变形程度和坯料高径比对反挤压凹模的影响
Influence of Deformation and Ratio of Blank Height and Diameter on Backward Extrusion Die
张超杰， 杨永顺， 尹甜甜
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作者单位：河南科技大学 材料科学与工程学院， 河南 洛阳 471003
中文关键字：反挤压； 数值模拟； 外内径之比
英文关键字：backward extrusion; numerical simulation; ratio of die's external diameter and internal diameter
中文摘要：基于Deform-3D软件分析了变形程度和坯料高径比对反挤压整体式凹模的影响。数值模拟结果表明，随着变形程度的增加所需凹模外内径之比逐渐增大；随着坯料高度的增加所需凹模外内径之比呈先增加后减小并又保持不变的规律。
英文摘要：The influences of deformation and ratio of blank height and diameter on the force distribution of the backward extrusion die were analyzed by Deform-3D software. The numerical simulation demonstrates that the ratio of die's external diameter and internal diameter gradually increases with the increase of deformation; with the height of blank increasing, the ratio increases again and then decreases, and remains at last.