LD10铝合金变极性TIG焊试验  

TEST AND RESEARCH OF POLARITY - VARIABLE TIG WELDING FOR LD10 ALUMINUM ALLOY

作　　者：谢美蓉[1] 

机构地区：[1]首都航天机械公司工艺研究所,100076

出　　处：《焊接》2005年第10期40-43,共4页Welding & Joining

摘　　要：对变极性电源在LD10铝合金TIG焊中工艺特点进行了研究,探讨了影响气孔、阴极清理作用、钨极端 头烧损的各种因素及其作用规律。研究表明变极性电源由于可调规范参数多、变化范围大、通过控制电源的输出 电流波形,增大钨极为正半波的电流幅值,减少其时间,可满足阴极清理的基本要求,减少钨极烧损和气孔,灵活地 控制焊缝成形,从而获得良好的焊接结果。The welding technical characteristics of polarity - variable TIG welding power source used for LD10 aluminum welding were researched. The paper discussed various factors which influence air hole, cleaning action of the cathode, tungsten electrode ablating. The result shows that polarity - variable TIG welding power has multiform adjusting parameters with wide variation area. Therefore, the basic requirement of cathode cleaning is satisfied, tungsten electrode ablating and air hole are reduced, and appearance of weld is controlled by controlling current curve of welding power, increasing current value of DCEP and decreasing durative time.

关 键 词：TIG焊 变极性 钨极烧损 焊缝成形 变极性TIG焊 铝合金 变极性电源 试验 电流波形 控制电源 

分 类 号：TG434.1[金属学及工艺—焊接] TG146.21[一般工业技术—材料科学与工程]