|
|
|
Abstract In the straightening zone of continuous casters，as the solidifying shell containing molten steel bears the combination of ferro-static pressure and straightening foprce，the bulging and unbending deformations of the continuously cast slabs occur simultaneously. The strains caused by bulging and unbending are superimposed. If the strain exceeds the critical strain on the solid-liquid interface，internal cracks may occur. Accurate calculations of the strains and strain rates are significant to the design of strand supporting system and the decision of casting parameters. Thus，based on the elasto-viscoplastic behavior of steel at elevated temperature，a mathematical model of continuously cast slabs with liquid core during the continuous straightening process is estabilished. In order to validate the mathematical model，the calculated bulging profile was compared with the measurements on a pilot caster. Then the strains and strain rates at different points on the cross section of the continuously cast slabs in an industrial caster designed by VAI were computed. Finally，base on the caster structure and process parameters，the maximum strain rate on the solid-liquid interface in the straightening zone with a certain range of roll pitches was computed，the influences of casting speed and roll pitches were analyzed. Then the results were compared with the critical strain rates of typical steel types and the study obtained a suitable roll pitches in the straightening zone.
|
|
Received: 20 July 2015
Published: 14 April 2016
|
|
|
|
|
|
| [1] |
Verma R K, Girase N U.Comparison of different caster designs based on bulging,bending and misalignment strains in solidifying strand[J].Ironmaking & Steelmaking, 2006, 33(6):471-476
|
| [1] |
Verma R K, Girase N U.Comparison of different caster designs based on bulging,bending and misalignment strains in solidifying strand[J].Ironmaking & Steelmaking, 2006, 33(6):471-476
|
| [2] |
LI Cheng-bin, Thomas B G, MEI Feng.Prediction of centerline cracks incurred in the bloom continuous casting of steel[J].Baosteel Technical Research, 2010, 4(2):40-43
|
| [2] |
LI Cheng-bin, Thomas B G, MEI Feng.Prediction of centerline cracks incurred in the bloom continuous casting of steel[J].Baosteel Technical Research, 2010, 4(2):40-43
|
| [3] |
孙蓟泉, 盛义平.连铸坯鼓肚变形的粘弹性分析[J].东北重型机械学院学报, 1992, 17(3):197-202
|
| [3] |
孙蓟泉, 盛义平.连铸坯鼓肚变形的粘弹性分析[J].东北重型机械学院学报, 1992, 17(3):197-202
|
| [4] |
SUN Ji-quan, SHENG Yin-ping.The visco-elastic calculation for bulging deformation of continuously casted slab[J].Journal of Northeast Heavy Machinery Institute, 1992, 17(3):197-202
|
| [4] |
SUN Ji-quan, SHENG Yin-ping.The visco-elastic calculation for bulging deformation of continuously casted slab[J].Journal of Northeast Heavy Machinery Institute, 1992, 17(3):197-202
|
| [5] |
孙蓟泉，盛义平，张兴中.连铸板坯的鼓肚变形与应力分析[J].钢铁研究学报, 1996, 8(1):11-15
|
| [5] |
孙蓟泉，盛义平，张兴中.连铸板坯的鼓肚变形与应力分析[J].钢铁研究学报, 1996, 8(1):11-15
|
| [6] |
SUN Ji-quan, SHENG Yi-ping, ZHANG Xing-zhong.Analysis of bulging deformation and stress in continuous cast slabs[J].Journal of Iron and Steel Research, 1996, 8(1):11-15
|
| [6] |
SUN Ji-quan, SHENG Yi-ping, ZHANG Xing-zhong.Analysis of bulging deformation and stress in continuous cast slabs[J].Journal of Iron and Steel Research, 1996, 8(1):11-15
|
| [7] |
盛义平, 孙蓟泉, 章敏.连铸板坯鼓肚变形量的计算[J].钢铁, 1993, 28(3):20-25
|
| [7] |
盛义平, 孙蓟泉, 章敏.连铸板坯鼓肚变形量的计算[J].钢铁, 1993, 28(3):20-25
|
| [8] |
SHENG Yi-ping, SUN Ji-quan, ZHANG Min.Calculation for bulging deformation of continuously casted slab[J].Iron and Steel, 1993, 28(3):20-25
|
| [8] |
SHENG Yi-ping, SUN Ji-quan, ZHANG Min.Calculation for bulging deformation of continuously casted slab[J].Iron and Steel, 1993, 28(3):20-25
|
| [9] |
王忠民, 刘宏昭, 杨拉道, 等.连铸板坯的粘弹性板模型及鼓肚变形分析[J].机械工程学报, 2001, 37(2):66-69
|
| [9] |
王忠民, 刘宏昭, 杨拉道, 等.连铸板坯的粘弹性板模型及鼓肚变形分析[J].机械工程学报, 2001, 37(2):66-69
