|
|
|
| Analysis of bending cracking of Q235B steel plate and control measures |
| GUO Wenjing |
| Baosteel Desheng Stainless Steel Co., Ltd., Fuzhou 350600, China |
|
|
|
|
Abstract The problem of serious cracking was observed during bending test of Q235B hot-rolled coil produced by one factory. The cracking position and non-cracking position of steel plate were compared and analyzed by means of optical microscope, scanning electron microscope and energy disperse spectroscopy. The results showed that there were obvious inclusions in the material, which could induce the formation of cracks. Moreover, the content of manganese sulfide inclusions in the material was high. After adjusting the production process and controlling the content of manganese sulfide inclusions, the problem of bending cracking could be significantly improved. The recurrence of this problem was avoided.
|
|
Received: 13 June 2023
|
|
|
|
| [1] |
孙宇红. Q235B热轧卷冷弯开裂原因分析[J]. 浙江冶金,2020,8(2):37.
|
| [2] |
胡真明. Q235B板冷弯裂纹成因分析及工艺控制[J]. 中国钢铁业,2008(11):29.
|
| [3] |
凌鑫,朱萍,李博鹏,等. Ti元素对碳素结构钢淬透性的影响[J]. 物理测试,2023,41(1):12.
|
| [4] |
严毕玉,马华富. Q355B钢板冷弯开裂原因分析及其改进措施[J]. 福建冶金, 2020(2):32.
|
| [5] |
付长亮. Q355B钢板折弯开裂原因分析及改进[J]. 天津冶金, 2019(2):39.
|
| [6] |
李炳一. Q235B钢板冷弯性能和断后伸长率不合格原因分析[J]. 天津冶金,2017(增刊1):38.
|
| [7] |
熊立斌,孟若愚,区炳显. 立式换热器不锈钢换热管开裂原因分析[J]. 物理测试,2023,41(2):38.
|
| [8] |
邱涛. 汽车大梁用钢板冲压开裂分析[J]. 上海金属,2019,41(3):39.
|
| [9] |
李丰德. 35CrMoA圆钢热顶锻开裂原因分析[J]. 物理测试,2023, 41(3):28.
|
| [1] |
ZHAO Yang, QI Wenlong, ZHANG Tao, WANG Fuhui. Micro-alloying design of HP-13Cr-Cu stainless steel with high temperature and high H2S partial pressure resistance[J]. Iron and Steel, 2023, 58(9): 194-208. |
| [2] |
KUANG Lanxiang, LIU Dong, YAO Zhonghai, DU Liying. Failure analysis of longitudinal cracking of 900 MPa seamless steel pipe[J]. PHYSICS EXAMINATION AND TESTING, 2023, 41(6): 43-49. |
| [3] |
WANG Fei, YANG Chao, ZHANG Lidai, SHI Renqiang. Analysis on cracking of dissimilar material welded joint of main steam pressure sampling tube[J]. PHYSICS EXAMINATION AND TESTING, 2023, 41(6): 50-55. |
| [4] |
LIU Guijiang, TENG Zhengde, SHAN Mingyan, YANG Yongfeng, LU Wei, WANG Junmin. Cracking analysis of 42CrMoA roller shaft end[J]. PHYSICS EXAMINATION AND TESTING, 2023, 41(4): 24-26. |
| [5] |
WANG Zhijun, QI Jiangtao. Cracking failure analysis of low-chromium ultrapure ferritic stainless steel for flange[J]. PHYSICS EXAMINATION AND TESTING, 2023, 41(4): 49-52. |
| [6] |
XIONG Libin, MENG Ruoyu, OU Bingxian. Cracking analysis of stainless-steel tube in vertical heat exchanger[J]. PHYSICS EXAMINATION AND TESTING, 2023, 41(2): 38-42. |
|
|
|
|
2024, Vol. 42 
