POLISHING
POLISHING
Polishing is the important phase of mould construction because the final finish given to the moulding determines
the finished obtained on the piece part of the casting.
ADVANTAGES OF POLISHING
1) Easier
ejection of the component .
2) Reduce risk
of corrosion
3) Reduce risk
of fracture and cracking of component during ejection.
4) Imparts
high surface finish to the moulding.
5) Easy flow
of plasticised material in the cavity.
Surface
smoothness that can be achieved depends on some factors such as:
1) Polishing technique.
2) Tool steel grade.
3) Heat treatment
First the rough
machining marks are removed using oilstone or emery cloth, the part is then polished
with rough emery paper. Then going from coarse grit to intermediate and then to
fine grit results in good polishing. Mirror finish is obtained by finest grade
of emery paper or diamond paste.
A Surface Finish Test is a quality inspection process used to measure the texture, smoothness, and roughness of a material’s surface. It plays a crucial role in manufacturing by ensuring
ReplyDeletethat machined parts meet the required specifications for performance, durability, and appearance. Industries such as automotive, aerospace, medical, engineering, and heavy fabrication
rely on surface finish testing to maintain high-quality production standards.