The basic characteristics of flame spray technology

       The basic characteristics of flame spray technology are:



Generally, metal and non-metal substrates can be sprayed, and the shape and size of the substrate are usually not limited, but the small holes cannot be sprayed at present; the coating materials are wide, and metals, alloys, ceramics, and composite materials can be used as coating materials. It can make the surface have various properties, such as corrosion resistance, wear resistance, high temperature resistance, heat insulation, etc. The porous structure of the coating has oil storage lubrication and antifriction properties, and the macro hardness of the spray coating containing the hard phase can reach 450HB , the spray welding layer can reach 65HRC; the flame spraying has little influence on the matrix, the deformation of the matrix is small, and the material structure does not change. Disadvantages of flame spraying technology: the bonding strength between the sprayed layer and the substrate is low, and it cannot withstand alternating loads and impact loads; the surface preparation requirements of the substrate are high; the flame spraying process is affected by various conditions, and there is no effective detection method for the coating quality. Commonly used flame spraying methods include acetylene-oxygen flame powder spraying, acetylene-oxygen flame wire spraying, etc. The equipment used for acetylene-oxygen flame powder spraying is simple and can be constructed on site and is suitable for equipment maintenance.