摘要
从母材焊接特性、H元素对裂纹的影响、焊接工艺及堆焊层残余应力等方面详细阐述AP1000蒸汽发生器管板堆焊过程中裂纹产生的原因,从锻件采购、焊接控制以及堆焊工艺等方面对AP1000管板堆焊工艺提出切实可行的改进方案。
This paper discusses the causes of AP1000 Steam Generator （SG） tube sheet underclad cracking. Base metal weldability, hydrogen influence, welding techniques and weld residue stresses are all discussed in details in contributing to the underclad cracking problems. Feasible and realistic improvement plans are proposed for the AP1000 SG tube sheet cladding, including the controlling forging procurement, welding process and cladding techniques.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2012年第5期120-123,共4页
Nuclear Power Engineering
关键词
蒸汽发生器
管板
堆焊
裂纹
预热
后热
Steam Generator, Tube sheet, Cladding, Cold Crack, Pre-heating, Post-heating
