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:
Nov. 09, 1993
Filed:
Dec. 18, 1992
Akira Inagaki, Sakai, JP;
Masao Kurokawa, Sakai, JP;
Hiroyuki Hasegawa, Sakai, JP;
Toshihiro Ishibashi, Kitakyushu, JP;
Hiroaki Hadano, Kitakyoshu, JP;
Takeshi Hioki, Kitakyushu, JP;
Yoshimi Toriyama, Kitakyushu, JP;
Kazuo Fujita, Sakai, JP;
Yasushi Takeshima, Sakai, JP;
Teruyuki Wakatsuki, Sakai, JP;
Yasushi Horiuchi, Sakai, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
An apparatus for cooling thin-webbed H-beam steel includes means for forcibly spray cooling the flanges of the H-beam in intermediate and final hot rolling zones. The cooling is based upon tracking information with respect to predetermined positions along the length of the H-beam. A plurality of flow quantity control blocks are disposed in parallel with each having a three way valve having a water supply side port, a nozzle side port, and a water drain port. A plurality of on-off valves connect the nozzle side port to nozzles in a nozzle group to select nozzles based upon the flange width of the H-beam. A variable throttle mechanism maintains pressure loss at the water drain side equal to pressure loss at the nozzle side. Switching of the three way valve of one flow quantity control block can be carried out without affecting other flow quantity control blocks.