|
| [10] |
WANG Zhong-min, LIU Hong-zhao, YANG La-dao, et al.Mathematical model of visco-elastic thin plate and analyses of bulging deformation for continuous cast slabs[J].Chinese Journal of Mechanical Engineering, 2001, 37(2):66-69
|
| [11] |
王忠民, 黄梓嫄.基于辛几何法分析连铸板坯的黏弹性鼓肚变形[J].机械工程学报, 2014, 50(23):82-88
|
| [10] |
WANG Zhong-min, LIU Hong-zhao, YANG La-dao, et al.Mathematical model of visco-elastic thin plate and analyses of bulging deformation for continuous cast slabs[J].Chinese Journal of Mechanical Engineering, 2001, 37(2):66-69
|
| [11] |
王忠民, 黄梓嫄.基于辛几何法分析连铸板坯的黏弹性鼓肚变形[J].机械工程学报, 2014, 50(23):82-88
|
| [12] |
WANG Zhong-min, HUANG Zi-yuan.Viscoelastic bulging deformation analysis of continuous casting slab based on the symplectic geometric method[J].Chinese Journal of Mechanical Engineering, 2014, 50(23):82-88
|
| [13] |
刘宏昭, 王忠民.板坯连铸凝壳的热变形分析[J].机械工程学报, 2006, 42(3):68-71
|
| [12] |
WANG Zhong-min, HUANG Zi-yuan.Viscoelastic bulging deformation analysis of continuous casting slab based on the symplectic geometric method[J].Chinese Journal of Mechanical Engineering, 2014, 50(23):82-88
|
| [13] |
刘宏昭, 王忠民.板坯连铸凝壳的热变形分析[J].机械工程学报, 2006, 42(3):68-71
|
| [14] |
LIU Hong-zhao, WANG Zhong-min.Thermal deflection analysis of the solidified shell in the continuous casting of slab[J].Chinese Journal of Mechanical Engineering, 2006, 42(3):68-71
|
| [14] |
LIU Hong-zhao, WANG Zhong-min.Thermal deflection analysis of the solidified shell in the continuous casting of slab[J].Chinese Journal of Mechanical Engineering, 2006, 42(3):68-71
|
| [15] |
Kajitani T, Drezet J M, Rappaz M.Numerical simulation of deformation-induced segregation in continuous casting of steel[J].Metallurgical and Materials Transactions A, 2001, 32(6):1479-1491
|
| [15] |
Kajitani T, Drezet J M, Rappaz M.Numerical simulation of deformation-induced segregation in continuous casting of steel[J].Metallurgical and Materials Transactions A, 2001, 32(6):1479-1491
|
| [16] |
Okamyra K, Kawashima H.Three-dimensional elasto-plastic and creep analysis of bulging in continuously cast slabs[J].ISIJ international, 1989, 29(8):666-672
|
| [16] |
Okamyra K, Kawashima H.Three-dimensional elasto-plastic and creep analysis of bulging in continuously cast slabs[J].ISIJ international, 1989, 29(8):666-672
|
| [17] |
Pascon F, Cescotto S, Habraken A M.A 25D finite element model for bending and straightening in continuous casting of steel slabs[J].International Journal for Numerical Methods in Engineering, 2006, 68(1):125-149
|
| [17] |
Pascon F, Cescotto S, Habraken A M.A 25D finite element model for bending and straightening in continuous casting of steel slabs[J].International Journal for Numerical Methods in Engineering, 2006, 68(1):125-149
|
| [18] |
Desinger M.Tacke K HUnbending of continuously cast slabs with liquid core[J].Ironmaking ＆ Steelmaking, 1997, 24(4):321-328
|
| [18] |
Desinger M.Tacke K HUnbending of continuously cast slabs with liquid core[J].Ironmaking ＆ Steelmaking, 1997, 24(4):321-328
|
| [19] |
Kozlowski P K, Thomas B G, Azzi J A.Simple constitutive equations for steel at high temperature[J].Metallurgical Transaction A, 1992, 23(3):903-918
|
| [19] |
Kozlowski P K, Thomas B G, Azzi J A.Simple constitutive equations for steel at high temperature[J].Metallurgical Transaction A, 1992, 23(3):903-918
|
| [20] |
Shigeyuki M, Kaname W, Yukio W.Analysis of Bulging in Continuously Cast Slabs[J].Tetsu-to-Hagan, 1983, 69(12):S938-S938
|
| [20] |
Shigeyuki M, Kaname W, Yukio W.Analysis of Bulging in Continuously Cast Slabs[J].Tetsu-to-Hagan, 1983, 69(12):S938-S938
|
| [21] |
Pierer R, Bernhard C, Chimani C.Evaluation of common constitutive equations for solidifying steel[J].BHM Berg-und Hüttenm?nnische Monatshefte, 2005, 150(5):163-169
|
| [21] |
