Hybrid fiber laser - Arc welding of thick section high strength low alloy steel
Hybrid fiber laser - Arc welding of thick section high strength low alloy steel
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DOI：
10.1016/j.matdes.2011.02.002
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发表时间：
2011-06-01
影响因子：
8.4
通讯作者：
Nolting, A.
中科院分区：
文献类型：
--
作者：
Cao, X.;Wanjara, P.;Nolting, A.
激光-金属活性气体混合电弧焊是一种新兴的焊接技术，在造船领域具有广阔的应用前景。该技术结合了激光和MAC弧焊技术的协同特性，允许高能量密度的过程，并具有装配间隙公差。由于激光弧焊的热输入大于激光弧焊，但远小于MAC弧焊，因此获得了较窄的焊缝和有限的热影响区，从而使残余应力和变形最小化。此外，在给定的激光功率下，增加MAC电弧可以增加穿透深度，这可以转化为更快的焊接速度或更少的焊道数，以实现厚板的单面焊接。本文通过对坡口形状、尺寸和工艺参数的优化，成功地将一种新型光纤激光-弧焊混合焊接系统应用于9.3 mm厚对接接头的单道焊透。爱思唯尔有限公司版权所有版权所有。
Hybrid laser - metal active gas (MAC) arc welding is an emerging joining technology that is very promising for shipbuilding applications. This technique combines the synergistic qualities of the laser and MAC arc welding techniques, which permits a high energy density process with fit-up gap tolerance. As the heat input of hybrid laser - arc welding (HLAW) is greater than in laser welding, but much smaller than in MAC arc welding, a relatively narrow weld and restricted heat affected zone (HAZ) is obtained, which can minimize the residual stress and distortion. Furthermore, adding MAC arc can increase the penetration depth for a given laser power, which can translate to faster welding speeds or fewer number of passes necessary for one-sided welding of thick plates. In this work, a new hybrid fiber laser - arc welding system was successfully applied to fully penetrate 9.3 mm thick butt joints using a single-pass process through optimization of the groove shape, size and processing parameters. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.