Question

pbf: post - processing. use the information below to answer the question. what post - processing technique for powder bed fusion (pbf) prints involves heating the metal and then cooling it down quickly? electroplating, heat treating, micro - polishing, thermal coating

Explanation:

The description in the question mentions heating the metal and then quickly cooling it down as a post - processing technique for Powder Bed Fusion (PBF) prints, which is the definition of heat treating. Electroplating involves coating with a metal layer using an electric current, micro - polishing is for surface finishing, and thermal coating is about applying a protective layer by heat.

Answer:

heat treating