以热轧带钢卷取后的钢卷为主要研究对象，运用有限元分析软件MARC,建立了带钢卷取后钢卷的温度场模型，相变模型，计算了钢卷缓冷至室温过程中的温度场变化情况以及不同时刻各相的分布情况。计算表明，对于钢卷的温度场分布，冷却的最慢点在靠近钢卷内径壁的1/3处，钢卷的最大温差发生在冷却后的第9 h，达到了314 ℃。带钢卷取后的冷却过程中，奥氏体不再转变为铁素体，铁素体含量始终保持在82.27%~83.026%。残余奥氏体则继续转化为珠光体和贝氏体，含量分别为16.45%~17.73%和0.524%~0.546%，马氏体只在带钢端部出现少量。
By taking the hotrolled strip coiled as main example, the temperature fields and transformation have been modeled by MARC FEM software. Temperature behavior and phase distribution at different time of cooling after coiling were calculated. The results show that, for the temperature behavior, the slowest location of cooling speed is in the intermediate region between the center region and the inner surface region, which is situated at about 1/3 of the total thickness of coil layers apart from the inner wall, and the maximum temperature difference happens at 9th hours, which is 314 ℃.During the cooling, the transformation from ferrite has been stopped, its contents is 82.27%83.026%. The retained austenite are continue to transform into pearlite and bainite, its contents is 16.45%~17.73% and 0.524%~0.546% respectively. Martensite just appears on the edge of the coil.
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