flame spray gun
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100 Piece (MOQ)
Zinc Spray Gun
60,000 - 120,000 Per Piece
2 Piece(s) (MOQ)
zinc thermal spraying is a process where zinc or zinc alloys are melted and then sprayed onto a prepared substrate, creating a layered coating. Thermal spraying is a highly effective and proven method of corrosion prevention, giving galvanic as well as barrier coating protection to iron and steel. surface prepartion as with any coating process, proper surface preparation is essential. Grit blasting prior to coating application produces a properly clean and roughened surface, upon which the molten sprayed zinc anchors with bond strengths in the range of several thousand pounds per square inch. zinc metal coatings the main sprayed metal coatings are either pure zinc or an alloy of zinc and 15% aluminum. Sprayed coatings of pure zinc have been available since the 1920’s and are typically applied with a thickness of 100 microns or more. If not further coated, the pure zinc coating will form a stable, passive film of zinc corrosion products with a predictable weathering rate. In many environments, the sprayed zinc alone can provide sufficient service life. The zinc 15%-aluminum thermal spray coating was introduced in the late 1970’s and is about the highest aluminum composition in zinc that can be industrially made into wire. Because the micro-structure of each of the droplets of this sprayed coating consists of both a zinc-rich and aluminum- rich phase, zn-15%al offers the optimum corrosion protection to steel in aggressive atmospheric conditions such as marine environments.
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