针对晶体生长炉304L超低碳奥氏体不锈钢角焊缝的全焊透问题,运用小电流、直线运条、快速焊的小规范TIG焊,把握合理焊枪后倾角及其在角接接头中的角度分配,严格控制焊缝温度及其在敏感温度区间的停留时间,降低了焊缝晶间腐蚀和热裂纹倾向,取得了良好的焊接效果。 Aiming at the problem of full penetration of fillet welds of 304L ultra-low carbon austenitic stainless steel in crystal growth furnace, a small gauge TIG welding with small current, Angle distribution, strict control of the weld temperature and its residence time in the sensitive temperature range, reducing the intergranular corrosion and hot cracking tendency, and achieved good welding results.