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Zinc Phosphating
As a pre-treatment for paints, zinc phosphate coatings provide a more absorptive film enabling a longer service life in a corrosive environment to be achieved.
Surfix Zn 601 produces a smooth mycrocrystalline zinc phosphate coating on iron and mild steel components by simple immersion. These coatings ensure a strong bond between paint film and the metal substrate. The coating also acts as a corrosion barrier below the paint film and also prevents spread of corrosion in case scratches and cuts are developed on the painted surface. Coating weight is between 200-400 mg / sq. ft. and obtained within 2-5 minutes. Phosphate coatings produced by Surfix Zn 601 have following advantages :
- Paint sinkage and gloss reduction is minimum and hence requires less paint for coverage, resulting in lower paint cost.
- High coverage reduces chemical cost.
- Low sludge formation leads to a longer bath life and minimum down-time.
- The shorter process cycle results in increased production.
- High corrosion resistance.
- Lower temperature operation substantially reduces the fuel cost.
Surfix Zn 602 produces heavy zinc phosphate coating on iron and mild steel components by simple immersion. This phosphate coating prevents excessive wear and tear of moving parts of machinery. Coating weight of 750-2000 mg / sq.ft. is produced within 5-10 minutes.
Manganese Phosphating
This is mainly used for engineering components that require break-in or wear-in
Surfix Mn 641 produces a non-metallic, oil absorptive, crystalline, black/dark grey manganese-iron phosphate coating on steel and iron surfaces to reduce wear and prevent galling of moving parts such as bearing surfaces, pistons, piston rings, shafts, gears, cylinders, etc. Coating weight obtained is 750-3000 mg/sq. ft.
Surfix Mn 641 Manganese iron phosphate coatings
1. Act as a solid lubricant until the two wearing surfaces can form matched mating surfaces.
2. Act as a porous base for liquid lubricants.
3. Provide corrosion resistance of high order in conjunction with oils
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