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MIM Advantages and MIM Materials Introduction
MIM Advantages and MIM Materials Introduction
MIM is the introduction of modern plastic injection molding technology into the field of powder metallurgy. MIM is a brand-new metal parts near-net molding processing technology formed by introducing modern plastic injection molding technology into the field of powder metallurgy. MIM is a new metal parts near forming processing technology by introducing modern plastic injection molding technology into the field of powder metallurgy. The process steps of MIM are as follows: firstly, selecting the best material to be molded, and secondly, selecting the best material to be molded. The process steps of MIM are as follows: Firstly, select the metal powder that meets the requirements of MIM, and then add the organic binder to the powder metallurgy powder at a certain temperature. powder and organic binder at a certain temperature under the conditions of appropriate Mixed into a homogeneous feed, and then after granulation in the heated plasticized state by injection molding machine into a uniform feed. After granulation, the material is injected into the mold cavity by injection molding machine under heating and plasticizing condition to obtain forming blank, and then degreased by chemical or solvent extraction method, and finally sintered and densified to get the final product.
MIM advantages:
Compared with traditional powder metallurgy, CNC machining and investment casting, MIM technology has the following advantages:
1, Unlimited shapes: MIM can make unlimited, complex shapes of parts by one shot process.
2, MIM can make holes, grooves, screw threads, annular knurls, words and logos.
3, Mass production: use MIM to make mass production, can save you more time and money.
4, Reliable physical properties: high intensity which can reach even 95%, good surface finish(MIM can reach Ra1.6), can do electrophoresis, nickle plating, vacuum coating etc., can do cementite, hardening, heat treatment etc., according to requirements.
5,High precision: the size precision for one shot process can reach +/- 0.1~0.5%. For some higher precision requirement, can machined by CNC.
6, Various materials: MIM parts can be made of iron, stainless steel, steel, hard alloys etc..
7, Low cost: to make complex shape and mass quantity parts, MIM can save quite a lot of cost.
8, Minimizes scrap losses by typically using more than 97% of the starting raw material.
9, Sustainable manufacturing - Green technology.
MIM materials:
1, MIM-4605
MIM-4605 is one of the most welcome material in MIM technology. It has wonderful intensity and extension. This material is widely used in Auto, handle tools, etc..
2, Stainless steel-304
Stainless steel-304 is one of the most welcome material in MIM technology. It is a Cr-Ni stainless steel, which has wonderful corrosion resistance and heat resistance. It is normally used below temperature 650C. It is an environmental material. Besides, it is easy to be machined.
3, Stainless steel-316
Stainless steel-316 is one of the most welcome material in MIM technology. It has better air and industry corrosion resistance than 304. Discontinuity-use below temperature 871C(1600F) and continuity-use above 927C(1700), it has wonderful oxidative resistance. It is widely used in switches for paper making, shells, gun parts, lock parts etc..
4, Stainless steel-316L
Stainless steel-316L contains less carbon than 316. Compared with 316, it has better mechanical properties and performance. The material cost is higher than 316 as well.
5, Stainless steel-17-4 PH (After heat treatment)
17-4 PH (precipitation hardening grade) of stainless steel has nice corrosion resistance because of the low carbon content. A range of properties and hardness is achieved by modifying the aging temperature during heat treatment. It can meet the requirement of high lever of strength and hardness.
6, Stainless steel-17-4 PH (Annealing)
17-4 PH (precipitation hardening grade) of stainless steel offers a good balance between corrosion resistance and strength. It is harndenable to various strength levels by varying the heat treatment temperature. It has nice corrosion resistance because of the low carbon content. A range of properties and hardness is achieved by modifying the aging temperature during heat treatment. It is wide used for making parts in aircraft, dental, marine, medical, and surgical industries.
7, Stainless steel-420
Stainless steel-420 is with high strength, hardness, and wear resistance with moderate corrosion resistance. It is not used as wide as Stainless steel-440.
8, Stainless steel-440
Stainless steel 440 is used to make parts which require excellent strength, hardness and corrosion resistance, such as fields of automotive, power hand tools, pumps, and sporting.
