Green Reengineering-Application Of Laser Cladding In Chemical Industry

Laser cladding uses high energy laser as heat source, alloy powder as cladding material, through laser irradiation of alloy powder synchronously acting on the surface of the workpiece to quickly melt to form a melt pool. Then it quickly solidifies to form a dense, uniform and thickness controllable metallurgical bonding layer, which improves the wear resistance, corrosion resistance, high temperature resistance, oxidation resistance and other properties of metal parts. It not only can restore the failed parts, but also can significantly extend the service life of new parts.
 

By laser cladding technology, a coating with special properties is coated on the specified area of the workpiece surface, which can improve the surface performance of the workpiece, make the important parts have the characteristics of ultra-wear resistance and corrosion resistance, and greatly improve the service life of the parts.

After the production of ball valves in the chemical industry, the surface modification of the cladding is required to be 1.2mm thick, no porosity cracks and other defects, with high corrosion resistance requirements. The hardness of the cladding layer is above 55HRC.

In the petrochemical industry, the equipment is in a harsh working environment for a long time, which is easy to causes serious corrosion and severe wear of parts, and even leads to the complete scrapping of large expensive parts. Laser cladding technology provides the possibility for the repair of some expensive parts and inconvenient parts, and the strength of the repaired parts will be twice that of the original parts. The enterprise can save the cost of buying new parts.

Chemical equipment often has problems with parts including valves, pumps, impellers, large rotor journals, wheels, bushing, bushing and so on. The cladding repair after the failure of ball valve and shaft parts in the chemical industry requires the cladding thickness of 1mm, no porosity cracks and other defects, a certain corrosion resistance, and the hardness of the cladding layer is above 50HRC.

① The heat-affected zone of laser cladding on the matrix is small, and the workpiece deformation is small.

② Metallurgical bonding can be achieved between the cladding layer and the base material, and the dilution rate of the cladding material is low.

③ The cladding layer has small grain size and dense structure and can obtain high hardness, wear resistance and corrosion resistance.

④ Can achieve selective local fine repair, and effectively reduce the cost of repair.

⑤ The powder material system has a high adaptability, and most conventional and special metal powder materials can be fused to the surface of metal parts.

In addition, laser cladding can also be applied to other industries such as iron and steel metallurgy, automobile, construction machinery, mold manufacturing and shipbuilding, and has a very wide range of application prospects.

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.