MIM and metal 3D printing: complementary processes

MIM (metal injection molding) and metal 3D printing share a number of characteristics. For example, they both produce green parts from MIM powders that are sintered. And, according to a blog posted to the website of parts-maker Advanced Powder Products Inc. (APP) that provides a good overview of MIM and metal printing, the processes complement one another.

MIM manufacturing uses dedicated tooling to produce medium to high volumes of components, the blog explains. MIM parts generally weigh less than 100 g, have complex geometries and tight tolerances, and fit in the palm of an adult’s hand.

Metal 3D printing is an advanced additive manufacturing technology that uses powdered metals to build a three-dimensional component by applying evenly distributed layers. The layers are bound together with a high-powered laser or a device that operates like an inkjet printer. The components are then sintered using various techniques to fuse and densify the layers, creating the component’s final geometry.

APP says that combining parts-designing with its proprietary PrintAlloy metal 3D printing technology shortens the design-iteration phase by cutting the time needed to machine and ship components. Printed components can be tested and delivered in two to 10 days instead of weeks or months.

Metal 3D printing also speeds and streamlines MIM applications. “PrintAlloy gives you the flexibility to change any design without the extraneous costs of tool modifications,” says the company, adding that printing “can save you thousands of dollars in tooling costs when bringing any complex, high-volume part to full production.”