A GLOBAL STEEL PLAYER TRASTEEL

TRASTEEL was founded in the last quarter of 2009 as the result of a vision of a group of entrepreneurs and experienced steel professionals. The business model is based both on the international trading activity and on establishing long-lasting partnerships with selected and reliable suppliers and customers, supported eventually by equity or share capital investments into minority participations.  TRASTEEL is a multi-geographical player with major focus on China, Middle East, Europe, CIS countries, South Africa and South America. The Headquarters of the Group are based in Lugano, Switzerland, with a network of companies/local offices/agents active in Europe, South America, North America, South Africa, UAE, Russia, Turkey, Ukraine, China and Australia. During its tenth fiscal year ended in December 2018 the Company generated a consolidated turnover of approximately 535 million US dollars and employing over 120 professionals.

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GRAPHITE ELECTRODES AND CONNECTING PINS

Optimized for maximum performance and minimal consumption and offered at competitive prices, TRASTEEL graphite electrodes have the proven ability to maximize steel production capacity while reducing power and production costs. TRASTEEL products are designed to increase productivity and to maximize customer value: they are available with diameters from 100-700 mm (4-28 inches), in lengths from 1,500-2,700 mm (60-108 inches), and in various quality grades

 The consistent and high performance of TRASTEEL products is the result of stable materials.

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STABILITY

  •  Electrical Conductivity
  • Heat Resistance
  • Resistance to Thermal Shock

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ADVANTAGES

  •  Advanced Measuring Instruments to ensure the quality
  • Supply chain management
  • Stock management for fast delivery
  • State of the art manufacturing plant
  • Quick and efficient service with global sales and technical service network
  • Special packing solutions for each type of transportation and destination

SPECIFICATIONS

Nominal Diameter Min Max Available Length IEC Designation
In mm
4 100 98 103 1000
1500
69T4N
8 200 200 205 1500
1800
69T4N
10 250 251 256 1500
1800
155T3N
152T4N
12 300 303 307 1500
1800
155T3N 177T3N
177T4N 177T4L
14 350 352 357 1500
1800
2100
177T3N 215T3N
203T4N 203T4L
16 400 403 409 1500
1800
2100
215T3N 241T3N
241T3L 222T4N
222T4L
18 450 454 460 1500
1800
2100
2400
241T3N  241T3L
273T3L 241T4L
269T4L
20 500 505 511 1500
1800
2100
2400
273T3N  273T3L
269T4N  269T4N
22 550 556 562 1500
1800
2100
2400
298T3N 298T4N
298T4L
24 600 607 613 1500
1800
2100
2400
317T4N 317T4L
26 650 657 663 2700 355T4N  355T4L

TYPICAL PROPERTIES

GRAPHITE ELECTRODES
Apparent Density Specific Electrical Resistance Flexural Strength Elastic Modulus Coefficient of Thermal Expansion Ash Content
g/cm3 µ0m Mpa Gpa µm/K-m %
HP 1.64 – 1.68 5.4 – 5.6 9.0 – 12.0 8.5 – 11.5 1.2 – 1.6 0,2
SHP 1.68 – 1.72 4.9 – 5.2 9.0 – 12.0 8.5 – 12.0 1.1 – 1.4 0,2
UHP 1.70 – 1.74 4.8 – 4.5 9.0 – 12.0 8.5 – 13.5 08. – 1.2 0,2

 

NIPPLES
Apparent Density Specific Electrical Resistance Flexural Strength Elastic Modulus Coefficient of Thermal Expansion Ash Content
g/cm3 µ0m Mpa Gpa µm/K-m %
HP 1.68 – 1.72 3.40 – 3.70 19.0 – 23.0 11.5 – 17.0 1.0 – 1.4 0,2
SHP 1.80 – 1.84 3.20 – 3.50 20.5 – 24.5 12.5 – 18.5 0.9 – 1.2 0,2
UHP 1.82 – 1.86 3.00 – 3.30 20.5 – 24.5 12.5 – 18.5 0.8 – 1.2 0,2

TECHNICAL ASSISTANCE AND OPTIMIZATION OF ELECTRODES APPLICATIONS

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TRASTEEL technical team provides complete assistance and consulting in order to maximize the results of its products. Its services go beyond a simple product-related service, as listed below:

  • Detailed practical and theoretical studies related to the electric arc furnaces and their operations
  • Monitoring and optimization of operational, mechanical and electrical variables which affect the performances of the electric arc furnaces
  • Calculation of productivity increase
  • Furnace start-up assistance
  • Furnace Regulation
  • Hydraulics
  • Evaluation of power supply system
  • Evaluation of transformer performance

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  • Evaluation of load current and current balance between phases
  • Optimization of melting efficiency
  • Optimization of graphite electrodes consumption
  • Customized Reporting
  • Interaction with customer’s data – PLC
  • Inspection of accessories

ELECTRODES REGULATION SYSTEM

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TRASTEEL offers a digital electrode regulation system to better optimize the material usage. The Digital Electrode regulation system uses state-of-the-art microprocessor technology and VME bus to achieve a real-time regulation loop. The TDRH system is typically used on furnaces that operate by hydraulic movement of the electrode arms.

