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Characteristics of the electrode melting phenomena in narrow gap MAG high-rotating-speed arc welding 被引量:2
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作者 ZHAO Bo,FAN Chenglei,and YANG Chunli State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China 《Rare Metals》 SCIE EI CAS CSCD 2007年第S1期291-295,共5页
The influence of rotating speed on metal transfer and the wire metal speed was studied in the high rotating speed arc narrow gap welding.The results indicate that the high rotating speed arc has benefit on the metal t... The influence of rotating speed on metal transfer and the wire metal speed was studied in the high rotating speed arc narrow gap welding.The results indicate that the high rotating speed arc has benefit on the metal transfer,and that with the rotating speed increasing,the droplet volume decreases.It is shown that the rotating speed has little influence on the wire metal speed with DC electrode positive polarity(DCEP),but the melting speed decreases with increasing of rotating speed in DC electrode negative polarity(DCEN). 展开更多
关键词 narrow gap welding dcen mag welding high-rotating-speed arc melting speed
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单丝高熔敷率MAG焊接工艺的研究 被引量:4
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作者 殷树言 陈树君 华爱兵 《电焊机》 北大核心 2009年第1期73-76,共4页
从提高焊接电流和电弧热熔化焊丝等效电压的角度出发,提出了两种新型的单丝高熔敷率MAG焊接工艺—细丝大电流MAG焊和直流正接MAG焊,并借助高速摄像手段分析了这两种焊接工艺的电弧行为、熔滴过渡机制以及焊缝成形特点。试验结果表明,通... 从提高焊接电流和电弧热熔化焊丝等效电压的角度出发,提出了两种新型的单丝高熔敷率MAG焊接工艺—细丝大电流MAG焊和直流正接MAG焊,并借助高速摄像手段分析了这两种焊接工艺的电弧行为、熔滴过渡机制以及焊缝成形特点。试验结果表明,通过选择合适的保护气体φ(Ar)98%+φ(O2)2%使得电弧烁亮区包覆了大部分液锥和全部的液流束且熔滴过渡基本在电弧烁亮区内部进行,可获得稳定的细丝大电流MAG焊;同样选择φ(Ar)98%+φ(O2)2%的保护气,能够获得电弧较为稳定、焊接飞溅较小、焊缝成形良好的直流正接MAG焊。 展开更多
关键词 高熔敷率 细丝大电流mag 直流正接mag
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