基于双弧超声激励的30钢焊缝性能研究
Study on Weld Performance of 30 Steel Based on Twin-arc Ultrasonic Excitation
汤天罡1， 王建军2
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作者单位：(1.哈尔滨东安发动机公司 项目管理部，黑龙江 哈尔滨 150066； 2.上海第二工业大学 电子与电气工程学院， 上海201209)
中文关键字：双弧TIG焊； 超声激励； 共熔池； 30钢； 焊缝性能
英文关键字：twin-arc TIG welding; ultrasonic excitation; common molten pool; 30 steel; weld performance
中文摘要：发展了一种新的双弧TIG焊方法，双弧系统由普通主TIG电弧和超声激励TIG电弧共同组成。超声电弧向焊接熔池注入超声波激励，改善焊缝接头性能。利用主电弧作为主热源，实现焊缝性能与焊接效率的双重改善。将该方法用于30钢的TIG焊接过程，实验分析表明，30钢焊缝微观组织出现了明显的细化，抗拉性能得到明显提高。
英文摘要：A new method of twin-arc TIG welding was developed, the welding will be completed by jointly using combined additional ultrasonic arc and main arc technology. The additional arc was used for injecting ultrasonic excitation into the molten pool to improve weld quality, and the main arc as main heat source to increase deposition efficiency. The method was used for 30 steel TIG welding experiments and metallographic analysis shows that the method can thin the microcosmic grain of weld metal. The tensile testing which is under nature temperature indicates that the method can improve tensile properties of the weld metal effectively.