摘要
针对我国引进的三代核电技术AP1000中主要核岛部件非能动余热排出热交换器(PRHR HX)的制造,介绍了PRHR HX的技术参数、结构特征、材料特点和所依据的规范技术条件。介绍了管板双面堆焊、封头不锈钢带极堆焊、接管-安全端异种金属镍基合金焊接、换热管-管板密封焊和不锈钢框架焊接等主要焊接技术难点和对应的焊接工艺。
For PRHR HX, a main equipment in AP1000 nuclear island system, technical parame- ters, material character, codes complied with are given, main difficulties such as two sides cladding of tubesheet, stainless steel strip SAW cladding on channel head, nozzle - safe end nickel 690 welding, tube -tubesheet welding, and stainless steel frame welding are stated.
出处
《锅炉制造》
2015年第6期39-42,46,共5页
Boiler Manufacturing
