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:
Jan. 06, 2015
Filed:
Aug. 23, 2011
Yoshifumi Kobayashi, Tokyo, JP;
Yasunori Ito, Tokyo, JP;
Kazuyuki Kawano, Tokyo, JP;
Takashi Yaekura, Tokyo, JP;
Yoshifumi Kobayashi, Tokyo, JP;
Yasunori Ito, Tokyo, JP;
Kazuyuki Kawano, Tokyo, JP;
Takashi Yaekura, Tokyo, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
In a cooling a galvanized steel sheet (W), change in emissivity of a surface of the galvanized steel sheet (W) is measured in a temperature range lower than the boiling point of zinc but not lower than the ferrite transformation temperature, using an emissivity sensor () with an observation wavelength of 1.4 μm or longer, and pressing and quenching in a pressing and quenching apparatus () is started after completion of an alloying reaction has been detected based on the change in emissivity. The emissivity sensor () preferably has an InGaAs element or a thermopile as a measuring element.