• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.29 no.2
• /
• pp.43-50
• /
• 2006

본 연구에서는 철강 제조 공정에서 발생하는 생산 계획 문제를 설명하고 해결 방법을 제시한다. 철강 제품 중에서도 판재류(냉연, 아연도, 석도, 칼라 제품)를 생산하는 공정으로 연구 범위를 제한하고 적용하는 부분은 철강 공정의 스케줄링 분야를 배제한 생산 계획 분야만을 대상으로 한다. 특히, 철강 제조 공정의 생산 계획 문제들 중에서 가장 중요하게 고려되는 원료 충당 문제, 용량 할당 문제, Batched Annealing Furnace(BAF) 설비 운영 문제를 중심으로 설명하고, 이 문제점들을 해결하기 위한 방안을 제시한다. 또한, 제시된 방법을 특정의 툴에 적용하여 생산 계획 시스템을 구축하고 효과를 설명한다.

• 기계와재료
• /
• v.22 no.2
• /
• pp.60-69
• /
• 2010

고분해능의 첨단 재료분석 장비들의 발달로 인해 철강재료 연구에서도 마이크로, 나노 단위 이하에서의 재료거동 해석 등 새로운 개념의 연구가 진행되고 있다. 특히 전자현미경과 연계한 이미지 기반 나노 물성 측정과 예측 기술은 주로 구조용 재료로 사용되는 철강 재료에서도 결정립 단위의 미세 물성 및 거동을 정밀 분석 가능하게 하여, 이를 통해 재료 전체의 물성까지도 예측할 수 있게 되었다. 이와 같은 물성과 신뢰성 예측 능력 향상은 최종 제품의 품질 제고와 효율적인 제조 공정으로의 개선을 유도하기에, 첨단 분석 장비의 적극적인 활용은 철강 산업에서 큰 역할을 하고 있다. 이에 본 고에서는 여러 가지 재료 분석 장비를 통합적으로 연계 활용하여 다양한 용도의 철강 재료에 대해 그 미세 거동 및 미세물성을 측정, 분석한 연구들에 대해 소개한다.

• The Journal of the Korea Contents Association
• /
• v.7 no.6
• /
• pp.195-205
• /
• 2007

The steel industry plays an important role in the entire Korean Economy. However, little empirical research has analyzed the efficiency of steel companies. The purpose of this paper is to measure and analyze their efficiency using DEA models. We evaluate the CCR and BCC efficiency and the return to scale of 28 Korean steel companies. We also provide their envelopment map and the projection, which are valuable information for inefficient companies to find benchmarking companies and to improve their efficiency.

• International Commerce and Information Review
• /
• v.19 no.3
• /
• pp.83-105
• /
• 2017

I tried to analyze export relation of influence in Chinese H beam(common steel), Hot Rolled Steel(common steel), Plate(common steel) which could be influenced immediately by China's cancellation of the export rebate of value added tax in 2010 through the statistic methods such as cointegration, Granger causality, impulse response and variance decomposition. In the first period they mutually influenced each other in export to Korea but in the second period, this relation of influence was lessoned. Due to production expansion of Hot Rolled Steel(common steel), Plate(common steel) in Korea, the change of import trend, the market change of steel users' industries and China's expedient export of boron steel to Korea, mutual influence among these products was greatly declined. Ever since Hyundai Steel's production expansion involving blast furnace facilities, there is need for the industry to concentrate on developing new markets for its facilities' output in Korea. Therefore, Korea's steel industry desperately needs strength of de-jure standards such as unique quality standards and related certifications, efficient distribution management, as well as export promotion strategy through its global trading network to effectively address its structural supply-demand imbalances.

• Korea Trade Review
• /
• v.48 no.4
• /
• pp.209-232
• /
• 2023

This study aims to estimate the export performance factors of Korean Steel Products to the EU and the expected changes in exports according to the CBAM(Carbon Border Adjustment Mechanism). the factors influencing the export performance of Korean Steel Products to the EU were analyzed using a Gravity Model, and the expected export amount in the case of a Carbon Tax was calculated assuming that the CBAM would be implemented in 2026, As a result, it was empirically analyzed that economic growth, population growth, exchange rate and manufacturing production index of each EU country have a positive effect on exports in Korea, and it was analyzed that the effects of the single market and system due to the EU's economic community were also helpful in increasing exports but the Carbon Tax is imposed in 2026, reducing Korea's steel exports by about -3.6% to -5.7%

• Journal of the KSME
• /
• v.51 no.11
• /
• pp.42-44
• /
• 2011

이 글에서는 철강재료의 생산공정 및 사용 중 수소취화에 의해 발생하는 현상과 방지대책에 대하여 소개하고자 한다.

• Proceedings of the KGS Conference
• /
• 2006.06a
• /
• pp.57-58
• /
• 2006

• Proceedings of the Korean Institute of Resources Recycling Conference
• /
• 1998.10a
• /
• pp.17-163
• /
• 1998

• Analytical Science and Technology
• /
• v.27 no.6
• /
• pp.352-356
• /
• 2014

Various studies have been done to improve the properties of the steel by adding boron to the steel. Some studies have reported on the analysis of the boron in steel by AAS (atomic absorption spectrometry), ICP-OES(inductively coupled plasma-optical emission spectrometry), ICP-MS (inductively coupled plasma/mass spectrometry). The volatile loss of boron of steel in sample digestion and the separation procedure for avoiding matrix effect by high concentration of iron are difficulties for determination of boron in steel. The method to determine boron in steel by ICP-MS was developed without volatilization of boron in sample digestion step with $HNO_3-NH_4HF_2$ digestion method, and the additional separation process for avoiding matrix effect. Complete decomposition of steel with $HNO_3-NH_4HF_2$ digestion method, and boron determination by ICP-MS in the matrix of high concentration of iron were possible. Quantitative recoveries of boron in certified standard steel by new method in this study were 103 to 111%, and the relative standard deviation is less than 5%. The method detection limit was $1.17{\mu}g/g$.

• Journal of Korea Society of Industrial Information Systems
• /
• v.14 no.4
• /
• pp.143-152
• /
• 2009

This paper deals with a case which is focused on the policy development connected with IT, and verify its validity to enhance R&D capability for Korean steel industry. Korean steel industry, which is at a turning point from technological catch-up to technological frontier, should go ahead with open R&D system to be able to connect with other steel companies, universities and laboratories for its capability buildup. To meet such a challenge, IT should act a critical part in R&D capability enhancement. In this study we discuss not only IT-related support policies and validity of proposed policies through priority analysis, but also the role of government, company and academia within the framework of Triple Helix.