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Patent Searching and Data


Title:
METHOD FOR DIAGONAL PIERCING ROLLING OF TUBULAR MATERIAL AND DIAGONAL PIERCING ROLL STAND
Document Type and Number:
Japanese Patent JP08066704
Kind Code:
A
Abstract:

To provide a method for diagonal piercing rolling which is capable of averting the incorrect rolling and working hindrance of thick or thin tube stocks of an about middle extent and a diagonal piecing roll stand for this purpose.

This material to be rolled of an immediately previous tube stock end 4a is extruded under draft into the constricted part 10 of a mandrel bar 5 pushed in an axial direction, by which the thick part is formed at the material to be rolled. A mandrel bar of the diagonal piecing roll stand for diagonal piercing rolling the tube stock houses the material to be rolled within the region of the immediately previous built-up part in its rolling direction X and has the constricted part for rolling the tube stock end 4a having the thick part.


Inventors:
Moeltner, Hermann
Staat, Karlhans
Application Number:
JP1995000173692
Publication Date:
March 12, 1996
Filing Date:
July 10, 1995
Export Citation:
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Assignee:
KOCKS TECH GMBH & CO
International Classes:
B21B17/02; B21B19/06; B21B25/00; B21B17/00; B21B19/00; B21B25/00; (IPC1-7): B21B19/06