尚舜化工安装工段手工电弧焊培训基础资料 1 目录 1 焊接的基本原理 .................................................................................................... 4 1 .1 焊接电弧的引燃 ........................................................................................... 4 1 .2 焊接电弧的构成 ........................................................................................... 5 1 .3 焊接电弧的静特性 ....................................................................................... 6 1 .4 焊接时的熔滴过渡 ....................................................................................... 7 1 .5 焊接熔池与冶金特点 ................................................................................. 1 0 1 .6 焊缝的形成和结晶 ..................................................................................... 1 1 1 .7 熔化金属与气体的相互作用 ..................................................................... 1 2 1 .8 熔渣的作用 ................................................................................................. 1 5 1 .9 焊接接头的组织 ......................................................................................... 1 6 2 主要焊接设备 ...................................................................................................... 1 7 2 .1 对手弧焊设备的要求 ................................................................................. 1 7 2 .2 选择手弧焊机的方法 ................................................................................. 1 8 3 焊接工艺 .............................................................................................................. 1 9 3 .1 焊接热循环与焊接工艺的关系 ................................................................. 1 9 3 .2 金属焊接性与焊接工艺的关系 ................................................................. 2 0 3 .3 焊条 ................................................
