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Metal Injection Molding (MIM) Parts
  1. MIM Processing

MIM is fast growing to bridge the manufacturing gap which other metal working technologies and shaping processes can not be fulfilled because of technology or cost. Please find MIM processing as follows:


1. Powder Mixing
A fine metal powder is blended with a binder system to produce a feedstock suitable for Injection molding.

2. Injection Molding
The feedstock is injected into molds similar to those used in conventional for plastic injection molding.

3-1. De-binding
The molded ¡°green¡± parts are immersed in a water bath to dissolve the majority of the binder.

4. Sintering
The ¡°green¡± parts are sintered in furnace at high temperature.

5. Finished parts
After sintering, the net shape components are ready without any secondary operations.


3-2. Nylon Bonded products
Such as bonded high-density and magnet products etc.

  2. MIM Advantages

High Shape Complexity: MIM process can produce more complex parts than either investment casting or traditional press and sinter techniques.
Low Cost: The cost can be saved by eliminating machining operations.
Tight Tolerances: Dimensions of MIM parts produced with our feedstock can be held to +/- 0.001~0.002" per inch.
High Density: MIM parts produced with our feedstock will have density levels between 97.5-99.5%. These levels typically exceed traditional press and sinter techniques.
High Performance: The tensile strengths, elongations and hardness are superior to traditional press and sinter techniques, and comparable to investment casting or machine components.

  3. MIM Typical Materials
Material Group Alloy/Material Description
Tungsten heavy alloy W-Ni-Fe W-Ni-Cu High density (max 18.5g/cm3, small coefficient of expansion and large modulus of elasticity. It is extensively used in military equipments, balance weights, aircraft components, nuclear and medical shields, fishing and sport tackles etc.
Tungsten-Copper Alloys Tungsten-Copper Characterized by high thermal conductivity, low thermal expansion and high wear resistance combined with excellent electrical conductivity.
Bonded high-density products W-Nylon High density (up to the density of lead 11.0 g/cc) Unlike lead, these compounds are completely nontoxic. Replace lead for weighting, balancing and radiation shielding applications.
Soft Magnetic Materials Nickel-Iron High permeability, low loss magnetic alloys.
  4. Application

The technology excels at applications that require shape complexity and high final properties, such as high strength and density, excellent magnetic permeability, high temperature strength, corrosion resistance, and thermal conductivity. These cannot be fulfilled by plastics or light metal alloys. MIM Applications include the following:

Military fragmentation projectiles

Microelectronic packaging
Automotive sensors and actuators
Hand tools and Hardware
Computer heat dissipation devices
Oil well drilling tools
Golf club heads
Electrical connectors and switches
Biomedical implants
Aerospace and engine fuel components
  5. Capability
MWe can supply you high quality MIM part at competitive price. Our production capability can reach about 100Ton/year or 15Ton/month. If your quantity can reach 20,000pcs or more per order or shipment, it will be very fit for MIM processing.
Welcome to contact us for detail information of MIM parts
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