大型热连轧线基于超快速冷却的新一代控轧控冷技术开发与应用
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摘要
超快速冷却作为近年来热轧钢材控轧控冷技术领域最重要的技术突破,为热连轧产线产品的生产工艺进步提供了重要支撑。基于热连轧板带钢超快速冷却系统的开发与应用实践,在阐明高温运动钢板高强度均匀化冷却机理机制的基础上,重点介绍了超快冷系统在热连轧产线的工艺配置,以及采用超快冷工艺,在系列细晶钢、高钢级管线钢、热轧双相钢、低残余应力热轧板带钢等特色化产品领域的工艺开发及应用情况。基于超快冷系统冷却速度无级调控优势,开发了基于超快冷装备的层流冷却、加强型冷却、超快速冷却3种冷却模式及模型系统,进一步结合粗轧中间坯超快冷控温系统,构建了基于超快速冷却的热连轧线新一代控轧控冷多工序温度协同控制系统,相关技术应用取得良好效果。
As the most important technological breakthrough of thermo-mechanical control process for hot-rolled strips, ultra-fast cooling provides important support for the progress of hot rolled strips productions. Based on the development and application of hot rolled strips ultra-fast cooling system, the mechanism of high-intensity homogenization cooling of high-temperature moving strips was explained, and the technology disposing of ultra-fast cooling system in hot rolled lines, the development and application of ultra-fast cooling technology in fine grain steel, high grade pipeline steel, hot rolled dual phase steel, low residual stress steel and other typical products of hot rolled steel strips were emphatically introduced. Based on the advantages of stepless regulation of cooling speed in ultra-fast cooling system, three cooling modes(laminar cooling, enhanced cooling, and ultra-fast cooling) and model system were developed based on ultra-fast cooling equipment, and the rough rolling intermediate slab temperature control system was further combined. A multi-process temperature coordinated optimization control system of NG-TMCP technology based on ultra-fast cooling was constructed, and the application of related technologies has already acquired better effect.
As the most important technological breakthrough of thermo-mechanical control process for hot-rolled strips, ultra-fast cooling provides important support for the progress of hot rolled strips productions. Based on the development and application of hot rolled strips ultra-fast cooling system, the mechanism of high-intensity homogenization cooling of high-temperature moving strips was explained, and the technology disposing of ultra-fast cooling system in hot rolled lines, the development and application of ultra-fast cooling technology in fine grain steel, high grade pipeline steel, hot rolled dual phase steel, low residual stress steel and other typical products of hot rolled steel strips were emphatically introduced. Based on the advantages of stepless regulation of cooling speed in ultra-fast cooling system, three cooling modes(laminar cooling, enhanced cooling, and ultra-fast cooling) and model system were developed based on ultra-fast cooling equipment, and the rough rolling intermediate slab temperature control system was further combined. A multi-process temperature coordinated optimization control system of NG-TMCP technology based on ultra-fast cooling was constructed, and the application of related technologies has already acquired better effect.
引文
[1] 王国栋,王昭东,刘振宇,等.基于超快冷的控轧控冷装备技术的发展[J].中国冶金,2016,26(10):9.(Wang G D,Wang Z D,Liu Z Y,et al.Development of TMCP technology based on ultra-fast cooling[J].China Metallurgy,2016,26(10):9.)
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[4] 李振垒.热轧带钢超快速冷却控制系统的开发与应用[D]//沈阳:东北大学,2010.(Li Z L.Research and Application on Ultra Fast Cooling Controlling System of Hot Strip Rolling[D]//Shenyang:Northeastern University,2010.)
[5] 王国栋.新一代控制轧制和控制冷却技术与创新的热轧过程[J].东北大学学报,2009,30(7):913.(Wang G D.New generation TMCP and innovative hot rolling process[J].Journal of Northeastern University,2009,30(7):913.)
[6] 袁国,王昭东,王国栋,等.控制冷却在板带材开发生产中的应用[J].钢铁研究学报,2006,18(1):1.(Yuan G,Wang Z D,Wang G D,et al.Application of controlled cooling technology to improvement of steel quality[J].Journal of Iron and Steel Research,2006,18(1):1.)
