Graphite Electrodes - SGL Group

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Technical Competence and Services for Your Steelmaking Process

Graphite Electrodes

Broad Base. Best Solutions.

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Carbon is Future. SGL Group – The Carbon Company.

Carbon has unique properties. It is indispensable in the production of steel, aluminum and solar energy systems. Carbon increases the performance of wind turbines and reduces the weight of airplanes, cars and sports equipment.

Carbon substitutes other materials and contributes to a reduction in CO2 emissions.

SGL Group is one of the leading manufacturers of carbonbased products and has the broadest product and technology portfolio, a global sales network and state-of-the-art production sites in Europe, North America and Asia.

Graphite & Carbon Electrodes The Business Unit Graphite and Carbon Electrodes (BU GCE) manufactures regular-sized and supersized ultra high-power graphite electrodes for the production of steel in electric arc furnaces, and the world’s largest carbon electrodes for use in smelting applications such as silicon and phosphorus. We deliver continuous and sustainable value for our customers. Maintaining the high quality of our products and services is part of our core philosophy and is sustained by an all-encompassing application of the Six Sigma methodology. BU GCE is managed by an international team of managers, empowering our people across national borders and legal entities to shorten decision making processes, enabling quick responses to changing customer requirements. We strive to be the electrode supplier of choice with customized solutions from our broad product, service and technology portfolio.

Optimized Electrode Application Competences and Services

AC furnace at DEW Witten/Germany

Competence to optimize your graphite electrode application SGL Group provides a global network of experts for the steelmaking process. Our expertise is in all services around graphite electrodes. Working with our experts and specialists means innovative ap- Our services plication of product and process know-how, with What we offer goes far beyond “standard” producta focus on delivering statistically-valid results. related services. Our services are tailored to each The vast collection of experience within our team customer’s specific situation and need, and can means that solutions and ideas are always found. encompass: We know all EAF applications in the world, having delivered electrodes to more than 2000 EAFs in P Product monitoring P Performance analysis 80 countries.­ P Inventory control P On-site storage management P Inspection of accessories P Monitoring of electric arc furnaces P Customized reporting (interaction with customer’s data - PLCs) P Tailormade data analysis

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Customized Reporting Identifying Problems Beforehand

Customized reporting

CEDIS® as EAF performance monitoring system

Each meltshop wants to monitor parameters CEDIS – or Customized EAF Data Information System – records EAF specific to its process. Our team members carry production and control data directly from customer PLC systems for out on-site measurements and deliver reports and off-site analysis. Data is only transmitted with the customers' consent, analysis in return. The reports are customized – and data confidentiality is maintained at all times. in easily understandable formats – to meet each customer’s individual requirements. Alarm and Improvement detection tool warning limits can be allocated and visually Our experts analyse CEDIS data systematically to find potentials for process optimization, and make recommendations for improvement flagged in these reports. projects to customers. Graphs and reports created from CEDIS data can be very helpful for visualizing long-term trends in process parameters.

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Online monitoring for DC-EAFs

Professional use of methodologies and tools

SGL Group offers an online DC-EAF performance monitoring system to make visible all important and critical parameters that control the performance and efficiency of the DC-EAF process. The results are analyzed to define actions for further improvements.

Six Sigma as a leading tool for efficiency investigation Process improvement teams use Six Sigma methodology to look for effective ways to improve process efficiency. The application of statistical methods provides opportunities to find inefficiencies and deviations in the process. The tools also help to avoid misleading directions of research and investigation. Such a project is always a cooperative effort between SGL Group’s service team and our customer.

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EAF Process Improvements Increasing Furnace Productivity

Technical expertise for process improvements requires a comprehensive toolbox together with the expertise and know-how, of our service professionals, accumulated over many years of working with EAFs. If performance or consumption improvements are required, or a­n electrical or mechanical problem needs to be solved, our EAF fine-tuning projects can help resolve problems.