Pierer R, Bernhard C, Chimani C.Evaluation of common constitutive equations for solidifying steel[J].BHM Berg-und Hüttenm?nnische Monatshefte, 2005, 150(5):163-169
|
| [22] |
Rowan M, Thomas B G, Bernhard C.Measuring mechanical behavior of steel during solidification: modeling the SSCC test[J].Metallurgical and Materials Transaction B, 2011, 42(4):837-851
|
| [22] |
Rowan M, Thomas B G, Bernhard C.Measuring mechanical behavior of steel during solidification: modeling the SSCC test[J].Metallurgical and Materials Transaction B, 2011, 42(4):837-851
|
| [23] |
Pühringer O M.Strand Mechanics for Continuous Slab Casting Plants[J].Stahl u. Eisen, 1976, 96(6):279-284
|
| [23] |
Pühringer O M.Strand Mechanics for Continuous Slab Casting Plants[J].Stahl u. Eisen, 1976, 96(6):279-284
|
| [24] |
Kinoshita K, Emi T, Kasai M.Thermal elasto-plastic stress analysis of solidifying shell in continuous casting mold[J].Tetsu-to-Hagan, 1979, 65(14):2022-2031
|
| [24] |
Kinoshita K, Emi T, Kasai M.Thermal elasto-plastic stress analysis of solidifying shell in continuous casting mold[J].Tetsu-to-Hagan, 1979, 65(14):2022-2031
|
| [25] |
Sakui S, Sakui T.Deformation behavior of a 016% carbon steel in the austenite range[J].Tetsu To Hagane, 1977, 63(2):285-293
|
| [25] |
Sakui S, Sakui T.Deformation behavior of a 016% carbon steel in the austenite range[J].Tetsu To Hagane, 1977, 63(2):285-293
|
| [26] |
Bealy E L.On the mechanism of halfway cracks and macro-segregation in continuously cast steel slabs (i)Halfway cracks[J].Scandinavian Journal of Metallurgy, 1995, 24(2):63-80
|
| [26] |
Bealy E L.On the mechanism of halfway cracks and macro-segregation in continuously cast steel slabs (i)Halfway cracks[J].Scandinavian Journal of Metallurgy, 1995, 24(2):63-80
|
| [27] |
Hetnarski R B, Eslami M R.Thermal stress-advanced theory and applications[M]. Berlin: Springer, 2004.
|
| [27] |
Hetnarski R B, Eslami M R.Thermal stress-advanced theory and applications[M]. Berlin: Springer, 2004.
|
| [28] |
Won Y M, Yeo T J, Seol D J.A new criterion for internal crack formation in continuously cast steels[J].Metallurgical and Materials Transaction B, 2000, 31(4):779-794
|
| [28] |
Won Y M, Yeo T J, Seol D J.A new criterion for internal crack formation in continuously cast steels[J].Metallurgical and Materials Transaction B, 2000, 31(4):779-794
|
| [29] |
Vaterlaus A, Mangin M M.Continuous straightening process[C]// Proceedings of the 68th Steelmaking Conference, Detroit, MI, England, 1985. Iron & Steel Soc of AIME, Warrendale, PA, USA 1985: 471-487.
|
| [29] |
Vaterlaus A, Mangin M M.Continuous straightening process[C]// Proceedings of the 68th Steelmaking Conference, Detroit, MI, England, 1985. Iron & Steel Soc of AIME, Warrendale, PA, USA 1985: 471-487.
|
| [30] |
Sugitani Y, Masanori N.Measurement of bulging in continuous casting machine[J].Tetsu To Hagane, 1984, 70(12):S898-S898
|
| [30] |
Sugitani Y, Masanori N.Measurement of bulging in continuous casting machine[J].Tetsu To Hagane, 1984, 70(12):S898-S898
|
| [1] |
TIAN Ya-qiang1,BI Wen-qiang1,PAN Hong-bo2,LI Hong-bin1,ZHENG Xiao-ping1,CHEN Lian-sheng1. Effect of carbide evolution on Lüders behavior of cold rolled ART 0.1C-7Mn steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(6): 505-511. |
| [2] |
XIAO Shao-bin, WANG Wei, LIU Tian-yu, ZHANG Qin, LÜ Zhi-qing. Effects of vacancies and C atoms on mechanical properties of Fe grain boundary[J]. Iron and Steel, 2020, 55(4): 75-81. |
| [3] |
chishirong chishirongchishirong. [J]. , 2020, 45(3): 0-0. |
| [4] |
. Analysis and control of slag inclusion defect of low carbon steel slab[J]. , 2020, 45(2): 0-0. |
| [5] |
. Discussion on foot roll length design of high speed for billet[J]. , 2020, 45(2): 0-0. |
| [6] |
Gan-Shui ZHOU. Diagnosis of instability during trial production of the billet continuous casting in a steel factory in Vietnam[J]. , 2020, 45(2): 0-0. |
|
|
|
2016, Vol. 51 