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[8] 袁国,王国栋,刘相华.带钢超快速冷却条件下的换热过程[J].钢铁研究学报,2007,19(5):37.(Yuan G,Wang G D,Liu X H.Heat transfer process of hot strip under ultra-fast cooling condition[J].Journal of Iron and Steel Research,2007,19(5):37.)
[9] Li C N,Yuan G,Ji F Q,et al.Mechanism of microstructural control and mechanical properties in hot rolled plain C-Mn steel during controlled cooling[J].ISIJ International,2015,8(55):1721.
[10] 袁国,王学强,康健,等.热轧板带钢超快冷工艺在厚规格管线钢中的开发与应用[J].中国冶金,2014,24(12):212.(Yuan G,Wang X Q,Kang J,et al.Development and application of ultra fast cooling technology for hot rolled strip in heavy gauge pipeline steel[J].China Metallurgy,2014,24(12):212.)
[11] 康健,赵金华,王学强,等.超快冷下X70管线钢热轧工艺及显微组织[J].东北大学学报:自然科学版,2015,36(11):1576.(Kang J,Zhao J H,Wang X Q,et al.Hot rolling process and microstructures of X70 pipeline steel under ultra-fast cooling[J].Journal of Northeastern University:Natural Science,2015,36(11):1576.)
[12] 赵金华,王学强,康健,等.超快冷工艺下X80管线钢的DWTT裂纹扩展行为[J].材料研究学报,2017,31(10):728.(Zhao J H,Wang X Q,Kang J,et al.Crack propagation behavior during DWTT for X80 pipeline steel processed via ultra-fast cooling technique[J].Chinese Journal of Materials Research,2017,31(10):728.)
[13] Zhao J,Wang X,Hu W,et al.Microstructure and mechanism of strengthening of microalloyed pipeline steel:Ultra-fast cooling(UFC)versus laminar cooling(LC)[J].Journal of Materials Engineering and Performance,2016,25(6):2511.
[14] Zhao J,Hu W,Wang X,et al.Effect of microstructure on the crack propagation behavior of microalloyed 560 MPa(X80)strip during ultra-fast cooling[J].Materials Science and Engineering,2016,666A:214.
[15] Zhao J,Hu W,Wang X,et al.A Novel thermo-mechanical controlled processing for large-thickness microalloyed 560 MPa(X80)pipeline strip under ultra-fast cooling[J].Materials Science and Engineering,2016,673A:373.
[16] 利成宁,袁国,周晓光,等.分段冷却模式下热轧双相钢的组织演变及力学性能[J].东北大学学报:自然科学版,2012,34(6):810.(Li C N,Yuan G,Zhou X G,et al.Microstructure evolution and mechanical properties of hot-rolled dual phase steel with stage cooling pattern[J].Journal of Northeastern University:Natural Science,2013,34(6):810.)
[17] 王国栋,刘相华,孙丽娟,等.包钢1 750 mm CSP“超快速冷却”系统及590 MPa级C-Mn低成本热轧双相钢开发[J].钢铁,2008,43(3):4.(Wang G D,Liu X H,Sun L J,et al.Ultra fast cooling on Baotou CSP line and development of 590 MPa grade C-Mn low cost hot rolled dual phase steel[J].Iron and Steel,2008,43(3):4.)
[18] Li C N,Ji F Q,Yuan G,et al.Microstructure and mechanical properties of economical dual phase wheel steels based on CSP line with later ultra fast cooling[J].Materials Research Innovations,2015,19(S4):S85.
[19] Li C N,Li X L,Yuan G,et al.Precipitation behavior and mechanical properties of a hot rolled Ti-bearing dual phase steel[J].Materials Science and Engineering,2016,673A:213.
[20] 李振垒,李海军,王昭东,等.热轧板带钢的超快速冷却控制系统[J].东北大学学报:自然科学版,2012,33(10):1436.(Li Z L,Li H J,Wang Z D,et al.Ultra-fast cooling control system for hot rolling strip[J].Journal of Northeastern University:Natural Science,2012,33(10):1436.)
[21] 李振垒.基于超快速冷却的热轧带钢轧后冷却控制系统与策略研究[D]//沈阳:东北大学,2010.(Li Z L.Research of Cooling Control System and Control Strategy after Rolling Based on UFC for Hot Rolled Strip[D]//Shenyang:Northeastern University,2010.)
