Formation Factors of Strip Surface Bright Spot Defect of 304 Austenite Stainless Steel and Preventing Process Measures

韦成贵; 李志栋

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Formation Factors of Strip Surface Bright Spot Defect of 304 Austenite Stainless Steel and Preventing Process Measures

更新时间：2026-01-21

- Formation Factors of Strip Surface Bright Spot Defect of 304 Austenite Stainless Steel and Preventing Process Measures
- Special Steel Vol. 35, Issue 3, Pages: 24-26(2014)
- 作者机构：
  
  四川金广实业(集团)股份有限公司技术中心,德阳,618300
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 December 2013，
  
  Online First：29 August 2022，
  
  Published：29 August 2014
- 稿件说明：
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韦成贵, 李志栋. Formation Factors of Strip Surface Bright Spot Defect of 304 Austenite Stainless Steel and Preventing Process Measures[J]. Special Steel, 2014, 35(3): 24-26.
DOI：

韦成贵, 李志栋. Formation Factors of Strip Surface Bright Spot Defect of 304 Austenite Stainless Steel and Preventing Process Measures[J]. Special Steel, 2014, 35(3): 24-26. DOI：

摘要

2.5~8.0 mm 304奥氏体不锈钢(/%: ≤0.08C

18.00~20.00Cr

8.00~10.50Ni)热轧材的生产工艺为70 t电弧炉-70 t底吹GOR转炉-LF-板坯连铸-热连轧-固溶处理-酸洗。通过对热轧带材酸洗后表面亮斑的粗糙度、夹杂物、组织的分析和检验以及现场层流冷却水质对带材亮斑形成影响的试验

确定层流冷却水的油污及悬浮物沉积在钢带表面经固溶处理和酸洗后形成表面亮斑缺陷。通过严格控制层流冷却水的质量

加强层流冷却相关设备检修过程的管理

保证层流冷却水油度低于0.5 mg/L

悬浮物低于7 mg/L

有效地避免304不锈钢带亮斑缺陷的产生

显著提升产品的质量。

Abstract

The production process for 2

5 ~8. 0 mm strip of 304 austenite stainless steel (/%: ≤0. 08C

18. 00 ~ 20.00Cr

8. 00 ~ 10.50Ni) is 70 t EAF-70 t bottom blowing GOR converter-LF-slab casting-hot continuous rolling-solid solution treatment-pickling. Based on analysis and examination on bright spots of hot rolled and pickling strip including roughness

inclusions and structure

and test of effect of laminar cooling water quality in situ on strip bright spots formation

it is defined that the contaminated oil and suspending particles in laminar flow cooling water deposit on surface of strip

after solid-solution treatment and pickling the bright spots form on surface of strip. With strict controlling the laminar cooling water quality and strengthening the management of relative laminar flow cooling equipment during facility maintenance

as oil contamination of cooling water is less than 0.5 mg/L and suspending particles is less than 7 mg/L

it is available to avoid the formation of bright spot defect of 304 stainless steel strip and obviously enhance the quality of products.

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