双丝大干伸长高速焊接工艺试验研究
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摘要
为了对双丝大干伸长高速焊接工艺进行研究,首先采用1 000～1 500 A系列焊接电流,在1~#焊丝30 mm、 50 mm、 70 mm三种不同干伸长,对应焊接电压34 V、 36 V、 38 V,焊接速度1 m/min条件下,进行了对比焊接试验,找出了1~#焊丝大焊接电流条件下,不同干伸长对焊丝熔化速度、焊缝熔深的影响规律;然后,采用双丝大干伸长焊接工艺进行了壁厚22 mm螺旋管高速焊试验,焊接速度从常规工艺的1.2 m/min提高到1.8～2.5 m/min。结果表明,焊缝外观成形良好,焊缝及热影响区低温冲击韧性有所改善,尤其热影响区改善显著,高速焊接头的抗拉强度与常规低速焊接相当。
In order to research double-wire high-speed welding process with longer wire extension, firstly using 1 000 ～ 1 500 A series welding current, in condition of 1~# wire extension of 30 mm, 50 mm and 70 mm, which corresponded to welding voltage of 34 V, 36 V and 38 V, and welding speed 1 m/min, comparative welding tests were carried out,and the influencing rule of different wire extension on wire melting rate and weld penetration of 1~# wire under the condition of high welding current were found out; then the double-wire welding process with longer wire extension was used to carry out the high-speed welding test of the spiral pipe with a wall thickness of 22 mm, and the welding speed increased from 1.2 m/min in the conventional process to 1.8～2.5 m/min. The results showed that weld visual had good formation, low temperature toughness of weld and heat affected zone were improved, especially in heat affected zone it was improved significantly, and the tensile strength of high-speed welding joint was equal to that of conventional low speed welding.
In order to research double-wire high-speed welding process with longer wire extension, firstly using 1 000 ～ 1 500 A series welding current, in condition of 1~# wire extension of 30 mm, 50 mm and 70 mm, which corresponded to welding voltage of 34 V, 36 V and 38 V, and welding speed 1 m/min, comparative welding tests were carried out,and the influencing rule of different wire extension on wire melting rate and weld penetration of 1~# wire under the condition of high welding current were found out; then the double-wire welding process with longer wire extension was used to carry out the high-speed welding test of the spiral pipe with a wall thickness of 22 mm, and the welding speed increased from 1.2 m/min in the conventional process to 1.8～2.5 m/min. The results showed that weld visual had good formation, low temperature toughness of weld and heat affected zone were improved, especially in heat affected zone it was improved significantly, and the tensile strength of high-speed welding joint was equal to that of conventional low speed welding.
引文
[1]赵波,付彦宏,王旭,等.焊丝大干伸长多丝埋弧焊接工艺试验研究[J].焊管,2018,41(4):7-12.
[2]周振丰,张文钺.焊接冶金与金属焊接性[M].北京:机械工业出版社,1988:179-185.
[3]龙红,李福元.埋弧焊技术的创新—切换导电增加焊丝通电长度的热丝埋弧焊[J].焊接技术,2001(增刊2):46-48.
[4]龙红,王钰伟,郭焱霞,等.预热焊丝埋弧焊技术在低温钢压力容器焊制中的应用[J].中国特种设备安全,2000, 16(6):9-10.
[5]龙红,梁树,宫毅辉,等.预热焊丝埋弧焊在尿素合成塔中的应用[J].压力容器, 1991(5):69-72.
[6]冯标,李春润,刘连增.热丝填充埋弧焊最佳工艺参数确定[J].焊接, 1994(7):9-12.
[7]龙红,李福元.增加焊丝通电长度的热丝埋弧焊热平衡分析[C]//第十次全国焊接会议论文集(第二卷).北京:中国机械工程学会,2001:365-368.
[8]梁桂芳.高效率埋弧自动焊接法[J].机械工人, 1981(8):20-24.
[9]杨芙,许强,柏久阳,等.双丝埋弧焊的应用及发展[J].现代焊接, 2012, 41(10):8-10.
[10]杨秀芝,余圣甫,姚润钢,等.双丝埋弧焊焊接工艺参数对焊缝成形的影响[J].电焊机, 2011, 41(3):60-64.
[11]王小龙,刘博,张敏.单电源双丝埋弧焊工艺参数对焊缝成型的影响[J].广东造船, 2017(6):42-44.
[12]张建优.变极性埋弧焊焊缝成形和熔化速度及工艺参数优化研究[D].天津:天津大学, 2012.
[13]马勇.双丝埋弧焊接头性能及焊缝几何尺寸研究[D].成都:西华大学, 2009.
[14]张绍庆.双丝埋弧焊在螺旋焊管中的应用[J].焊管,1998(6):12-14.
[15]许蓉蓉.影响埋弧双丝焊焊缝质量的各种因素分析[J].金属加工, 2007(4):42-44.
[2]周振丰,张文钺.焊接冶金与金属焊接性[M].北京:机械工业出版社,1988:179-185.
[3]龙红,李福元.埋弧焊技术的创新—切换导电增加焊丝通电长度的热丝埋弧焊[J].焊接技术,2001(增刊2):46-48.
[4]龙红,王钰伟,郭焱霞,等.预热焊丝埋弧焊技术在低温钢压力容器焊制中的应用[J].中国特种设备安全,2000, 16(6):9-10.
[5]龙红,梁树,宫毅辉,等.预热焊丝埋弧焊在尿素合成塔中的应用[J].压力容器, 1991(5):69-72.
[6]冯标,李春润,刘连增.热丝填充埋弧焊最佳工艺参数确定[J].焊接, 1994(7):9-12.
[7]龙红,李福元.增加焊丝通电长度的热丝埋弧焊热平衡分析[C]//第十次全国焊接会议论文集(第二卷).北京:中国机械工程学会,2001:365-368.
[8]梁桂芳.高效率埋弧自动焊接法[J].机械工人, 1981(8):20-24.
[9]杨芙,许强,柏久阳,等.双丝埋弧焊的应用及发展[J].现代焊接, 2012, 41(10):8-10.
[10]杨秀芝,余圣甫,姚润钢,等.双丝埋弧焊焊接工艺参数对焊缝成形的影响[J].电焊机, 2011, 41(3):60-64.
[11]王小龙,刘博,张敏.单电源双丝埋弧焊工艺参数对焊缝成型的影响[J].广东造船, 2017(6):42-44.
[12]张建优.变极性埋弧焊焊缝成形和熔化速度及工艺参数优化研究[D].天津:天津大学, 2012.
[13]马勇.双丝埋弧焊接头性能及焊缝几何尺寸研究[D].成都:西华大学, 2009.
[14]张绍庆.双丝埋弧焊在螺旋焊管中的应用[J].焊管,1998(6):12-14.
[15]许蓉蓉.影响埋弧双丝焊焊缝质量的各种因素分析[J].金属加工, 2007(4):42-44.