The TRASTEEL system is a digital regulator that utilizes the latest automation technology and is typically installed on furnaces that operate by electro-mechanical drives (winch system) of the electrode arms.

Electrode regulation benefits include:

  • Reduced electrode consumption
  • Reduction of electrode breakage
  • Increase in average power during heats
  • Lower energy consumption
  • Increase production output
  • Reduction of furnace operating costs
  • Reduction of maintenance expenditures
  • Decrease downtime

INSTRUMENTS

  • Chauvin Arnoux CA8253 advanced network analyzer also used to Italian Power Suppliers, IEC 61000-4-30 class A, IEC 61000-3-6, IEC 61000-4-7
  • Circuitor AR5 network analyzer
  • Advanced arc stability monitor

STEEL MAKING REFRACTORIES

 TRASTEEL owns an important stake in one of the major Chinese Producer of Magnesia-Carbon and Alumina-Magnesia Carbon refractory bricks. The established Joint Venture is incorporated under the name of “Yingkou Liangyu – Trasteel Refractory Co. Ltd.”. TRASTEEL is acting as the exclusive marketing arm of the Joint Venture on all activities related to overseas marketing, sales, production financing and technology advancement. The Chinese Partner, Liaoning Liangyu Synthetic Refractory Co. Ltd, has conferred to the Joint Venture their equipment and facilities. The production facilities are located in Dashiqiao City, Liaoning, a province in China close to the highest quality raw material sources for refractory production and major transportation.

The New Joint Venture integrates production and research facilities and is able to produce, with a capacity of about 70’000 MT/year, the following range of products:

  • Magnesia Carbon bricks for converters, electric arc furnaces and ladles
  • Magnesia Alumina Carbon bricks
  • Alumina Silicon Carbide bricks
  • Fired Magnesia and fired Magnesia Chrome Bricks
  • Fired Magnesia Spinel bricks
  • Sliding Gate Plates and Nozzles for Tundish and Ladle flow control
  • Various unshaped products for lining installations and maintenance of steel making units

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REFRACTORY MATERIAL FOR EAF

  1. Slag line lining
  2. Slag line lining
  3. Lower side wall lining
  4. Permanent lining
  5. Hearth ramming
  6. EBT system
  7. Purging system

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REFRACTORY MATERIAL FOR TORPEDO CAR

  1. Slag line
  2. Impact zone
  3. Metal zone
  4. Mouth
  5. Charging hole
  6. Safety lining

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REFRACTORY MATERIAL FOR BOF

  1. Lower cone
  2. Purging plugs
  3. Bottom
  4. Slag line
  5. Safety lining
  6. Tap hole reinforcement
  7. Upper cone 8. Mouth
  8. Scrap impact are

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REFRACTORY MATERIAL FOR STEEL LADLE

  1. Impact bottom reinforcement
  2. Bottom
  3. Purging system
  4. Sidewall
  5. Slag zone
  6. Freeboard
  7. Safety lining – Slag area
  8. Slide gate system
  9. Safety lining – Sidewall and bottom area

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REFRACTORY MATERIAL FOR RH DEGASSER

  1. Insulation lining
  2. Snorkel
  3. Lower tank
  4. Upper tank
  5. Syphon
  6. Dome
  7. Safety lining

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REFRACTORY MATERIAL CONTINUOUS CASTING

  1. Monoblock Stopper
  2. Ladle Shroud
  3. SES
  4. SEN
  5. Tundish Nozzle

REFRACTORY MATERIAL INGOT CASTING

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Runner Refractories with %45- 75 Al2O3

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RAW MATERIALS

TRASTEEL is working for 10 years with some of the major raw materials producers worldwide with a particular focus on China and South Africa. The growing leadership position gained by TRASTEEL is the result of years of effort and investments, R&D carried out by its technical experts and especially the stability of the supply even in difficult and tough market conditions.

PRODUCT LIST

CAUSTIC CALCINED MAGNESIA
DEAD BURNT MAGNESIA
FUSED MAGNESIA ONE AND DOUBLE STEP
FUSED AND SINTERED SPINEL
ROTARY AND SHAFT KILN BAUXITE
BROWN FUSED ALUMINA
WHITE FUSED ALUMINA
TABULAR ALUMINA
CALCINED ALUMINA

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MULLITE
CHAMOTTE
SILICON CARBIDE
FLAKE GRAPHITE
AMORPHOUS GRAPHITE
EXPANDABLE GRAPHITE
CALCIUM SILICATE
CALCIUM ALUMINATE
FLUORSPAR
WOLLASTONITE
CHROMITE SAND

For more info about TRASTEEL company and products please visit www.trasteel.com