[22] Li Z L,Li H J,Yuan G,et al.Research and application of ultra-fast cooling system and velocity controlled strategy for hot rolled strip[J].Steel Research International,2015,86(5):478.
[23] Li H,Li L,Li Y,et al.Online monitor and control of cooling temperature on run out table of hot strip mill[J].Steel Research International,2015,86(11):1225.
[24] Yuan G,Li Z L,Li H J,et al.Control and application of cooling path after rolling for hot strip based on ultra fast cooling[J].Journal of Central South University,2013,20(7):1805.
[25] 石建辉,袁国,江连运,等.CSP超快冷带钢头尾冷却控制方法的研究及应用[J].轧钢,2015,32(6):8.(Shi J H,Yuan G,Jiang L Y,et al.Research and application of cooling control method for the strip head-tail in CSP ultra-fast cooling[J].Steel Rolling,2015,32(6):8.)
[26] 李旭东,李海军,袁国,等.热连轧超快冷系统水压控制策略的开发与应用[J].轧钢,2016,33(4):49.(Li X D,Li H J,Yuan G,et al.Development and application of pressure control strategy for ultra-fast cooling on hot strip rolling[J].Steel Rolling,2016,33(4):49.)
[2] 轧制技术及连轧自动化国家重点实验室.热轧板带钢新一代TMCP工艺与装备技术开发及应用[M].北京:冶金工业出版社,2015.(State Key Laboratory of Rolling and Automation.Development and Application of New Generation TMCP Process and Equipment Technology for Hot Rolled Strip[M].Beijing:Metallurgical Industry Press,2015.)
[3] 王国栋.新一代TMCP技术[J].轧钢,2012,29(1):1.(Wang G D.Development of a new generation TMCP technology[J].Steel Rolling,2012,29(1):1.)
[4] 李振垒.热轧带钢超快速冷却控制系统的开发与应用[D]//沈阳:东北大学,2010.(Li Z L.Research and Application on Ultra Fast Cooling Controlling System of Hot Strip Rolling[D]//Shenyang:Northeastern University,2010.)
[5] 王国栋.新一代控制轧制和控制冷却技术与创新的热轧过程[J].东北大学学报,2009,30(7):913.(Wang G D.New generation TMCP and innovative hot rolling process[J].Journal of Northeastern University,2009,30(7):913.)
[6] 袁国,王昭东,王国栋,等.控制冷却在板带材开发生产中的应用[J].钢铁研究学报,2006,18(1):1.(Yuan G,Wang Z D,Wang G D,et al.Application of controlled cooling technology to improvement of steel quality[J].Journal of Iron and Steel Research,2006,18(1):1.)
[7] 王国栋,王毅,李俊峰,等.热轧板带钢新一代TMCP技术及应用[J].中国科技成果,2013(24):74.(Wang G D,Wang Y,Li J F,et al.Application of new generation TMCP technology for hot rolled strip[J].China Science and Technology Achievements,2013(24):74.)
[8] 袁国,王国栋,刘相华.带钢超快速冷却条件下的换热过程[J].钢铁研究学报,2007,19(5):37.(Yuan G,Wang G D,Liu X H.Heat transfer process of hot strip under ultra-fast cooling condition[J].Journal of Iron and Steel Research,2007,19(5):37.)
[9] Li C N,Yuan G,Ji F Q,et al.Mechanism of microstructural control and mechanical properties in hot rolled plain C-Mn steel during controlled cooling[J].ISIJ International,2015,8(55):1721.
[10] 袁国,王学强,康健,等.热轧板带钢超快冷工艺在厚规格管线钢中的开发与应用[J].中国冶金,2014,24(12):212.(Yuan G,Wang X Q,Kang J,et al.Development and application of ultra fast cooling technology for hot rolled strip in heavy gauge pipeline steel[J].China Metallurgy,2014,24(12):212.)
[11] 康健,赵金华,王学强,等.超快冷下X70管线钢热轧工艺及显微组织[J].东北大学学报:自然科学版,2015,36(11):1576.(Kang J,Zhao J H,Wang X Q,et al.Hot rolling process and microstructures of X70 pipeline steel under ultra-fast cooling[J].Journal of Northeastern University:Natural Science,2015,36(11):1576.)
