Title:
DEVICE FOR DETERMINING MATERIAL QUALITY OF STEEL MATERIAL AND METHOD FOR DETERMINING MATERIAL QUALITY OF STEEL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2011/061972
Kind Code:
A1
Abstract:
Disclosed are a device and a method for determining material quality of a steel material capable of stably and accurately discriminating between steel materials composed of high-strength steel to which additives for improving the strength of the steel are added and those composed of ordinary steel to which the additives are not added. Specifically, a device (1) for determining material quality of a steel material detects spark pixels from captured color images (2) of sparks (19) produced when a steel material (18) is rubbed, detects pixels of which density of one of color components for discrimination selected from RGB components is low from the spark pixels as low-density pixels, determines that the steel material is composed of the high-strength steel when a ratio of the total number of the low-density pixels to the total number of the spark pixels is more than or equal to a threshold for discrimination, and determines that the steel material is composed of the ordinary steel when the ratio is less than the threshold for discrimination.
Inventors:
NAKATA TAKEO (JP)
IKEDA MASAMI (JP)
SAKAMOTO MAKOTO (JP)
FUJIWARA KENJI (JP)
UCHIDA KAZUHIRO (JP)
IKEDA MASAMI (JP)
SAKAMOTO MAKOTO (JP)
FUJIWARA KENJI (JP)
UCHIDA KAZUHIRO (JP)
Application Number:
PCT/JP2010/062761
Publication Date:
May 26, 2011
Filing Date:
July 29, 2010
Export Citation:
Assignee:
SUMITOMO METAL IND (JP)
NAKATA TAKEO (JP)
IKEDA MASAMI (JP)
SAKAMOTO MAKOTO (JP)
FUJIWARA KENJI (JP)
UCHIDA KAZUHIRO (JP)
NAKATA TAKEO (JP)
IKEDA MASAMI (JP)
SAKAMOTO MAKOTO (JP)
FUJIWARA KENJI (JP)
UCHIDA KAZUHIRO (JP)
International Classes:
G01N21/70
Foreign References:
| JPH07294438A | 1995-11-10 | |||
| JPH02132350A | 1990-05-21 | |||
| JPH08178834A | 1996-07-12 | |||
| JPH07294439A | 1995-11-10 | |||
| JP3482265B2 | 2003-12-22 |
Other References:
"Japanese Industrial Standard, Method of Spark Test for Steels, JIS G 0566", JAPANESE STANDARDS ASSOCIATION, 5 January 1980 (1980-01-05), XP008140613
Attorney, Agent or Firm:
OHNAKA Minoru (JP)
Minoru Onaka (JP)
Minoru Onaka (JP)
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