Objective: To get rid of the
workpiece surface oil, dirt, rust and in the workpiece surface
generating a layer of corrosion resistance and can increase the
spraying coating adhesion "phosphating layer".
Main technological steps: In
addition to oil, rust removal, phosphating and passivation. The
workpiece surface after treatment before not only no oil, rust,
dust and the original silver luster surface generating a layer of
uniform and the rough is not easy to rust grey phosphating film and
can increase the coating layer adhesion.
2. Electrostatic
spraying Objective: Powder coating evenly
spray to the surface of the workpiece. The special work (including
easy to produce electrostatic shielding position) should be using
the high performance electrostatic spray molding machine to
complete the painting.
Process steps: Using electrostatic adsorption
principle in the surface of the workpiece evenly spray on a layer
of powder coating. Falling powder through the recovery system
recovery and sieve used again.
3. High temperature
curing
Objective: The workpiece surface
of powder coating heating to the specified temperature and heat
preservation corresponding time, melting, flow flat,
curing.
Process steps: Spraying good
workpiece push curing oven, heating to the predetermined
temperature (usually **5 degrees) and heat preservation
corresponding time (*5 minutes). Blow on take out cooling namely
get finished.
4. Decoration
processing
Objective: Make after
electrostatic spraying after the workpiece to achieve a kind of
special appearance (all kinds of wood grain, decorative pattern,
such as honor).
Process steps: Finish, transfer
and treatment process.
