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1. (WO2018105652) METHOD FOR EVALUATING VOLUME OF SLAG ON SURFACE OF MOLTEN METAL
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Pub. No.: WO/2018/105652 International Application No.: PCT/JP2017/043809
Publication Date: 14.06.2018 International Filing Date: 06.12.2017
IPC:
G01B 11/06 (2006.01) ,B22D 37/00 (2006.01) ,B22D 43/00 (2006.01) ,C21B 3/04 (2006.01) ,F27D 21/00 (2006.01) ,F27D 21/02 (2006.01) ,G01F 17/00 (2006.01) ,G01N 33/20 (2006.01)
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11
Measuring arrangements characterised by the use of optical means
02
for measuring length, width, or thickness
06
for measuring thickness
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
D
CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
37
Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
D
CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
43
Mechanical cleaning, e.g. skimming of molten metals
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
B
MANUFACTURE OF IRON OR STEEL
3
General features in the manufacture of pig-iron
04
Recovery of by-products, e.g. slag
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
21
Arrangement of monitoring devices; Arrangements of safety devices
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
21
Arrangement of monitoring devices; Arrangements of safety devices
02
Observation or illuminating devices
G PHYSICS
01
MEASURING; TESTING
F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
17
Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33
Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
20
Metals
Applicants:
日本製鉄株式会社 NIPPON STEEL CORPORATION [JP/JP]; 東京都千代田区丸の内二丁目6番1号 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071, JP
Inventors:
楠 智行 KUSUNOKI Tomoyuki; JP
宮▲崎▼ 貴大 MIYAZAKI Takahiro; JP
Agent:
棚井 澄雄 TANAI Sumio; JP
寺本 光生 TERAMOTO Mitsuo; JP
勝俣 智夫 KATSUMATA Tomoo; JP
山口 洋 YAMAGUCHI Yoh; JP
Priority Data:
2016-23693606.12.2016JP
Title (EN) METHOD FOR EVALUATING VOLUME OF SLAG ON SURFACE OF MOLTEN METAL
(FR) PROCÉDÉ D'ÉVALUATION DU VOLUME DE SCORIES SUR UNE SURFACE DE MÉTAL FONDU
(JA) 溶融金属表面のスラグ体積評価方法
Abstract:
(EN) This method for evaluating the volume of slag on the surface of molten metal includes: a preparation step of measuring the thickness of a plurality of pieces of slag having mutually different thicknesses, floating on the surface of molten metal in a container, and calculating the value of a density parameter having a correlation with the densities of pixels regions, in a captured image of the molten metal surface in the container, corresponding to the plurality of pieces of slag, in order to calculate in advance an approximate curve representing a correspondence relationship between the slag thickness and the density parameter; and a slag volume calculating step of calculating the volume of slag by calculating and integrating the slag thickness for each pixel on the basis of the density parameter for each pixel forming a captured image obtained by capturing an image of the molten metal surface to be evaluated, and on the basis of the approximate curve.
(FR) La présente invention concerne un procédé d'évaluation du volume de scories sur la surface de métal fondu qui consiste : en une étape de préparation destinée à mesurer l'épaisseur d'une pluralité de morceaux de scories ayant des épaisseurs mutuellement différentes, flottant à la surface de métal fondu dans un récipient, et à calculer la valeur d'un paramètre de densité ayant une corrélation avec les densités de zones de pixels, dans une image capturée de la surface de métal fondu dans le récipient, correspondant à la pluralité de morceaux de scories, afin de calculer à l'avance une courbe approximative représentant une relation de correspondance entre l'épaisseur de scories et le paramètre de densité; et en une étape de calcul du volume de scories destinée à calculer le volume de scories en calculant et en intégrant l'épaisseur de scories pour chaque pixel sur la base du paramètre de densité pour chaque pixel formant une image capturée obtenue en capturant une image de la surface de métal fondu à évaluer, et sur la base de la courbe approximative.
(JA) この溶融金属表面のスラグ体積評価方法は、容器内の溶融金属の表面に浮上している、互いに厚みの異なる複数のスラグの厚みを測定すると共に、前記容器内の湯面の撮像画像における、前記複数のスラグに対応する画素領域の濃度に相関を有する濃度パラメータの値を算出することで、スラグの厚みと前記濃度パラメータとの対応関係を示す近似曲線を予め算出する準備工程と;評価対象とする湯面を撮像して得られた撮像画像を構成する各画素の前記濃度パラメータの値と、前記近似曲線とに基づき、前記画素毎にスラグの厚みを算出して積算することで、スラグの体積を算出するスラグ体積算出工程と;を有する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)