Forming method and forming stand for welded pipes

Details Forming method and forming stand for welded pipes Forming method and forming stand for welded pipes

1996-09-20

1998-01-06

Crane, Daniel C.

Metal deforming

By deflecting successively-presented portions of work during...

By use of deflector arranged to bend work transversely of...

72224, B21D 512

Patent

active

057042438

ABSTRACT:
The present invention is to provide a forming method and forming stand for forming a welded pipe of high dimensional accuracy on a welded pipe manufacturing line in which a metallic strip of a predetermined width is continuously formed by rolls and then welded, and more particularly the present invention is to provide a forming method and forming stand for forming both edge portions of the metallic strip with high accuracy. Positions of two pairs of upper and lower horizontal forming rolls or two upper horizontal forming rolls, the rolls being provided when the upper and lower horizontal rolls are divided into two with respect to the width direction of the metallic strip, can be adjusted in the width direction, and each divided upper roll can be turned and fixed on a vertical axis. Further, in order to exhibit the effect of the present invention at the maximum, the turning direction and turning angle of each upper roll is limited. When the forming stand is constructed in the above manner, the edges of the metallic strip can be appropriately formed without deteriorating the accuracy of wall thickness of the metallic strip to be formed, and further the roll can be shared when metallic strips of different pipe diameters are formed.

REFERENCES:
patent: 231146 (1880-08-01), Briggs
patent: 5142894 (1992-09-01), Gutowski

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