What accessories are suited for metal powder injection molding technology?

1.What is metal powder injection molding technology?

 

In the world of powder metallurgy, metal powder injection molding (MIM) is a type of near net molding technology. Six processes make up the MIM process: producing the powder, combining it with the binder, injection molding, adding the degreasing and debinding agent, sintering and curing, and finishing.

 

The details are as follows: MIM manufacturing needs a very small metal powder particle size, generally in the range of 0 to 30 microns, by ultra-high pressure water atomization method or gas atomization method; Mixed powder and binder: the metal powder and organic binder are fully mixed into particles, and the mixture particles are heated into a plasticized state; Injection molding: through the injection molding machine to squeeze the mixture into the mold cavity, forming the parts of the initial blank; Degreasing binder: by chemical or thermal decomposition method to remove the binder in the parts billet, to get only metal or only a little binder residual parts billet; Sintering and curing: the parts are sent to the sintering furnace for curing to further remove the residual binder; Post-treatment: through quenching heat treatment, chemical heat treatment, steam treatment and other means to reduce the internal pores of parts, improve the density of parts, improve the strength of parts, corrosion resistance and wear resistance, etc., to form the final parts.

 

2, What accessories are suited for metal powder injection molding technology?

 

China MIM is currently utilized extensively in a variety of products, including watches, minor medical devices, sports equipment, light weaponry, and other items. MIM technology, which is one of the efficient complementary technologies to traditional machining, can use materials and make products with complicated structures more effectively than traditional machining.

 

The processing applicable to MIM technology can be classified into the following situations:

 

1, in the traditional cutting or grinding process, material loss is very large, and the processing period is relatively long parts, suitable for MIM technology to reduce the cost.

 

2, MIM can be mass production, meet certain mass production conditions, but the demand is lower than the cost of mold opening parts suitable for MIM technology.

 

3. For metals that are difficult to cut, such as titanium and nickel alloy, MIM technology can be considered for manufacturing. The precision of products will be improved compared with traditional processing, and materials will be greatly saved.

 

4, with complex geometric shape, such as surface thread, klooping, cross passage and other parts, such parts in the traditional powder metallurgy is difficult to achieve, in the cutting process needs to change the processing station of multi-axis parts or multi-reference parts, suitable for MIM technology processing.

 

5. Parts that need to be processed by a combination of different materials, such as parts processed by a combination of metal and ceramic materials, or parts superimposed by different materials, such as hard magnetic - soft magnetic, magnetic - non-magnetic, conductive - insulating materials.

 

3, What materials are suitable for metal powder injection molding technology?

 

MIM technology is applicable to a relatively wide range of materials. In principle, as long as the melting point is above the sintering temperature, powder materials can be made parts by MIM technology. Considering the economy, currently commonly used materials mainly include iron base, nickel base, low alloy, hard alloy, etc. JIEHUANG CHIYANG as MIM parts manufacturer offers ferrous and nickel-based alloy metal powder materials for metal powder injection molding, with material performance indicators reaching the industry's advanced level.

 

Product category	Material	Density	Application
Patent series powder	30CrMnSiA	≥4.2	Military industry, machinery
	12Cr12M0	≥4.1
Nickel base alloy	316L	≥4.4	Medical instruments, clocks, spare parts
	H13	≥4.0	Motor vehicles, machinery
	304L	≥4.0	Machinery, parts
Nickel base alloy	In718	≥4.1	Military structural parts
	In625	4.1≥