• 대한안전경영과학회지
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• 제18권2호
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• pp.109-118
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• 2016

IPS(Ideal Production System) is a strategic cost management establishing ideal target cost, innovating cost structure and reduction. However, IPS was commonly used in assembly industry acquiring components and using them to assemble vehicles etc. Applying IPS to steel industry is a new try and not easy because cost elements in flow manufacturing are clustered and obfuscated in a complicated way. This paper proposes ICM (Ideal Cost Management) method adaptive to steel industry. One of the biggest advantages is that ICM could classify and categorize costs in detail according to accounts and manufacturing machines. Based on ICM information, steps of extracting and maximizing ideas are followed effectively. From 2013, ICM was applied successfully to POSCO Pohang Steel Works 38 factories.

• 한국안전학회지
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• 제27권5호
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• pp.190-195
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• 2012

This study is aimed to investigate the occupational safety and health management of contractor company in the steel industry. Many companies now only carry out core functions inhouse and ancillary functions have been outsourced. This results in transferring risk to the contractor. The questionnaire survey was conducted on the suppliers and contractors of steel industry. Data were collected from 29 companies and their 240 contractor companies. From the survey result, it was found that the level of safety and health management is above the average. To strengthen the relationship for safety and health management, the supplier should provide more data and design a curriculum to train workers of contractor company. Also it is needed that the supplier company employ the person in exclusive charge to support contractor.

• 융합경영연구
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• 제6권3호
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• pp.1-9
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• 2018

Purpose - Current society is competitive society. Rules of the game is applied to every kind of aspects not only business but also academic matters. This research is to analyze competitiveness between China and USA by use of trade related data together with revealed comparative advantage index(RCA) including trade specialization index(TSI). Research design, data, methodology - Per economic phase, both China-USA have mutually complementary character. That's why it is significant to analyze this 2 country's important industry. From our economic viewpoint, Both 2 economic powers should cooperate to achieve partnership in the steel business industry under the severe business competition. Results - This paper will provide which country is more comparatively advantage in case international business is held. Especially, steel industry is in a sense technology related business. Therefore, tied-up up-to-date advanced know-how and technology should be developed to be a leader for one of major industries in the world market. Conclusion - Among those various phenomena, this paper categorizes international business and research boundary is international trade contract. It is available to find out how to cooperate securing permanent and reliable business provider and supplier is essential and eminent for the successful accomplishment in the world steel market.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2012년도 춘계학술대회 논문집
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• pp.357-358
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• 2012

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2002년도 춘계공동학술대회
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• pp.109-113
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• 2002

Steel industry is the most capital intensive and the largest energy consuming industry, which operate huge and complex facilities to supply various steel products as the primary materials to almost every manufacturing industry Major steel products are hot-rolled and cold-rolled coils, plates, and wires that are produced through molten iron making, molten steel making, casting, and rolling. Each process runs in batch between setups and the specifications or bach are different with each other High energy consuming and heavy material handling require careful synchronization or processes, as well. Considering the synchronization or processes, the lot planning and scheduling problem in the integrated steelmaking process rovers the roll grouping with given casts. the sequencing or rolls over time, and the machine assignment and time scheduling or charges and casts. The problem is investigated by dividing it into two cases whether single or parallel machines at the molten steel making and the continuous casting processes. Problem descriptions and solution approaches or each instance are introduced. To test their performance and conformity, implementation or the algorithms and numerical experiments are carried out with real world and constructed data sets.

• 한국콘텐츠학회논문지
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• 제7권6호
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• pp.195-205
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• 2007

철강 산업은 자동차, 조선, 가전, 건설 등 전체산업에 기초소재를 공급하는 국가 기간산업으로서 '산업의 쌀'이라 할 만큼 중요한 산업이며, 철강업체들이 경쟁력을 강화하기 위해서는 정확한 효율성 분석이 필수적이다. 본 논문에서는 DEA모형을 이용하여 한국 철강업체들의 효율성을 분석하였다. DEA모형 중에서 CCR 모형과 BCC 모형을 사용하였으며, 분석에 선정된 28개 철강업체들의 2005년도 효율성(CCR, BCC, 규모)과 규모수익성(RTS)을 분석하였다. 또한 분석된 자료를 바탕으로 벤치마킹의 대상을 찾기 위한 포락지도(envelopment map)와 이에 따라 효율적이 되기 위한 목표 값을 제시하였으며, 산업분류를 세분류와 세세분류로 나누어서 각 산업별로 효율성을 파악하였다.

