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레이저 테일러드 블랭크 용접 품질 모니터링 시스템 개발
박현성,이세헌 한국레이저가공학회 2000 한국레이저가공학회지 Vol.3 No.2
On the laser weld production line, a slight alteration of the welding condition produces many defects. The defects are monitored in real time, in order to prevent continuous occurrence of defects, reduce the loss of material, and guarantee good quality. The measurement system is produced by using three photo-diodes for detection of the plasma and spatter signal in CO₂laser welding. For high speed CO₂laser welding, laser tailored welded blanks for example, on-line weld quality monitoring system was developed by using fuzzy multi-feature pattern recognition. Weld qualities were classified optimal teat input, a little low heat input, low heat input, and focus misalignment, and final weld quality were classified good and bad.
미래 철강산업 주도권 결정 유인과 한국 철강산업의 주도권 확보 가능성
박현성 포스코경영연구소 2003 POSRI경영경제연구 Vol.3 No.1
향후 세계 철강산업은 공급과잉의 지속과 철강기업의 M&A 추진, 고객 요구의 다양화와 엄격화, 혁신 철강기술의 상용화 등에 직면할 것이다. 이러한 환경하에서 주도권을 확보하기 위해서는 무엇보다 원가경쟁력과 혁신기술 개발 능력, 고객의 품질 및 서비스에 대한 요구의 충족 등 새로운 경쟁 요소의 확보가 필요하다. 이러한 고나점에서 21세기 한국의 주도권은 한층 강화될 가능성이 크다. 그것은 주도기업인 POSCP의 원가경쟁력과 잠재적인 고급강의 기술개발 능력 등 때문이다. 향후 한국 철강산업은 일본에 버금가는 품질과 서비스 제공능력을 확보하고 환경 친화적 경영을 전개함으로써 21세기 주도권 확보를 위한 기반을 구축해야 할 것이다. Currently the factors that have important implications for the world leadership in the steel industry in the near future are as follows : First, over-capacity is expected to last for some time. Second, the M&A trend of the steel industry that was visible in the late 1990's will continue. Third, consumer needs will become more diverse and stringent. Fourth, new technologies like Corex and Strip Casting will emerge. To obtain leadership in the steel industry under those environmental changes, a firm must be equipped with cost competitiveness, the ability to preoccupy innovative technologies, the ability to meet the quality and service requirements of customers. and so on. In this respect, leadership in the steel industry in the 21st century is likely to be first taken by Korea. In Korea, POSCO, the leading steel company, is equipped with the basic competitive factors such as cost competitiveness and state-of-the-art technologies. Also it is expected that the technology gap between Korea and Japan in the area of high-end products will narrow. As the Korean steel industry increasingly narrows the gap with the Japanese steel industry in the area of quality, service and environment-friendly management, Korea's leadership is expected to strengthen.