing the gear, the tooth profile accuracy will be greatly improved:
1 sintered state precision can be controlled at the JIS4~5 level (the old standard).
2 heat treatment state precision can be controlled in the shape of the JIS6 level (the old standard)


What is the basis for the design of powder metallurgy gear?


To help customers understand the characteristics of powder metallurgy gear, deepen the understanding between the two sides, to facilitate communication between the two sides, as follows:
Powder metallurgy gear material:
1. Powder metallurgy gear material is suitable for standard of powder metallurgical materials, powder metallurgy materials have a variety of materials standard. Most countries and some large companies have their own standards, due to the fact that Japan and the United States in Powder Metallurgy Research walk in the forefront of the world, so the widely adopted standards of materials used is JIS (Japanese), the MPIF (USA) two standards.

2. Gear usually on strength have certain requirements, so the selection of materials for better performance, over a wide range of materials used in the gear is Fe-Cu-C-Ni materials. (the meet JIS SMF5030, SMF5040; comply with the MPIF FN-0205, FN-0205-80HT); manufacturers to choose the Cu, Fe-Cu-C material.

2016年6月20日星期一

MIM parts


In powder metallurgy structural parts, forming the sintered products smooth surface, through magnetic polishing, electroplating, coating and subsequent treatment increased smoothness and protective layer, can also increase the heat treatment increased the hardness of the products performance. Powder metallurgical structure of a large number of applications in a wide variety of glasses frame, mobile phone parts, gears, and robot parts and our daily necessities;

Powder injection molding process


Powder injection molding process is using metal powder as raw materials, such as stainless steel, iron, low alloy steel, the use of powder metallurgy technology to manufacture various structural parts, powder metallurgy parts is in the mold production out of, so parts of the contour and the consistency of shape and size are very good, by way of removing sintering binder.

2016年6月19日星期日

MIM Process


The general sequence of operations involved in the MIM process is shown schematically in the following organigram:

The component powders are mixed, together with lubricant, until a homogeneous mix is obtained. The mix is then loaded into a die and compacted under pressure, after which the compact is sintered.

An exception is the process for making filter elements from spherical bronze powder where no pressure is used; the powder being simply placed in a suitably shaped mould in which it is sintered. This process is known as loose powder sintering.

Metal Injection Molding Supplier ZCMIM


Introduction In the traditional PM process it is normal to produce after sintering a part having dimensions very close to those of the original compact.In this way it is not difficult to ensure close dimensional tolerances,Fundamental requirements of MIM in each step of the process:MetalsPowders,Binders,Mixing,Moulding,De-binding,Sintering,Post-sintering operations,Mechanical properties of MIM components

2016年6月16日星期四

Short Shot in Metal Injection Molding


It is well known for metal injection molding supplier that short shot is a very common defect in powder injection molding process. Today we would like to discuss the reason for short shot during MIM process. Welcome your supplement.
Phenomenon
--material is not completely filled the cavity
Possible reason for short shot in injection molding
l   Inadequate  measurement set
l  injection pressure is too small
l  injection speed is too slow or injection time is too short
l  mold temperature or tube temperature is not enough
l  the back pressure is too low or no back pressure caused screw idling
l  too much release agent
l  Too short  flow distance or bad  illiquidity of material

l  sprue or runner is too small

Burrs in Metal Injection Molding


It is well known for metal injection molding supplier that short shot is a very common defect in powder injection molding process. Today we would like to discuss the reason for short shot during MIM process. Welcome your supplement.
Phenomenon:
Material overflow from mould cavity

Possible reasons for burrs
- measurement set
- injection pressure is too great
-Insufficient clamping force
-mold or feed tube temperature are too high
-Bad liquidity of material
- crystallization rate is too slow
- bad parting line
 airtight 

2016年6月15日星期三

Steam treatment process in powder metallurgy process


In the powder metallurgy process, for it is refrigeration compressor steam treatment on the sealing process and increase the tightest, namely the powder metallurgy parts placed in a heating furnace at a certain temperature, certain amount to pass into the furnace in the supersaturated water vapor, in part around the existence of a large number of water vapor.

Those who come into contact with the surface of the steam iron atoms, including the outer surface and the inner surface of the connected voids occurs, oxidation reaction, generating a layer of oxide film, the main component of this layer of oxide film is Fe3O4, Fe3O4 is a body centered cubic system, the density of 5.16g/ cm3, the Fe3O4 of iron than the volume ratio, the internal parts of the connectivity gap closed, achieve the purpose of sealing parts, increase air tightness.


Due to the oxide film and cover in the parts of the substrate surface, very dense and strong adhesion, resulting in the environment of water vapor and corrosive medium is difficult to enter the parts inside, to reach a good anti rust function. Due to the high hardness of Fe3O4 and Rockwell hardness of pure Fe3O4 around 50HRC, processing parts of the apparent hardness reaches more than 60HRB, is helpful to improve the base parts surface hardness, wear resistance, anti abrasion, tensile strength can also be improved, steam treatment, the tensile strength of iron base materials increased 40-50%.

Powder metallurgy is very active in the market.


Yesterday our boss has been said to me, how recently there are always people to join we this group, I took a look at what we always call is: ZCMIM discussion groups, this is that a problem the, first to understand a lot of MIM industry, of course, does not rule out some other industries or topics. To tell the truth now MIM powder metallurgy market than before to expand a lot, but also on behalf of the future development of the market will be better!

Powder metallurgy has been able to develop rapidly in today's market, because it has a lot of advantages. Powder metallurgy products appear as the development of modern society has brought very big role in promoting in various industrial fields, powder metallurgy products play the strength of its own, such as in the rapid development of automotive production, powder metallurgy process for its provides all kinds of advanced accessories products, improve the performance of the car. In fact, powder metallurgy products in the market has very large development potential, because it can accurately grasp the user's needs, to meet the use of all aspects of the user so that it can occupy a very important position in the market.

2016年6月14日星期二

Metal injection molding suppliers


Tebo Sheng Electrical Co., Ltd. is mainly engaged in new technology, new materials development, precision metal parts of the R & D and metal injection molding production sales, suitable for large-scale production of a variety of small, difficulty of complex shape parts, materials include stainless steel, iron nickel alloy material, the hardness of the alloy, tool steel, products widely used in the electronics industry in, cars, air hole space, military, medical, commodities and mechanical fields, for customers to provide from product design, product development, small batch pilot to mass production one-stop solution, a final product for customer in the competition ability to provide the powerful strategic support.



MIM accessories


Production of MIM parts, mainly in the field of application, the automotive industry parts, such as the ignition lock control components, turbocharger rotor; cable connector for electronic industry, electronic shell; and our daily; such as case, strap buckle and all kinds of mobile phone parts; with application material range is wide, production of high density and uniformity, good surface finish, complex degree of difficulty can be achieved; batch production cycle is short and other advantages.

2016年6月13日星期一

Not Powder Injection Molding Process, PC Used in Plastic Injection Molding


Though both MIM and plastic injection molding are injection process, but their materials are completely different. Now let’s see the characters for PC used in plastic injection.
Characters for PC in plastic injection molding can be conclude as follows:

1. Has a prominent impact toughness and creep properties, has high heat resistance, cold resistance is very good also, brittle temperature - 100
, the  tensile strength is equal to  nylon. PC has much higher elongation and elastic modulus as well as prominent impact strength. Colorless, transparent, good coloring, better heat resistant than  nylon and methanal. Creep resistance and good electrical insulation, good corrosion resistance and abrasion resistance; low water absorption, small shrinkage, good stability.  PC can be used for all kinds of gear, turbine, rack, CAM shaft, pulley, bearings, core, transmission chain, nuts, washers, pump impeller, chimney, container, etc
2. Not alkali resistance, amine and arene. It maybe craze by stress, easy to produce stress concentration (and internal stress), and highe requirements of molding conditions.  Easy to hydrolysis in high temperature,  poor compatibility with other resins.; Poor liquidity, sensitive to temperature change, fast cooling.
3. Cylinder temperature is very important to control the quality of plastic parts. Low temperature will cause starving and matt surface; occur silver and  filaments at high temperature.
4. In case of polycarbonate material contains water, it will seriously affect the flow of the material performance. Therefore it must be dried, commonly at 110 ~ 110 temperature for 6 ~ 15 h.

If you also would like to know MIM metal injection molding process, you can go to website:  www.zcmim.com. A Chinese metal injection molding supplier with more than 8 years experience can offer you  professional advice and best solutions

Not Powder Injection Molding Process, PF Resin Used in Plastic Injection Molding


Though both MIM and plastic injection molding are injection process, but their materials are completely different. Now let’s see the characters for PC used in plastic injection.
Characters for PF Resin in plastic injection molding can be conclude as follows:
1.      Mechanical properties is very high, big rigidity, small cold flow property, high heat resistance (above 100 ℃), low friction coefficient under water lubrication (0.01 ~ 0.03).  Good electric properties and ability of resistance to acid and alkali corrosion, no deformation because of the change of temperature and humidity. Easy to molding,  low cost. It is  commonly used as car inner decoration.
2.      The disadvantage is that brittle, tonal limited, poor light fastness,  small arc resistance, not resistant to strong oxidizing acid corrosion.

If you also would like to know MIM metal injection molding process, you can go to website:  www.zcmim.com. A Chinese metal injection molding supplier with more than 8 years experience can offer you  professional advice and best solutions

Zcmim metal injection molding suppliers


Metals offer a diverse range of properties and can be machined conventionally or additively . For many of the components we see, the production method will be casting or machining and, as such, prototyping by the same method has distinct advantages. However, Metalinjection molding process is gaining ground as parts start to be designed exclusively for this process.ZCMIM is the best metal injection molding supplier in China.

Powder injection molding process


Powder Injection Molding process manufacturing is only one part of the process. Post manufacture options are just as important to create the perfect finished part and must be considered early on as an intrinsic part of the process. At ZCMIM, we can provide a whole raft of options for post-manufacture, which may include the addition of inserts, screen printing, painting, polishing or protective coatings such as anodizing. Specifically, machined parts may be manually dressed smooth, left natural, primed, powder coated or painted as required.

2016年6月11日星期六

A new powder metallurgy technology is developed in the United States.


According to the China national defense science and technology information network reported that the United States to develop a new type of tungsten alloy penetrators is expected to replace the chromium depleted uranium alloy.

Massachusetts Institute of science and Technology (MIT) developed by researchers a new tungsten chromium powdermetallurgy alloy W-7Cr-9Fe can replace wear armor of depleted uranium alloys. Test results show that W-7Cr-9Fe alloy nano indentation hardness up to 21 Japa, is approximately two times as that of nanocrystalline Fe based alloy or coarse grained tungsten, far higher than the current commercial tungsten alloy.

The preparation process of the alloy is: firstly, preparing the nanometer crystal powder, and then making the required shape. The powder is prepared by high-energy ball milling powder metallurgy process, including repeated shearing to make the alloy powder mixed, and accompanied by the thermal activation recovery process, so that the alloy can be recovered to the equilibrium state.


The molding process using the electric field assisted sintering hot pressing process, the researchers pointed out that when the processing time is 1 minutes, the temperature is 1200 degrees Celsius, the alloy crystal structure is good, and the highest hardness. The excessively long processing time and high temperature can cause the metal to become thicker and the strength decrease. The micrographs showed that the grain structure of W-7Cr-9Fe alloy prepared by MIT can reach 130 nm.

