静音钢板CO_2气体保护焊接工艺
|
摘要
以静音钢板为研究对象,基于实车装配需求对静音钢板的CO_2气体保护焊接工艺进行研究和改善。通过对不同组合焊接试样接头拉伸强度及硬度和组织的检测,进行预加焊点新工艺的可行性验证,对比分析焊接工艺改进前后接头强度及断裂模式的差异。结果表明,静音钢板的结构特性是导致可焊性差和接头强度稳定性差的主要原因;通过对静音钢板预加焊点新工艺的对策验证,有效提升了静音钢板CO_2气体保护焊的有效性,改善了静音钢板底层焊接性能不良的问题,减少了接头焊接不良问题发生概率。
In this paper,the CO_2 arc welding ability of quiet steel has been studied,based on the requirement of assembly. Through the detection of mechanical and metallographic structure in different forms,the research reveals the welding feasibility of pre-resistance spot welding by comparison of joint strength and fracture mode between the primary process and improved process. The results show that the structure characteristic is the main factor to induce the weakness of the welding ability and poor stability of joint strength. The strategy of pre-resistance spot welding on the quiet steel improves the availability of CO_2 arc welding process and reduces the probability of the occurrence of unfavorable welding.
In this paper,the CO_2 arc welding ability of quiet steel has been studied,based on the requirement of assembly. Through the detection of mechanical and metallographic structure in different forms,the research reveals the welding feasibility of pre-resistance spot welding by comparison of joint strength and fracture mode between the primary process and improved process. The results show that the structure characteristic is the main factor to induce the weakness of the welding ability and poor stability of joint strength. The strategy of pre-resistance spot welding on the quiet steel improves the availability of CO_2 arc welding process and reduces the probability of the occurrence of unfavorable welding.
引文
[1]康永林,王琳,王波,等.减振钢板基本成形性研究[J].塑性工程学报,2001,8(1):47-50.
[2]宋志刚,孙卫和.层压复合材料的工艺性能及使用性能[J].锻压技术,2007,32(1):43-46.
[3]陈劼实,陈军,黄元辰,等.树脂复合减振钢板法向黏结强度与扩孔性能的试验研究[J].上海交通大学学报,2011,45(6):920-923.
[4]王勇,陈军,阮雪榆.夹层钢板冲压的成形机理与缺陷分析[J].塑性工程学报,2006,13(4):49-53.
[5]陈磊,张立文,史从学,等.减振复合钢板的成形性及其数值模拟研究进展[J].金属成形工艺,2002(5):43-45.
[6]毛小春,姚建新,翁思源.宝钢减振复合钢板[J].材料科学与工艺,2001,9(增刊):776-779.
[7]黄胜,陈军,李海波,等.加载速度和存放时间对树脂复合减振板弯曲类回弹的影响规律[J].塑性工程学报,2010,17(5):19-22.
[8]王勇,陈军,唐炳涛,等.基于有限元模拟的树脂复合减振钢板拉深成形性能预测[J].上海交通大学学报,2007,41(10):1586-1589.
[9]吕成,张国梁,张立文,等.高分子复合减振钢板的研究及其应用进展[J].机械工程材料,2005,29(3):4-6.
[10]金泉军.静音钢板的焊接性能研究[J].电焊机,2011,41(9):92-98.
[2]宋志刚,孙卫和.层压复合材料的工艺性能及使用性能[J].锻压技术,2007,32(1):43-46.
[3]陈劼实,陈军,黄元辰,等.树脂复合减振钢板法向黏结强度与扩孔性能的试验研究[J].上海交通大学学报,2011,45(6):920-923.
[4]王勇,陈军,阮雪榆.夹层钢板冲压的成形机理与缺陷分析[J].塑性工程学报,2006,13(4):49-53.
[5]陈磊,张立文,史从学,等.减振复合钢板的成形性及其数值模拟研究进展[J].金属成形工艺,2002(5):43-45.
[6]毛小春,姚建新,翁思源.宝钢减振复合钢板[J].材料科学与工艺,2001,9(增刊):776-779.
[7]黄胜,陈军,李海波,等.加载速度和存放时间对树脂复合减振板弯曲类回弹的影响规律[J].塑性工程学报,2010,17(5):19-22.
[8]王勇,陈军,唐炳涛,等.基于有限元模拟的树脂复合减振钢板拉深成形性能预测[J].上海交通大学学报,2007,41(10):1586-1589.
[9]吕成,张国梁,张立文,等.高分子复合减振钢板的研究及其应用进展[J].机械工程材料,2005,29(3):4-6.
[10]金泉军.静音钢板的焊接性能研究[J].电焊机,2011,41(9):92-98.