论文部分内容阅读
前言近十年来,在我国的锅炉容器制造业中,厚板的焊接技术获得了很大的发展。其中最主要的成就是具有高生产率的埋弧焊和电渣焊的实际应用。最近,锅炉和化工容器开始进入高参数的发展阶段,这必然对厚板的焊接技术提出一些新的要求,特别是大量采用各种高强度低合金钢以来,人们普遍发现,埋弧焊和电渣焊等熔焊工艺已不能适应新的生产形势发展的需要。
Foreword In the past ten years, in our country’s boiler container manufacturing industry, the welding technology of thick plate has made great development. One of the most important achievements is the practical application of submerged arc welding and electroslag welding with high productivity. Recently, boilers and chemical containers begin to enter the stage of high parameter development, which inevitably puts forward some new requirements on the welding technology of heavy plates. Especially after extensive use of various high strength and low alloy steels, it has been widely found that submerged arc welding and electricity Welding slag welding process has been unable to adapt to the needs of the development of new production situation.