① combination spray layer and the base metal coating layer is formed of different nickel clad aluminum exothermic chemical reaction occurs when heated by the flame spraying bundle up in by sand-blasting Sa3 level, RZ> 50μm formed on the surface of carbon steel micro metallurgy Working in conjunction with the underlying layer and produce “anchors” effect of mechanical bond coating, and combined with spray layer and the substrate is purely metallurgical bonding coating.

② different coating materials, spray requires the use of self-fluxing alloy powder, and the coating is less demanding self-fluxing powders, and are not necessarily self-fluxing alloy powder, a variety of self-fluxing alloy powder used for both spray can be used for spraying, but spraying powder does not have the self-fluxing can not be used for spraying and spray process.

③ work-piece heating situation is different, and spray coating process, spray different preheat temperatures, different heat-affected parts, the organization of the work-piece, the performance is also different after spraying.

④ different dense coating, spray dense layer, but a small amount of porosity sprayed layer.

⑤ different load-bearing capacity, spray coatings are generally able to withstand large-area contact, more lubrication conditions at the work surface, with the face as well as other smaller force operating conditions using spray layer able to withstand greater impact force, compressive stress or exposure to stress.

For more information please link:www.metalcarbidepowders.com, please contact:info@langfengmetallic.com