With the continuous development of industrial manufacturing technology, many mechanical equipment are gradually developing in the direction of high precision, high strength, high reliability and long life. However, due to the harsh operating environment, complex working conditions and other factors, mechanical equipment in the long-term use of the process will inevitably cause a variety of damage and failure, such as wear, corrosion, and fracture of shaft parts. These failures will not only affect the normal operation of mechanical equipment, but also bring great security risks to production. Therefore, the repair and remanufacturing of mechanical equipment damage and failure has become one of the important research directions in the field of industrial manufacturing.
Among many repair techniques, broadband laser cladding is a new repair technique. The technology uses a high-energy broadband laser beam as a heat source to clad materials such as alloy powder or ceramic powder on the surface of the damaged part to form a repair layer with excellent performance, restore the size of the part and improve the performance of the part. Compared with traditional repair technology, the broadband laser cladding repair technology has the advantages of high bonding strength between the repair layer and the base material, high density of the repair layer and excellent wear resistance, so it has been widely used.
It has become a trend to use broadband laser cladding repair technology to repair the damage and failure of shaft parts. The following Guosheng Laser introduces the process flow, material selection, performance characteristics and application examples of broadband laser cladding repairing shaft.
Process flow of broadband laser cladding repairing of shaft
The process flow of broadband laser cladding to repair the shaft mainly includes the following steps:
1. Surface treatment: the shaft surface grinding, cleaning, drying and other treatment. Remove surface oxides, oil and impurities.
2. Coating preparation: alloy powder or ceramic powder is mixed with other materials in a certain proportion to prepare cladding powder. The cladding powder is evenly coated on the surface of the shaft to form a coating of a certain thickness.
3. Laser cladding repair: the use of high-energy broadband laser beam scanning coating, so that the coating surface quickly melted and formed a liquid pool. Under the action of laser, materials such as alloy powder or ceramic powder in the molten pool are fully melted and mixed to form a dense cladding layer.
4. Post-repair treatment: cooling, polishing and cleaning of the cladding shaft to remove excess coating materials and burrs.
5. Performance test: the repaired shaft performance test, including hardness, wear resistance, corrosion resistance and other tests.
material selection for shaft repairing
The choice of material is one of the key factors in the process of shaft repair by wideband laser cladding. According to the material and performance requirements of the shaft, different materials such as alloy powder or ceramic powder can be selected as cladding materials. Common cladding materials are nickel base alloy, cobalt base alloy, iron base alloy, ceramic particle reinforced alloy, etc. These materials have excellent wear resistance, corrosion resistance and high-temperature properties, which can significantly improve the performance and life of the cladding layer.
Performance characteristics of the repired shaft after wideband laser caldding
Performance characteristics of the repaired shaft after wideband laser cladding:
1. High bonding strength: broadband laser cladding repair technology can be alloy powder or ceramic powder together. The material is closely combined with the base material of the shaft to form a dense bonding layer, which significantly improves the wear resistance and fatigue resistance of the shaft.
2. Excellent wear resistance: by choosing alloy powder or ceramic powder and other materials with excellent wear resistance as cladding material, the wear resistance of the shaft can be significantly improved, thus extending the service life of the shaft.
3. Enhance corrosion resistance: The use of broadband laser cladding repair technology can form a repair layer with excellent corrosion resistance on the outer surface of the shaft, so as to effectively prevent the erosion of the corrosive medium on the shaft.
4. The heat-affected zone is small: broadband laser cladding repair technology uses high energy broadband laser beam as a heat source, the heat-affected zone is small, so as to ensure that other parts of the shaft are not damaged. 5, high repair efficiency: broadband laser cladding repair technology can be used to repair shaft parts, thus significantly improving repair efficiency and reducing repair costs.
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 hardening 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.