Coiling method of cold rolled hoop

Abstract

Abstract PURPOSE: To prevent the fold-form defects of hoop by inserting the sleeve which has the crown amount corresponding to the top part shape of the hoop to be coiled into reel. CONSTITUTION: The hoop is coiled by using a sleeve 1 which has convex crown 2 when the hoop is center-elongated form and by using a sleeve 1 which has concave crown 3 when it is edge-elongated form. The respective crown amounts t 1 of the convex crown 2 and concave crown 3 with respect to the thickness t of the sleeve 1 having an outside diameter d are having been set at the adequate values by being corresponded to the rates of elongation of the hoop. Ordinarily, it may be predicted whether the shape of the hoop becomes center-elongated or edge-elongated depending upon rolling conditions and the sleeve whose shape has beforehand been selected according to the shape of the hoop to be predicted depending upon the rolling conditions is inserted into the reel. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Hatsuo Miyashita
• 👤 Kenji Kurihara

Bibliographic Details