基于PLC控制的NZ30合金的焊接工艺与成形性能研究  

Study on PLC Controlled Welding Process and Formability of NZ30 Alloy

作　　者：韩会山[1] 孟令刚[1] 刘建刚 

机构地区：[1]邢台职业技术学院,河北邢台054000 [2]德龙钢铁有限公司炼钢厂,河北邢台054000

出　　处：《铸造技术》2017年第2期416-418,共3页Foundry Technology

摘　　要：从常规焊接工艺中常见的焊接裂纹形态出发,通过PLC控制激光焊接工艺参数,研究了激光功率、焊接速度、激光离焦量和侧吹气体流量对焊缝成形参数的影响,并分析了其作用原理。结果表明,NZ30合金中常见的焊接裂纹主要沿着晶界扩展,并呈现出结晶裂纹形态。PLC控制下NZ30合金的适宜焊接激光功率为7~8 k W,焊接速度为3~4 m/min,激光离焦量为0 mm,侧吹气体流量为30 L/min。The effect of laser power, welding speed, laser defocus and side blowing gas flow on welding formability were studied by PLC control laser welding process parameters. The results show that the common welding cracks of NZ30 alloy mainly along the grain boundaries, which appear in the form of crystal crack. The optimized laser power, welding speed,laser defocus, and side blowing gas flowrate are 7-8 k W, 3-4 m/min, 0 mm and 30 L/min, respectively.

关 键 词：PLC控制 NZ30合金 焊接工艺 成形性能 

分 类 号：TG456.7[金属学及工艺—焊接]