409L铁素体不锈钢精轧夹送辊刮伤缺陷分析
Analysis of Scratch Defect of 409L Ferritic Stainless Steel Finishing Rolling Pinch Roll
祝建伟 1钱张信1
作者信息
- 1. 酒泉钢铁(集团)有限责任公司,甘肃 嘉峪关 735100
- 折叠
摘要
利用扫描电镜和能谱分析了 409L热轧刮伤缺陷的形貌和成分,缺陷处存在有氧化皮的残留.结合缺陷发生特点和过程工艺分析明确了缺陷产生的机理,C、N含量的降低导致 409L高温强度偏低.在现行工艺条件下409L精轧上夹送辊对带钢的压力大于其屈服强度,更易产生黏辊造成刮伤类缺陷.
Abstract
The morphology and composition of 409L hot rolling scratch defects were analyzed by SEM and EDS.Combined with the defect occurrence characteristics and process analysis,the mechanism of defect generation was defined,the reduc-tion of C and N content led to the low temperature strength of 409L.Under the current process conditions,the pressure of the pinch roll on the strip steel in 409L finishing rolling was greater than its yield strength,which was more likely to pro-duce scratches caused by sticky roll.
关键词
409L不锈钢/精轧/夹送辊/刮伤Key words
409L stainless steel/finishing rolling/pinch roll/scratch引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据