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纸质出版日期： 2024-05-25 ，
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苏立虎.双丝工艺在桥梁U肋焊接中的应用研究［J］.电焊机，2024，54（5）：92-97.
SU Lihu.Research on the Application of Double Wire Process in Bridge U-rib Welding[J].Electric Welding Machine, 2024, 54(5): 92-97.
桥梁U肋通常采用多台焊机同时作业的方式进行生产，可选用熔化极气保焊机或埋弧焊机，焊接速度一般约为0.4 m/min。采用Tandem双丝焊接工艺进行试验，在保证焊接质量的前提下，焊接速度可提升至1.2 m/min，极大提高了生产效率。试验发现当多套双丝焊接设备同时焊接至U肋末端时，极易出现电弧磁偏吹的现象，影响了U肋末端的焊接熔深、焊缝成形，造成焊接不良。针对该问题开发了一种抑制电弧磁偏吹的控制方法，该方法主要是在脉冲电流的基值阶段增加第二脉冲电流从而提高电弧的抗干扰能力。第二脉冲的峰值电流、峰值时间和个数影响了抑制电弧偏吹的效果，根据第一脉冲基值维持时间计算出第二脉冲的个数并存储在焊机中，第二脉冲峰值电流和峰值时间根据基值反馈电压的变化量进行实时调整。同时研究了双丝焊接工艺中主机和从机何时触发输出第二脉冲，试验发现主机按照焊机中存储的参数触发输出第二脉冲，从机触发第二脉冲的时刻受主机控制，当主机处于脉冲峰值下降阶段时触发从机输出第二脉冲，焊接效果最好。
Bridge U ribs are usually produced by multiple welding machines at the same time
and the melting pole gas welding machine or submerged arc welding machine can be selected
and the welding speed is generally about 0.4 m/min. This paper uses Tandem double wire welding process for testing
under the premise of ensuring welding quality
the welding speed can be increased to 1.2 m/min
which greatly improves the production efficiency. The test found that when multiple sets of double-wire welding equipment were welded to the end of the U rib at the same time
the phenomenon of arc magnetic bias blowing was very easy to occur
which affected the welding penetration and weld formation at the end of the U rib
resulting in poor welding. To solve this problem
a control method to suppress arc bias blowing was developed
which mainly increases the second pulse current in the base value stage of the pulse current to improve the anti-interference ability of the arc. The peak current
peak time and number of the second pulse affect the effect of suppressing arc bias
and the number of the second pulse is calculated according to the base value maintenance time of the first pulse and stored in the welding machine
and the peak current and peak time of the second pulse are adjusted in real time according to the change of the base value feedback voltage. At the same time
when the main machine and slave trigger the output of the second pulse in the double wire welding process
the test finds that the main machine triggers the output of the second pulse according to the parameters stored in the welding machine
and the moment when the slave triggers the second pulse is controlled by the host
and when the host is in the pulse peak decline stage
the slave outputs the second pulse
and the welding effect is the best.
双丝焊接电弧磁偏吹U肋脉冲电流峰值
tandemarcblowU-ribpulsepeak
庞延波，靳泽. 钢板面板U肋全熔透焊缝疲劳性能试验研究［J］. 公路，2022，67（11） ：124-131．
PANG Y B，JIN Z. Experimental Study on the Fatigue Performance of Full Penetration Welds in Steel Plate Panel U Ribs［J］. Highway， 2022， 67（11）： 124-131.
杨良泽，吉伯海，袁周致远，等. 钢箱梁顶板-U肋焊缝斜裂纹的受力特征及其对焊趾的影响［J］. 扬州大学学报（自然科学版） ，2022，25（03） ：61-68．
YANG L Z，JI B H，YUANZHOU Z Y，et al. The stress characteristics of oblique cracks in the top plate - U rib weld of steel box beams and their impact on the weld toe［J］. Journal of Yangzhou University （Natural Science Edition）， 2022，25（03）： 61-68.
苏立虎. Tandem双丝气保焊相位控制方法的研究［J］. 电焊机，2021，51（6）：57-62.
SU L H. Research on Phase Control Method of Tandem Double Wire Gas Shielded Welding［J］. Electric Welding Machine，2021，51（6）：57-62.
郑佳，李亮玉，钟蒲，等. 双丝三电弧焊中熔滴过渡及焊缝成形机理［J］. 焊接学报，2019，40（7）：31-36．
ZHENG J，LI L Y，ZHONG P，et al.Mechanism of droplet transfer and weld formation in double wire triple arc welding［J］. Journal of Welding，2019，40（7）：31-36.
杨新华. 电弧焊方法中磁偏吹产生原因及防止措施［J］. 热加工工艺，2015，44（15）：233-238．
YANG X H. Causes and Preventive Measures for Magnetic Bias Blowing in Arc Welding Methods［J］. Hot Working Technology，2015，44（15）：233-238.
WU B，LIU J，SONG Q，et al. Controllability of joint integrity and mechanical properties of friction stir welded 6061-T6 aluminum and AZ31B magnesium alloys based on stationary shoulder［J］. High Temperature Materials and Processes， 2019， 38： 557-566．
SONG Q，WANG H R，JI S D，et al.Improving joint quality of hybrid friction stir welded Al/Mg dissimilar alloys by RBFNN-GWO system［J］. Journal of Manufacturing Processes， 2020， 59： 1-10.
韦宝成，孙昕辉，杨尚玉. 浅谈LNG储罐9%Ni钢焊接过程中的磁偏吹问题［J］. 焊接技术，2020，49（6）：98-102．
WEI B C，SUN X H，YANG S Y. Discussion on Magnetic Bias Blowing during the Welding Process of 9% Ni Steel for LNG Storage Tanks［J］. Welding Technology，2020，49（6）：98-102.
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