• 한국산업융합학회 논문집
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• 제12권4호
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• pp.187-192
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• 2009

This study is performing a seismic analysis on the steel frames structure with dampers and analyzing the dynamic behavior in order to examine their efficiency and study the optimum dampers position to the seismic design steel structure. To improve the ability against an earthquake, this study performed the time history analysis. Controling an earthquake is the way to minimize the damage of the steel structure by dissipating input energy generated by an earthquake.

• Nuclear Engineering and Technology
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• 제31권6호
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• pp.561-571
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• 1999

Microstructure and mechanical properties of five Cr-Mo steels for nuclear industry applications have been investigated. Transmission electron microscopy, energy dispersive spectrometer, differential scanning calorimeter, hardness, tensile, and impact test were used to evaluate the Cr and W effect on the microstructure and mechanical properties. Microstructures of Cr-Mo steels after tempering are classified into three types : bainitic 2.25Cr-lMo steel, martensitic Mod.9Cr-lMo, HT9M, and HT9W steels, and dual phase HT9 steel. The majority of the precipitates were found to be M$_{23}$C$_{6}$ carbides. As minor phases, fine needle-like V(C,N), spherical NbC, fine needle-like Cr-rich Cr$_2$N, and Cr-rich M$_{7}$C$_3$were also found. Addition of 2wt.% W in Cr-Mo steels retarded the formation of subgrain and dissolution of Cr$_2$N precipitates. Hardness and ultimate tensile strength increased with increasing Cr content. Though Cr content of HT9W steel was lower than that of HT9 steel, the hardness of HT9W was higher due to the higher W content. W added HT9W steel had the highest ultimate tensile strength above $600^{\circ}C$. But impact toughness of W added steel (HT9W) and high Cr steel (HT9) was low.w.w.

• 품질경영학회지
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• 제28권4호
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• pp.106-118
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• 2000

We analyze the current quality management status for firms producing steel outfits of ships and develop an efficient QMS appropriate to Korean steel outfit industry. The firms recently obtained ISO 9000 certificates and are located in Pusan ${\cdot}$ Kyungnam district of Korea. The analysis is based on the audit results from ISO 9000 for seven steel outfit firms during last three years. We find out major requirements of ISO 9000 and investigate statistical relationship among major requirements, types of data, and groups of firms by using a statistical package, SAS. Recommendations regarding add-on requirements are suggested to install an efficient QMS in Korean steel outfit firms.

• 환경영향평가
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• 제7권2호
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• pp.71-82
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• 1998

This study focuses on one of the most typical energy-intensive industries, the steel industry. The two-fold purpose of the study is to develop a model to assess measures to alleviate sulfur dioxide($SO_2$) emissions from the steel industry and to propose a concrete $SO_2$ emission reduction measure from the steel industry. This study partially employed and modified AIM(Asia-Pacific Integrated Model) developed by Japan National Environmental Research Institute to develop AIM/KOREA SULFUR model for simulation. In the study, a base scenario, which is BAU(Business As Usual) scenario, and mitigation scenarios(a use of low-sulfur contain fuel, fuel conversion to cleaner energy, an induction of desulfurization systems, and energy saving) were employed. The results of the simulation are summarized below: The sulphur dioxide emission from the steel industry in 1992 was estimated to be 252,000 metric tons; however, according to BAU scenario, sulphur dioxide emission is expected to be increased to 586,000 metric tons, which is 2.3 times greater than that in 1992 by year 2020. To alleviate such increasement, simulation results under various 7scenarios proved that some degrees of reduction may be possible by an induction of desulfurization systems although there may be numerous ways to interpretate the simulation results; however, the bottom line is that it appears to be difficult to achieve the Korean Ministry of Environment's policy goal-a mitigation of sulphur dioxide concentration to 0.01ppm.