结果表明：钢轨焊接所需顶锻力随顶锻量、顶锻速度的增加而增大，随焊口温度的降低而升高。
The results show that the upset force increases with the increasing of the upset length and upset speed, and increases with the reducing of the heating temperature.
从而成功地实现了对气压焊的焊接压力、气体流量、顶锻位移量等焊接过程参数的控制，并使控制系统具有较快的动态响应速度和较高的控制精度。
So the control of the welding parameter such as welding pressure, gas flux, upsetting length is realized, and the system has a high dynamic response rapid and a high control precision.
闪光推进和顶锻采用凸轮控制，闪光速度平稳对接焊口质量好。
Flash impetus and adopting projection anulus controlling upsetting, steady speed flash and quality of butt welding point is well.
闪光推进和顶锻采用凸轮控制，闪光速度平稳对接焊口质量好。
Flash impetus and adopting projection anulus controlling upsetting, steady speed flash and quality of butt welding point is well.
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