Air circulation furnaces
The air circulation furnace is the universal furnace for the heat treatment of piece goods. Whether plastic, aluminum, steel, titanium, clay or silicone parts - the air circulation furnace is the ideal system for drying, heating or aging. The possible options and design variants are correspondingly diverse.
Air circulation furnace for heat treatment up to 600 °C
An air-circulating furnace is mainly used for heat treatment at temperatures up to 600°C. The furnace is equipped with an inner housing made of stainless steel and the heating is usually carried out electrically by means of tubular heating elements.
Thermal energy generated inside the oven is conducted to the workpieces by the air stream moved by an electric fan. The air flow through the oven chamber can be vertical (circulating air) or horizontal (cross air).
Special designs (according to DIN EN 1539) allow this type of oven to be used as a paint drying oven.
Thermal energy generated inside the oven is conducted to the workpieces by the air stream moved by an electric fan. The air flow through the oven chamber can be vertical (circulating air) or horizontal (cross air).
Special designs (according to DIN EN 1539) allow this type of oven to be used as a paint drying oven.
Features
- Fields of application: Preheating, ageing (precipitation hardening), drying, paint drying, etc.
- Heat treatment of steel, aluminum, clay, foundry cores, silicone, plastics, etc.
- Air flow vertical (circulating air), horizontal (cross air) or combined
Personal advice from HOFMANN Wärmetechnik
Our traditional company in Upper Austria is happy to answer your questions. We will inform you about the features of our furnace systems and advise you personally.
- Contact us - if you wish, one of our competent employees will be happy to visit you on site.
System components our air circulation furnaces
Heating device:
The heater is constructed of Cr-Ni steel or Incoloy heating tubes. This allows long service life and best maintainability. The heating tubes can be replaced individually.
The heater is constructed of Cr-Ni steel or Incoloy heating tubes. This allows long service life and best maintainability. The heating tubes can be replaced individually.
Insulation:
High-quality insulating materials made of mineral phaser guarantee lowest energy losses and best temperature accuracy in the batch chamber.
High-quality insulating materials made of mineral phaser guarantee lowest energy losses and best temperature accuracy in the batch chamber.
Air conduction:
High-performance fans combined with a proprietary air guidance system ensure that the charge is heated quickly and as evenly as possible. The air flow can be adapted to the batch with air louvers. In recirculation mode, the workpieces lie in grid baskets or on air-permeable trays. Cross-air operation is necessary if, for example, the workpieces lie on air-impermeable trays or the charge material makes vertical air flow impossible.
High-performance fans combined with a proprietary air guidance system ensure that the charge is heated quickly and as evenly as possible. The air flow can be adapted to the batch with air louvers. In recirculation mode, the workpieces lie in grid baskets or on air-permeable trays. Cross-air operation is necessary if, for example, the workpieces lie on air-impermeable trays or the charge material makes vertical air flow impossible.
Construction:
Inner housing made of stainless and heat-resistant steel, in applications where vapors are generated in the course of heat treatment, the inner housing and the feedthroughs are continuously welded so that a gas-tight separation from the insulation is created. In general, emphasis is placed on a robust design suitable for industrial use.
Inner housing made of stainless and heat-resistant steel, in applications where vapors are generated in the course of heat treatment, the inner housing and the feedthroughs are continuously welded so that a gas-tight separation from the insulation is created. In general, emphasis is placed on a robust design suitable for industrial use.
Control system:
Depending on customer requirements, versions with a simple temperature controller up to a freely programmable control system are possible. The furnace can be equipped with its own batch and process archiving system. Integration into existing archiving systems is also possible.
Depending on customer requirements, versions with a simple temperature controller up to a freely programmable control system are possible. The furnace can be equipped with its own batch and process archiving system. Integration into existing archiving systems is also possible.
The furnaces planned and manufactured by HOFMANN Wärmetechnik are therefore always individually tailored to the process requirements.
- The concepts are developed and implemented in close cooperation with the customer.
Technical data TSL
| Inner dimensions [mm] | Temperature [°C] | Power [kW] | Weight [kg] | |
|---|---|---|---|---|
| Types | bxhxt | Heating | ||
| TSL 0.5 | 800x800x750 | 100 bis 600 | 7 bis 27 | 530 |
| TSL 1.0 | 1000x1000x1000 | 100 bis 600 | 9 bis 36 | 750 |
| TSL 4.0 | 1500x1750x1500 | 100 bis 600 | 36 bis 80 | 2300 |
| TSL P1 | 1000x1050x1300 | 100 bis 600 | 40 | 1500 |
| TSL P2 | 1000x2100x1300 | 100 bis 600 | 50 | 1850 |
| Lorem | Lipsum |
- TSL S: Special design according to customer requirements
Options TSL
- Air dampers: controlled air dampers, supply or exhaust fans, air volume control, oven pressure control.
- Door options: single-wing, double-wing, bogie, hanging basket system, lift door
- Air flow: recirculation, cross air, combined air flow, change of air direction
- Control: single controller, freely programmable control
- Archiving: temperature recorder, archive recording, process archiving, via TCP/IP and LAN or WLAN
Do you have questions about:
Air circulation furnaces
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