Furnace Control & Automation
Melting, holding, and heat-treatment furnaces require coordinated control of zone temperature, combustion, furnace pressure, and batch sequences. VITECH engineers furnace control systems, Burner Management Systems, and fuel-safety interlocks for the actual equipment configuration. Recipes, thermal profiles, energy data, and alarm history are integrated to support operation, batch traceability, and thermal-system maintenance.
1. Temperature & Thermal Profile Control
Multi-zone PID Temperature Control
Engineering independent PID loops for each furnace zone, integrating thermocouples, pyrometers, and burner or heater output signals for setpoint-based thermal control.
Temperature Uniformity & Heating Profiles
Monitoring temperature deviation between zones and managing ramp, soak, hold, and cooling profiles for each heat-treatment batch or product type.
2. Burner Management & Combustion Control
Burner Management System
Implementing purge, leak-test, ignition, flame-proving, and burner-shutdown sequences with permissives based on fans, dampers, gas pressure, and valve status.
Air-Fuel Ratio Control
Coordinating combustion air and fuel flow by thermal demand, applying cross-limiting during load changes, and integrating O₂ trim where suitable analyzers are available.
3. Furnace Pressure & Atmosphere Control
Furnace Pressure & Draft Control
Controlling flue dampers, ID fans, or fan speed from furnace-pressure measurements while coordinating with firing-load changes and furnace-door status.
Protective Atmosphere Monitoring
Integrating O₂, dew-point, pressure, and protective-gas flow measurements where applicable, with deviation alarms and recipe-based gas-supply interlocks.
4. Recipe & Sequence Automation
Heat-Treatment Recipe Management
Building recipes with target temperature, ramp rate, soak time, deviation limits, and step-transition conditions, including controlled editing and recipe-version records.
Charging, Heating & Cooling Sequences
Coordinating furnace doors, roller tables, charging cars, circulation fans, and cooling equipment within batch sequences using position confirmation and step permissives.
5. Safety, Permissives & Interlocks
Furnace Permissives & Emergency Shutdown
Engineering cause-and-effect matrices for start permissives, burner trips, fuel isolation, and controlled equipment response when hazardous conditions are detected.
Fuel & Gas Safety Interlocks
Monitoring high and low pressure, double-block-and-bleed status, combustion fans, flame detectors, and slam-shut valves, with first-out records to support trip-cause analysis.
6. Energy & Furnace Performance Data
Fuel & Electrical Energy Monitoring
Integrating fuel flowmeters, electrical meters, and production data to track consumption by furnace, batch, recipe, or operating period.
Historian, Alarms & Heat-Cycle Reporting
Historizing zone temperatures, batch profiles, burner status, and alarm events while generating heat-cycle reports and KPI dashboards from validated data.
Ready to start your project?
Contact our technical experts for configuration advice and a comprehensive quote.
Request Expert Consultation