-
公开(公告)号：KR20180009792A
公开(公告)日：2018-01-29
申请号：KR20177036964
申请日：2016-06-22
Applicant: JFE STEEL CORP
Inventor： ONO HIROAKI , TATE MASAMI , OSHIGE TAKAHIKO , KODAMA TOSHIFUMI , KOSHIHARA TAKAHIRO , OGAWA AKIHIRO , IIZUKA YUKINORI
IPC: G01N21/88 , G01N21/89 , G01N21/892 , G01N21/956
CPC classification number: G01N21/892
Abstract: 본발명에따른표면결함검출장치는, 강재의표면결함을광학적으로검출하는표면결함검출장치로서, 2개이상의변별가능한광원을이용하여동일한검사대상부위에상이한방향으로부터조명광을조사하는조사수단과, 각조명광의반사광에의한화상을취득하고, 취득한화상간에서차분처리를행함으로써검사대상부위에있어서의표면결함을검출하는검출수단을구비하고, 광학계가소정의조건을만족하고있는것을특징으로한다. 이에따라, 스케일이나무해모양과표면결함을정밀도좋게변별할수 있다.
Abstract translation: 根据本发明的表面缺陷检测装置光学地检测钢材中的表面缺陷，所述表面缺陷检测装置的特征在于具有照射装置，该照射装置使用至少两个可微分光源将照明光照射到相同的检测目标部位 以及检测装置，其通过获取由每个照明光的反射光产生的图像并且在所获取的图像之间执行差分处理来检测检测目标部位处的表面缺陷，并且进一步的特征在于光学系统满足 预定条件。 结果，可以准确地将表面缺陷与标尺/未受损伤的图案区分开来。
-
公开(公告)号：KR20180009791A
公开(公告)日：2018-01-29
申请号：KR20177036862
申请日：2016-06-22
Applicant: JFE STEEL CORP
Inventor： ONO HIROAKI , TATE MASAMI , OSHIGE TAKAHIKO , KODAMA TOSHIFUMI , KOSHIHARA TAKAHIRO , OGAWA AKIHIRO , IIZUKA YUKINORI
IPC: G01N21/88 , G01N21/89 , G01N21/892 , G01N21/956
CPC classification number: G01N21/892
Abstract: 본발명에따른표면결함검출방법은, 강재의표면결함을광학적으로검출하는표면결함검출방법으로서, 2개이상의변별가능한광원을이용하여동일한검사대상부위에상이한방향으로부터조명광을조사하는조사스텝과, 각조명광의반사광에의한화상을취득하고, 취득한화상간에서차분처리를행함으로써검사대상부위에있어서의표면결함을검출하는검출스텝을포함하고, 검사대상부위에대한각 광원의조명광의입사각이 60°이상 82.5°이하의범위내에있는것을특징으로한다.
Abstract translation: 根据本发明的表面缺陷检测方法是用于光学检测钢材中的表面缺陷的方法，所述表面缺陷检测方法的特征在于具有照射步骤，其中使用至少两个可微分光源来照射照明 从相互不同的方向对同一检测对象部位照射光;以及检测步骤，取得由各照明光的反射光生成的图像，并对所取得的图像进行差分处理，由此检测检测对象部位的表面缺陷， 其特征在于，来自各光源的照明光相对于检测对象部位的入射角度在60°〜82.5°的范围内。
-
公开(公告)号：CA2626026C
公开(公告)日：2016-06-28
申请号：CA2626026
申请日：2006-11-21
Applicant: JFE STEEL CORP
Inventor： IIZUKA YUKINORI
Abstract: Disclosed are an ultrasonic testing system and an ultrasonic testing technique for a pipe member capable of detecting minute flaws of several hundreds of microns or less located at positions in the wall thickness inside portion of a welded portion of a seam-welded pipe and the like without omission and further easily setting optimum conditions when the size of the pipe is changed. A transmitting beam, which is focused to the welded portion at an oblique angle, is transmitted using a part of the group of transducer elements of a linear array probe as a group of transducer elements for transmission, a receiving beam, which is focused at the focusing position of the transmitting beam at an oblique angle, is formed using the transducer elements of a portion different from the above group of transducer elements for transmission as a group of transducer elements for reception, and a flaw echo is received from the welded portion.
-
公开(公告)号：CA2679297C
公开(公告)日：2015-08-11
申请号：CA2679297
申请日：2007-05-18
Applicant: JFE STEEL CORP
Inventor： IIZUKA YUKINORI , KENMOCHI KAZUHITO , YOKOYAMA HIROYASU , INOUE TOMOHIRO , SAKASHITA SHIGETO
Abstract: According to the present invention, penetrators can be adequately determined as flaws. In particular, a welded zone 2 of a pipe 1 is subjected to ultrasonic flaw detection at least in a pipe axial direction, and the quality of the pipe is evaluated using observed values in units of a predetermined area in a pipe thickness direction and the pipe axial direction. The length of one side of the predetermined area is an ultrasound beam width or more and a pipe thickness or less. The quality of the pipe can be evaluated while shifting the predetermined area in the pipe axial direction by using an average value of the observed values within the predetermined area. The length of one side of the predetermined area can be made an ultrasound beam width or more and a pipe thickness or less.
