Laser cladding technology is a new surface treatment technology, which has the advantages of fast, high efficiency, energy saving and environmental protection. It is widely used in surface repair and strengthening of various materials. Laser cladding technology is also widely used in the repair of the inner wall of the casting pump.
Process flow of laser cladding repair of inner wall of casting pump chamber
Laser cladding repair of the inner wall of the casting pump cavity mainly includes the following steps:
1. Casting pump cavity inner wall cleaning. Before laser cladding, the inner wall of the casting pump cavity should be cleaned to remove surface dirt, oil, rust and other impurities to ensure the quality of repair.
2. Preheating. In order to reduce the heat-affected zone in the laser cladding process and improve the bonding strength of the laser cladding layer, it is necessary to preheat. The preheating temperature is generally controlled at about 200℃.
3. Casting pump cavity inner wall laser cladding repair. The selected laser cladding material is evenly coated on the inner wall of the pump cavity of the casting by powder feeding machine or sol-gel method, and then the coating is melted and quickly solidified by laser beam irradiation to form a cladding layer closely combined with the substrate.
4. Casting pump inner wall laser cladding after treatment. After laser cladding is completed, it is necessary to carry out post-treatment, including grinding, polishing, heat treatment, etc., to improve the surface quality and performance of the cladding layer.
Material selection for laser cladding repair of inner wall of casting pump
The material selection is the key in the laser cladding repair of the inner wall of the casting pump. According to the use requirements and working conditions of the casting, the selection of excellent performance of cladding materials, commonly used cladding materials are nickel base alloy, cobalt base alloy, iron base alloy and so on. These materials have excellent wear resistance, corrosion resistance and high-temperature resistance, which can significantly improve the service life of the cast pump chamber.
Performance of laser cladding layer on inner wall of casting pump chamber
The cladding layer prepared by laser cladding technology has excellent mechanical and physical properties and can meet the requirements of the casting pump chamber. First of all, the cladding layer has high hardness, good wear resistance and corrosion resistance, and can effectively resist the influence of various media and friction. Secondly, the combination strength of the cladding layer and the substrate is good, and it is not easy to fall off and crack. In addition, the laser cladding technology can also achieve rapid solidification and grain refinement of the cladding layer, and further improve the mechanical properties and high-temperature resistance of the material.
Application example of laser cladding repair of inner wall of casting pump
The laser cladding technology on the inner wall of casting pump has been widely used in many fields. For example, in the petrochemical industry, laser cladding repair of the inner wall of the pump plunger pump chamber can effectively improve the wear resistance and corrosion resistance of the pump and extend its service life. In the field of ships, laser cladding repair of the inner wall of the propeller pump cavity can enhance the wear resistance and impact resistance of the propeller, and improve the operation efficiency and safety of the ship. In addition, in the fields of electric power, metallurgy, mining, etc., the laser cladding repair technology of the inner wall of the casting pump has also been widely used.
Xi'an Guosheng Laser Technology Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing and sales of automatic laser cladding machine, high-speed laser cladding machine, laser quenching machine, laser welding machine and laser 3D printing equipment. Our products are cost-effective and sold domestically and abroad. If you're interested in our products, please contact us at bob@gshenglaser.com.