【摘要】 在LF6铝合金交流脉冲TIG焊过程中,焊接工艺参数(I_m、I_j、f_m、M_k、Q_Ar)对焊缝正、背面成形的影响进行了试验。结果证明,脉冲焊的去氧化膜、抗气孔能力及接头机械性能均优于连续焊。该工艺已用于生产。更多还原

【Abstract】 The experimental study has been carried out for the effect of procedure variables (I_m, I_f, f_m, M_k, Q_ar) on bead forming on both sides of LF6 aluminium alloy weld with AC pulse TIG welding process. The results show that the pulse current arc possesses many advantages such as cleaning effect of pool surface, the ability to get rid of porosity and good enough mechanical properties as compared with conventional TIG process. It has already been used in production.更多还原