文档介绍：沙钢宽厚板工艺技术
沈文荣邱松年钱洪建
(江苏沙钢集团有限公司)
×5050mm工作辊、带油膜轴承Φ2300×4900mm 支承辊,最大轧制力100MN,最大切断力矩2×4,925kNm,高刚度、,靠中间坯待温时间及未再结晶区γ/α相变较低终轧温度抑制新晶粒成长。MULPIC装置中加速冷却或直接淬火钢板。终轧通过MULPIC装置加速冷却使固溶体内保持大量Nb、V、Ti、Mo微合金元素粒子有利γ/α相变、铁素体与贝氏体内沉淀而改善组织性能。终轧温度低及增加冷却速率有增加沉淀强化和位错密度高强效果。转变温度取决微合金设计、终轧温度及加速冷却。精整工序热矫、冷却、切边定尺剪切及冷矫钢板,某些钢板350~400℃间出现剪口应力断裂要堆垛缓冷。
关键词宽厚板轧热机轧制多功能冷却装置相变 UOE板
SIS′Wide Heavy Ptate Process Technology
Shen Wenrong Qiu Songnian Qian Hongjian
(Shagang Iron & Steel Group ,Suzhou,215625,Jiangsu )
Abstract In ,by Shagang Iron & Steel pany. Ltd.,SIS,was build latest modernization wide heavy plate operation line. The wide heavy mill is the largest plate mill in China. Main date of the heavy plate mill equipment including Φ1210×5050mm Work roll,Φ2300×4900mm back-up roll, back-up roll oil film bearings and HAGC,10,0000kN maximum rolling force, 2×4925kNm cut-out torque. Work roll bending system ,hydraulic AGC and high elasticity module of mill have to meet plate high quality and shape basic requirement.
TMCP, a minimum degree of deformation is carried out in the temperature range of the metal stable austenite, whereby no re-crystallization takes place before the γ/α-transformation, so that the new grain formation is taken over by the transformation reaction. The necessary low fini