06Cr18Ni5Mn7Cu3N奥氏体不锈钢带脱皮缺陷的成因分析及预防工艺措施

特殊钢 ›› 2014, Vol. 35 ›› Issue (2): 27-29.

06Cr18Ni5Mn7Cu3N奥氏体不锈钢带脱皮缺陷的成因分析及预防工艺措施

李志栋，韦成贵，杜俊涛

四川金广实业(集团)股份有限公司技术中心，德阳 618300

收稿日期:2013-09-18 出版日期:2014-04-01 发布日期:2022-09-07
作者简介:李志栋(1988-)，男，助理工程师，2009年重庆大学(本科)毕业，轧钢工艺研究。

Analysis on Formation Cause of Peeling Defect of Austenite Stainless Steel 06Cr18Ni5Mn7Cu3N Strip and Preventing Process Measures

Li Zhidong , Wei Chenggui , Du Juntao

Technical Center, Sichuan Jinguang Industrial (Group) Co Ltd, Deyang 618300

Received:2013-09-18 Published:2014-04-01 Online:2022-09-07

摘要/Abstract

摘要： 2.5 mm热轧06Cr18Ni5Mn7Cu3N奥氏体不锈钢带的生产流程为70 t EAF-70 t底吹GOR转炉-LF-180 mm ×1240 mm板坯CC-热轧工艺。酸洗后2.5 mm热轧带距边部约30 mm处出现宽度≤20 mm,深≤0.06 mm的脱皮缺陷。分析表明,由于在热轧加热过程中加热温度过高(1200~1260℃),以及加热时间过长(超过210 min)使得富铜相在晶界处大量析出致使在热轧过程形成脱皮缺陷。通过将加热温度调整为1200~1240℃,加热时间为150~210 min后,产生脱皮缺陷的带材由7%降至0.5%以下,产品质量得到了显著的提升。

关键词: 奥氏体不锈钢06Cr18Ni5Mn7Cu3N, 带材, 脱皮缺陷, 加热温度, 加热时间

Abstract: The production flow sheet for 2. 5 mm hot rolled strip of austenite stainless steel 06Cr18Ni5Mn7Cu3N is 70 t EAF-70 t bottom-blown GOR converter-LF-180 mm x 1240 mm slab CC-hot rolling process. The peeling defects with width ≤ 20 mm and depth ≤ 0.06 mm occur at distance about 30 mm from edge of pickled 2.5 mm hot-rolled strip. Analysis show that due to higher heating temperature during heating process for hot rolling (1200-1260 ℃) and longer holding time during heating ( more than 210 min) led to the formation of a large amount of copper-rich phase precipitated at grain boundary, as a result the peeling defect forms during hot rolling. With improving healing temperature 1200-1240 ℃ and holding time 150-210 min, the forming strip peeling defect ratio decreases from original 7% to less than 0.5% , the quality of products enhances markedly.

Key words: Austenite Stainless Steel 06Cr18Ni5Mn7Cu3N, Strip, Peeling Defect, Heating Temperature, Heating Time

李志栋, 韦成贵, 杜俊涛. 06Cr18Ni5Mn7Cu3N奥氏体不锈钢带脱皮缺陷的成因分析及预防工艺措施[J]. 特殊钢, 2014, 35(2): 27-29.

Li Zhidong , Wei Chenggui , Du Juntao. Analysis on Formation Cause of Peeling Defect of Austenite Stainless Steel 06Cr18Ni5Mn7Cu3N Strip and Preventing Process Measures[J]. Special Steel, 2014, 35(2): 27-29.

[1]	刘军凯, 于一鹏, 张敬霖, 张建生, 张建福. 变形量和加热温度对2205双相不锈钢冲击韧性的影响[J]. 特殊钢, 2024, 45(6): 69-72.
[2]	周云, 杨晓伟, 陈焕德, 张宇. 铌含量及铸锭加热温度对HRB400螺纹钢组织性能的影响[J]. 特殊钢, 2021, 42(1): 66-70.
[3]	杨伟勇. 400 MPa级铌微合金化抗震钢的控轧控冷工艺实践[J]. 特殊钢, 2020, 41(6): 55-59.
[4]	吕学飞, 焦其慧. 镜面塑料模具钢P80R热轧扁材表面裂纹分析和工艺改进[J]. 特殊钢, 2017, 38(4): 20-22.
[5]	张春林, 王新鹏, 宁天信, 陈帅超, 罗利阳. UNS N06625合金热成形工艺的模拟试验和分析[J]. 特殊钢, 2017, 38(2): 1-5.
[6]	李龙, 张小军, 曾祥勇, 陈鑫, 高闯, 周德敬. 钎焊式空冷系统用嵌入式冷轧铝-钢复合带材的开发[J]. 特殊钢, 2015, 36(1): 34-37.