The deforming force of cone-die direct extrusion is solved by a mathematic method based on the simplified flow model of slip line field.
基于滑移线场的简化流动模型，运用数学方法求解出了一种锥形模正挤压变形力的最佳上限解，并将该上限解用通用解析式表达出来。
The tensile strength, zinc coat mass and service life of die of galvanized steel wire after drawing are compared on the condition of different work cone angle.
在不同的工作锥角度下，比较镀锌钢丝拉拔后的抗拉强度、锌层质量、模子寿命。
The results show that the extrusion quality of even die, cone die and pre protection die are better, but that of the replace die is worse.
挤压结果表明：平模、锥模和前置保护分流模成型质量较好，而替代式保护分流模挤压失败；
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