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{"title":"Short-Net for Electric Arc Furnaces","imgUrl":"https:\/\/img.chinax.com\/nimg\/b8\/fa\/a7a49781393b61e4f470427eeeb3-200x200-1\/short_net_for_electric_arc_furnaces.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"Electric arc furnace accessories remote control system","imgUrl":"https:\/\/img.chinax.com\/nimg\/76\/9a\/8f80a73e7cf3c01b0957a39d61d7-200x200-1\/electric_arc_furnace_accessories_remote_control_system.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Remote control system","Certification":"ISO9001","Place of Origin":"Shaanxi, China"}}
{"title":"Copper Busbar for Electric Arc Furnaces","imgUrl":"https:\/\/img.chinax.com\/nimg\/e7\/1b\/be6ccd4e86cd40b2923f13723c34-200x200-1\/copper_busbar_for_electric_arc_furnaces.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"Various models of DC furnace power supply system - DC power supply","imgUrl":"https:\/\/img.chinax.com\/nimg\/2d\/e5\/60795924f872cfb08cd5fa6ef9c9-200x200-1\/various_models_of_dc_furnace_power_supply_system_dc_power_supply.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"ISO9001 Approved Conductive Cross Arm for Electric Arc Furnace Manufactured","imgUrl":"https:\/\/img.chinax.com\/nimg\/6a\/50\/1f335b79368af84c48e2e5da42dd-200x200-1\/iso9001_approved_conductive_cross_arm_for_electric_arc_furnace_manufactured.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Conductive Cross Arm of Electric Arc Furnace","Certification":"ISO9001","Place of Origin":"Shaanxi, China"}}
As a core high-current conduction component in the main circuit of electric arc furnaces (EAF), the short network undertakes the critical task of transmitting electrical energy from the secondary side of the transformer to the electrodes. Its performance directly impacts the smelting efficiency, energy consumption, and operational stability of the EAF. Below is a detailed product introduction:
1. Core Definition & Key Functions
Definition: The short network refers to the general term for secondary conductors from the low-voltage outlet terminal of the EAF transformer to the end of the graphite electrode. In practical applications, it often specifically refers to the line section from the compensator to the water-cooled cable, divided into busbar-type and copper tube-type. Among them, the water-cooled copper tube type has become the mainstream development direction due to its copper material saving and excellent cooling effect.
Key Functions: It not only serves as an electrical energy transmission channel but also controls the symmetrical distribution of electric arcs, improving arc stability and energy density to concentrate thermal effects. Meanwhile, it can withstand the short-term extreme thermal load of electrodes, ensuring the EAF stably generates high temperatures for scrap melting and other operations. Additionally, a reasonable short network design can balance the three-phase reactance and reduce energy consumption.
2. Core Components
Component
Function Description
Compensator
Mostly air-cooled or water-cooled, connecting the transformer outlet to the conductive copper tube. It compensates for length expansion and contraction caused by temperature changes, ensuring connection stability.
Conductive Copper Tube/Busbar
Core conductive component. Each phase is usually equipped with 2-4 U-shaped tubes. The section connected to the transformer is arranged according to the transformer outlet form, and the section connected to the water-cooled cable is mostly arranged in an equilateral triangle. The copper tube type can cooperate with the water cooling system to reduce its own temperature.
Water-Cooled Cable
A special water-through cable connecting the conductive copper tube to the conductive cross arm. Models such as SLDL series are adapted to EAFs of different capacities, meeting the conductive and cooling requirements of dynamic and static connection parts.
Stainless Steel Bracket & Insulator
The bracket is made of non-magnetic stainless steel to avoid electromagnetic loss. It is matched with phenolic glass cloth plate insulators, and the conductors are fixed with stainless steel bolts to ensure electrical insulation and mechanical support.
Forged Copper Shoe
Can be connected in series with the short network to form a closed cooling water circuit, while strengthening the conductive connection between the electrode and the short network, improving current conduction efficiency.
3. Key Technical Parameters
The parameters of short networks for EAFs of different capacities vary significantly. Below are reference values for some mainstream specifications:
Rated EAF Capacity
Rated Transformer Capacity
Secondary Current
Electrode Diameter
Water-Cooled Cable Model
Impedance Unbalance Factor
6t
3.15MVA
9920A
300mm
SLDL2400
≤5%
12t
5MVA
14400A
350mm
SLDL3600
≤5%
15t
6.3MVA
16788A
350mm
SLDL4000
≤5%
20t
16MVA
36344A
400mm
SLDL4400
≤5%
4. Product Features
High-Current Adaptability: Capable of carrying ultra-large currents of tens of thousands of amperes. With the water cooling system, the current density is several times higher than that of traditional structures, while the self-weight is significantly reduced, adapting to the high-intensity smelting power supply requirements of EAFs.
Low-Loss Design: The copper tube and copper shoe are connected in series to form a closed-loop cooling water circuit, quickly dissipating heat from the conductor and reducing electrical energy loss caused by high temperatures. Some flat reactor-type short networks reduce mutual inductance electromotive force and conductor resistance by optimizing electrode arrangement, further saving electrical energy.
Harsh Environment Resistance: Components are made of high-temperature and corrosion-resistant materials, enabling stable operation in the high-temperature and high-conductive dust environment during EAF smelting. The structural design also considers mechanical strength to resist vibration and impact during smelting.
Strong Compatibility: Can be customized with corresponding structures and parameters according to different equipment types such as EAFs and submerged arc furnaces, as well as different smelting scenarios such as nickel-iron furnaces and industrial silicon furnaces, with strong adaptability.
5. Application Scenarios
Widely used in metallurgy and related industrial fields, such as scrap secondary refining in EAF steelmaking, melt flow control in the casting industry to ensure casting quality, and various metal smelting operations in metal processing. It is also suitable for submerged arc furnaces, calcium carbide furnaces, yellow phosphorus furnaces and other equipment, used in the smelting production of nickel-iron, ferrosilicon, calcium carbide and other products.
Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall... Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall...
