The principle of laser cladding: the use of laser beams to make some special properties of the material cladding on the surface of the substrate material and the substrate material fusion, the formation of the substrate and the composition and properties of the alloy cladding layer is completely different from that of the alloy. For example, laser repair is the use of high energy...
Technical Background
The principle of laser cladding: the use of laser beams to make some special properties of the material cladding on the surface of the substrate material and the substrate fusion, the formation of the substrate and the composition and properties of completely different alloy cladding layer. For example, laser repair is the use of high energy density laser beam, due to wear and failure of the surface of the workpiece fused with a layer of alloy, so that the workpiece to restore the original appearance, with the use of performance to meet or exceed the original. The cladding process is the metallurgical process of the cladding material, the substrate surface microfusion makes the cladding material and the substrate to achieve metallurgical bonding.
Laser cladding can achieve the purpose of surface modification, repair or remanufacturing, can repair material surface defects, such as holes, cracks, etc., to restore the geometry and surface properties of worn parts, to meet the specific performance requirements, not only to recover the loss of scrap, but also to save a lot of materials and precious metals.
Laser cladding effect
Technical Advantages
As a kind of surface repair and additive manufacturing technology, laser cladding has the following advantages:
1,High precision: the focusing and control of the laser beam can realize high-precision coating formation, and the thickness, shape and size of the coating can be precisely controlled, which is suitable for complex workpiece surfaces.
2,Low heat-affected zone: the melting and solidification speed during the laser melting process is very fast, and the melting zone and heat-affected zone are relatively small, thus reducing the risk of thermal impact and deformation on the substrate material.
3, good metallurgical connection: laser cladding can realize good metallurgical connection between the coating and the substrate material, there is no obvious crack and interface between the coating and the substrate.
4, excellent coating quality: laser cladding can realize high-density, dense and uniform coating, reduce the generation of porosity, defects and impurities, and improve the corrosion resistance, abrasion resistance, high temperature resistance and other properties of the coating.
5,Flexibility and adaptability: laser cladding is suitable for all kinds of metals, alloys and composite materials, which can realize the coating of different materials and meet the needs of different fields.
6, saving materials: laser cladding is a local heating and solidification process, only in the area to be coated with material input, can minimize the waste of materials and costs.
7,Repairable performance: laser cladding can be used to repair damaged part surfaces, improve their functionality and reliability, and extend their service life.
Technology application
Laser cladding technology has been widely used in the current society, covering many fields and industries. Below are some examples of current applications of laser cladding:
Aerospace industry: Laser cladding can be used to repair the surfaces of damaged aero-engine blades, turbine blades, combustion chambers and other critical parts. Repair through cladding technology can restore functional performance and extend the service life of parts.
Automobile manufacturing industry: laser cladding can improve the surface hardness, wear resistance and corrosion resistance of key parts such as automobile engines and transmissions. For example, coating ceramic materials on the inner wall of automobile cylinders can reduce friction and wear, and improve the efficiency and life of automobile engines.
Energy industry: Laser cladding can be applied to the surface protection and repair of energy equipment, such as the coating protection of power generation equipment and the repair of key components of nuclear power plants. By increasing the wear resistance and corrosion resistance of the coating, the reliability and efficiency of energy equipment can be improved.
Mold Manufacturing: Laser cladding can repair damaged mold surfaces and improve their wear resistance, corrosion resistance and service life. This plays a key role in preserving the accuracy and quality of molds and saves the cost of mold replacement.
Shipbuilding: Laser cladding can be used to repair the surfaces of key components such as propellers, transoms and hulls of ships. By increasing the hardness and corrosion resistance of the surface, the performance and durability of the ship can be improved.
Medical Device Manufacturing: Laser cladding can be used to manufacture key components of medical devices and provide high-precision coating protection. For example, surface coating of artificial joints and dental implants can improve their biocompatibility and durability.
