Beside the steel-making furnaces where sparks fly, on the production lines where rolling mills roar, and in the high-temperature environment of coking plants, every production link in heavy industry is an extreme test for electrical control systems. The special working conditions in the steel and metallurgy industry - high temperature, high humidity, dust, and strong vibration - cause frequent failures of traditional control equipment, seriously affecting production continuity and equipment safety. Especially under the current severe challenges of transformation and upgrading and energy conservation and emission reduction in the steel industry, the reliability and intelligence level of the control system directly relate to the core competitiveness of enterprises.
In response to the specific demands of the steel and metallurgy industry, Gorden Electric has developed a full range of heavy industrial-grade solid state relay solutions, providing reliable, efficient and intelligent power control guarantees for the entire steel production process, from raw material preparation to rolling and finishing.
Ironmaking Process: Reliable Control in High Temperature and High Dust Environment
Blast furnace ironmaking is the most energy-consuming stage in steel production, and the control accuracy directly affects the quality of molten iron and energy consumption level:
Top charging control: Rotary top charging control without a charging hopper, with a charging matrix accuracy of ±1°.
Hot blast stove control: Three hot blast stoves are intelligently switched, with wind temperature control accuracy of ±5℃.
Pulverized coal control: Precise control of pulverized coal concentration and injection volume, increasing the coal injection ratio to 180 kg/t.
Cooling system control: Coordinated control of multi-stage cooling systems for industrial water, soft water, and pure water.
Raw material preparation control:
Sintering machine control: multi-parameter optimization control of material layer thickness, ignition temperature and machine speed
Pellet control: Temperature control of the grate-kiln, pellet compressive strength > 2500N per piece
Coke oven control: Precise control of heating gas flow in coke ovens, with temperature uniformity within ±10℃.
Screening and dust removal control: Coordinated control of vibrating screens and dust removal fans, with dust concentration < 10 mg/m³.
TRT waste pressure power generation:
Blast furnace gas pressure control: Pressure fluctuation at the top < ±2 kPa, power generation efficiency improved
Turbine control: Precise adjustment of the static blade angle, with power generation control accuracy of ±1%
Bypass quick-opening control: In case of an accident, the bypass valve opens rapidly with a response time of less than 200 milliseconds.
Safety interlock control: Interlocked with the safety of blast furnace production to ensure the safety of the blast furnace.
In a 5800m³ blast furnace project of a large-scale steel enterprise, the Gorden control system helped reduce the fuel ratio by 15kg/t, increase TRT power generation by 8%, and achieve an annual economic benefit of over 120 million yuan.
Steelmaking process: Precise control with millisecond-level response
Modern steelmaking places extremely high demands on the response speed and accuracy of the control system:
Control of Converter Steelmaking:
Oxygen lance control: The control accuracy of lance position is ±50mm, and the control accuracy of oxygen blowing flow rate is ±2%.
Sub-lance control: Automatic operation for temperature measurement, sampling and carbon determination, with measurement time less than 3 minutes.
Bottom-blowing control: Precise control of bottom-blowing gas flow, optimized stirring effect
Alloy addition control: The accuracy of microalloying element addition is ±0.5kg.
Electric furnace steelmaking control:
Electrode adjustment control: Electrode lifting and lowering speed > 6m/min, arc stability improved
Power supply curve optimization: Intelligent power supply curve based on furnace conditions, reducing power consumption by 20 kWh/t.
Oxygen-carbon lance control: Supersonic oxygen lance control, decarburization rate increased by 15%
Waste heat recovery control: Optimization of flue gas waste heat recovery system, improvement of energy utilization rate
Refining Furnace Control:
LF furnace control: Electrode adjustment in ladle refining furnace, heating rate 4-6℃/min
RH vacuum treatment: Vacuum degree control < 67 Pa, treatment time reduced by 20%
CAS-OB control: Oxygen-blowing temperature increase control, with a temperature rise rate of 8-12℃/min.
Wire feeding control: The control accuracy of the feeding speed in the calcium treatment line is ±5%.
Continuous casting machine control:
Mold oscillation control: Non-sinusoidal oscillation control, reducing the depth of oscillation marks by 30%
Secondary cooling water distribution control: Dynamic water distribution based on solidification model, improving the quality of the cast billet.
Casting speed control: Fluctuation of casting speed < ±1%, and the rate of casting interruption reduced by 50%
Automatic pouring start control: Pouring start success rate > 99%, standardized operation.
After the adoption of the Gordan control system in a certain steelmaking workshop of Baosteel, the accuracy of molten steel composition control has increased by 40%, alloy consumption has decreased by 12%, and annual cost savings have exceeded 80 million yuan.
