不锈钢DP-TIG焊接接头组织与性能

材料导报

2020, Vol. 34

Issue (Z2): 462-464

金属与金属基复合材料

不锈钢DP-TIG焊接接头组织与性能

刘自刚^1,2, 唐海鸿^1,2, 刘云华^1,2, 陈亮², 陈勇², 陈飞¹

1 诺力智能装备股份有限公司,湖州 313100
2 浙江省智能物流装备工程技术研究中心,湖州 313100

Structure and Property of Stainless Steel Deep Penetration TIG Welding Welded Joint

LIU Zigang^1,2, TANG Haihong^1,2, LIU Yunhua^1,2, CHEN Liang², CHEN Yong², CHEN Fei¹

1 Noblelift Intelligent Equipment Co. Ltd.,Huzhou 313100, China
2 Engineering Research Center of Intelligent Logistics Equipment of Zhejiang Province,Huzhou 313100, China

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摘要深熔TIG焊接方法(Deep penetration TIG welding,DP-TIG焊 )是一种新型TIG焊接方法。该方法具有单道焊接熔深大、焊接速度快、熔敷速率高等优点。试验针对不同板厚的不锈钢板材,采用合适的焊接工艺参数,研究不同焊接热输入量对焊缝组织与力学性能的影响。结果表明:焊缝的组织为奥氏体基体上分布有少量树枝状铁素体。焊缝的低温冲击韧性随着焊接热输入量的增大而下降,但焊缝区的低温冲击韧性优于热影响区的低温冲击韧性。焊缝的抗拉强度和硬度随焊接热输入量的增大变化不明显。

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关键词: 不锈钢 DP-TIG焊热输入量组织及性能

Abstract: Deep penetration TIG welding (DP-TIG welding) is a new type of TIG welding.The welding method has the advantages of large welding depth, high welding speed and high deposition rate.The effects of different welding heat input on the microstructure and mechanical properties of stainless steel plates with different thickness were studied by using appropriate welding parameters.The results show that there is a small amount of dendritic ferrite on the austenitic matrix.The low temperature impact toughness of the weld decreases with the increase of welding heat input, but the low temperature impact toughness of the weld zone is better than that of the heat affected zont.The tensile strength and hardness of welds do not change obviously with the increase of welding heat input.

Key words: stainless steel DP-TIG welding heat input microstructure and property

出版日期: 2020-11-25 发布日期: 2021-01-08

ZTFLH:

TG444

通讯作者: xuezhiwu125@163.com

作者简介: 刘自刚,2013年6月毕业于兰州理工大学,获得工学硕士学位,焊接工程师。主要从事新型高效焊接方法及焊接自动化设备等方面的研究,已发表论文7篇。

引用本文:

刘自刚, 唐海鸿, 刘云华, 陈亮, 陈勇, 陈飞. 不锈钢DP-TIG焊接接头组织与性能[J]. 材料导报, 2020, 34(Z2): 462-464.
LIU Zigang, TANG Haihong, LIU Yunhua, CHEN Liang, CHEN Yong, CHEN Fei. Structure and Property of Stainless Steel Deep Penetration TIG Welding Welded Joint. Materials Reports, 2020, 34(Z2): 462-464.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2020/V34/IZ2/462

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