Which step is NOT part of the conventional powder metallurgy shaping process?

The conventional powder metallurgy shaping process typically includes several well-defined steps aimed at creating solid metal components from powdered materials. The process usually begins with blending and/or mixing, where metal powders and any necessary additives are combined to ensure homogeneity and proper material properties. Next comes pressing, where the mixed powders are compacted into a desired shape using a die. This compacted shape is then subjected to sintering, a heat treatment process that causes the particles to bond together, enhancing the strength and integrity of the component.

Layering is not a standard part of the conventional powder metallurgy process, which focuses on compressing and sintering powders rather than forming layers. Layering may refer to techniques used in additive manufacturing or 3D printing, where materials are deposited in layers to build a part, but this is distinct from the traditional powder metallurgy approach. Therefore, the absence of layering makes it the step that does not belong in the conventional powder metallurgy shaping process.