Publication number: 20230203630
Abstract: The invention relates to a wear-resistant steel with excellent surface quality, which is composed of C: 0.12-0.20%, Si: ?0.1%, Mn: 0.6-1.20%, Nb: 0.010-0.040%, V: ?0.01%, Ti: 0.010%-0.030, Al: ?0.04%, Ni: ?0.1%, Cu: ?0.1%, Cr: 0.10-0.40%, Mo: ?0.1%, B: 0.001-0.005%, Ca: 0.0010-0.0050%, P: ?0.010%, S: ?0.0015%, O: ?0.0012%, N: ?0.0035%, H: ?0.0002%, the balance is Fe, and the carbon equivalent CEV?0.4; PCM?0.25. The production process flow is: converter smelting->LF refining->VD or Rh high vacuum degassing->continuous casting->heating->rolling->shot blasting->quenching->tempering. The wear-resistant steel of the invention has better surface quality, and there are no surface defects such as air pit, inclusion, hemp pit and pressed iron oxide scale. The depth of surface spots caused by the peeling off iron oxide scale is ?0.1 mm, and the surface grinding of steel plate cannot be carried out. Based on element design, non-preheating welding and excellent toughness can be further realized.
Type:
Application
Filed:
April 9, 2020
Publication date:
June 29, 2023
Applicant:
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO., LTD
Inventors:
Jun LIU, Guozhong LI, Yang YANG, Xiaohong XU, Jinming WU, Pifeng MIAO, Guoqing XU, Xiaoshuang WANG