To improve the surface quality of flexible formation using plasma arc, its heat-flow density on unit area is controlled by controlling the swinging of the plasma arc with the alternate magnetic field.
为进一步提高等离子体弧柔性成形的表面质量，利用磁场控制弧柱的摆动状态进而控制单位面积上等离子体弧的热流密度，使之达到预期目的。
The total heat loss per unit time decreases gradually as the injection pressure, injection flow rate and injection time increase, but the decrease extent reduces gradually.
随着注入压力、注入流量以及注入时长的增加单位时间的总热损逐渐减小，但是降低幅度变缓。
In the thermal analysis, the initial temperature of billet, beat fluxes (heat flow per unit area) of positive and negative value and convections to surrounding air are considered.
热分析中考虑了坯料的初始温度、外加热源和冷却源的热流密度以及坯料和空气的对流传热。
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