Image analysis – Applications – Manufacturing or product inspection
Reexamination Certificate
2003-12-25
2009-08-11
Kim, Charles (Department: 2624)
Image analysis
Applications
Manufacturing or product inspection
C348S086000
Reexamination Certificate
active
07574034
ABSTRACT:
There is provided a method for quantitatively evaluating properties of a graphite structure of a gray cast iron based on a number and a thick and thin degree of graphite components in the structure. In particular, only non-spherical graphite pieces having an average size of 5 μm or more are extracted from a preprocessed image of the graphite structure, and counted (Step S5of FIG.3). Further, only graphite pieces having a maximum length of 50 μm or more and less than 150 μm are selected therefrom, and a length and an area of each selected graphite piece are measured (Step S6). An area of an assumptive representative graphite piece having a maximum length (a maximum size) of 100 μm is calculated from these data, and divided by the length 100 μm, to obtain the thick and thin degree (Step S7). The thick and thin degree is shown with the number of the graphite pieces (Step S8).
REFERENCES:
patent: 4333512 (1982-06-01), Sugiura et al.
patent: 6126713 (2000-10-01), Igarashi et al.
patent: 54-150194 (1979-11-01), None
patent: 5-273200 (1993-10-01), None
patent: 11-304736 (1999-11-01), None
patent: 2000-9668 (2000-01-01), None
patent: 2002162348 (2002-06-01), None
patent: 2002-317237 (2002-10-01), None
Fairbanks et al., “The Effects of Adding Ultrasound During the Production of Nodular Cast Iron,” Ultrasonics Symposium Proceedings, IEEE, 1974, pp. 664-666.
Hideo Nakae et al., “Influence of Graphite Morphology on Fractured Surface in Flake Graphite Cst Iron Measured by Laser Roughness Meter”, Chuzo Kogaku, Japan Foundry Engineering Society, 2002, pp. 644-649, vol. 74, No. 10.
Kenji Ishimima et al., “Gazo Joho Shori System ni yoru Kinzoku Sozai no Teiryoka ni Kansuru Kenkyu (second report)” Tochigi-ken Kogyo Shiken Kenkyu Kikan Kenkyu Shuroku, Oct. 1989, vol. 1988, pp. 230-237.
Kenji Ishijima et al., “Gazo Joho Shori System ni yoru Kinzoku Sozai no Teiryoka ni Kansuru Kenkyu (first report)”, Tochigi-ken Kogyo Shiken Kenkyu Kikan Kenkyu Shuroku, Jan. 1989, vol. 1987, pp. 171-178.
Harumi Ueno, et al., “Gazo Joho Shori System ni yoru Soshiki no Teiryoka ni Kansuru Kenkyu Kinzoku, Kinzokukei Fukugo Zairyo Soshiki no Teiryoka ni Kansuru Kenkyu”, Tochigi-ken Kogyo Gijutu Center Kenkyu Hokoku, Aug. 1991, vol. 1990, pp. 51-59.
H.Y. Yuan et al., “Computer image evaluation of graphite forms in cast iron”, Int. J. Cast Metals Res., 1999, vol. 11, pp. 447-451.
Aoki Tetsuro
Ichimura Hajime
Imasaki Masanori
Masuo Kunihiro
Foley & Lardner LLP
Kim Charles
Kiriu Corporation
LandOfFree
Method for judging graphite texture in gray cast iron,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for judging graphite texture in gray cast iron,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for judging graphite texture in gray cast iron,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4120572