In addition, this paper presents how the diameter reducing rate, the die semicone angle, the friction coefficient and the original wall thickness influence the buckling and the axial elongation rate.
并分析了缩径率、缩径凹模半锥角、摩擦系数、缩径管坯初始壁厚对管端翘曲和轴向伸长率的影响规律。
The research advances about die swell, the reduction of friction between die wall and polymer melt, wall slip and melt fracture in polymer extrusion are described in the paper.
对有关挤出胀大、减粘降阻、熔体破裂及壁面滑移的研究进展进行了综述，指出气辅挤出技术是解决以上问题的有效方法。
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