论文部分内容阅读
采用由IPG光纤激光、KUKA机器人和HIGHYAG激光头组成的激光熔覆系统,研究在316L不锈钢基体上激光熔覆308L焊丝工艺。探究激光功率、送丝速度及扫描速度等工艺参数对熔覆质量的影响,确定相对占优的熔覆工艺。进而制备检测样品,观测熔覆层的微观组织、显微硬度和拉伸性能。正交工艺研究表明:采用目前的光纤激光熔覆系统确定的相对占优工艺为激光功率3 kW,扫描速度4 mm/s,送丝速度40 mm/s,成形效果最好;采用优化的工艺,在搭接率为50%时,可以制备出表面波纹均匀,平整精度高的熔覆层。
A laser cladding system consisting of an IPG fiber laser, a KUKA robot and a HIGHYAG laser head was used to study the laser cladding of the 308L wire on a 316L stainless steel substrate. Explore laser power, wire feed speed and scanning speed and other process parameters on the quality of the cladding, to determine the relative dominant cladding process. Further, the test sample is prepared to observe the microstructure, microhardness and tensile property of the cladding layer. Orthogonal technology research shows that the laser beam power of 3 kW, the scanning speed of 4 mm / s and the wire feeding speed of 40 mm / s are the relative dominant technologies determined by the current fiber laser cladding system. The optimum forming process is achieved. , In the lap rate of 50%, you can prepare a uniform surface roughness, smooth formation of high cladding layer.