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针对辊式淬火方式,分析7050铝合金大板辊式淬火过程中辊道速率变化对板材温度场与应力场的影响。利用Fortran语言编写换热子程序对MSC.Marc有限元软件进行二次开发,建立铝合金大板辊式淬火仿真模型。分析不同的辊道速率工况下铝合金大板淬火过程中温降特性,获得了铝合金大板淬火后的应力分布规律。利用实验的应力测试结果验证了仿真规律的正确性。研究表明:铝合金大板辊式淬火过程中,辊道速率的增加有利于提高大板应力分布的均匀性。
Aiming at the roll quenching method, the influence of the change of roller velocity on the temperature field and stress field of the plate during the quenching process of 7050 aluminum alloy large plate roller was analyzed. The heat exchanger subroutine was compiled by using Fortran language to develop the MSC.Marc finite element software for the second time, and a simulation model of aluminum alloy large plate roller quenching was established. The temperature drop characteristics of large aluminum plate quenching process under different roller speed conditions were analyzed, and the stress distribution law of the large plate aluminum alloy after quenching was obtained. The correctness of the simulation rule is verified by the experimental stress test results. The results show that the increase of roller speed during the large-plate aluminum alloy roll quenching process is beneficial to improve the uniformity of the stress distribution in the slab.