多数的工业工程,其中包括火电厂和核电站在设备安装时,对异种钢焊接接头(特别是珠光体和奥氏体或镍基合金接头)的施焊必须最合理地使用钢材和熔合物(焊条、焊丝)以降低焊接工作劳动量.在大多数情况下出现不应有的可变组织的过渡区(导致脆裂)不取决于异种钢接头采用的焊接工艺(而是在运行过程中发展的).在已知工作参数下从焊缝至母材金属的过渡区,其宽度不论在原始状态还是在运行过程 Most industrial projects, including thermal power plants and nuclear power plants, require the most rational use of steels and welds for the welding of dissimilar steel welded joints (especially pearlite and austenitic or nickel-base alloy joints) at installation , Welding wire) to reduce the amount of welding work, in most cases the occurrence of unneeded transitional zones of variable organization (resulting in brittle fracture) does not depend on the welding process used on the dissimilar steel joints (but rather during operation ) Under the known operating parameters from the weld to the base metal transition zone, its width in either the original state or in the process of running