The flame normalizing treatments were put forward on steel rail with flash welding, gas pressure welding and aluminium heat welding.
对钢轨闪光焊、气压焊和铝热焊进行火焰正火处理，并进行正火、未正火接头和钢轨母材的金相组织以及力学性能的对比。
This article introduce the application of mobile rail gas pressure welding technology in the track maintenance of Shanghai Metro, and bring forward this technology is applicable and worthy to spread.
本文介绍了移动式钢轨气压焊接技术在上海地铁轨道维修中的应用，表明移动式钢轨气压焊接技术适合地铁维修施工，值得推广运用。
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.
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。
GA-1 reducer is used in quantitative output reducer for gas shielded welding and gas explosimeter. It has performance of pressure - reducing and gas flow control.
型减压器是用于气体保护焊与气体测爆仪的定输出减压器，具有减压、控制气体流量的性能。
When objects require spray coating or spray welding, the user can close the high-pressure oxygen gas valve and open the powder feeding valve (4), so the hot spray device can work.
当需要喷涂或喷焊时，关闭高压氧阀，打开送粉阀(4)，热喷涂装置即可工作。
When objects require spray coating or spray welding, the user can close the high-pressure oxygen gas valve and open the powder feeding valve (4), so the hot spray device can work.
当需要喷涂或喷焊时，关闭高压氧阀，打开送粉阀(4)，热喷涂装置即可工作。
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