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Patent Searching and Data


Title:
MULTIPLE-HUMP ROLL FOR ASSER MILL
Document Type and Number:
Japanese Patent JP2002224712
Kind Code:
A
Abstract:

To provide multiple-hump rolls for Asser mills solving problems about a reduction in rolling efficiency, a variation in wall thickness, etc., due to an insufficient bulge of shells after rolling and difficulty for pulling out mandrels at rolling of heavy wall pipes that take place when a reduction of rolling pass is increased by larger roll humps.

In hump-rolls for Asser mulls, two hump sections of a roll are arranged in parallel, more specifically the humps of the roll that are working surfaces are divided into two sections, in order to reduce roll separating forces on each hump.


Inventors:
NISHIKAWA KIMISUKE
Application Number:
JP2001021903A
Publication Date:
August 13, 2002
Filing Date:
January 30, 2001
Export Citation:
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Assignee:
SANYO SPECIAL STEEL CO LTD
International Classes:
B21B19/06; (IPC1-7): B21B19/06
Attorney, Agent or Firm:
Shiina Akira