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.
通过对腐蚀形貌和环境进行分析，确认罐顶焊接质量差和雨水渗入是造成腐蚀的主要原因。
The analysis of the corrosion form and environment confirms that the main cause of the corrosion is the poor welding quality and water permeation.
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