公开(公告)号：US20150316508A1

公开(公告)日：2015-11-05

申请号：US14652086

申请日：2013-12-23

申请人： POSCO

发明人： Ju-Seung LEE ,  Sang-Woo CHOI ,  Se-Ho CHOI ,  Jong-Pil YUN ,  Ho-Moon BAE

IPC分类号： G01N27/82

CPC分类号： G01N27/82 ,  B21B38/00 ,  G01N27/83

摘要： An apparatus for detecting inner defects of a steel plate comprises an all-defect detection unit for detecting all defects including surface defects present on the surface of the steel plate and inner defects present inside the steel plate by intensity of leakage flux, measured by generating magnetic flux in a strike direction of the steel plate; a surface defect detection unit for detecting surface defects by intensity of leakage flux, measured by generating magnetic flux in the thickness direction of the steel plate, for a predetermined detection region including all the defects detected by the all-defect detection unit; and a data processing unit for detecting only inner defects present in a detection region by excluding the detected surface defects from all the defects detected by the all-defect detection unit, for the detection region, thereby detecting only the inner defects of the steel plate.

摘要翻译： 一种用于检测钢板内部缺陷的装置，包括：全缺陷检测单元，用于检测钢板表面存在的表面缺陷的所有缺陷，以及通过产生磁性测量的漏磁通强度的钢板内部缺陷 钢板冲击方向的焊剂; 表面缺陷检测单元，用于通过产生包括由全缺陷检测单元检测的全部缺陷的预定检测区域来检测在钢板的厚度方向上产生磁通量而得到的漏磁通强度的表面缺陷; 以及数据处理单元，用于检测检测区域中仅存在于检测区域中的内部缺陷，通过将检测到的表面缺陷从全缺陷检测单元检测到的缺陷中排除出来，从而仅检测钢板的内部缺陷。

公开(公告)号：US20190003986A1

公开(公告)日：2019-01-03

申请号：US16063992

申请日：2016-12-19

申请人： POSCO

发明人： Ho-Moon BAE

IPC分类号： G01N21/894 ,  B21B38/00 ,  G01N21/88

摘要： A detection device and a detection method for detecting a hole or a pinhole present in a material are provided. The detection device includes: an illumination unit irradiating light at one side of the material; a light receiving unit acquiring an image of the material at the other side of the material to output a detection signal; a detection unit determining whether or not the hole or the pinhole is present in the material using the detection signal; and an illumination control unit dividing the illumination unit into a plurality of regions and controlling the illumination unit to irradiate light having different intensities of illumination for each of the plurality of regions.

公开(公告)号：US20160313285A1

公开(公告)日：2016-10-27

申请号：US15102506

申请日：2013-12-24

申请人： POSCO

发明人： Ju-Seung LEE ,  Chang-Hyun PARK ,  Geon SHIN ,  Sang-Woo CHOI ,  Shin-Hwan KANG ,  Ho-Moon BAE ,  Ki-Jang OH

IPC分类号： G01N27/82

CPC分类号： G01N27/82

摘要： An aspect of the present disclosure may provide a defect detection apparatus and method for a steel plate, in which a defect in a steel plate may be detected, and particularly, only an inner defect in the steel plate may be detected, even with a relatively low amplification rate.

摘要翻译： 本公开的一个方面可以提供一种用于钢板的缺陷检测装置和方法，其中可以检测钢板中的缺陷，并且特别地，即使相对地也可以检测到钢板中的内部缺陷 低放大率。