节点文献
核阀密封面激光熔覆层耐蚀性能研究
Study on the Corrosion Resistance of Laser Cladding Layer on the Sealing Surface of Nuclear Valve
【Author】 WANG Xin-lin1 LI Bi-wen2 ZHENG Qi-guang3 (1 Department of electrical engineering, Nanhua University, Hengyang, 421001; 2 Department of Mechanical Engineering, Nanhua University, Hengyang, 421001; 3 National laboratory of laser technology, HUST, Wuhan, 430074)
【机构】 南华大学电气工程学院； 南华大学机械工程学院； 华中科技大学激光技术国家重点实验室；
【摘要】 采用5KW横流CO2激光器对1Cr18Ni9Ti核阀密封面进行了钴基合金激光熔覆处理,测定了激光熔覆层的耐腐蚀性能,并将其微观结构及质量、耐腐蚀性能与等离子喷焊处理的同种试件进行了对比分析,结果表明:激光熔覆层具有优良的综合抗腐蚀性能,具有组织细密、晶粒度高、硬度高与稀释率低的特点。在此基础上对激光熔覆层的耐腐蚀性能进行了分析探讨。
【Abstract】 The sealing surface of nuclear valve with 1Cr18Ni9Ti base metal was clad with Co base alloy powder by using a 5KW CW transverse flow CO2 laser. The corrosion resistance of laser cladding layer was determined, the microstructure and corrosion resistance of laser cladding layer was compared with that of plasma spurt welding layer on the same kind of test piece. The result shows that the corrosion resistance of laser cladding layer is much better than that of plasma spurt welding layer, the laser cladding layer has fine microstructure, high crystal granularity, high hardness and low dilution. Base on these investigations, the corrosion resistance of laser cladding layer is also analyzed.
【Key words】 Laser cladding； Corrosion resistance； Sealing surface of nuclear valve； Plasma spurt welding；
- 【会议录名称】 大珩先生九十华诞文集暨中国光学学会2004年学术大会论文集
- 【会议名称】中国光学学会2004年学术大会
- 【会议时间】2004
- 【会议地点】中国杭州
- 【分类号】TL351
- 【主办单位】中国光学学会