DETECTION METHOD AND DETECTION EQUIPMENT FOR SLAB SURFACE DEFECT AND EQUIPMENT ABNORMALITY IN CONTINUOUS CASTING MACHINE

• Main Authors: TANAKA HIDESHIGE, MATSUOKA KATSUAKI, MARUYAMA MASATO, YAMAUCHI TAKASHI, TANAKA TAKANORI
• Format: Patent
• Language: English; Japanese
• Published: 07.02.2019
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

To provide a detection method for slab surface defects and equipment abnormality, in a continuous casting step for a steel, capable of detecting slab surface defects caused by bleeding and/or capable of detecting the equipment abnormality of the mold or secondary cooling zone of continuous casting equipment causing the generation of slab surface defects caused by bleeding.SOLUTION: Provided is a detection method for slab surface defects and equipment abnormality in a continuous casting machine where the transverse section of a slab 15 cut by a slab cutting machine 19 provided at the outlet side of a continuous casting machine 1 is filmed by an optical filming apparatus 20, the cross-sectional shape of the slab transverse section is obtained from a filmed image, and, based on the obtained cross-sectional shape, slab surface defects and/or the equipment abnormality of at least either the mold and secondary cooling zone of the continuous casting machine is detected.SELECTED DRAWING: Figure 1 【課題】 鋼の連続鋳造工程において、ブリードに起因する鋳片表面欠陥を精度良く検知することができ、及び／または、ブリードに起因する鋳片表面欠陥の発生原因となる連続鋳造設備の鋳型または二次冷却帯の設備異常を検知することのできる、鋳片表面欠陥及び設備異常の検知方法を提供する。【解決手段】 本発明に係る連続鋳造機における鋳片表面欠陥及び設備異常の検知方法は、連続鋳造機１の出側に設けられた鋳片切断機１９で切断された鋳片１５の横断面を光学式撮影装置２０によって撮影し、撮影された画像から鋳片横断面の断面形状を求め、求めた断面形状に基づいて、鋳片の表面欠陥、及び／または、連続鋳造機の鋳型及び二次冷却帯のうちの少なくとも一方の設備異常を検知する。【選択図】 図１