22 mm 厚Q235B钢板表面裂纹成因
Formation Reason for Surface Cracks of Q235B Steel Plate with Thickness of 22 mm
摘 要
某批规格为22 mm 厚的Q235B钢板在表面质量检验过程中发现部分钢板表面存在纵向裂纹缺陷。采用光学显微镜和扫描电镜等手段对钢板表面裂纹的形成原因进行了分析。结果表明：该批钢板表面裂纹主要是由于其原始连铸板坯表面存在较深的裂纹缺陷，在后期轧制过程中被压扁、延伸,未轧合所致。
表面缺陷
裂纹
轧制
Q235B steel plate
surface defect
crack
rolling
Abstract
Longitudinal cracks were found on the surface of some set of Q235 B steel plate with thickness of 22 mm during the quality inspection process. The cracks formation reason was analyzed by using metallographic microscope and scanning electronic microscope. The results show that there were origin deep surface crack defects on the continuous cast slab which were flattened and extended during the rolling process. When the origin surface cracks was so deep that they could not be seamed together, the longitudinal surface cracks on the rolled steel plate formed.
中图分类号 TG115.21
所属栏目 质量控制与失效分析
基金项目
收稿日期 2009/9/21
修改稿日期
网络出版日期
作者单位点击查看
备注钱健清(1963-),男,教授，硕士。
引用该论文: QIAN Jian-qing,ZOU Qiang,LUO Xiu-mei,WANG Zhong-kun2. Formation Reason for Surface Cracks of Q235B Steel Plate with Thickness of 22 mm[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2010, 46(6): 400～402
钱健清,邹 强,罗秀梅,王仲琨. 22 mm 厚Q235B钢板表面裂纹成因[J]. 理化检验－物理分册, 2010, 46(6): 400～402
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】王红梅,张艳. 50钢板裂纹分析[J]. 物理测试, 2003(4): 33-35．
【2】刘毅. 金属学与热处理[M]. 北京:冶金出版社,1995．
【3】F 布赖恩,皮克林. 钢的组织与性能[M]. 北京:科学出版社,1999．
【2】刘毅. 金属学与热处理[M]. 北京:冶金出版社,1995．
【3】F 布赖恩,皮克林. 钢的组织与性能[M]. 北京:科学出版社,1999．
相关信息
