(1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,Qinhuangdao 066004, Hebei, China 2. China National Heavy Machinery Research Institute Co., Ltd., Xi’an 710032, Shaanxi, China
Abstract:In order to effectively control and reduce the transverse crack defect at corner of continuous casting slab,the current study developed two kinds of slab model,which are strands with round corner and with chamfered corner,based on the formation mechanism of transverse crack defects. The solidification process of ultra-thick rectangular slab was simulated,and the distribution of temperature and shell growth along casting direction were obtained. Based on the solidification simulation,the thermal-mechanical coupling moded was established to analyze the stress variation within solidified strand. The possibilities of crack formation on steel grades were discussed. The results showed that the distributions of temperature and stress at corner for slab with round mold or chamfered mold have been improved,compared to the traditional rectangular mold. The designed molds could make the solidified strand avoid effectively high temperature brittle zone of steel in secondary cooling zone and reduce the stress value at the corner of slab,resulting in a reduction of crack formation.
申燕强,白明华,高朋垒,陈坚兴. 不同角部形状特厚矩形坯凝固传热及应变数值模拟[J]. 钢铁, 2016, 51(4): 38-43.
SHEN Yan-qiang,BAI Ming-hua,GAO Peng-lei ,CHEN Jian-xing. Numerical simulation of heat-transfer and strain during solidification in ultra-thick rectangular slab with different shape of corner. Iron and Steel, 2016, 51(4): 38-43.
Mintz B, Yue S, Jonas J J.Hot Ductility of Steelsand Its Relationship to the Problem of Transverse Cracking During Continuous Cating[J].International Materials Revis, 1991, 36(5):187-188
[1]
Mintz B, Yue S, Jonas J J.Hot Ductility of Steelsand Its Relationship to the Problem of Transverse Cracking During Continuous Cating[J].International Materials Revis, 1991, 36(5):187-188
[2]
Crowther D N, Green M J W, Michell P S.Microalloying in Steel[M].Switzerlang:Trans Tech Publications Ltd, 1998:469.
Mintz B, Arrowsmith J M.Hot-Ductility Behavior of C-Mn-Nb-Al Steels and Its Relationship to Crack Propa-[J].Metals Technology, 1979, 1(1):24-24
[4]
Mintz B, Arrowsmith J M.Hot-Ductility Behavior of C-Mn-Nb-Al Steels and Its Relationship to Crack Propa-[J].Metals Technology, 1979, 1(1):24-24
[5]
gation During the Straightening of Continuously Cast Strand [J].Metals Technology, 1979(1):24.[J].Steelmaking Conference Proceedings, 1996, 1(1):287-288
[5]
gation During the Straightening of Continuously Cast Strand [J].Metals Technology, 1979(1):24.[J].Steelmaking Conference Proceedings, 1996, 1(1):287-288
[6]
Hans-Jurgen, Klingelhofer, Klingelhofer, G, etal.Hydraulic Oscillation Drive for Resonance MMolds[C]Steelm-
[6]
Hans-Jurgen, Klingelhofer, Klingelhofer, G, etal.Hydraulic Oscillation Drive for Resonance MMolds[C]Steelm-
Mintz B, Abushosha R.Influence of Vanadium on Hot Ductility of Steel[J].Ironmaking Steelmaking, 1993(20):[J].Ironmaking Steelmaking, 1993, 20(6):445-446
[11]
Mintz B, Abushosha R.Influence of Vanadium on Hot Ductility of Steel[J].Ironmaking Steelmaking, 1993(20):[J].Ironmaking Steelmaking, 1993, 20(6):445-446