Continuous-flow furnaces are industrial furnaces that operate continuously, in which components or workpieces are automatically transported through the furnace and heat-treated in the process. They are used wherever high production volumes with consistent quality are required. To ensure a stable and reproducible process, high-performance process controllers and an integrated process control system such as Prosys from Demig are essential.
How They Work and Applications
Unlike chamber furnaces, continuous-flow furnaces operate continuously: The workpiece moves through the furnace—for example, on rollers, chains, or a conveyor belt—and passes through various zones with precisely defined temperatures and dwell times. This enables uniform heat input and high process reliability with short cycle times.
Typical applications include:
- Hardening, Annealing, and Tempering in Mass Production
- Brazing or sintering processes in electronics and metalworking
- Heat treatment of components in the automotive and supplier industries
Demig offers specific control and visualization solutions for these applications that can be flexibly adapted to different furnace types and process requirements.
Control with process controllers and a control system
Precise control of temperature zones and conveyor movement is crucial for the quality of the heat treatment. Process controllers from Demig, such as the DE-CP 3XX and DE-CP 5XX series, enable zone-specific temperature control with minimal deviations within the tolerances. Direct connection to the Prosys process control system allows for:
- Real-time monitoring of all process parameters
- Automated batch and recipe synchronization
- Complete documentation in accordance with standards such as CQI-9 or AMS 2750
In addition, prosys/2 can be used to digitally control and visualize conveyor speeds, cycle times, and furnace atmospheres.
Benefits for Production and Quality Assurance
Continuous furnaces combined with Demig control technology offer companies numerous benefits:
- High process stability for large production volumes
- Reduction of scrap through precise control
- Integration with ERP or MES systems for automated order processing
Thanks to their modular architecture, Demig solutions can be used in both new installations and retrofits of existing systems.
Conclusion
Continuous furnaces are the first choice for automated heat treatment in continuous processes. In combination with Demig’s high-performance process controllers and the scalable prosys/2 process control system, this creates a comprehensive solution for reproducible, documented, and cost-effective manufacturing processes—flexibly applicable across a wide range of industrial sectors.