摘要
稀释率的大小影响着堆焊层的组织与性能,它是评价堆焊层质量的重要参数,通过采用不同试板倾角(倾斜)堆焊时,铁素体含量的明显变化及PWHT后铁素体含量有明显增高的现象,研究了焊带位置与稀释率的关系及对堆焊工艺的影响。得出堆焊时试件倾斜角度是造成稀释率大的主要原因、稀释率变化导致铁素体含量发生变化的结论。
The dilution rate affects the structure and performance of the overlay,and it is an important parameter for evaluating the quality of the overlay.In this paper,through the obvious change in ferrite content when using different tilting angle of test plate for overlaying and the phenomenon of substantial increase in ferrite content after PWHT,the relationship between the position of welding strip and dilution rate and the effect on the overlaying process were studied.It is concluded that the tilting angle of the test specimen is the main cause for high dilution rate,and the variation in dilution rate leads to variation in ferrite content.
作者
吴瑞萍
唐波涛
王天先
王毅
Wu Ruiping;Tang Botao;Wang Tianxian;Wang Yi(Qingdao Lanshi Heavy Machinery Equipment Co.,Ltd.,Qingdao 266426,China;Bombardier Sifang(Qingdao)Transportation Ltd.,Qingdao 266111,China)
出处
《压力容器》
北大核心
2020年第1期74-78,共5页
Pressure Vessel Technology
关键词
带极堆焊
焊带位置
铁素体
稀释率
不锈钢
strip electrode overlaying
welding strip position
ferrite
dilution rate
stainless steel
