Mechanical Plating Process:
Application:
Automotive components. Engineering. Structural applications.
Specifications:
Mechanical coatings produce corrosion resistant coatings up to 20
microns in thickness. Produces corrosion resistant coatings to
satisfy most specifications.
•
Excellent adhesion and uniformity.
• Freedom from hydrogen
embrittlement.
• Easily plates sintered metal
parts, without the need to impregnate.
• Different metal coatings can
be applied on a batch to batch basis in the same
equipment.
• Mixed metal coatings or
sandwich coatings may be applied to meet specific higher corrosion
resistant applications.
• Thicker coatings can be
applied without significant cost increases
Mechanical Galvanizing:
Application:
Construction and building industry products. External applications.
Coastal environments.
Specifications:
Mechanical galvanising produces corrosion resistant coatings up to
20-110 micron range.
Coatings can be either a:
Single metal: Zinc, Tin,
Copper
Alloyed: Zinc/Tin, Zinc/Aluminium
Layered: Zinc base then Tin
The zinc / aluminium alloy coating is especially suited to for
components in contact with magnesium.
Mechanical Galvanizing
Mechanical galvanizing covers the range 20-110 microns.
(Mechanical Plating is up to 20 microns)
Advantages of Mechanical Galvanizing
• Improved coating uniformity compared with other
traditional thick zinc coating processes.
• Excellent part to part coating thickness consistency.
• Low energy, room temperature process.
• Freedom from hydrogen embrittlement.
• No stickers.
• Small components are easily processed.
• Coating thickness can be accurately controlled at any value
within the range 20 - 110 microns.
• No softening of hardened components.
Mechanically deposited coatings of zinc within this range are
known as Mechanical Galvanizing. The principle of the process is
exactly the same as for Mechanical plating except
that:
1. Modified chemicals are used.
2. Multiple additions of zinc powder are added during the
cycle.
Mechanical Coatings can be sealed with a variety of
finishes.
• Chromates both trivalent & hexavalent can be applied
with significant increases in corrosion protection.
• Sealants can be applied which will enhance the chromate
protection properties even further..
Specifications and Standards - Table 2
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