API抽油机游梁的CO_2气体保护焊接  

CO_2 Gas Shield Welding of API Beam Pumping Unit

作　　者：王海飞[1] 王国红[1] 

机构地区：[1]长庆油田公司机械制造总厂,甘肃庆阳745217

出　　处：《机械管理开发》2009年第6期113-113,115,共2页Mechanical Management and Development

摘　　要：API抽油机游梁结构为大型工字梁结构,由腹板为16 mm、翼板为25 mm的16 Mn钢板组焊而成,16 Mn钢由于含有一定的合金元素,碳当量值0.39%,具有一定的淬硬倾向,在大厚板和冷却速度过快的情况下焊接,容易出现冷裂纹(160型号抽油机游梁组装后总长5 005 mm,高600 mm,宽250 mm,要求焊后直线度的全长误差小于5 mm,对称度小于2.5 mm。侧板两侧没有机加工余量。)从焊件结构来看,工字梁长度与截面比较大,属细长杆类,焊接过程中极易变形且变形情况复杂,因此,工字梁的焊接变形控制成为难题。采用合理的焊接顺序,能够有效地控制大型工字梁的焊接变形;通过调节焊接工艺参数以及采取合适的工艺措施,可以解决16 Mn钢焊接时的开裂问题,获得质量优良的焊缝。API beam pumping unit is large I-beam struetwre,is welding together by he web for 16 mm and wing for 25mm, After assemble Unit 160 is with length 5005mm, height 600mm,width 250mm, Straightness total error is less than 5 mm, Symmetry is less than 2.5mm after welding There＇s no machine allowance on both sides.16mn steel which contains a certain mouvt of alloying elemeats, carbon 0.39%,and has a certain hardening tendeney, uhen the thicknessis large and cooling speed is fast, is prone to crackng.It can control welding deformation effectively through taking reasonable order.By adijusting the welding parameters and taking appropriate measures, cracking problem can be solued and high quality weld will be got.）

关 键 词：API抽油机 CO2 焊接 

分 类 号：TG446.2[金属学及工艺—焊接]