| 一种防止高强铝合金焊接热裂纹产生的新方法 |
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| 引用本文： | 刘伟平,田锡唐,张修智. 一种防止高强铝合金焊接热裂纹产生的新方法[J]. 焊接学报, 1995, 16(2): 106-111 |
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| 作者姓名： | 刘伟平 田锡唐 张修智 |
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| 作者单位： | 大连铁道学院，哈尔滨工业大学 |
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| 摘 要： | 从焊接热裂纹产生的力学角度出发，首次提出了防止焊接热裂纹产生的焊缝有两侧随焊同步碾压法，并阐述了该法的基本原理，在自行研制的ＨＮＪ－１型焊接同步碾压机上，研究了该法对防止高强铝合金ＬＹ１２ＣＺ焊接热裂纹的有效性，理论分析和大量试验结果一致表明，采用这一新方法可以有效地防止高强铝合金ＬＹ１２ＣＺ焊接热裂纹的产生。
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| 关 键 词： | 碾压 焊接 热裂纹 铝合金 |
A new method for prevention of weld hot cracking |
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| Liu Weiping,Tian Xitang and Zhang Xiuzhi. A new method for prevention of weld hot cracking[J]. Transactions of The China Welding Institution, 1995, 16(2): 106-111 |
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| Authors: | Liu Weiping Tian Xitang Zhang Xiuzhi |
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| Affiliation: | Liu Weiping;Tian Xitang;Zhang Xiuzhi(Dalian Railway Institute)(Harbin Institute of Technology) |
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| Abstract: | Based on the mechanical aspect of formation of hot cracks in weldments,anew method, accomplished by Synchronous Rolling During Welding(SRDW)alongboth sides of the weld at a suitable distanee behind the welding arc,and its theoryhave been developed for preventing weld from hot cracking.With the speciallydeveloped HNJ-1 type welding and synchronous rolling machine, experiments werepcrfo rmed to investigate the effectiveness and feasibility of this method.Boththeoretical calculation and experiment results show that weld hot cracking in LY12CZaluminium alloy can be very effectively prevented by the new method.It is animportant new solution for prevention of weld hot cracking in welding of sheet metals. |
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| Keywords: | synchronous rolling weld hot cracking inverse strain method aluminium alloys |
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