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We offer experienced professionals using specialist tools A wide range of tools is available to improve the EAF melting process: P Consumption

model – to check theoretical and real consumption data P Calculation of productivity increase P Recommendations for EAF design and operational questions

P Furnace

start-up assistance energy modeling P Regulation tuning P Hydraulics P Power (melting) profiles P Electrical

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Seminars and Practical Training Increasing People Productivity

Electrode care and handling Graphite electrodes are sensitive and need to be handled carefully. The same care should also be taken with mechanical and electrical jointing equipment. Proper handling and treatment are absolutely necessary to achieve high performance results in the process. SGL Group offers training and seminars to help you achieve this: P Accessory

handling training integrity check P Jointing improvement P On-site storage management P Inventory management P Training and workshops P Support on all EAF-relevant improvement questions P Equipment

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Process know-how Our professionals have a broad and deep knowledge of the steelmaking process. They are trained to use a set of advanced tools for analysis of an existing process. Our people are dedicated and well-equipped to find ways to help our customers improve their EAF productivity / efficiency. on customer request projects P Tools and methodologies P Six Sigma methodology P Advanced data analysis P Statistics

Graphite electrodes made by SGL Group Our graphite electrodes are made by people who have a deep understanding of the process and product. With the use of state-of-the-art machinery in modern production locations on three continents, we aim for the highest quality standards and reliability of supply expected by our customers.

P Workshops P Customer

With rigorous application of Six Sigma methodology and tools, we strive for ever better efficiencies and consistency in order to deliver the best electrodes for our customers.

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SGL PRO Know-how for Your Benefit

PRO stands for PROfessional and for PROject. Under SGL PRO we form special partnerships with our prime customers to gain better results. Highly qualified and experienced SGL Group personnel employ Six Sigma techniques along with the customer’s own experience to find solutions applicable to the unique situation of the particular customer. Our goal is to achieve a win-win situation. We believe that a project has only been successful if our customer is totally satisfied with the improvements achieved on completion of the project.

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SGL PRO projects cover not only electrodes but also everything around the EAF process. Successful projects carried out so far have related to topics such as: P Higher efficiency P Lower energy consumption P Productivity increases P Carbon / oxygen injection P Chemical energy optimization P Foamy slag

Partnership Concepts Value-added Services

Value-added services Our services not only include electrode handling care but cover much more – such as analysis of process deviations and recommended actions for process improvement. Common target topics for investigation are reduction of specific energy consumption, electrode consumption, and tap-to-tap times. The direct benefits of this for the melting process are improvement of performance and consumption, with consequent cost savings or cost avoidance. This forms the basis for a partnership concept with our customers.

Total Cost of Ownership (TCO) We view SGL Group as much more than just an electrode supplier. Our service professionals provide ongoing support for customers’ process improvements and reduction of process variability, based on mutually agreed projects with defined targets and cost impacts. Everything around the electrode, and more. SGL Group is proud of its long record of success in the steelmaking industry as a partner in process improvements.

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Contact Graphite Electrodes and Services SGL CARBON GmbH Werner-von-Siemens-Straße 18 86405 Meitingen/Germany Phone +49 8271 83-1565 Fax +49 8271 83-1749 [email protected] SGL CARBON LLC 10130 Perimeter Parkway Suite 500 Charlotte, NC 28216-2442/USA Phone +1 800 828-6601 [email protected] SGL CARBON Sdn Bhd No 11, Jalan Graphite 1 Kawasan Perindustrian Bandar Mahkota Banting 42700 Banting, Kuala Langat Selangor Darul Ehsan, Malaysia Phone +60 3 3182-3182 [email protected]

® registered trademark of SGL Group companies­­­­

03 2012/ 1 E Printed in Germany

This document is based on our best current knowledge and is intended to provide information on specific properties of our products and their applications. The above data have been obtained under laboratory conditions by employing the test methods described. This information should not, therefore, be taken as guaranteeing specific properties or the suitability of the product for a specific application under working conditions unknown to us. In particular, the specific data should not be taken as a warranty for the durability or performance of a product in the stated application. SGL Group cannot assume any liability in respect thereof. Any existing intellectual property rights must be observed.

Performance Products SGL CARBON GmbH Söhnleinstraße 8 65201 Wiesbaden/Germany www.sglgroup.com