Metal Injection Molding

Metal Injection Molding (MIM) is a cost and quality alternative to plastic injection molding, casting or stamping for a wide variety of applications.

Metal Injection Molding is just what it sounds like, using a standard plastic injection machine to make parts out of powdered metal mixed with a binder (feedstock). The parts are molded just as with plastics but then are processed through a de-binding and sintering process. The parts at this stage are called “green or brown stage parts”, and are fragile and easily broken.

De-binding:

The process of de-binding the parts starts the process of removing the binder, often wax and oil based, from the part itself. There are several different de-binding methods. Among them is water, solvent and super critical fluid extraction (SFE).

Sintering:

The sintering or baking process is achieved in one of several ways. This may be in a batch furnace, tube furnace or continuous (belt) furnace. The sintering process removes the remainder of the binder and “shrinks” the part down to its desired size.

When done correctly, you have a finished part that is superior in strength, finish and dimensional accuracy to a cast or stamped part. Metal Injection Molding can be done with a wide variety of metals. Among them:

  • 410, 420, 430, 17-4PH, 316L Stainless Steel
  • Titanium, Copper, 4340, 8620, D-2, F-75
  • Tungsten Cobalt, Tungsten Nickel, Tungsten Copper

And many more.

SINCERE TECH. has over 18 years of experience running metal injection molding for a wide range of industries. Call, E-mail or fax us today with your metal injection molding project ideas. We are ready to help