激光熔覆液压支架立柱防腐耐磨涂层研究进展

胡红钰, 王跃飞, 严海心, 史建军, 吴多利

Research Progress on Laser Cladding Anti-corrosion and Wear-resistant Coatings for Hydraulic Support Column

HU Hongyu, WANG Yuefei, YAN Haixin, SHI Jianjun, WU Duoli

表1 液压支架涂层制备常用工艺优缺点

Table 1 Advantages and disadvantages of common preparation processes of coatings for the repair of hydraulic support columns

Processing Advantage Disadvantage Electroplating ① Low process costs ① Prone to defects ② High hardness ② Generating hazardous substances during the process Thermal spray ① Wide choice of coating materials ① The coating and the substrate are mainly mechanically bonded, and the bonding strength is weak ② Good overall performance ② Cracks may occur when unmelted powder hits the substrate at high speeds Laser cladding ① Metallurgical bonding of the coating to the substrate ① The coating is susceptible to cracking due to thermal stress ② Good density Arc melting copper ① Metallurgical bonding of the coating to the substrate ① High equipment costs ② Good electrical conductivity, thermal conductivity, self-lubricating properties ② Single copper coating performance is weak, need to add other alloying elements