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Title:
DELIVERY METHOD OF HOT-ROLLED COIL AND METHOD AND APPARATUS FOR PICKLING HOT-ROLLED STEEL STRIP
Document Type and Number:
Japanese Patent JP2010188389
Kind Code:
A
Abstract:

To provide a delivery method of a hot-rolled coil preventing the occurrence of fluting when delivering a hot-rolled steel strip from a hot-rolled coil of a pay-off reel, and to provide a pickling method and a pickling apparatus achieving the inexpensive and highly efficient descaling in a pickling line for performing the descaling of the hot-rolled steel strip by using the delivery method while maintaining the excellent surface quality.

The temperature of a mandrel of the pay-off reel is raised, a hot-rolled coil mounted on the pay-off reel is heated from its inside diameter part side to deliver the hot-rolled steel strip at the temperature of ≥250°C over the entire length of the hot-rolled steel strip of the coil. Further, in the pickling, the hot-rolled steel strip delivered at a temperature of ≥250°C over the entire length of the hot-rolled steel strip is fed to a pickling tank, and subjected to the pickling treatment. The mandrel of the pay-off reel of the pickling apparatus has a heating means.

COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
UENO MASAYASU
Application Number:
JP2009036230A
Publication Date:
September 02, 2010
Filing Date:
February 19, 2009
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
B21C47/28; B21B45/06; B21C47/18; C23G3/02
Attorney, Agent or Firm:
Masaki Okui
Satoru Matsumoto