Furnace Control Cabinet for Electric Arc Furnace (EAF)/Ladle Refining Furnace (LRF)

Core Functions

1. Power & Electrode Control
   
   
   • Arc Striking Regulation: Automatically controls electrode lifting/lowering via servo or hydraulic systems to stabilize arc length, avoid electrode sticking or breakage, and maintain optimal arc voltage/current for energy-saving smelting.
   • Power Adjustment: Matches furnace capacity and smelting stages (melting, refining, tapping) to adjust input power, realizing constant power or constant current control.
   • Phase Balance Control: Balances three-phase current to reduce grid impact and improve power factor.
   
   
2. Process Monitoring & Automation
   
   
   • Real-time Data Acquisition: Monitors key parameters (electrode current/voltage, furnace temperature, cooling water flow/pressure, gas composition) and displays them on a touchscreen HMI.
   • Programmable Logic Control (PLC): Supports customized smelting process programming (e.g., automatic charging, temperature holding, tapping sequence) to reduce manual operation errors.
   • Data Storage & Traceability: Records smelting process data (duration, power consumption, temperature curve) for production analysis and quality traceability.
   
   
3. Safety Protection & Alarm
   
   
   • Overload/Short-Circuit Protection: Triggers power-off protection when current exceeds rated value or short circuit occurs, preventing damage to power cables and furnace components.
   • Cooling System Fault Protection: Alarms and shuts down the system if cooling water pressure is too low, flow is insufficient, or temperature is too high (critical for water-cooled components like cables and furnace covers).
   • Electrode Position Limit Protection: Prevents electrode over-lifting or over-lowering to avoid mechanical collision.
   • Emergency Stop Function: Equips with local and remote emergency stop buttons for immediate shutdown in case of accidents.
   
   
4. Communication & Integration
   
   
   • Supports MODBUS, PROFIBUS, Ethernet protocols to connect with factory MES/ERP systems, realizing remote monitoring and centralized management.
   • Interfaces with auxiliary equipment (dust removal systems, water treatment units, electrode regulators) for coordinated operation.
   
   

Structural Design

Technical Parameters

Application Advantages

1. Intelligent Operation: HMI touchscreen with visualized smelting curves enables one-key start/stop of processes, reducing the threshold for operator training.
2. Energy Efficiency Optimization: Dynamic adjustment of electrode parameters reduces power consumption by 8–15% compared to manual control, shortening smelting cycles by 10–20%.
3. Strong Anti-Interference: Isolated power supply and shielded wiring design effectively resist electromagnetic interference from high-current arcs, ensuring stable operation in harsh industrial environments.
4. Easy Maintenance: Modular component design allows quick replacement of faulty parts; self-diagnosis function locates faults in real time, reducing maintenance downtime.