Metal Injection Molding Process Pdf

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

Metal injection molding process pdf.

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. Feedstock veryfinemetalpowdersusually 15microns aremixedwithaprimaryparaffinmaterialanda secondary thermoplastic polymer. Metal injection moulding and industrial scale sinter based additive manufacturing facilities require a secure supply of industrial gases for use as sintering atmospheres. Smith metal products design guide pdf download.

Metal injection molding is a manufacturing method for producing parts made of metal. The flow diagram in fig. The injection molding process is mainly identica l to conventional plastic injection molding. In addition to cost considerations a strategic view needs to be taken of how these gases are supplied or generated what infrastructure is required to store them and what.

Everything you need to know about metal injection molding in one easy download. Mim is a subcategory of the powder injection molding pim man ufacturing technique. 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. The metal injection molding process is usually called by its short acronym mim as it will do in this work.

2 shows the sequence of processing steps. 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. The metal injection molding process is typically explained as four unique processing steps compounding molding de binding and. Consistency of powder size distribution consistency of powder loading mlp d consistency of powder loading metal powder metal powder 60 volume polymer.

Unlike standard powder metallurgy which can achieve only 80 90 of theoretical density mim results in 95 100. Pim utilizes the plastics production technology of injection mold. Together they act as binders.