-
公开(公告)号：CA2934796A1
公开(公告)日：2015-07-02
申请号：CA2934796
申请日：2014-12-24
Applicant: JFE STEEL CORP
Inventor： ONO HIROAKI , KODAMA TOSHIFUMI , KOSHIHARA TAKAHIRO , OGAWA AKIHIRO , IIZUKA YUKINORI
IPC: G01N21/892
Abstract: This surface defect detection method is for optically detecting a surface defect of a steel pipe (P), and includes an irradiation step for irradiating illumination light beams (L) from different directions onto the same region under inspection on a steel pipe (P) using two distinguishable light sources (2a, 2b) and a detection step for acquiring images of the reflected light of the light beams (L) and detecting a surface defect on the region under inspection by carrying out subtraction processing using the acquired images. As a result, it is possible to accurately distinguish scales and benign patterns from surface defects.
-
Patent Agency Ranking
公开(公告)号：DE60143116D1
公开(公告)日：2010-11-04
申请号：DE60143116
申请日：2001-11-29
Applicant: JFE STEEL CORP
Inventor： IIZUKA YUKINORI , AWAJIYA YUTAKA , NAKADA MASAYUKI , SUZUKI MAKOTO , TSUTSUMI KOICHI
-
公开(公告)号：DE69938407D1
公开(公告)日：2008-05-08
申请号：DE69938407
申请日：1999-08-11
Applicant: JFE STEEL CORP
Inventor： HASHIMOTO TATSUYA , IIZUKA YUKINORI , MATSUFUJI YASUHIRO , SHIMIZU TAKEO
-
公开(公告)号：CA3013438A1
公开(公告)日：2015-07-02
申请号：CA3013438
申请日：2014-12-24
Applicant: JFE STEEL CORP
Inventor： ONO HIROAKI , KODAMA TOSHIFUMI , KOSHIHARA TAKAHIRO , OGAWA AKIHIRO , IIZUKA YUKINORI
Abstract: A surface defect detecting method is a surface defect detecting method of optically detecting a surface defect of a steel pipe P, and includes an irradiation step of irradiating the same examination target part with illumination light beams L from different directions by using two distinguishable light sources 2a and 2b, and a detection step of obtaining images by reflected light beams of the respective illumination light beams L and detecting a surface defect in the examination target part by executing subtraction processing between the obtained images. Thereby, the surface defect is able to be accurately distinguished from scale or a harmless pattern.
-
公开(公告)号：AT482039T
公开(公告)日：2010-10-15
申请号：AT01274217
申请日：2001-11-29
Applicant: JFE STEEL CORP
Inventor： IIZUKA YUKINORI , AWAJIYA YUTAKA , NAKADA MASAYUKI , SUZUKI MAKOTO , TSUTSUMI KOICHI
Abstract: A manufacturing method for a continuously cast product of steel comprising the steps of: detecting a position of crater end of product by using a method for measuring a solidification state of continuously cast product by a sensor arranged so as to be in non-contact with said product; and controlling at least one condition selected from the conditions of the casting speed and the quantity of secondary cooling water based on said detected position of crater end, said method for measuring a solidification state of continuously cast product comprising the steps of: transmitting transverse waves of burst-like electromagnetic ultrasonic waves, in which at least one selected from frequency, amplitude, and phase is modulated within a pulse width that has a magnitude of 50 to 150 % of the maximum time width not exceeding a time of flight for propagating in said product, to said product as a transmitting signal; receiving a signal after said transmitting signal propagates in said product as a receiving signal; and judging the solidification state of said product by performing correlation operation of said receiving signal by using a reference signal of a waveform that is the same as or similar to said transmitting signal.
-
公开(公告)号：CA2679297A1
公开(公告)日：2008-09-04
申请号：CA2679297
申请日：2007-05-18
Applicant: JFE STEEL CORP
Inventor： INOUE TOMOHIRO , SAKASHITA SHIGETO , KENMOCHI KAZUHITO , IIZUKA YUKINORI , YOKOYAMA HIROYASU
Abstract: Defect judgment of a penetrator can be made precisely. Ultrasonic flaw de tection of a welded portion (2) of a tubular body (1) is performed at least in the axial direction of the tube, and the quality of the tubular body is e valuated using the measurement values in units of predetermined area in the thickness direction and the axial direction of tube. Length of one side of t he predetermined area is set longer than the ultrasonic beam size but shorte r than the tube thickness and, while shifting the predetermined area in the axial direction or the thickness direction of the tube, the quality of the t ubular body can be evaluated using the average measurement value in the pred etermined area. Length of one side of the predetermined area may be set long er than the width of ultrasonic beam but shorter than the tube thickness.
-
-
-
-
-
-
-
-
-
Search Results
69
records
(took 0.025 seconds)
