Injection Molding Hardware: Prospects of Injection Molding Both in China and Abroad

Our country has become a major hardware processer and exporter in the world, and also become one of the world’s largest hardware manufacturing country. The marketing prospect is broad. Injection molding hardware  has become an important part of Chinese hardware industry.

Although now there are various uncertainties in China and abroad, Chinese economic development is still showing growth. Disadvantages and advantages still exist in market, but it can be said that the scenery here is fine for domestic situation.

Now molds become more and more large, which is due to the requirements of efficient production with " multi-cavity mold".

17-4PH stainless steel powder metallurgy introductory explanation

Name : 17-4PH stainless steel powder metallurgy

Profile : 17-4PH stainless steel alloy is made ​​of copper, niobium precipitation / columbium constituted hardened martensite.

This level has high strength , hardness (up to 300º C / 572º F) and anti -corrosion properties .

After heat treatment , the mechanical properties of the product more perfect, can reach up to 1100-1300 mpa (160-190 ksi) of compressive strength.

17-4PH stainless steel can not be used above 300º C (572º F) or under very low temperatures , its atmosphere and dilute acid or salt has good corrosion resistance , corrosion resistance and its 304 and 430 the same.

Applications

Offshore platforms, helicopter deck , other platforms

Food Industry

Pulp and paper

Aerospace ( turbine blades )

Mechanical components

Varieties and specifications

Rolled d8 ~ 250mm, square 8 ~ 120mm; forgings d55 ~ 250mm, square 55 ~ 200mm. Sheet, strip , sheet cake , rings , forgings , castings, precision castings, and other consultations supply .

Powder metallurgy products molding production options?

During mim powder metallurgy products, the molding is a very important step, why do you say? This is because the molding is converted into a powder aggregate having a desired shape of the process, if not molded product certainly can not be used.

Commonly used methods of forming molding, rolling, extrusion, isostatic pressing, sintering loose, slip casting and explosion forming. Here Shenzhen Sijia Yi mim powder injection manufacturers together to talk with you about molding production methods:

That powder molding material in the die pressing. When the pressing temperature typically require from about 1 ton / cm2 or more pressure, pressing pressure is too large, the impact press tool; and sometimes layered body cracks occur, scratches and defects. The maximum pressing pressure of 12-15 t / cm 2. Exceed the ultimate strength, the powder particles from crushing damage.

Metal powder metallurgy industry developments in vessel

Metal powder metallurgy development trend now is speed, which is produced using a metal object into composite materials manufacturing technology. developments mim powder metallurgy prospects, is now, in some cars, heavy machinery manufacturing, aerospace and other fields has been rapid development of outstanding, reached a very high level.

Powder metallurgy is an industrial technology, and has a very important role in China's economic development situation in which, as technology continues to improve, he has gradually entered the high-end level of techniques, in which a number of applications made important contribution, which in some shipbuilding industry, the configuration of components in use requirements with wear characteristics, the use of powder metallurgy in the process is very reasonable.

Thus, the PM has a very important role in the application, especially in the shipbuilding industry, metallurgy development prospects are very promising.

30 Minute Coconut Curry

Produce

1/2 cup     Broccoli florets

1/2 cup     Carrots

1 pinch     Cayenne or 1 dried red chili

4 cloves    Garlic

1 tbsp       Ginger, fresh

1       Onion, small

1/3 cup     Snow peas, loosely cut

1/4 cup     Tomato

Canned Goods

3 cans       Coconut milk, light

1 cup         Veggie stock

Condiments

1 tbsp       Agave nectar

1       Lemon juice, Fresh

Pasta & Grains

1 cup         Quinoa

Baking & Spices

1 tbsp       Curry powder

1       Sea salt and black pepper

Oils & Vinegars

1 tbsp       Coconut or olive oil

What is the most prominent advantages of powder metallurgy products are

PM parts in the proportion of the number can be seen in the position of the rapid development of powder metallurgy gear in the powder metallurgy industry.

