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Title:
METHOD FOR GRINDING ROLLING ROLL IN UNIVERSAL MILL AND UNIVERSAL MILL
Document Type and Number:
Japanese Patent JPH11285714
Kind Code:
A
Abstract:

To simply remove on-line the burnt flaw developed at the side surface of a horizontal roll by allowing the surface of a vertical roll to contact with the side surfaces of horizontal rolls, rotating both rolls by injecting a grinding agent onto the side surface of the horizontal rolls and/or the surface of the vertical roll and grinding them.

Coolant mixing the grinding agent is injected onto the side surfaces of the horizontal rolls 11a, 11b and the surface of the vertical roll. The injection of the coolant containing the grinding agent onto each roll may be executed at the position of the inlet side nozzles 6a, 6b, 6c in the contacting positions of the horizontal rolls 11a, 11b with the vertical roll and may be further executed at the position of the outlet side nozzles 6d, 6e, too. The rotating speed is desirable to adjust so that the speed difference between the rotating speed at the position of the burnt flaw at the side surfaces of the horizontal rolls 11a, 11b and the rotating speed of the surface of the vertical roll becomes the max. The rotating speeds and the pushing force of the horizontal rolls and the vertical roll and adjusted with a mill motor and a mill rolling reduction mechanism.


Inventors:
HATANAKA ATSUSHI
OHIRA HIROYOSHI
Application Number:
JP8739998A
Publication Date:
October 19, 1999
Filing Date:
March 31, 1998
Export Citation:
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Assignee:
KAWASAKI STEEL CO
International Classes:
B24B57/02; B21B13/08; B21B28/04; B21B1/08; B21B27/10; (IPC1-7): B21B28/04; B21B13/08; B24B57/02
Attorney, Agent or Firm:
小林 英一