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Title:
LASER EMISSION SPECTROPHOTOMETRY OPTICAL DEVICE, LASER EMISSION SPECTROPHOTOMETER, LASER EMISSION SPECTROPHOTOMETRY METHOD, AND MOLTEN METAL PLATING FACILITY
Document Type and Number:
WIPO Patent Application WO/2023/176939
Kind Code:
A1
Abstract:
[Problem] To realize light weight, small size, and sufficient analysis accuracy. [Solution] This laser emission spectrophotometry optical device includes: a housing unit including a laser oscillator that oscillates laser light, one condenser lens that condenses the laser light and on which the laser light emitted from the laser oscillator is directly incident, and an optical fiber light receiving part that receives, on a light receiving end surface, emitted light radiated from plasma generated by radiating the laser light onto molten metal, and that guides the light to an exit-side end surface; and a cylindrical probe that is connected to the housing unit such that a center shaft is parallel to an oscillation axis of the laser light in the laser oscillator, that supplies inert gas toward an opening end positioned on a downstream side of the traveling direction of the laser light, and that guides the laser light to the opening end to radiate the laser light onto the molten metal. A surface normal direction at the light receiving end surface of the optical fiber light receiving part is parallel to the oscillation axis of the laser light.

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Inventors:
TSUJI NORIHIRO (JP)
AIMOTO MICHIHIRO (JP)
AOKI TOMONORI (JP)
NISHIMURA HIDEKI (JP)
Application Number:
PCT/JP2023/010393
Publication Date:
September 21, 2023
Filing Date:
March 16, 2023
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C2/06; G01N21/71
Domestic Patent References:
WO2020239239A12020-12-03
WO2003006967A12003-01-23
Foreign References:
JP2008215851A2008-09-18
JPH09157823A1997-06-17
JP2007514941A2007-06-07
JPH07234211A1995-09-05
JPS51119332A1976-10-19
JPH0815152A1996-01-19
JP2016522416A2016-07-28
CN205581003U2016-09-14
KR20110011359U2011-12-07
Attorney, Agent or Firm:
HAGIWARA, Yasushi et al. (JP)
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