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本文介绍了高压大流量等压式气体配比器的原理及技术数据。对采用氮氢混合气代替氩气作为焊缝背面保护气的可行性进行了试验,证明该工艺是行之有效的,并可收到显著的经济效益。
This paper introduces the principle and technical data of high pressure and large flow isobaric gas proportioner. The feasibility of using nitrogen-hydrogen mixed gas instead of argon as the protective gas on the back of the weld was tested, which proves that the process is effective and can receive significant economic benefits.