Using aluminum-coated nickel composite powder as the primer material for oxygen-acetylene flame powder spraying

       In oxygen-acetylene flame powder spraying, nickel-aluminum composite powder is generally used as the primer layer. Nickel-aluminum composite powder can be divided into nickel-clad aluminum and aluminum-clad nickel.



     Due to the violent exothermic reaction of the nickel-clad aluminum composite powder and the high exothermic temperature, a large amount of smoke is easily generated during spraying. In order to prevent the workpiece from being polluted by smoke. The operation method can be used the rapid thin-layer spraying method, that is, the spray gun is moved back and forth repeatedly, and the powder particle size should not be left in one place for too long.

     The aluminum-coated nickel composite powder has better working performance, higher bonding strength and less smoke, so try to use aluminum-coated nickel powder.

     KF-6 composite powder (aluminum-coated nickel composite powder) developed by Beijing General Research Institute of Mining and Metallurgy can be used as a primer powder. Compared with nickel-coated aluminum composite powder, it has higher bonding strength, good coating toughness, and can be sprayed When the smoke is less, the powder deposition efficiency is high.