在此基础上，对小孔等离子弧焊接热场进行了有限元计算，分析了引弧后熔池及周围温度场的瞬时演变过程。
Based on TPAW, finite element calculation of temperature field in keyhole plasma arc welding is conducted, and.
在穿孔等离子弧焊接过程中，小孔稳定性对焊接过程的稳定和优质的焊缝成形是非常关键的。
Keyhole stability during plasma arc welding welding process is critical to the process stability and weld quality.
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