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本文较详细地分析了Ｘ２０ＣｒＭｏＶ１２１（ＶＸＴ简称Ｆ１２钢）马氏体耐热钢的焊接性及影响Ｆ１２钢焊接质量的诸因素，探讨并提出了合理制定Ｆ１２钢焊接及焊后热处理工艺参数的依据，为Ｆ１２钢焊接提供了具体的施工措施。
In this paper, the weldability of X20CrMoV121 (VXT F12 steel) martensitic heat-resistant steel and the factors affecting the welding quality of F12 steel are analyzed in detail, and the basis for establishing reasonable welding parameters and welding heat treatment parameters of F12 steel is discussed and put forward. F12 steel welding provides a concrete construction measures.