- present participle of buff
Metal polishing, also termed buffing, is the
process of smoothing metal
s and alloy
s and polishing to a bright,
smooth mirror-like finish. Metal polishing is often used to enhance
s, etc. Many medical
instruments are also polished to prevent contamination in marks in
It is a metal-finishing operation where articles
are polished using abrasives or mops.
Existing shiny metal objects can be cleaned,
often with the help of a cleaning product called a metal polish;
this is also called polishing.
Buffing is commonly used in metal polishing of
kitchenware. Pipes which are used in pharmaceutical, dairy and
water industries are buffed to maintain hygenic conditions and
prevent corrosion. Buffing is also used in the manufacture of
high-quality lighting reflectors.
ProcessGenerally buffing is a multistage process. First,
abrasives -- which may be coated, non woven or woven -- are applied
at high speed to remove surface defects like pits, nicks, lines and
scratches from the articles to be buffed. Then mops of various
materials are used to smooth the surface to be buffed. Lastly,
cotton mops are used to give a mirror-like finish to the articles.
As a general rule, coarse grit abrasives are used first and fine
grit abrasives later. This gives a smooth finish by forming very
thin lines that are not visible to the naked eye. Lubricants like
wax, diesel fuel and kerosene are used as lubricating and cooling
media during these operations. Sophisticated computer-controlled
machines are available which do buffing of intricately shaped
articles. Before the advent of such machines, buffing was done by