HMPT-BOF-RH-CSP process for SPHE substrate of cold rolled deep drawing steel
来源期刊：中南大学学报(英文版)2013年第4期
论文作者：WU Guang-liang(吴光亮) MENG Zheng-bing(孟征兵) ZHOU Chao-yang(周超洋) LIU Xin-bin(刘新彬) HUANG Tao(黄涛)
文章页码：871 - 876
Key words：hot metal pretreatment; basic oxygen furnace; compact strip production; deep drawing; hardening exponent; plastic strain ratio
Abstract: Based on hot metal pretreatment (HMPT)-basic oxygen furnace (BOF)-Rheinstahl heraeus (RH)-compact strip production (CSP) process, parameters controlling on cold rolling deep drawing substrate SPHE were investigated during smelting and rolling process by composition design and technology control. The influence of parameters on chemical compositions, mechanical properties and microstructure was revealed by scanning electron microscope (SEM). The results show that, 1) main chemical components in SPHE are w(C)£40´10-6, w(Si)£ 0.01%, w(S)£0.009%, w(N)£20´10-6, w(O)£ 25´10-6; 2) main mechanical properties of the SPHE are ss=274 MPa, sb=334 MPa, A=48.9%; 3) main performances of deep drawing quality (DDQ) grade steel produced by SPHE are as follows, transversely ss=167 MPa, sb=298 MPa, n=0.219, r=2.46; vertically ss=166 MPa, sb=298 MPa, n=0.226, r=2.39; in 45° direction ss=171 MPa, sb=308 MPa, n=0.214, r=2.26; 4) microstructure of DDQ is ferrite, average grain size is grade 7.5, and inclusion size is 3-10 mm.
WU Guang-liang(吴光亮), MENG Zheng-bing(孟征兵), ZHOU Chao-yang(周超洋), LIU Xin-bin(刘新彬), HUANG Tao(黄涛)
(School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China)
Abstract:Based on hot metal pretreatment (HMPT)-basic oxygen furnace (BOF)-Rheinstahl heraeus (RH)-compact strip production (CSP) process, parameters controlling on cold rolling deep drawing substrate SPHE were investigated during smelting and rolling process by composition design and technology control. The influence of parameters on chemical compositions, mechanical properties and microstructure was revealed by scanning electron microscope (SEM). The results show that, 1) main chemical components in SPHE are w(C)£40´10-6, w(Si)£ 0.01%, w(S)£0.009%, w(N)£20´10-6, w(O)£ 25´10-6; 2) main mechanical properties of the SPHE are ss=274 MPa, sb=334 MPa, A=48.9%; 3) main performances of deep drawing quality (DDQ) grade steel produced by SPHE are as follows, transversely ss=167 MPa, sb=298 MPa, n=0.219, r=2.46; vertically ss=166 MPa, sb=298 MPa, n=0.226, r=2.39; in 45° direction ss=171 MPa, sb=308 MPa, n=0.214, r=2.26; 4) microstructure of DDQ is ferrite, average grain size is grade 7.5, and inclusion size is 3-10 mm.
Key words:hot metal pretreatment; basic oxygen furnace; compact strip production; deep drawing; hardening exponent; plastic strain ratio
