The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
Aug. 21, 2000
Tooru Akashi, Futtsu, JP;
Yasumitsu Kondou, Futtsu, JP;
Shuuichi Hamausu, Futtsu, JP;
Masao Sakashita, Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
Suppression and removal of scales are efficiently carried out in a steel material hot rolling process and the time of pickling treatment as a successive step is greatly shortened. In a water cooling step of metallic material at a temperature of 100° to 1,200° C., scales are removed by applying a direct current or an alternating current to metallic material at 0.1 to 10 A/m of unit surface area from pinch rolls to rolls or apron guides on the outlet side of a hot rolling mill and/or by injecting cooling water at a pH value of −2 to 4 onto the metallic material from cooling headers and apron guides