The most prominent advantages of powder metallurgy are two:

(1) can be manufactured using other processes currently unable to manufacture or difficult to manufacture materials and products, such as porous, sweating, shock absorption, insulation and other materials and products, tungsten, molybdenum, titanium and other refractory

Metal materials and products, metal - plastic, double metal and other composite materials and products.

(2) can directly produce desirable or close to finished size requirements of products, thereby reducing or eliminating machining, the material utilization can be up to 95%, it can in some articles of iron and copper, so that the "provincial timber saving. "

304 Introduction

304 stainless steel is a common material, a density of 7.93 g / cm3, the industry also known as 18/8 stainless steel. High temperature of 800 degrees , with good processing properties , high toughness characteristics, widely used in industrial and medical furniture industry and the food industry .

The common market, marking methods have 0Cr18Ni9, SUS304, which generally represents 06Cr19Ni10 GB standards of production , S30408 ​​generally represents ASTM standard production , SUS 304 represents JIS standard.

304 is a versatile stainless steel , it is widely used to produce good overall performance requirements (corrosion resistance and formability) of equipment and parts. In order to maintain the inherent corrosion resistance of stainless steel , the steel must contain more than 18% of chromium , more than 8% of the nickel content .

304 stainless steel powder metallurgy is a grade produced in accordance with the ASTM standard stainless steel .

Chinese name : 304

English name : 304 stainless steel

Features: corrosion resistance , toughness

Semi-finished state : hot-rolled plate , cold drawn tubes

Obama surprises hikers in Hawaii

Several surprised hikers bumped into US president Barack Obama and First Lady Michelle, who was accompanied by his entourage of secret service agents, as they walked the Koko Head on Oahu's southeastern side on Tuesday.

Looking relaxed, the president smiled and greeted fellow hikers with a handshake.

Many of the travelers even managed to take selfies with the President.The first family was on their annual two-week holiday in Hawaii.

Proven metal powder metallurgy auto parts in the proportion of light to do

Powder metallurgy products are used forming and sintering of metal powder ( or mixture of metal powder and nonmetal powder ) is made of materials and products technology. It is a branch of metallurgy and materials science . Applications of powder metallurgy products is very wide , from general machinery manufacturing to precision instruments ; from hardware tools to large machinery; from electronics to the motor manufacturing industry ; from the military industry to civilian industry ; from the general to sophisticated high-tech technology , can see powder metallurgy figure

In corrosion resistance and high temperature performance, compared with ordinary steel stainless steel can be thinner and more compact, so as to achieve the purpose of weight reduction. Compared with castings and forgings powder metallurgy, powder metallurgy auto parts lighter specific gravity (due to pore more), plus its high precision, low cost reasons, it is used in the auto parts more widely. Lightweight cast iron castings mainly in its gravity is less than castings and forgings. In addition, the production process than cast iron cast steel excellent abrasion resistance, cut resistance, thermal resistance and vibration absorption, also superior to steel, cast iron instead of steel, forgings trend in the car manufacturing increasingly large , instead of ductile iron crankshaft forgings is the most successful example.

Auto parts supply work, the relationship between the production and operation of enterprises huge supply shortage will affect production, excess inventory, backlog of capital. For these situations, we focus on practical work in the market mechanism, to explore a reasonable balance between supply and demand of auto parts, suitable for the market economy and the establishment of the characteristics of supply and demand mechanism itself, make a good supply of auto parts production and management services for businesses. Possession of the national economy can not be underestimated, the relevant departments should closely cooperate fully imported cars function.

After tapping process of MIM powder products

After tapping MIM meet processing requirements , MIM products Before tapping process , first check the tapping machine, tapping fixture for damage , if any problem should be repaired in the new fixture comes, you should first check the workpiece whether the fixture accord . Taps distinguish between the model and the workpiece wire hole size required to operate . Before tapping the Kasi long cone head tightened , so as not to bring tapping fracture .

When tapping taps must attack through hole of the workpiece, do not hurry or blindly thinking about all of a sudden attack in the past when tapping . When operating in case of attack more difficult piece , should mobilize the rod moved back and forth direction . Tapping the process , you should always check whether tainted or tooth tapping small holes like. Taps at the rear with a new grinder mill can be used. Tapping the product of bad aside , do not mess with finished inside . Taps wear thinner , we can not continue to use .

World record set for dumpling making

With winter solstice, one of 24 Chinese traditional astronomical markers, around the corner, nearly 7000 people have begun making dumplings together at Zhengzhou's International Exhibition Center, hoping to set a new World Guinness Record for both the largest cooking lesson, as well as the largest number of people making dumplings on Dec. 20, 2015 in Henan's capital, Zhengzhou. Families, including adults and their children, ranging in age from 4 to 70 years old, take part in the event..

PM how energy-efficient?

Knowledge of metallurgy in ZCMIM are introduced to before, but there are still many people do not understand why the use of powder metallurgy, had no understanding, no used, have not tasted the sweetness never used, still stick in behind technical stage today, powder metallurgy products factory in Shenzhen ZCMIM will give you talk about some of the concepts of powder metallurgy.

     

Powder metallurgy is a series of steps as raw materials or finished products manufacturing technology, generally include two parts: 1, with a metal powder (or add other non-metallic materials) as the basic raw materials, mixing, forming and sintering manufacturing powder metallurgy materials or powder metallurgy products. 2, there is the manufacture of metal powder

     

Why mim powder injection by so many manufacturers of trust and choice, that is because it can not make or break other processes difficult to break through technical difficulties, such as porous, sweating, damping insulation materials and products, and metal - plastic, bimetallic composite materials and articles. And most critical is energy saving, he was able to create a direct line with the dimensional requirements of the finished products, most notably material utilization up to 95%.

Contrast for MIM and Traditional Process

 Metalinjection molding(MIM) is a kind of "near net shape manufacturing process", used to produce MIM parts and CIM parts. It is a blend of two kinds of traditional process (plastic injection molding and powder metallurgy).

Contrast for MIM and Traditional Process
Item	Metal Injection Mold(MIM）	PM	Precision Casting	Machining Operation	Stamping
Density	98%	86%	98%	100%	100%
Tensile  Strength	High	Low	High	High	High
Surface Finish	High	Medium	Medium	High	High
Small size	High	Medium	Low	Medium	High
Thickness	High	Medium	Medium	Low	High
Complexity Level	High	Low	Medium	High	Low
Design Tolerance	High	Medium	Medium	Medium	Low
Capacity	High	High	Medium	Medium-High	High
Range of Applying Material	High	High	Medium-High	Medium	Medium
Supply  Ability	High	High	Medium	Low	High

Compared with metal injection molding and other molding technology

MIM(metal injection molding) is a small or no cutting process(also called near net-shape). Compared with traditional casting technology, the advantages of MIM as following:

1.High surface smoothness, newest data from ZCMIM is surface R1.6 at lowest 

2.Small tolerance and high precision dimension. Current domestic metal injection molding manufacture ZCMIM can do tolerance within 0.03mm~0.05mm. Some items can do with lower tolerance after post treatment.

3.It is possible to prepare alloy materials and composite materials

4.Good stability(no stand hole and shrink hole) and reliable mechanics performance

5.Low energy consumption

ZCMM for you to analyze process characteristics powder metallurgy products

In the process the metal mechanical parts, the iron-based powder metallurgy formulation process of application is very common, the iron-based powder metallurgy formulation process is mainly the quenching process, quenching purpose is to allow the iron-based powder after martensite transformation to give specific organization, and then with a different temperature tempering, powder metallurgy products, to improve the strength and wear resistance.

