Metal spraying nickel plating on electric heating tubes

Metal spraying nickel plating on electric heating tubes

Metal spraying nickel plating is the process of using compressed air or inert gas to melt corrosion-resistant metal onto the metal surface to form a protective coating. When metal spraying nickel plating, the surface material is melted and atomized in a specialized nozzle or gun, and onto the substrate material. This finishing method is sometimes referred to as metal spraying. Generally, oxygen acetylene flames are used, but sometimes other gases are also used.

When the plated metal wire is automatically fed through the flame core, the metal wire melts and is simultaneously atomized by compressed air flow onto the substrate material. Almost any metal that can be made into wire can be sprayed using this method. Another type of spray gun uses powdered materials to come out through flames. The advantage of this method is that it can not only spray metal, but also spray metal ceramic composite materials, oxides, and hard alloys.

Surface preparation before spraying

Because the bonding between the coating material obtained by metal spraying nickel plating and the substrate material is purely mechanical, appropriate pre-treatment is required for the substrate material. In order to achieve good mechanical bonding. Regardless of the surface preparation method used, the substrate surface must be clean and free of oil stains.

The commonly used surface preparation method is sandblasting. To achieve this, the sand particles are sharp enough to produce a rough surface. For cylindrical surfaces that can rotate on a lathe, an effective method is to turn out very thick threads and then gently roll the tooth crown with a rolling knife. One improvement method that can be used for flat surfaces is to use a circular groove cutter to cut a series of parallel grooves, and then use a knurling cutter to seize the edges between each groove. If the coated surface needs to be machined, the substrate surface should be prepared by rough machining or grooving to obtain good preparation.

Application of Metal Spray Nickel Plating

Metal spraying nickel plating has many important applications in product design. If zinc and aluminum are sprayed onto the surface of steel, a protective coating can be obtained to achieve corrosion resistance. Because metal spraying nickel plating can spray metal onto almost any metal or non-metal surface, it provides a simple method of coating a conductive surface on the surface of poor conductors or non conductors. Therefore, copper or silver is often sprayed onto glass or plastic. Due to the fact that sprayed metal can be treated in various