Title:
METHOD FOR JOINING SHEET BAR DURING CONTINUOUS HOT ROLLING
Document Type and Number:
WIPO Patent Application WO/2013/051232
Kind Code:
A1
Abstract:
Provided is a method for joining a sheet bar capable of substantially reducing the frequency of a sheet bar breaking during hot continuous rolling. A method for joining a sheet bar, in which the tail end of a preceding sheet bar and the distal end of a succeeding sheet bar are clamped at the entry side of a hot-finishing rolling machine, induction heating is performed while upsetting is started, and after the target upsetting amount is reached the clamp is opened, wherein the hold time after upsetting, which is the time from after the target upsetting amount is reached until the clamp is opened, is made to be 25% to 60% of the joining total time, which is the time from the start of upsetting until the clamp is opened.
Inventors:
MORI KAZUYA (JP)
Application Number:
PCT/JP2012/006282
Publication Date:
April 11, 2013
Filing Date:
October 01, 2012
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21B15/00; B21B1/26; B23K13/01; B23K20/00; C22C38/00; C22C38/06; C22C38/50
Foreign References:
| JPS60244401A | 1985-12-04 | |||
| JPH08155504A | 1996-06-18 | |||
| JP2005118886A | 2005-05-12 | |||
| JP2002047536A | 2002-02-15 |
Attorney, Agent or Firm:
KUMASAKA, Akira et al. (JP)
Akira Kumasaka (JP)
Akira Kumasaka (JP)
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Claims: