Research on Soft Reduction Amount Distribution to Eliminate Typical Inter-dendritic Crack in Continuous Casting Slab of X70 Pipeline Steel by Numerical Model

被引：8

作者：

Liu, Ke ^{[1
]}

Wang, Chang ^{[1
]}

Liu, Guo-liang ^{[1
]}

Ding, Ning ^{[1
]}

Sun, Qi-song ^{[1
]}

Tian, Zhi-hong ^{[1
]}

机构：

[1] Shougang Res Inst Technol, Beijing 100043, Peoples R China

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2017年 / 36卷 / 04期

关键词：

continuous casting slab; inter-dendritic crack; X70 pipeline steel; soft reduction amount distribution; numerical model; SOLIDIFICATION CRACKING; CENTERLINE SEGREGATION; STRAND DEFORMATION; HIGH-TEMPERATURE; LIQUID-CORE; CARBON; PRINCIPLES; BLOOM; MELT;

D O I：

10.1515/htmp-2016-0160

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To investigate the formation of one kind of typical inter-dendritic crack around triple point region in continuous casting(CC) slab during the operation of soft reduction, fully coupled 3D thermo-mechanical finite element models was developed, also plant trials were carried out in a domestic continuous casting machine. Three possible types of soft reduction amount distribution (SRAD) in the soft reduction region were analyzed. The relationship between the typical inter-dendritic cracks and soft reduction conditions is presented and demonstrated in production practice. Considering the critical strain of internal crack formation, a critical tolerance for the soft reduction amount distribution and related casing parameters have been proposed for better contribution of soft reduction to the internal quality of slabs. The typical inter-dendritic crack around the triple point region had been eliminated effectively through the application of proposed suggestions for continuous casting of X70 pipeline steel in industrial practice.

引用

页码：359 / 372

页数：14