轧管过程中内鼓包缺陷的案例分析
Case Analysis of the Inner Drum Defect in Steel Rolling Process
李碧琳,金东升
天津冶金职业技术学院;天津钢管集团股份有限公司
- 摘 要
- 针对此次N80 1类139.7 mm×7.72 mm规格套管在PQF连轧生产过程中出现的钢管内鼓包缺陷,利用金相和能谱分析的方法,对缺陷样品的缺陷形貌、显微组织、夹杂物形态等进行分析。结果表明此次管体内鼓包缺陷是由于管坯内部存在大量夹杂物偏聚,致使管体壁厚中间部位产生分层,导致定径过程中在管体分层部位内壁被挤起而形成凸包缺陷。
- 关键词
- 套管;内鼓包;夹杂物
- 分类号
- TG335.7
- 栏 目
- 试验研究
- 出 处
- 《冶金与材料》2017年第2期,第 40-41+44 页(共 3 页)
- 出版日期
- 2017-04-15
- 知网数据
- 下载 79 次,被引 1 次(截至 2026-09-29)
- Abstract
- Aiming at the defects of the N80 1 steel drum package 139. 7 mm × 7. 72 mm casing in PQF rolling production appeared in the process,using the method of optical microscopy and energy spectrum analysis,the sample defect morphology,microstructure and morphology of inclusions were analyzed. The results show that the defects in the tube are due to the large amount of inclusions in the tube,which result in stratification of the middle part of the pipe wall thickness,resulting in the formation of the convex hull in the inner wall of the pipe defect.
- Keywords
- casing; Inner drum bag; inclusions
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