摘要
实验研究了保护气参数,如气体类型、流量、混合比例、吹气角度、落点位置等对不锈钢光纤激光焊接熔深的影响。结果表明,气体类型对焊接熔深有显著影响,且熔深按照He>N2>Ar的顺序排列;增大气体流量、减小吹气角度、或者增加Ar/He混合气体中He的比例,都会增加熔深;当气体落点位置距激光束光斑中心±1.5mm左右时熔深最大,而在激光束光斑中心时最小,二者比较熔深的增加值约为50%。
The influences of shielding gas parameters, such as gas type, flow rate, mixing ratio, shielding angle and landing position on the fiber laser welding of stainless steel were researched. It was found that the bead penetration depth depends on the type of shielding gas, and the depth gradually increases by using the shielding gas in the sequence of Ar, N： and He. The results show that by rising the flow rate, reducing the shielding angle, or increasing the volume ratio of He in Ar/He mixing gas, the bead penetration increases. As the gas landing position is ±1.5 mm away from the laser spot, the bead penetration depth is maximum; but when it is at the laser spot, the bead penetration is minimum. It raises about 50%, compared with the maximum and minimum penetration depth.
出处
《热加工工艺》
CSCD
北大核心
2011年第23期126-129,共4页
Hot Working Technology
基金
国家863高技术研究发展计划(2008AA030116)
关键词
光纤激光焊接
不锈钢
保护气
焊接熔深
fiber laser welding
stainless steel
shielding gas
bead penetration depth
