Copper Busbar for Electric Arc Furnaces

Product Specification

2.1 Core Definition & Key Functions

• Definition: Made of high-purity electrolytic copper, the rectangular conductive conductor is formed by bending and splicing. Divided into ordinary and silver/tin-plated types, it is widely used in fixed connections of EAF secondary circuits.
• Key Functions: Transmits electrical energy stably from the transformer to electrodes. Reduces resistance loss and electromagnetic interference through optimized design. Provides mechanical support for other short network components.

2.2 Core Composition & Material Characteristics

2.2.1 Material Selection

• Adopts T2/T3 high-purity electrolytic copper with copper content ≥99.9% and conductivity ≥97%IACS.
• Surface can be silver-plated (≥0.1mm) or tin-plated (≥0.05mm) to enhance oxidation and corrosion resistance.

2.2.2 Structural Design

• Rectangular cross-section with common specifications: 50×5mm, 60×6mm, 80×8mm, 100×10mm, etc., customizable for special sizes.
• Key connections use drilling and tapping processes with stainless steel bolts. Some busbars have heat dissipation grooves to improve cooling efficiency.

2.3 Key Technical Parameters

2.4 Product Features

• High Conductivity: Low resistivity reduces heat loss and EAF energy consumption.
• Strong Mechanical Performance: Tensile strength ≥205MPa, withstanding vibration and impact during smelting.
• Excellent Heat & Corrosion Resistance: Adapts to high-temperature and dusty working environments.
• Customizable Adaptability: Tailorable size, length, and surface treatment for different EAF specifications.
• Easy Installation: Rectangular structure facilitates splicing and fixing, improving construction efficiency.

2.5 Application Scenarios

• Mainly used in EAF short network systems as fixed conductors for steelmaking and refining EAFs.
• Connects transformer low-voltage outlets, compensators, and conductive cross arms, suitable for metallurgy, casting, and metal processing industries.
• Applicable to conductive circuits of other high-current metallurgical equipment such as submerged arc furnaces and calcium carbide furnaces.

  2.6 Core Composition & Material Characteristics

  2.6.1 Material Selection

  • Adopts T2/T3 high-purity electrolytic copper with copper content ≥99.9% and conductivity ≥97%IACS, ensuring excellent electrical conductivity and reducing energy loss during current transmission.
  • The surface can be silver-plated or tin-plated as required, with silver plating thickness ≥0.1mm and tin plating thickness ≥0.05mm, improving oxidation and corrosion resistance and extending service life.

  2.6.2 Structural Design

  • The cross-sectional shape is mainly rectangular, with common specifications (width × thickness) including 50×5mm, 60×6mm, 80×8mm, 100×10mm, etc. Special sizes can be customized according to the EAF capacity.
  • Key connection parts adopt drilling and tapping processes, fixed with stainless steel bolts to ensure tight connection and reduce contact resistance. Some copper busbars are provided with heat dissipation grooves on the surface to improve heat dissipation efficiency.

  2.7 Key Technical Parameters

  Rated EAF Capacity	Copper Busbar Specification (Width×Thickness)	Rated Current	Conductivity	Tensile Strength	Heat Resistance Temperature	Surface Treatment Method
  5-10t	60×6mm/80×8mm	5000-10000A	≥97%IACS	≥205MPa	≤250℃	Tin-plated/Natural
  10-20t	80×8mm/100×10mm	10000-20000A	≥97%IACS	≥205MPa	≤250℃	Tin-plated/Silver-plated
  20-50t	100×10mm/120×12mm	20000-35000A	≥97%IACS	≥205MPa	≤250℃	Silver-plated
  Above 50t	120×12mm and above	Above 35000A	≥97%IACS	≥205MPa	≤250℃	Silver-plated

  2.8Product Features

  • High Electrical Conductivity: High-purity electrolytic copper material ensures low resistivity, with conductivity far exceeding that of ordinary copper alloys, which can reduce heat loss during current transmission and lower EAF energy consumption.
  • Strong Mechanical Performance: After cold working and heat treatment processes, the tensile strength is ≥205MPa and the yield strength is ≥60MPa, with good bending and shearing performance, capable of withstanding vibration and mechanical impact during EAF smelting.
  • Excellent Heat and Corrosion Resistance: Copper itself has certain heat resistance, and the surface coating can effectively resist high-temperature oxidation and conductive dust corrosion, adapting to the harsh high-temperature and dusty working environment of EAFs.
  • Customized Adaptability: Can customize size, length and surface treatment process according to EAF capacity and short network arrangement, adapting to the installation and use needs of different specifications of EAFs.
  • Easy Installation: The rectangular structure is convenient for splicing and fixing, and the connection parts are reasonably designed, which can quickly complete the assembly with transformers, water-cooled cables and other components, improving construction efficiency.