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.
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。
3
In the thermal analysis, the initial temperature of billet, beat fluxes (heatflow per unit area) of positive and negative value and convections to surrounding air are considered.