Question

pbf: post-processing
use the information below to answer the question.
heat treating
one post - processing step for powder bed fusion (pbf) prints is to use heat treating.
heating the metal of the print and then quickly cooling it down removes any internal
stresses within the metal. this reduces the chance of it affecting the performance of
the piece.
support material
another step of post - processing for powder bed fusion (pbf) prints involves the
support material. the support material has to be removed by the operator using a
grinder once the print is complete. after the support material is removed, traditional
machine tooling techniques can be used such as welding, grinding, or polishing.
a subtractive manufacturing process can be done as well, whereby a cnc machine
removes material. sandblasting, electroplating, or micro - polishing can be done during
post - processing as well.
what post - processing technique for powder bed fusion
(pbf) prints involves heating the metal and then cooling it
down quickly?
heat treating
electroplating
micro - polishing
thermal coating

Explanation:

The text clearly states that heating the metal of the PBF print and then quickly cooling it down is part of the heat - treating post - processing step. It directly answers the question about the post - processing technique involving heating and quick cooling.

Answer:

heat treating