Posco

Choong Soo Lim

Hyeong Jun Huh

Sung Joon Kwak

Jong-Tae Park

Seong-Cheol Hong

Oh-Yeoul Kwon

Won-Gul Lee

Myung Sik Chun

Gyoo-Taek Lee

Boong Ho Son

Sang Ho Park

A grain-oriented electrical steel plate of an exemplary embodiment of the present invention has a groove formed on a surface, wherein a curvature radius RBb at a position where a depth of the groove is maximum is 0.2 &#x3bc;m to 100 &#x3bc;m, and a curvature radius RSb on the groove surface from the position where the depth of the groove is maximum to a quarter-way position of the depth D of the groove is 4 &#x3bc;m to 130 &#x3bc;m.

Grain-oriented electrical steel plate and manufacturing method thereof

A dimension measuring device includes: a rail for moving two sheets of material; a plurality of range finders arranged at a preset interval along a direction of traveling of the material, so as to measure a distance from side surfaces of the material; and an imaging device for taking images between the first and second range finders, which are disposed at the first and second locations with reference to the entry side of the material, respectively.

Dimension measuring device and method

A side trimming apparatus including a cutting unit which is installed on at least one side of a steel plate being transferred and trims a side of the steel plate by mechanical cutting and a laser processing unit which is installed in front of the cutting unit and emits a laser beam to a portion of the steel plate to be cut to form a groove at the portion to be cut or preheat the portion to be cut, and a side trimming method using the same are provided.

Apparatus and method for trimming a side of steel plate

An apparatus and a method for ultrasonic detection are provided. The apparatus includes an injection nozzle which is installed below a steel plate being transported and forms a medium column by jet a medium toward the steel plate, an ultrasonic probe which is installed in the injection nozzle and transmits and receives ultrasonic waves for detecting flaws in the steel plate through the medium column, and a medium circulation unit which reclaims the medium which falls from the medium column and circulates the reclaimed medium to the injection nozzle.

Apparatus and method for ultrasonic detection to detect flaws of steel plate

Growing community of inventors

Pohang-si, South Korea

Choong Soo Lim