Rolling process: High dynamic response precision control
Hot rolling and cold rolling have the highest requirements for the dynamic response capability of the control system:
Hot continuous rolling control:
Coarse rolling control: Rolling force control accuracy ±1%, width control accuracy ±5mm
Finishing mill control: Loop height control ±5mm, tension control accuracy ±2%
Laminar flow cooling control: The temperature control accuracy of the steel strip cooling is ±15℃.
Winding control: Winding tension control, reducing tower shape defects by 80%
Cold continuous rolling control:
Thickness control: AGC thickness control accuracy ±5μm, plate shape control accuracy 5I
Rolling force control: Segmented cooling control, roll thermal crown compensation
Tension control: Coordinated control of tension during uncoiling, rolling and coiling.
Surface quality control: Maintaining the roughness of the rolls and enhancing the consistency of surface quality.
Straightening and shearing control:
Straightening machine control: Multi-roll straightening machine roll gap setting, straightness < 3mm/m
Flying shear control: High-speed flying shear fixed-length cutting, length accuracy ±5mm
Laser welding machine control: Welding of the head and tail of steel strips, welding success rate > 99.5%
Coating control: Coating thickness control accuracy ±1g/m²
During the renovation of the 2150mm hot continuous rolling production line at Ansteel, the Gildan control system helped achieve an improvement in thickness accuracy from ±50μm to ±30μm, and in width accuracy from ±10mm to ±5mm, with an increase of 1.2 percentage points in product yield.
Special environmental adaptability design for heavy industry
The steel and metallurgical environment poses extremely harsh challenges to electrical equipment:
High-temperature environment protection:
Operating temperature range: -20℃ to +85℃, short-term withstand up to 125℃
Thermal insulation design: Thermal insulation protection for equipment in high-temperature areas
Thermal cycling durability: Verified by 1000 temperature cycle tests
High-temperature insulation: Insulation performance maintained at high temperatures
Dust-tolerant environment:
IP65 protection rating: Completely dustproof and resistant to high-pressure water jets.
Self-cleaning design: Special surface treatment reduces dust adhesion.
Sealed heat dissipation: High-efficiency heat dissipation design under sealed conditions
Maintenance and optimization: The modular design facilitates cleaning and maintenance.
Adaptation to strong vibration environments:
Seismic design: Capable of withstanding 5-15 Grms random vibration
Connection reliability: Anti-vibration connectors ensure reliable contact in vibrating environments.
Structural reinforcement: Design for structural reinforcement of key parts
Online monitoring: Health status monitoring in a vibrating environment
Corrosion environment protection:
Anti-corrosion coating: Special coating resistant to acid, alkali and salt spray.
Sealed protection: Prevent corrosive gases from entering the interior of the equipment.
Material selection: Stainless steel, special alloy applications
Regular maintenance: Regular inspection and maintenance of the corrosion protection system
Energy conservation and emission reduction and green development
Under the dual carbon goals, energy conservation and emission reduction in the steel industry are particularly crucial:
Energy Management System:
Real-time energy monitoring: Real-time metering of multiple energy sources including electricity, gas, water and steam.
Energy balance analysis: Process energy balance and energy efficiency analysis
Energy-saving potential identification: Energy-saving potential identification based on data
Energy efficiency benchmarking: Process energy consumption benchmarking and improvement
Waste heat and energy recovery:
Flue gas waste heat recovery: Efficient recovery of waste heat from sintering and steel rolling flue gas
Recovery and Utilization of Gas: Recovery and Utilization of Gas from Blast Furnaces and Converter Furnaces
Steam recovery and utilization: Multi-level utilization of produced steam
Pressure energy recovery: TRT, BPRT and other pressure energy recovery methods.
Process optimization for energy conservation:
Intelligent combustion control: Intelligent combustion control for heating furnaces and heat treatment furnaces
Variable frequency energy-saving control: Energy saving through variable frequency control of fans and pumps
Reactive power compensation optimization: Dynamic reactive power compensation improves power factor.
Process parameter optimization: Process parameter optimization based on energy consumption
Carbon footprint management:
Carbon emission accounting: Precise accounting of carbon emissions in production processes
Carbon emission reduction measures: Energy conservation and technological transformation carbon emission reduction volume accounting
Carbon trading support: Carbon emission data supports carbon trading.
