MANUFACTURE OF METALLIC MATERIAL WITH CIRCULAR CROSS- SECTIONAL SHAPE IN OUTER PERIPHERAL PART AND ITS MANUFACTURING DEVICE
Document Type and Number:
Japanese Patent JP3309807
PROBLEM TO BE SOLVED: To provide a size-free rolling method of metallic materials in which the finished cross-sectional shape in the outer peripheral part is approximately complete roundness, the uneven diameter difference is extremely small and the cross-sectional shape in the outer peripheral part having a wide size-free region is circular and its manufacturing device.
SOLUTION: By using a four-way sizing roller as a final sizing roller, arranging each roller axis of a pair of rollers out of the opposing roller pairs mutually inclining in the opposite direction to the advancing direction of a material to be rolled, further arranging each roller axis of a pair of rollers on the other side in the opposite direction mutually to the advancing direction of the material to be rolled and moreover, inclining it in the opposite direction to the case of the roller of a pair of the different rollers, finish rolling is executed. Each roller axis of the sizing rollers may be arranged and inclined in the same direction to the advancing direction of the material to be rolled. The final sizing roller is the four-way sizing roller having a mechanism for adjusting roller rolling-down and a mechanism for arranging/inclining the roller axis.
May 24, 2002
August 04, 1998
SUMITOMO METAL IND LTD
B21B1/16; B21B19/10; B21D3/14; (IPC1-7): B21B1/16; B21B19/10; B21D3/14