埋弧自动焊焊接工艺参数对焊缝成型的影响-弥海涛.doc

埋弧自动焊焊接工艺参数对焊缝成型的影响 摘 要 本文首先对埋弧焊各参数焊缝成形的影响进行了分析，发现焊接电流、电弧电压、焊接速度、焊丝直径及干伸长度、坡口及间隙的形状及尺寸、电流种类与极性等参数都影响埋弧自动焊焊缝成形，而主要因素为：焊接电流、焊接速度和坡口形状。 本文通过长期积累埋弧自动焊焊接在生产过程中焊接熔深与焊接电流、焊接速度和坡口形状等参数间的关系的数据，在今后的生产过程中应该防止发生。 关键字： 埋弧自动焊； 工艺参数； 影响； 确定及选择； 1. 目录 1摘要···············································1 2关键字·············································1 3前言················································3 4焊接材料与设备······································5 5焊接过程及原理······································3 6焊接工艺参数的选择方法······························5 6.1、焊接工艺参数的选择方法·································5 6.2、焊接工艺参数的选择程序·································5 7焊接工艺参数的选择及确定····························6 7.1 焊接电流······································6 7.2电流种类与极性···································6 7.3 电弧电压······································6 7.4 焊接速度······································6 7.5焊丝直径及干伸长度·······························7 7.6坡口及间隙的形状及尺寸····························8 8焊接工艺参数对焊缝成型的影响························8 8.1、焊接电流I及电流极性对焊缝成形的影响··················8 8.2、电弧电压的影响·········································9 8.3、焊接速度V的影响·······································10 8.4、焊丝直径与干伸长的影响·································11 8.5、焊丝倾角a的影响·······································12 8.6、焊件位置的影响·········································13 8.7、装配间隙与坡口角度的影响·······························13 8.8、焊剂的影响··············································13 9 影响焊接过程的因素分析·····························13 9.1操作人员因素······································ 9.2机器设备因素······································ 9.3材料因素·········································· 9.4工艺方法因素······································ 10.结论························································14 11.谢辞······················································18 12.参考文献···········································18 前言 ? 焊接技术作为制造业的传统基础工艺与技术，在工业中应用的历史并不长，但它的发展却是非常迅速的。在短短的几十年中焊接已在许多工业部门中为工业经济的发展作出了重要贡献，在各个重要的领域如航空航天、造船、汽车、桥梁、电子信息、海洋钻探、高层建筑金属结构中都广泛应用，使焊接成为一