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Plating - Special Finishes
Bake, Blast, Brush, Paint, Passivate, Pickle, Seal.
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Bake for Hydrogen Embrittlement
QQ-N-290; QQ-P-416; QQ-Z-325
Features:
- After plating, all steel parts having a
hardness of Rockwell C46 and higher must be baked at 375
plus or minus 25 degrees Fahrenheit to relieve the
embrittlement which occurs naturally in the electrolysis
process.
- Special baking cycles and durations are
common.
- Pre-plating baking to stress relieve due
to machining, forming or heat treatment are available.
Blast with Aluminum Oxide, Glass or Steel Grit
Features:
- Provides excellent removal of dirt, scale
and corrosion products from surfaces which must be clean
for use in the bare condition or will be subsequently
plated, anodized, polished or painted.
- Processing can be in a bulk tumble method
or a manual piece by piece method.
- Parts should be oiled or plated as soon
as possible after blasting to prevent oxide formation on
the clean surfaces.
- Pangborn Blast available.
Brush Plate
Features:
- Certain areas on hi-tech parts require
plating in localized areas without plating the balance of
the part which would occur if conventional methods were
used including immersing and therefore plating of the
entire part.
- Brush plating is done with an electrified
brush and deposits plating in very specific, usually small
areas which require plating for special reasons.
Dow 1/Chromate on Magnesium
Features:
- This process provides a chemical
conversion chromate film on magnesium products.
Iridite Yellow Chromate
Paint - Dip Spin
Features:
- Dip spin paint process involves bulk
basket dip painting and centrifuge spinning to throw off
excess paint all included in a single patented paint
machine.
Passivate
QQ-P-35; AMS 2550; ASTM-A-380; ASTM-A-967.
Features:
- Removes surface contaminants.
- Promotes the natural corrosion resistance
of stainless steels by creating a thin transparent oxide
film.
Pickle
Features:
- Pickling of metal is a process which
softens and/or completely removes contaminating surface
oxides or other inorganic materials in order to expose a
basis material surface for use "as is" or ready
for further surface finishing.
- It must be done with care to prevent
attack of the product surfaces.
Seal
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