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以Cr3复合铸钢支承辊为研究对象,采用差温热处理工艺制备满足性能要求的支承辊.研究了支承辊在差温热处理过程中的温度分布情况,分析了轧辊工作层的硬度和组织,运用已开发的淬火温度场模拟系统对支承辊油淬过程温度场进行模拟,并将模拟结果与实测结果进行了比较.结果表明:使用差温热处理工艺可使支承辊的辊芯和辊身在加热完成后得到不同的温度,从而使其在随后的淬火过程中得到不同的组织.支承辊经差温热处理工艺加热后,轧辊工作层内的硬度和组织均满足使用要求.运用已开发的淬火温度场模拟系统对支承辊油淬过程进行模拟,模拟结果与实验结果相吻合,证明该系统具有较高的可靠性,可用于热处理工艺优化,能够为实际生产提供定量的参考依据.
Cr3 composite cast steel backup roll as the research object, the differential temperature heat treatment process is used to prepare the backup roll to meet the performance requirements.Researching the temperature distribution of the backup roll during the differential temperature annealing process, the hardness and structure of the working layer of the roll are analyzed , The developed quenching temperature field simulation system was used to simulate the temperature field during the oil quenching process of the support roller and the simulation results were compared with the measured results.The results show that the use of differential temperature heat treatment can make the roller core and roller After the heating is completed, the different temperatures are obtained, so that different structures are obtained in the subsequent quenching process.The hardness and the structure in the working layer of the roller meet the requirements after being heated by the differential temperature heat treatment process. The developed quenching temperature field simulation system simulates the oil-quenching process of the support roller. The simulation results are in good agreement with the experimental results, which proves that the system has high reliability and can be used for optimization of heat treatment process and can provide quantitative reference for practical production.