Formation Analysis of Edge Cracks of 33MnCrTiB Fork Steel

Metals

Shuo Zhao¹  Yangyang Ge¹  Jingcai Lyu¹  Tao Yan¹  Liang Ma¹  Zushu Li² 

[1] Department of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, China;Warwick Manufacturing Group, University of Warwick, Coventry CV4 7AL, UK;

关键词: 33MnCrTiB;    edge cracks;    inclusions;    mold flux;    porosity;   

DOI  :  10.3390/met8080587

来源: DOAJ

【 摘 要 】

A 33MnCrTiB is a high-strength low alloy steel used for a forklift truck. This study investigates the root causes of the edge cracks in 33MnCrTiB steel produced by a steel manufacturer. After sampling, inspecting and analyzing the 33MnCrTiB flat steel with edge cracks taken from the plant, it was found that the crack and porosity contain similar residues to the deoxidation products and continuous casting mold flux. It can be concluded that the edge surface cracking in the flat steel are mainly caused by the non-deformable inclusions in steel, slag sticking and surface cracks on the original billet. At the same time, the further expansion of cracks is closely related to the serious decarburization during the heating treatment in the billet heating process, and the improper rolling deformation system during the rolling process.

【 授权许可】

Unknown