Metal Injection Molding Process Pdf

Control of the molding process is vital for maintaining tight tolerances in subsequent steps.

Metal injection molding process pdf.

Metal injection molding is a manufacturing method for producing parts made of metal. Nevertheless some machine hardware changes are usually required to process a specific feedstock based on their compressibility and viscosity. Metal injection molding mim is a process for forming net shape or near net shape components at a reduced manufacturing cost as compared to machining and at a higher precision level than other forming technologies such as investment casting. Feedstock veryfinemetalpowdersusually 15microns aremixedwithaprimaryparaffinmaterialanda secondary thermoplastic polymer.

The injection molding process is mainly identica l to conventional plastic injection molding. The metal injection molding process combines the design flexibility of plastic injection molding with the strength and integrity of wrought metals to offer cost effective solutions for highly complex part geometries. Smith metal products design guide pdf download. In the 1970s this process was developed to allow the processing of metal powders by raymond wiech in the us widely considered the inventor of the metal injection molding process.

Mim is a subcategory of the powder injection molding pim man ufacturing technique. Heaney in handbook of metal injection molding 2012. 2 shows the sequence of processing steps. The flow diagram in fig.

Pim utilizes the plastics production technology of injection mold. Metal injection moulding and industrial scale sinter based additive manufacturing facilities require a secure supply of industrial gases for use as sintering atmospheres. Consistency of powder size distribution consistency of powder loading mlp d consistency of powder loading metal powder metal powder 60 volume polymer. Metal injection molding design examples mim design eliminated a 7 piece.

The metal injection molding process is typically explained as four unique processing steps compounding molding de binding and. The metal injection molding process is usually called by its short acronym mim as it will do in this work. Together they act as binders.