Application of Arc spraying technology

Anti-corrosion coatings

Selection environment of Arc Spraying Anti-corrosive Coating Materials.

For the atmospheric corrosion environment, the general principle is that pH = 7-12 alkaline environment with spray Pure Zn and Zn alloy coating; for pH = 4-7 acidic environment with spray Al and Al alloy; pH = 6 -8 neutral environment with spraying Zn Al alloy coating is more appropriate.

For the ocean atmosphere, industrial city atmosphere and acid rain in the bridge and other large steel structure spraying Al and Al alloy coating + weathering finish is more appropriate.

For air quality dry environment of the steel structure, such as television towers, transmission towers, arc spraying Zn and Zn-Al 95/5 alloy coating.

For inland rivers, fresh water immersion in the steel structure, such as: river hydraulic gates, volute, draft tube, water tanks, etc., with arc spraying ZnAl85 / 15 coating + closed coating better.

For Seawater immersion in the environment of steel structures, such as: tide gates, steel columns, etc., with arc spraying Al and Al alloy (Such as AlMg5), ZnAl85 / 15 coating + anti-erosive sealing material + anti-erosion surface layer coating is better.

For acid, alkali, salt and other chemical corrosion environment of steel structure, according to the corrosive medium, select the appropriate acid, alkali, salt Pb, stainless steel (316 & 316L), CuNi10,CuNi30, Monel400 Pure Al and Al alloy etc.The formation of Fe-Al compound infiltration Al layer, in the high-temperature environment, the formation of dense alumina film, the substrate has a good protective effect.

Such coatings in metallurgy, petrochemicals. Thermoelectricity and other industrial fields have been widely used.

Wear-resistant Coating

For the normal temperature sliding friction and wear at workpiece, such as a variety of shafts, sliders, rails and other wear or ultra-poor surface, available carbon steel, high carbon steel, bearing steel or flux cored wire arc spraying to repair. In the lubrication of working conditions, the spray layer is conducive to the storage of porous media lubrication, to improve wear resistance at the same time also improve the lubrication effect. For both wear and corrosion of parts, such as plungers, paper dryer, cylinders, valves, etc., depending on their wear and corrosion with high chromium steel wire goods FeCrBSi cored wire.

For high temperature sliding wear resistance of the work piece, available FeCrAl, NiAl95/5, NiCrAl(P), FeCrBSi, etc alloy wire or cored wire coating.

For friction-reducing sliding support surface, such as sliding bearings, bearing pads, sliders, can be CuSn6P,CuSn9P, CuAl8,CuAl10 and other coatings. Similarly, in the presence of lubricated working conditions, the pores of the sprayed layer help to lubricate the media and improve the lubricating effect.