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Title:
MANUFACTURE OF CHANNEL BAR
Document Type and Number:
Japanese Patent JPH0459102
Kind Code:
A
Abstract:

PURPOSE: To manufacture a channel bar from a low deformability material at low cost by making a perpendicular cross section to the longitudinal direction into a W-shaped section regard to an intermediate product in a hot or warm rolling with a caliber.

CONSTITUTION: The intermediate product 2 is formed by performing the rolling work to a billet which is heated at a prescribed temp. with plural pairs of rolling rolls 10-12 on which a prescribed caliber 13 is formed. Subsequently, the channel bar 16 with flat end faces, mutually parallel flanges and flat web is formed with plural pairs of rolls for cold working (an hourglass roll 14 and barrel-shaped roll 15). In this way, even when it is a material which is low deformable and liable to generate the burning like titanium, the generation of surface flaws is prevented and the channel bar 16 of which the sectional shape is stable can be manufactured at low cost.


Inventors:
FURUTA OSAMU
Application Number:
JP17334790A
Publication Date:
February 26, 1992
Filing Date:
June 29, 1990
Export Citation:
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Assignee:
AICHI STEEL WORKS LTD
International Classes:
B21B1/095; B21B1/08; B21D5/08; (IPC1-7): B21B1/08; B21D5/08



 
Next Patent: JPH0459103