Degreasing Coating Raw Parts Cleaning & Phosphating Drying
Degreasing
Pre-treatment operations are used to remove oils and light rust prior to coating.
Coating Raw Parts
The dry bulk zinc aluminium powders are combined with parts and heated at prescribed times and temperature in the retort chamber.
Cleaning & Phosphating
Parts are rinsed to remove coating dust after the heating cycle and passivated with a zinc phosphate solution.
Drying
All parts are dried and packed for shipment.
 
GREENKOTE® DIFFUSION COATINGS.
 
Code PM-1 PM-1H PM-10 PM-21
Application Corrosion resistance,
pre-coating for corrosion resistance and anti-friction duplex coatings		 Corrosion resistance,
pre-coating for corrosion resistance and anti-friction duplex coatings		 Corrosion resistance,
pre-coating for corrosion resistance and anti-friction duplex coatings		 Corrosion resistance,
pre-coating for corrosion resistance and anti-friction duplex coatings
Base Metal Carbon and low-alloy
steels, cast iron		 Carbon and low-alloy
steels, cast iron		 Carbon and low-alloy
steels, cast iron		 Carbon and low-alloy
steels, cast iron
Modify elements Zn-Al Zn-Al Zn-Al Zn-Al-Mg
Coating Process temper. °C 380...450 380...450 360...380 360...380
  Thickness, Variety, µm 15...80 15...80 5...15 5...15
Salt spray test hrs to 1000 to 1000 *) *)
Operating temper. °C to 350 to 350 to 350 to 350
HV/HK 390...420 470...510 360...390 320...340
HRC equiv. 40...43 47...50 36...40 32...34
Notes For heavy marine,
industrial, tropical and
rural environments		 For heavy marine,
industrial, tropical and
rural environments		 Excellent base for organic corrosion resistance and anti-friction topcoats Excellent base for organic corrosion resistance and anti-friction topcoats, suitable to fasterns
 
Reference: *) Together with topcoat - to 2500 hrs and more
 
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