焊件中的温度场分布反映了复杂的焊接热过程，是研究焊接变形、焊后残余应力等状况的基础。
Temperature field distribution of weldment, which reflects complex welding heat process, is a basic on studying welding deformation, residual stress and so on.
采用模块化结构设计，编写了一套适合于模拟运动电弧作用下三维瞬态tig焊接热过程的计算程序。
With modular form of the software structure, the calculating problem is designed to simulate the 3-d transient TIG welding thermal process with a moving arc.
将熔化极气体保护焊（GMAW）的热输入处理为三维移动串热源，建立了串热源模型，模拟了JG590低合金钢的GMAW焊接热过程。
The GMAW welding thermal process for low alloy steel JG590 was analyzed based on the established heat source model.
焊接过程对被焊工件来说，是局部的不均匀加热过程和不均匀冷却过程。
The welding process of the welding workpieces, uneven heating process is partial and uneven cooling process.
但焊接成形是一个局部高温加热过程，温度场的分布影响焊接零件质量和性能。
But welding is a processing of local high temperature, the distribution of temperature field will affect the quality and performance of welding part.
激光深熔焊接的传热过程包括热传导和焊接熔池内熔融材料的对流流动。
The heat transfer in laser deep penetration welding includes heat conduction and convection in the welding pool.
该类管件制造工艺过程简单，管件加热过程易于控制，具有较长的使用寿命，焊接质量好。
The pipe fitting has the advantages of simple manufacturing process, easy control of the heating process of the pipe fitting, longer service life and good welding quality.
该类管件制造工艺过程简单，管件加热过程易于控制，具有较长的使用寿命，焊接质量好。
The pipe fitting has the advantages of simple manufacturing process, easy control of the heating process of the pipe fitting, longer service life and good welding quality.
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