PLC Control Ladle Refining Furnace (LRF) 10T–160T for Steel Making

1. Product Overview

2. Working Principle

1. Adjust molten steel temperature to target casting range
2. Deep desulfurization and removal of oxide inclusions
3. Accurately fine-tune all alloy element contents
4. Eliminate temperature difference between upper and lower liquid steel
   
   
   Whole refining process parameters (power, electrode position, argon flow, feeding weight) are automatically collected and controlled by PLC.

3. Complete Equipment Composition

3.1 Main Mechanical Frame

• Furnace body gantry, electrode lifting upright column, cross arm, electrode holding clamps
• Ladle transport trolley, ladle tilting prevention device, bottom argon blowing seat
• Water-cooled furnace cover, smoke hood for dust collection

3.2 Power Supply & Short Network System

• Special refining furnace transformer, high-low voltage power distribution cabinet
• Low-impedance copper short net, conductive copper tube, water cooling conductive system
• Reactive power compensation device to improve power factor and reduce power consumption

3.3 Hydraulic Drive System

• Hydraulic station for electrode lifting, furnace cover opening/closing, ladle positioning
• Accurate proportional valve control, stable electrode lifting speed, anti-break electrode protection

3.4 Automatic Batching & Feeding System

• Multi-bin storage silos for lime, fluorite, carbon powder, various alloy materials
• PLC automatic weighing, quantitative feeding, sealed chute to ladle

3.5 PLC Intelligent Central Control System (Core Feature)

• Touch screen HMI human-machine interface, real-time display of current, voltage, temperature, refining time, argon flow, feeding quantity
• Automatic arc length adjustment, constant power refining mode, multi-group refining recipe storage for different steel grades
• Over-current, over-voltage, water shortage, electrode breakage, furnace cover misalignment interlock protection
• Data recording, production report export, remote monitoring function optional

3.6 Auxiliary Supporting System

• Closed circulation cooling water station for electrode clamp & furnace cover
• Bag dust removal system for flue gas capture
• Argon pipeline pressure regulating station for bottom bubbling stirring

4. Core Equipment Advantages

1. Full PLC automatic control, one-click switching of refining process for different steel grades, less manual operation, stable refining quality.
2. Wide tonnage range: 10T / 15T / 20T / 30T / 40T / 50T / 60T / 80T / 100T / 120T / 160T, matching mini, medium and large steel plants.
3. Fast heating speed, high thermal efficiency, low unit power consumption for heating molten steel.
4. Excellent metallurgical effect: ultra-low sulfur molten steel production, high inclusion removal rate, uniform steel composition.
5. Closed dust collection design, low smoke emission, meet global environmental protection standards.
6. Complete safety interlock protection to avoid equipment damage and production accidents.
7. Flexible layout design, compatible with new steelmaking lines and old factory reconstruction projects.

5. Metallurgical Functions & Finished Steel Application

Main Refining Functions

1. Temperature compensation & constant temperature holding for continuous casting
2. Deep deoxidation and desulfurization
3. Precise alloy composition fine adjustment
4. Argon stirring homogenize temperature & chemical composition
5. Float up and remove harmful non-metallic inclusions

Applicable Steel Grades

• Ordinary carbon structural steel, high-strength low-alloy steel
• Bearing steel, spring steel, alloy tool steel
• Stainless steel, boiler pressure vessel steel, pipeline steel, automotive special steel

6. Reference Technical Parameters

7. Full Steelmaking Process Matching Flow