| 电弧辅助活性TIG焊焊缝组织及性能分析 |
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| 引用本文： | 樊丁,刘自刚,黄勇,王新鑫. 电弧辅助活性TIG焊焊缝组织及性能分析[J]. 焊接学报, 2014, 35(4): 1-5 |
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| 作者姓名： | 樊丁 刘自刚 黄勇 王新鑫 |
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| 作者单位： | 1.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050;兰州理工大学有色金属合金及加工教育部重点实验室, 兰州 730050 |
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| 基金项目： | 国家自然科学基金资助项目(51074084);甘肃省自然科学基金资助项目(1010RJZA037) |
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| 摘 要： | 电弧辅助活性TIG焊(arc assisted activating TIG welding,AA-TIG焊)是一种新型高效焊接方式,该方法可以分为分离电弧AA-TIG焊和耦合电弧AA-TIG焊两种方式.试验采用不锈钢为母材,通过改变辅助电弧中氧气引入量,分析焊缝组织及性能的变化规律.结果表明,焊缝组织以奥氏体为主,在奥氏体边界析出少量的铁素体,此时焊缝的抗拉强度变化不大,随着氧气引入量的增大,焊缝的低温冲击韧性有所下降;相对于分离电弧AA-TIG焊,耦合电弧AA-TIG焊焊缝的冲击韧性下降较少.在氧气的引入量低于2 L/min时,耦合电弧AA-TIG焊焊缝冲击韧性较好,甚至超过普通TIG焊焊缝.
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| 关 键 词： | 不锈钢 AA-TIG焊 氧气引入量 组织及性能 |
| 收稿时间： | 2012-12-11 |
Structure and properties of arc assisted activating TIG welding |
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| FAN Ding,LIU Zigang,HUANG Yong and WANG Xinxin. Structure and properties of arc assisted activating TIG welding[J]. Transactions of The China Welding Institution, 2014, 35(4): 1-5 |
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| Authors: | FAN Ding LIU Zigang HUANG Yong WANG Xinxin |
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| Affiliation: | State Key Laboratory of Advanced Processing and Recycling of Nonterrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;Key Laboratory of Non-ferrous Metal Alloys(The Ministry of Education), Lanzhou University of Technology, Lanzhou 730050, China,State Key Laboratory of Advanced Processing and Recycling of Nonterrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;Tangshan Kai Yuan Welding Automation Technology Institute, Tangshan 063020, China,State Key Laboratory of Advanced Processing and Recycling of Nonterrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;Key Laboratory of Non-ferrous Metal Alloys(The Ministry of Education), Lanzhou University of Technology, Lanzhou 730050, China and State Key Laboratory of Advanced Processing and Recycling of Nonterrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | Arc assisted Activating TIG welding is a new welding process with high efficiency,which includes separated arc AA-TIG and coupled arc AA-TIG. In this paper,with stainless steel as the base metal,the effect of quantity of O2 in the assisting arc on the structure and properties of the weld was investigated. The experimental results show that the weld structure consisted of mainly austenite with a small amount of ferrite distributing in the austenite boundaries,and the tensile strength of the weld was consistent. With the increase of the introduced quantity of O2,the low-temperature impact toughness of the weld slightly decreased. The impact toughness of the weld dropped less in coupled arc AA-TIG welding than in separated arc AA-TIG welding. When the introduced quantity of O2 was less than 2 L/min, the impact toughness of weld in coupling arc AA-TIG weld was even better than that in traditional TIG welding. |
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| Keywords: | stainless steel arc assisted activating TIG welding introduced quantity of O2 structure and property |
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