前言火电厂热力设备制造、安装和检修过程中时常会遇到异种钢焊接问题,由于不同金属之间的物理性能及热加工性能等差异,增加了金属材料在连接处化学成分、组织及力学性能等方面的不均匀性,以致于影响焊接构件的质量稳定性,特别是对于在高温、高压环境 Preface Thermal power plant thermal power plant manufacturing, installation and maintenance process often encounter dissimilar steel welding problems, due to differences in physical properties and thermal processing properties between different metals, an increase of the metal at the junction of the chemical composition, microstructure and mechanical properties And other aspects of non-uniformity, so that the quality of welded components affect the stability, especially for high temperature, high pressure environment