Full penetration laser beam welding of thick duplex steel plates with electromagnetic weld pool support
Full penetration laser beam welding of thick duplex steel plates with electromagnetic weld pool support
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DOI：
10.2351/1.4944103
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发表时间：
2016-05-01
影响因子：
2.1
通讯作者：
Rethmeier, Michael
中科院分区：
文献类型：
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作者：
Avilov, Vjaceslav;Fritzsche, Andre;Rethmeier, Michael
在 PA 位置对厚度达 20 mm 的 2205 双相钢板进行了全熔透高功率焊珠激光束焊接试验。使用非接触式感应电磁 (EM) 熔池支撑系统来防止熔体重力脱落。使用 IPG 光纤激光器 YLR 20000 和 Yb:YAG 薄盘激光器 TruDisk 16002 进行了 15 mm 厚板的焊接实验。对于 1.0 和 0.5 m min(-1) 的焊接速度，实现完全熔透所需的激光功率分别为 10.9 和 8.56kW。没有熔池支撑的参考焊缝显示出过多的根部下垂。对于两个焊接速度值，我们发现完全补偿根部侧下垂所需的交流 (AC) 功率的最佳值约为 1.6 kW。相同的 EM 熔池支撑系统用于 20 mm 厚板的焊接测试。达到完全穿透 0.5 m min(-1) 所需的激光束功率（通快 Yb:YAG 薄盘激光器 TruDisk 16002）为 13.9 kW。没有电磁熔池支撑的全熔透焊接是不可能的——表面张力无法阻止熔体的重力滴落。完全补偿重力所需的交流功率为 2 kW。 (C) 2016 年美国激光研究所。
Full penetration high power bead-on-plate laser beam welding tests of up to 20 mm thick 2205 duplex steel plates were performed in PA position. A contactless inductive electromagnetic (EM) weld pool support system was used to prevent gravity drop-out of the melt. Welding experiments with 15 mm thick plates were carried out using IPG fiber laser YLR 20000 and Yb:YAG thin disk laser TruDisk 16002. The laser power needed to achieve a full penetration was found to be 10.9 and 8.56kW for welding velocity of 1.0 and 0.5 m min(-1), respectively. Reference welds without weld pool support demonstrate excessive root sag. The optimal value of the alternating current (AC) power needed to completely compensate the sagging on the root side was found to be approximate to 1.6 kW for both values of the welding velocity. The same EM weld pool support system was used in welding tests with 20 mm thick plates. The laser beam power (TRUMPF Yb:YAG thin disk laser TruDisk 16002) needed to reach a full penetration for 0.5 m min(-1) was found to be 13.9 kW. Full penetration welding without EM weld pool support is not possible-the surface tension cannot stop the gravity drop-out of the melt. The AC power needed to completely compensate the gravity was found to be 2 kW. (C) 2016 Laser Institute of America.