理化检验-物理分册2026，Vol.62Issue(1)：6-9,4.DOI:10.11973/lhjy-wl240252
高等级焊管用316L不锈钢冷轧板焊缝浮渣缺陷改进方法
Improvement method of weld slag defect of 316L stainless steel cold rolled plate for high grade welded pipe
常天印1
作者信息
- 1. 山西太钢不锈钢股份有限公司制造部,太原 030003
- 折叠
摘要
Abstract
In view of the high quality requirements of stainless steel for high-grade welded pipes in the medical field,the causes of different degrees of slag in the weld of conventionally produced 316L stainless steel cold-rolled plates after welding and its influence on the actual use were analyzed.The comparative welding tests were carried out on 316L stainless steel cold-rolled plates with different S element contents.The results show that the weld slag was mainly formed by the solidification of Al2O3-SiO2-CaO composite inclusions after floating to the surface of the molten pool.Increasing the depth of the molten pool could inhibit the floating of inclusions to the surface to form slag.Increasing the content of the surface active element S that could change the surface tension temperature gradient could make the surface tension temperature gradient of the molten pool positive,thereby forming a deeper and larger weld molten pool.关键词
高等级焊管/焊缝浮渣/夹杂物/熔池/表面张力/温度梯度Key words
high grade welded pipe/weld slag/inclusion/molten pool/surface tension/temperature gradient分类
通用工业技术引用本文复制引用
常天印..高等级焊管用316L不锈钢冷轧板焊缝浮渣缺陷改进方法[J].理化检验-物理分册,2026,62(1):6-9,4.
