镍基合金690预堆边堆焊和安全端环缝焊接工艺研究

谢彦武; 张立德

中国核电焊接技术 | 浏览量 : 0 下载量: 697 CSCD: 2

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镍基合金690预堆边堆焊和安全端环缝焊接工艺研究
Circumferential welding technique research of nickel-based alloy 690 buttering and safe-end
2019年49卷第4期页码：266-270
纸质出版：2019
DOI：
稿件说明：

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谢彦武, 张立德. 镍基合金690预堆边堆焊和安全端环缝焊接工艺研究[J]. 电焊机, 2019,49(4):266-270. DOI：

XIE Yanwu, ZHANG Lide. Circumferential welding technique research of nickel-based alloy 690 buttering and safe-end[J]. Eletric Welding Machine2019, 49(4): 266-270. DOI：

摘要

针对镍基合金690材料的焊接特性——镍与杂志元素易形成低熔点共晶物而产生热裂纹和晶间失延裂纹

通过大量试验研究

从焊接电流、焊接电压、焊接速度、送丝速度及钨极形式方面进行分析控制

较好地避免了镍基合金690预堆边堆焊和安全端环缝焊接的热裂纹和侧壁的未熔合缺陷。试验工艺参数通过评定得到验证

成功应用于三门2#AP1000蒸发器预堆边堆焊和安全端环峰的焊接。

Abstract

According to the welding characteristics of nickel-based alloy 690

the welding current

welding voltage

welding speed

wire feeding speed and the form of tungsten pole are analyzed and controlled through a large number of experiments. The hot cracks and side wall unfusion defects of nickel-based alloy 690 pre-surfacing and safe end-ring welding are avoided. The test process parameters were validated and successfully applied to the welding of the pre-pile surfacing and the safety end ring of Sanmen 2#AP1000 evaporator.