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在气轮机的制造中,珠光体耐热钢的焊接是比较多的,多年来我们一直采用手工电弧焊和少量的埋弧自动焊,每焊一层得清理一层焊渣,因耐热钢是易淬硬性的,焊前均需予热,所以焊工的劳动强度大,劳动条件差,生产效率低。电焊师傅很想改变这种生产上的落后状况。近年来,CO_2保护焊在我国工业生产上有很大的应用和发展,但主要还是应用Ho_8Mn_2SiA
In the manufacture of gas turbines, pearlite heat-resistant steel welding is more, and for many years we have been using manual arc welding and a small amount of submerged arc welding, a layer of welding slag to be cleaned, because heat-resistant steel Is easy hardenability, are required to heat before welding, so the labor intensity of welders, poor working conditions, low productivity. The electrician wants to change the backwardness in production. In recent years, CO_2 shielded welding in China’s industrial production has great application and development, but mainly the application of Ho_8Mn_2SiA