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Patent Searching and Data


Title:
MILL FOR EXPANDING/ROLLING SEAMLESS TUBE AND METHOD THEREFOR
Document Type and Number:
Japanese Patent JPH07214114
Kind Code:
A
Abstract:

PURPOSE: To improve the dimensional accuracy of tube at the time of rolling a thin large-diameter tube having small wall-thickness to outside diameter ratio and to avoid the fin flowing due to the flaring of a stock tube.

CONSTITUTION: In an expanding/rolling mill 10 provided with a pair of conical rolling rolls 81, 82, the mill has guide shoes 84 which are made so as to be tiltable to the rolling direction of a tube and the variation of shoe clearance by this tilting is set so that the variation on the outlet side of the mill is larger than the variation in the gorge part of the rolling roll.


Inventors:
Shimizu, Tetsuo
Yorifuji, Akira
Toyooka, Takaaki
Application Number:
JP1994000034265
Publication Date:
August 15, 1995
Filing Date:
February 08, 1994
Export Citation:
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Assignee:
KAWASAKI STEEL CORP
International Classes:
B21B19/06; B21B19/08; (IPC1-7): B21B19/06; B21B19/08