Regarding to submerged arc weld multi-pass weld track and height of weld gun, two-dimension track system is designed.
针对埋弧焊多道焊的焊缝跟踪以及焊枪高度跟踪问题，设计了一种二维跟踪系统。
The change of material property depending on temperature was considered in computation. The element birth technique was adopted to simulate multi-pass weld.
计算中考虑材料物理性能随温度的变化，并运用单元激活技术模拟多道焊焊接过程。
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