To meet the different requirements of powder metallurgy products, but also by the iron-based powder metallurgy technology for the formulation of special properties of the products processed. Iron-based powder metallurgy formulation process is characterized by the use of a vibration loading powder method to change the density of distribution, making powder metallurgy distribution, to prevent uneven added to discontent, reduce cracking and failure occurs when induction hardening . Iron-based powder metallurgy formulation process can reduce high-frequency induction heating quenching frequency induction heating equipment, reduce the heating rate, reduce the hardness difference is heated and unheated areas, so that produce hardness buffers, reducing the risk of cracking.

In the iron-based powder metallurgy formulation process, and cracks should use a dedicated jig to reduce high-frequency effects, internal workpiece using cooling water to alleviate the amount of heat inside the powder metallurgy products, reducing the stress and thermal stress uneven. With iron-based powder metallurgy formulation process in production, effectively prevent the occurrence of the crack phenomenon of powder metallurgy products. Let the passing rate of the workpiece is greatly improved.

In the process the metal mechanical parts, the iron-based powder metallurgy formulation process of application is very common, the iron-based powder metallurgy formulation process is mainly the quenching process, quenching purpose is to allow the iron-based powder after martensite transformation to give specific organization, and then with a different temperature tempering, powder metallurgy products, to improve the strength and wear resistance.

To meet the different requirements of powder metallurgy products, but also by the iron-based powder metallurgy technology for the formulation of special properties of the products processed. Iron-based powder metallurgy formulation process is characterized by the use of a vibration loading powder method to change the density of distribution, making powder metallurgy distribution, to prevent uneven added to discontent, reduce cracking and failure occurs when induction hardening. Iron-based powder metallurgy formulation process can reduce high-frequency induction heating quenching frequency induction heating equipment, reduce the heating rate, reduce the hardness difference is heated and unheated areas, so that produce hardness buffers, reducing the risk of cracking.

In the iron-based powder metallurgy formulation process, and cracks should use a dedicated jig to reduce high-frequency effects, internal workpiece using cooling water to alleviate the amount of heat inside the powder metallurgy products, reducing the stress and thermal stress uneven. With iron-based powder metallurgy formulation process in production, effectively prevent the occurrence of the crack phenomenon of powder metallurgy products. Let the passing rate of the workpiece is greatly improved.

Sunrise scenery of Emeishan Mountain's peak, SW China

Photo taken on Dec. 20, 2015 shows the peak of the Emeishan Mountain at sunrise in southwest China's Sichuan Province. 

Shenzhen Metal Injection Molding Manufacturer Analyze MIM Powders

There are two main types of MIM injection molding powders. They are water atomized powders and gas atomized powders.  Following analysis of the composition and morphology  for those two powders are from a Shenzhen MIM injection molding manufacturer ZCMIM .

Water Atomised  powders for Metal Injection Molding MIM

l   Irregular shape

l   High proportion of oxide particles/impurites

l   Thick oxide layer, rich in SiO2

l   Low packing density

Gas Atomised powders  for Metal Injection Molding MIM

l   Regular, spherical shape

l   Low proportion of oxide particles/impurites

l   Thin oxide layer, typically ~2nm

l   High packing density ~65% theoretical  max

Powder particle shape of the metal powder metallurgy parts manufacturing is what?

Metal powder metallurgy parts manufacturer mainly using metal powder processing, then the metal powder metallurgy particle shape is like?

Chemical properties depending on chemical purity of raw materials and milling methods. Higher oxygen content decreases suppress performance, compact mechanical properties of strength and sintered products, so most of the technical conditions for this PM has certain requirements. For example, to allow the oxygen content of the powder is 0.2 to 1.5%, which is equivalent oxide content of from 1% to 10%.

Mechanical Properties Mechanical properties of the powder that is a powder process performance, it is important in powder metallurgy process parameters. Powder bulk density volumetric method is weighed when pressed basis; powder flowability of the powder to determine the speed and press die filling production capacity; powder compression process and the decision to suppress the difficulty of exerting pressure height; the powder moldability determines the strength billet.