Two best methods to remove oxide in sheet metal processing
The brief overview of sheet metal processing in
different kinds of metal materials processing, process of sheet metal processing
for metallic materials, in fact is an certain needs. Of course, this is not just
need metal sheet integrity, and a metal appearance also needs to have a set of
requirements, such as metal is excessive oxidation, sheet metal processing is
requirements of metal can not be oxidized. Also, the thickness of the metal
takes more than disposal of goods after thickness; but in actual operation,
there is almost no no oxidation of the metal, the on the need for oxidation of
the metal how to dispose of it?
Stainless steel processing operations are
usually by bending, side bar, welding or by artificial appearance grilled
heating disposal, resulting in the black oxide skin. The black oxide skin is
relatively strong, containing nicr2o4 and NIF two EO4 components. In the past
basic on is by use of hydrofluoric acid and nitric acid are strong corrosion way
to get rid of. But this method because of the pollution of the environment,
harmful to human body, corrosion is relatively large and the cost is gradually
abandoned sheet metal processing industry. The sheet metal processing factory
for oxide solution movi have two:
1. By the chemical method: the use of a
pollution-free pickling passivation cream and normal temperature without
poisoning with inorganic additives for cleaning liquid immersion. To reach the
nature of stainless steel whitening treatment intent. Treated by the method of
metal equipment appears to be a light color. This method of large-scale, mixed
and disorderly goods is applicable.
2 sand blasting method / shot blasting
method: in general is the use of micro glass bead method, remove the appearance
of black oxide.
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