Title:
鋼の炭素濃度の計測方法、計測装置、及び計測プログラム
Document Type and Number:
Japanese Patent JP6656970
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable concentration of carbon element in a steel to be locally and quantitatively measured.SOLUTION: A measurement method for carbon concentration in steel comprises: irradiating a surface of a steel with a laser beam to remove the surface of the steel up to a depth equivalent to surface roughness of the steel (S1); irradiating a position where the surface is removed with a pulse laser beam and integrating each of an emission spectrum of an emission wavelength of carbon element and an emission spectrum of an emission wavelength of iron element from the pulse laser beam to calculate an emission strength of carbon and also calculate an emission strength of iron (S2, S3); and allocating a ratio of the emission strength of carbon and the emission strength of iron into a relation expression between a predetermined ratio of the emission strength of carbon and the emission strength of iron and carbon concentration (S4) to acquire carbon concentration of the steel (S5).SELECTED DRAWING: Figure 1
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Inventors:
Shuzo Eto
Application Number:
JP2016057272A
Publication Date:
March 04, 2020
Filing Date:
March 22, 2016
Export Citation:
Assignee:
Central Research Institute of Electric Power Industry
International Classes:
G01N33/2022; G01N21/71
Domestic Patent References:
| JP7128237A | ||||
| JP2012068144A | ||||
| JP63168287A |
Foreign References:
| US20120029836 | ||||
| US5537206 |
Attorney, Agent or Firm:
Kazumi Murase