The development history of MIM Technology


Study on MIM technology in our country began in the eighties of the twentieth century, there have been central iron and Steel Research Institute, Beijing University of science and technology, Central South University, Beijing powder, Beijing Nonferrous Metals Research Institute, Guangzhou Institute for nonferrous metal, Ordnance Department v.2, 53 and other scientific research units to carry out the research of MIM technique. At that time, due to the lack of capital investment and foreign technology blockade, did not make a breakthrough.

During the Ninth Five Year Plan period, in the national "863 Plan", national scientific and technological plans, national defense and the supporting scientific research plan and National Natural Science Foundation funded, MIM research breaks through the technical challenges, made a series of innovative achievements. To the end of 1990s, the formation of small-scale enterprises.

Entering the new century, China's MIM industry has a rapid development trend. Science and technology personnel of the Ministry of weapons industry to organize metal materials, non-metallic materials for MIM technology research. On the basis of the previous research and small batch trial production, the MIM technology is the first in China to complete the process of the development of the laboratory to the industrialization, and the application of the technology is more mature.

 In 2001 introduced German advanced MIM professional equipment established the first industrial scale MIM production line, to start mass production of MIM products, for military equipment upgrading produced a lot of MIM parts, made outstanding contributions to the construction of national defense. At the same time for the domestic MIM industry has trained a large number of technical personnel.


2005 start in the Yangtze River Delta, the Pearl River Delta has a small number of MIM manufacturers built, when the scale is relatively small, began mass production of MIM products.

2016年6月7日星期二

How much lower of the MIM to Tradtional technology?


MIM (Metal Injection Moulding) is essentially a technology for producing complex shape parts in high quantities. If the shape allows the production of the part by, for example, conventional pressing and sintering, MIM would in most cases be too expensive.

However, if the required number of complex parts is higher than a certain amount MIM is cheaper than machining.


The effect of the volume production on cost shows that, for example, for the smallest part weighing 4.5g the cost per part falls from $1.4 for an annual production of 250,000 pieces to $0.2 for 3 million or more.

What are the best Chinese metal injection molding supplier?


Metal powder injection molding technology is a new type of metal powder metallurgy the modern plastics spray forming technology into the field of powder metallurgy forming near net shape forming technology. The basic process is: firstly, the solid powder and organic binder, uniform mixing, granulating after plastic state under heating (~150 C) for injection molding machine injection mold cavity forming method of curing, and then decomposed by chemical or thermal forming blank in binder removal, finally get the final product after Sintering Densification. 

Compared with the traditional process, which has the advantages of high precision, uniform structure, excellent performance, low production cost, its products are widely used in customized stamping parts, electronic and information engineering biological, medical, office equipment, automobile, machinery, hardware, watches, sports equipment, weapons and aerospace industries. At present, there are several Chinese best powder metallurgy supplier such as ZCMIM,Haimeige etc..


2016年6月6日星期一

Can PA(Poly A) for MIM Powder Metallurgy?


Do you know how to make Apple watch adapter?. It  is  made by metal injection molding process. Besides, metal injectionmolding can OEM custom stamping part.  Then can it make PA  products like plastic injection molding?
The answer is No…
Though both are injection process, but materials are completely different. Now let’s see the characters for PA used in plastic injection.

High fatigue strength and rigidity, good heat resistance, low friction coefficient, good wear resistance, generally suitable for medium load with temperature 100 ~ 120
or less. It can be used for  wear-resisting mechanical transmission parts which work in less lubrication or no lubrication or conditions
Great  warm-suction, less liquidity after absorbing temperature, easy appear bubble and silver silk defect. It should to dry before injection molding, drying temperature is 70 ~ 80 for 4 ~ 6 h.

Large scare of molding shrinkage, high shrinkage rate, easy appear shrinkage, dent and deformation problems, request stable molding condition.
Crystalline material has high melting point. The melting temperature range is narrow, poor molten stability. With temperature over 300 for more than 30 minutes, it is easy to decompose.

If you also would like to know MIM metal injection molding process, you can go to website:  www.zcmim.com.   A Chinese metal injection molding supplier with more than 8 years experience can offer you  professional advice and best solutions.