钢坯枝晶腐蚀低倍检验技术的试样制备方法

doi:10.13228/j.boyuan.issn1005-4006.20220161

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (2339 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract As a novel macro-examination method, dendrite corrosion macro-examination demands higher requirements for the surface roughness and the preparation efficiency of steel billet specimens. The specimens were ground by an abrasive belt machine. The operation duration and the variation of surface roughness were investigated to determinate the optimum process for preparing steel billet specimens by abrasive belt grinding. The results show that for the specimens with a bumpy surface, the abrasive belt with mesh number 24 (700 μm) can be used to quickly remove the oxide layer and obtain a smooth and flat surface, which reaches the same effect as that by the milling machine. The abrasive belt with mesh number 120 (120 μm) can be used as the initial one to fine grind the flat surface. The grinding directions of the two successive abrasive belts remains vertical. With the mesh number increasing, the surface roughness gradually decreases. After completing grinding with the mesh number 2 000 (6.5 μm), both the horizontal and vertical surface roughness can reach less than 0.1 μm, which meets the requirements of the dendrite corrosion macro-examination. During the fine grinding, it is requisite to grind the specimens for a longer time when using the initial mesh number or the mesh number higher than 600 (23 μm), to ensure the fine grinding effect on the specimen surface. Thus, by abrasive belt grinding, the specimen preparation for the dendrite corrosion macro-examination can be efficiently completed.

Key words： dendrite corrosion macro-examination continuous casting abrasive belt grinding surface roughness solidification structure

Received: 10 October 2022

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WU Chunlei
	SHI Chunyang
	SUN Ye
	LIU Yan
	ZHU Yueyang

Cite this article:

WU Chunlei,SHI Chunyang,SUN Ye等. Specimen preparation method of steel billet for dendrite corrosion macro-examination[J]. CONTINUOUS CASTING, 2023, 42(4): 29-33.

URL:

http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220161 OR http://www.chinamet.cn/Jweb_lz/EN/Y2023/V42/I4/29

[1]	柯磊, 高仲, 韩传基, 等. 连铸坯质量预测系统及应用[J].冶金自动化,2012,36(1):1.
[2]	郭贤利, 彭世恒, 仇圣桃. 基于神经网络的连铸板坯质量在线诊断系统[J].冶金自动化,2013,37(3):16.
[3]	郭戈, 王伟, 柴天佑. 连铸过程自动化技术综述[J].冶金自动化,2002,26(2):10.
[4]	李吉东, 任永秀. 铁素体钢中白点缺陷的检验分析[J].钢铁,2017,52(12):86.
[5]	吴春雷, 刘晓明, 李德伟, 等. 电磁旋流水口连铸技术研究进展[J].连铸,2022(4):8.
[6]	李辉成, 杨谱, 刘海宁, 等. PMO-EMS组合调控提高铸坯均质化应用实践[J].连铸,2022(4):66.
[7]	王兴宇, 韩延申, 刘青, 等. 末端电磁搅拌对弹簧钢连铸坯内部质量的影响[J].钢铁,2020,55(5):59.
[8]	吴春雷, 王一诺, 杨撷光, 等. 82B钢丝笔尖状断口缺陷的成因分析与对策研究[J].连铸,2018(4):51.
[9]	兰鹏, 铁占鹏, 张伟, 等. 连铸坯点状偏析缺陷研究进展[J].钢铁,2020,55(2):11.
[10]	许庆太, 王文仲, 朴志民, 等. 枝晶检验方法在连铸生产中的应用[J].鞍钢技术,2017(5):28.
[11]	张秀荷, 代绪成, 刘宏, 等. 电解腐蚀技术在耐蚀合金焊接接头低倍金相制样中的应用[J].焊管,2019,42(11):41.
[12]	彭勃, 李春阳. 全自动电解腐蚀技术在连铸坯低倍检验中的应用[J].理化检验-物理分册,2015,51(12):858.
[13]	许庆太, 李吉东, 孙中强. 枝晶腐蚀低倍检验在连铸生产中的应用[J].物理测试,2011,29(6):22.
[14]	邹雷雷, 黄俊雄, 李权辉, 等. 连铸坯裂纹与偏析预测研究进展[J].连铸,2022(2):2.
[15]	何志明, 范立强, 彭勃, 等. 连铸板坯低倍组织检验的三种方法对比试验[J].世界钢铁,2014,14(6):15.
[16]	何志明, 张斌. 枝晶腐蚀低倍检验技术在连铸生产质量控制中的应用[J].宝钢技术,2014(6):25.
[17]	郭长升, 周立民, 刘国栋, 等. 大型钢坯低倍试样加工与缺陷检测的新装备、新技术[J].连铸,2016(2):43.
[18]	马飞跃. 连铸坯全自动低倍检验工艺设计及试验室建设[J].理化检验-物理分册,2022,58(4):4.
[19]	马飞跃. 连铸坯低倍检验工艺发展现状及展望[J].连铸,2022(1):9.
[20]	王克杰, 王洪亮, 黄港明, 等. 洁净钢检测新技术——钢坯镜面加工及全端面检测[J].理化检验-物理分册,2015,51(12):839.
[21]	杨撷光, 许庆太, 马宁. 枝晶腐蚀低倍检验技术在连铸生产中的应用[J].连铸,2020(3):22.
[22]	吴春雷, 李德伟, 朱晓伟, 等. 电磁旋流水口连铸技术对小方坯凝固组织形貌和宏观偏析的影响[J].金属学报,2019,55(7):875.