Laser cladding technology emerged in the 1980s, which is the use of high-energy density laser beam to make a special performance of the material in the basic material and fusion with each other. The formation of the alloy cladding layer and matrix composition and properties are completely different.
The modern petrochemical industry adopts a continuous large-scale production model, and the supply and demand of upstream and downstream devices are closely linked. The stability of each device will directly affect the stability of the production line. Because the machine and equipment work in harsh environments for a long time, it is easy to lead to corrosion and wear of parts. This puts forward high requirements for the reliability, safety and integrity of the equipment used.
Typical failure-prone parts in the petrochemical industry include impellers, large rotor journals, roulette, bushing, bearing shells, etc., as well as large rotors, moving blades and static blades of large generator sets.
Large rotors and shaft parts are repaired using laser cladding technology, and the size of the journal can be restored without preheating the workpiece. Moreover, the subsequent processing amount is small, it is not easy to produce metallurgical cracks, and the hardness can reach HR60 or more. The strength of repaired parts can even reach more than 90% of the original strength. The most important thing is that the repair cost is less than 1/5 of the replacement price, and the maintenance time is shortened, which solves the rapid repair problem that must be solved in the continuous operation of major complete sets of equipment in the petrochemical industry. In addition, the coating of super wear-resistant alloy on the surface of key components can greatly improve the service life without deformation of the surface of the parts. The laser cladding treatment of the mold surface can not only improve the strength of the mold, but also reduce the manufacturing cost by 2/3 and shorten the manufacturing cycle by 4/5.
For the repair of crankshaft, if plasma spraying is used, the bonding strength between coating and substrate is not enough. After the installation, the safe running of the device may be affected. However, it is difficult to ensure the wear resistance of the repaired layer and no cracks in the matrix by surfacing welding. In view of these conditions, laser cladding technology has become the first choice of repair solutions.
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.