Metal Injection Molding MIM

Polyacetals have a low ceiling temperature, and are readily depolymerized by unzipping at low temperature (0.4-0.8% min at 222°C for POM). Owing to this low thermal stability, polyacetals can be used only if end-capped with stable groups (acetate or ether). This inherent thermal instability is exploited in an industrial method known as metal injection molding , which allows fine metal powder mixed with a polymer binder to be processed by injection molding, in much the same way as thermoplastic materials [31]. In a procedure based on POM, the binder is removed by thermal devolatilization according to Eq. (62) 

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Additional studies are underway in the areas of metal injection molding (MIM) and metal extrusion. 

Application of Polymer Technology to Metal Injection Molding (MIM) Processing... 

Metal injection molding (MIM) is a form of powder metallurgy process that is ideally suited for the production of small complex parts. Its main advantage lies in its ability to produce finished parts to net-shape, requiring little or no expensive secondary operations. Hence, it is extremely attractive for hard metals and high precision or high performance parts. 

The application of polymers to binder formulation for metal injection molding (MIM) has been discussed. The different classifications of binder formulations were listed and described. Rheological, thermal and mechanical properties of the feedstock was described with respect to the effects from powder loading, temperature, binder composition and binder-powder interaction. Morphology inspection by SEM was also discussed. It could reveal the state of adhesion between the powders and binders and is an important technique in the study. 

Metal injection molding (MIM) for gold jewelry production. J. T. Strauss, Gold Technology, No. 20, November 1996,17-29. 

K. Wiesner, 2003. Metal injection molding (MIM) technology with 18 ct gold - a feasibility study. In Proceedings of the Santa Fe Symposium on Jewelry Manufacturing Technology, ed. E. Bell, 443-462. Albuquerque, NM Met-Chem Research. 

MIM Metal Injection Molding Gears, housing, medical components... 

For more complex pieces MIM (Metal Injection Molding), in which the metal powders are combined in a (wax) binder and injected into a mold cavity to form the desired shape, which is then sintered to high... 

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