Laser Cladding：
Laser cladding technology refers to the process method of placing the selected coating material on the surface of the coated matrix in different filler ways, melting it at the same time with a thin layer on the surface of the substrate by laser irradiation, and quickly solidifying to form a surface coating with a very low dilution and metallurgical combination with the matrix material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical characteristics of the surface of the matrix material.
It has successfully carried out laser cladding of self-fusing alloy powders and ceramic phases such as cobalt-based, nickel-based and iron-based on the surface of stainless steel, mold steel, malleable cast iron, gray cast iron, copper alloy, titanium alloy, aluminum alloy and special alloy.
Laser Cladding：
Laser cladding technology refers to the process method of placing the selected coating material on the surface of the coated matrix in different filler ways, melting it at the same time with a thin layer on the surface of the substrate by laser irradiation, and quickly solidifying to form a surface coating with a very low dilution and metallurgical combination with the matrix material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical characteristics of the surface of the matrix material.
Laser cladding of cobalt-based, nickel-based, iron-based and other self-fusing alloy powders and ceramic phases on the surfaces of stainless steel, die steel, malleable cast iron, grey cast iron, copper alloys, titanium alloys, aluminium alloys and special alloys has been successfully carried out.
Laser-clad iron-based alloy powder is suitable for parts that require local wear resistance and are prone to deformation. Nickel-based alloy powders are suitable for components that require local wear resistance, thermal corrosion resistance and thermal fatigue resistance. Cobalt-based alloy powders are suitable for parts that require wear resistance, corrosion resistance and thermal fatigue resistance. Under the conditions of sliding wear, impact wear and abrasive wear, pure nickel-based, cobalt-based and iron-based alloy powders can no longer meet the requirements of the working conditions, so in our use of powder metallurgy, hot isostatic pressing technology for laser cladding, can meet the working conditions that the pure matrix cannot meet.
Laser cladding is used in two main applications, namely corrosion resistance (including high temperature corrosion resistance) and wear resistance, in a wide range of applications such as sealing surfaces of valves and valve seats in internal combustion engines, laser cladding of water, gas or steam separators, etc. Also to improve the wear and corrosion resistance of materials, Co-based alloys (e.g. Co-Cr-Mo-Si system) can be used for laser cladding. The presence of the Co3Mo2SI hard intermetallic phase in the range of physical composition in the matrix ensures wear resistance, while the Cr provides corrosion resistance.