Carbon Neutrality Path: Support for Enterprises' Carbon Neutrality Path Planning
The intelligent and digital transformation of the steel industry is accelerating:
Intelligent operation and maintenance of equipment:
Predictive Maintenance: Fault Prediction and Health Management of Critical Equipment
Remote diagnosis: Remote diagnosis of equipment failures and expert support
Maintenance Optimization: Reliability-based Maintenance Strategy Optimization
Knowledge Management: Accumulation and Sharing of Maintenance Experience Knowledge
Production process optimization:
Digital twin applications: Digital twin of the entire process from ironmaking, steelmaking to steel rolling
Intelligent Scheduling: Dynamic Production Scheduling Based on Real-time Data
Quality Prediction: Quality Prediction and Optimization Based on Process Data
Energy consumption optimization: AI-based energy consumption optimization control
Safe, environmentally friendly and intelligent management:
Safety Monitoring: Real-time Monitoring and Early Warning of Major Hazard Sources
Environmental protection monitoring: Real-time monitoring and control of pollutant emissions
Occupational Health: Monitoring and Improvement of the Working Environment
Emergency Management: Intelligentization of Emergency Plans and Emergency Responses
Supply chain collaboration:
Raw material optimization: Raw material procurement and proportioning optimization based on cost
Order Management: Intelligent Scheduling and Tracking of Customer Orders
Logistics optimization: Product shipment logistics optimization
Customer Service: Quick Response to Customer Quality Feedback
Economic Benefits and Industry Value
The Gordon Steel Industry Solution creates multiple values:
Direct economic benefits:
Improving production efficiency: Increasing equipment operation rate by 3 to 8 percentage points
Reduce energy consumption: Reduce energy consumption in the process by 5-15%
Increase the yield rate: The product yield rate is increased by 0.5 to 2 percentage points.
Reduce quality loss: Reduce quality waste by 30-50%
Technical value demonstration:
Control accuracy improvement: The control accuracy of key process parameters has been enhanced by 30-50%.
Improved stability: The stability of the production process has been significantly enhanced.
Automation level: The automation level has reached the international advanced level.
Innovation capability: Enhancement of technological innovation capability in craftsmanship
Safety, environmental protection and benefits:
Reduction in safety incidents: Major safety incident risks have decreased.
Environmental protection compliance: Stable compliance with pollutant discharge standards
Occupational health improvement: The working environment has been significantly improved.
Corporate social responsibility fulfillment: Better fulfillment of corporate social responsibility
Investment return analysis:
New project: Payback period of 2 to 3 years, internal rate of return of 25% to 35%
Renovation project: Payback period of 1.5 to 2 years, internal rate of return of 30% to 45%
Energy-saving projects: Payback period of 1-2 years, internal rate of return of 40-60%
Intelligentization project: Payback period of 2 to 3 years, internal rate of return of 20% to 30%
Future Trends and Technological Development
The technological development in the steel industry is advancing at an unprecedented pace:
Hydrogen metallurgy technology:
Hydrogen production control: Control of hydrogen production system by electrolyzing water
Hydrogen-based direct reduction: Control of hydrogen-based shaft furnace direct reduction
Hydrogen-reduced iron electric arc furnace steelmaking control
Carbon capture and utilization: Carbon capture and utilization in the steelmaking process
Short process technology:
Integrated control of thin strip continuous casting and rolling
Headless rolling: Control of headless rolling technology in hot rolling
Near-net-shape casting: Near-net-shape continuous casting control technology
3D Printing: Metal 3D Printing Control Technology
Deepening of intelligent manufacturing:
Industrial AI Applications: Deep Application of Artificial Intelligence in Steelmaking Processes
Digital twin maturity: Full-process high-precision digital twin
5G industrial application: Large-scale application of 5G in the steel industry
The popularization of robots: The comprehensive application of robots in steel production
Green and low-carbon development:
Zero-carbon steel plant: Technical route for zero-carbon emission steel plants
Circular economy: The integration of steel production and social circular economy
Eco-steel plant: Integration of steel plants and urban ecology
Sustainable Materials: Development and Application of Green Steel Materials
In the historical process of China's steel industry evolving from large-scale to strong, Godel Electric will continue to provide advanced and reliable control technologies, assisting the steel industry in achieving green and intelligent transformation. From the surging molten iron to the flying steel flowers, from the roaring rolling mills to the product finishing, Godel control systems are safeguarding every critical link in steel production.
Choosing Gorden Heavy Industry Solutions means choosing a firm support for the dream of a steel power. Let's join hands and use innovative control technologies to jointly promote the high-quality development of China's steel industry and contribute steel power to building a manufacturing power.
Blast Furnace Body Control System:
