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为了研究初始成形温度对超高强板热成形件精度的影响规律,通过实验分析了初始成形温度和热成形件回弹、厚度、氧化皮厚度及力学性能的关系。结果表明,在实验条件下,随着初始成形温度增加,零件的力学性能先增加,在初始成形温度高于812℃后,零件的力学性能变化不大;随着初始成形温度的增加,零件的回弹量和最小厚度先减小,在初始成形温度高于812℃后,零件回弹和最小厚度变化不大;初始成形温度对氧化皮厚度影响不大。
In order to study the effect of initial forming temperature on the accuracy of ultra-high strength hot-formed parts, the relationship between initial forming temperature and hot forming rebound, thickness, scale thickness and mechanical properties was analyzed experimentally. The results show that under the experimental conditions, the mechanical properties of the parts first increase with the initial forming temperature, and the mechanical properties of the parts do not change much when the initial forming temperature is higher than 812 ℃. With the increase of the initial forming temperature, The rebound amount and the minimum thickness first decreased, and the initial rebound and the minimum thickness did not change much when the initial forming temperature was higher than 812 ℃. The initial forming temperature had little effect on the thickness of the scale.