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在西屋公司原焊接工艺的基础上，采用100％Ar保护脉冲TiG焊对EB嵌条坡口封底的新工艺，攻克了大厚壁管对接焊、大厚管焊后热处理等工艺难点。该焊接工艺能够满足产品设计要求，降低成本，提高经济效益。
On the basis of the original welding process of Westinghouse, the new technology of 100% Ar protection pulse TiG welding on the backside of the EB fillet groove is adopted to overcome the difficulties of the butt welding of the large thick-walled tube and the post-weld heat treatment of the large thick tube. The welding process to meet product design requirements, reduce costs and improve economic efficiency.