Metal Injection Molding (MIM)

MIM metal powder injection molding is a process specifically used to produce metal parts with special and complex shapes. In terms of dimensional accuracy, MIM far surpasses investment casting, die casting, and cold forging. In terms of mechanical properties and corrosion resistance, MIM also exceeds traditional powder metallurgy.

With over 30 years of experience in MIM technology, Taiwan Porite's MIM products have been recognized and praised by customers in various fields, including automotive (engine and transmission systems), aerospace, nail guns, tools, power tools, 3C industries (computers, communications, consumer electronics), medical, bicycles, and general mechanical parts.

Process

01

Injection Molding

Injection Molding

Mix metal powder with a binder and use a granulator to produce metal materials specifically for injection molding. Then, use an injection molding machine to inject the material into the mold.

02

Dewaxing

Dewaxing

Dissolve the wax on the parts using a solvent.

03

Sintering

Sintering

Place the parts into a vacuum sintering furnace for sintering. The temperature causes the parts to shrink, increasing their density and mechanical properties, resulting in the finished product.

Material Specifications

The mechanical properties of MIM alloy materials conform to the standards of the American MPIF Standard 35.

Alloy Steel Fe-2Ni, Fe-2Ni-0.25Mo (4605), Fe-8Ni
Stainless Steel 316L, 410L, 410, 420J2, 430L, 17-4PH
High-Speed Steel M2 (SKH51)
Magnetic Materials Fe-49Co-2V (Permendure), 78Ni-18Fe-4Mo, Fe-3Si
Low Expansion Alloy Fe-29Ni-17Co (Kovar), Alloy42 (Fe-42Ni)

Advantages

  • Production of Complex-Shaped Parts
    Capable of manufacturing parts with complex shapes and intricate details, which are difficult to mass-produce using traditional powder metallurgy and too costly to form by machining.
  • High Strength
    The final product has excellent mechanical properties.
  • High Density
    Average density reaches over 7.6 g/cm³, making the products easy to electroplate and other surface treatments.
  • Low Surface Roughness
    The process ensures low surface roughness of the finished product, making it very suitable for producing aesthetic parts.

Applications

Vehicles

Power Tool

Home Appliances

Office Appliances

Industrial Machinery

Medical Devices

Aerospace

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