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中文摘要：
采用有限元数值模拟方法,比较分析了三辊楔横轧与两辊楔横轧轧件内部缺陷的产生几率和存在形式. 根据轧件内部的应力应变状态,阐述了三辊轧制轧件中心点缺陷产生可能性较小和断裂呈环向裂纹的原因. 分析表明,三辊楔横轧轧制工艺在轧件心部成形质量上具有明显的优势.
英文摘要：
The occurrence probability and existence form of internal defects in rolled pieces during threeroll and two-roll cross wedge rolling were compared and analyzed by finite element numerical simulation.The reason that the internal defects little occur at the center points and fissure takes an annular form during three-roll rolling was expounded based on the state of stress and strain at the center of rolled pieces. It is indicated that three-roll cross wedge rolling process has a distinct advantage in the forming quality of the center of rolled pieces.
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