On the Roller-Die Drawing

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  • ローラーダイスの力学的特性
  • ローラーダイス ノ リキガクテキ トクセイ

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Abstract

In order to obtain guiding principles for development of the roller dies for practical use, researches for drawing of rectangular bar through flat rollers were carried out. The drawing force, the roller separating force and the spread of square wire were measured under various drawing conditions, namely, various roller diameters, wire sizes, reduction in one pass and backward tensions. Calculations of the drawing force, the roller separating force and the roller pressure during drawing of wide strip through flat rollers were done by using the elementary two-dimentional theory of plasticity. Based on above results, guiding principles for development of the practical roller dies are mentioned.

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