[12] 赵金华,王学强,康健,等.超快冷工艺下X80管线钢的DWTT裂纹扩展行为[J].材料研究学报,2017,31(10):728.(Zhao J H,Wang X Q,Kang J,et al.Crack propagation behavior during DWTT for X80 pipeline steel processed via ultra-fast cooling technique[J].Chinese Journal of Materials Research,2017,31(10):728.)
[13] Zhao J,Wang X,Hu W,et al.Microstructure and mechanism of strengthening of microalloyed pipeline steel:Ultra-fast cooling(UFC)versus laminar cooling(LC)[J].Journal of Materials Engineering and Performance,2016,25(6):2511.
[14] Zhao J,Hu W,Wang X,et al.Effect of microstructure on the crack propagation behavior of microalloyed 560 MPa(X80)strip during ultra-fast cooling[J].Materials Science and Engineering,2016,666A:214.
[15] Zhao J,Hu W,Wang X,et al.A Novel thermo-mechanical controlled processing for large-thickness microalloyed 560 MPa(X80)pipeline strip under ultra-fast cooling[J].Materials Science and Engineering,2016,673A:373.
[16] 利成宁,袁国,周晓光,等.分段冷却模式下热轧双相钢的组织演变及力学性能[J].东北大学学报:自然科学版,2012,34(6):810.(Li C N,Yuan G,Zhou X G,et al.Microstructure evolution and mechanical properties of hot-rolled dual phase steel with stage cooling pattern[J].Journal of Northeastern University:Natural Science,2013,34(6):810.)
[17] 王国栋,刘相华,孙丽娟,等.包钢1 750 mm CSP“超快速冷却”系统及590 MPa级C-Mn低成本热轧双相钢开发[J].钢铁,2008,43(3):4.(Wang G D,Liu X H,Sun L J,et al.Ultra fast cooling on Baotou CSP line and development of 590 MPa grade C-Mn low cost hot rolled dual phase steel[J].Iron and Steel,2008,43(3):4.)
[18] Li C N,Ji F Q,Yuan G,et al.Microstructure and mechanical properties of economical dual phase wheel steels based on CSP line with later ultra fast cooling[J].Materials Research Innovations,2015,19(S4):S85.
[19] Li C N,Li X L,Yuan G,et al.Precipitation behavior and mechanical properties of a hot rolled Ti-bearing dual phase steel[J].Materials Science and Engineering,2016,673A:213.
[20] 李振垒,李海军,王昭东,等.热轧板带钢的超快速冷却控制系统[J].东北大学学报:自然科学版,2012,33(10):1436.(Li Z L,Li H J,Wang Z D,et al.Ultra-fast cooling control system for hot rolling strip[J].Journal of Northeastern University:Natural Science,2012,33(10):1436.)
[21] 李振垒.基于超快速冷却的热轧带钢轧后冷却控制系统与策略研究[D]//沈阳:东北大学,2010.(Li Z L.Research of Cooling Control System and Control Strategy after Rolling Based on UFC for Hot Rolled Strip[D]//Shenyang:Northeastern University,2010.)
[22] Li Z L,Li H J,Yuan G,et al.Research and application of ultra-fast cooling system and velocity controlled strategy for hot rolled strip[J].Steel Research International,2015,86(5):478.
[23] Li H,Li L,Li Y,et al.Online monitor and control of cooling temperature on run out table of hot strip mill[J].Steel Research International,2015,86(11):1225.
[24] Yuan G,Li Z L,Li H J,et al.Control and application of cooling path after rolling for hot strip based on ultra fast cooling[J].Journal of Central South University,2013,20(7):1805.
[25] 石建辉,袁国,江连运,等.CSP超快冷带钢头尾冷却控制方法的研究及应用[J].轧钢,2015,32(6):8.(Shi J H,Yuan G,Jiang L Y,et al.Research and application of cooling control method for the strip head-tail in CSP ultra-fast cooling[J].Steel Rolling,2015,32(6):8.)
[26] 李旭东,李海军,袁国,等.热连轧超快冷系统水压控制策略的开发与应用[J].轧钢,2016,33(4):49.(Li X D,Li H J,Yuan G,et al.Development and application of pressure control strategy for ultra-fast cooling on hot strip rolling[J].Steel Rolling,2016,33(4):49.)
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