About 15 years ago, the options for fabricating some metal parts were limited. In truth, there was essentially just one choice : traditional machining. It may not have been a particularly cost-effective method, with the complexity of the part’s geometry requiring long machining times, still considering that machining was the only option, there was no reason to address the downsides but thanks to the modern manufacturing techniques, trends have changed.
Metal Injection Molding – MIM
A manufacturing capability for producing complex shapes in medium or large quantities. The process utilizes fine granulated metal with a binder (feedstock) which is fed into cavities of a die on a conventional plastic injection molding machine. The part achieved from this process is known as “Green Part”. Later, most of the binder is extracted from this green part by thermal or solvent processing and the rest is removed as the component is sintered (solid state diffused) in a controlled-atmosphere furnace. The MIM process is very similar to plastic injection molding and high-pressure die casting, and it can produce much the same shapes and configuration features.
For the past one year, Metabuild has pushed the capabilities and boundaries of MIM technology to produce highly detailed complex metal components more efficiently and economically than could be accomplished using traditional manufacturing methods.
The metal injection molding process is also recognized as a Green Technology due to the significant reduction in wastage compared to ‘traditional’ manufacturing methods such as 5 axis CNC machining for example.
Complex parts can be produced more quickly and at a lower cost and a great design freedom is provided with this technology. All the casting defects such as slag, ceramic chips in part, pores, blow holes, gas pockets etc are eliminated. An assembly of parts can be converted into one single component with the help of MIM.