What is Metal Injection Molding
Metal Injection Molding (MIM), sometimes referred to as Powder Injection Molding, combines the technical aspects and competitive advantages of plastic injection molding with powdered metallurgy.
Metal Injection Molding combines the strength and durability of metal with the flexibility inherent in the injection molding process. Metal Injection Molding is a highly cost effective method for producing a wide variety of components and is an excellent alternative to other forms of metal working such as die-casting, investment casting and many forms of machining. Typically, ideal parts for MIM are small in size and range in weight from .1 grams to 450 grams. Complex geometries, tight tolerances, high density and exceptional repeatability are some of the characteristics that make Metal Injection Molding the go-to process for metal parts production in a variety of industries.
Compoundingis the process of mixing metal powder and binders. Advanced Forming Technology has the capability of creating our MIM feedstocks in house, which allows us to produce high quality materials quickly and in a controlled environment. Our expertise in compounding materials for Metal Injection Molding allows us to maintain absolute consistency to eliminate defects in the molding process. We are able to create custom blends for specific applications. Metals commonly used for MIM parts include:
- Low alloy steels
- Stainless steels
- High-speed steels
- Cobalt alloys
- Copper alloys
- Nickel alloys
- Tungsten alloys
- Titanium alloys
The injection molding aspect of MIM takes place at relatively low temperatures and pressures in conventional injection-molding machines. AFT has a wide variety of molding machines including electric, hydraulic and hybrid machines that range from 17 – 106 tons of clamping force and produce injection capacities up to 185 g PS.