On the Roller-Die Drawing (1st Report)

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  • ローラーダイス引抜法の特長
  • ローラーダイス ヒキヌキホウ ノ トクチョウ

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Abstract

The drawing of wire through drawing die has a long history and various advantages, but the difficulty associated with the method is that the friction in the drawing cone is large and this causes many troubles. Hence, an attempt was made by the authors to improve the wire drawing process by means of a new wire drawing tool in which the friction conditions are essentially improved. The wire drawing tool, named the roller dies, consists of rollers with a groove on it. The wire is drawn through the die formed by the grooves, and the rollers rotate freely as the wire is drawn through. Tests of the capacities of the roller dice in the laboratory as well as in drawing shops in the case of drawing of aluminium and copper wire were carried out. The results showed the following features (1) low power consumption, (2) high permissible areal reduction in one pass, (3) no need of lubricant of high quality. The properties of the drawn wire were nearly the same as those of the wire drawn with ordinary dies.

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