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本文根据三辊轧管的变形特点，在适当简化的基础上，构造滑移线场，推导出了轧制压力的计算公式，并得到实验验证。
According to the deformation characteristics of the three-pass rolling pipe, slip line field is constructed on the basis of proper simplification, and the formula of rolling pressure is deduced and verified by experiment.