These chamber ovens are available for maximum working temperatures of 260 °C or 450 °C. They are suitable for numerous processes such as pre-heating of moulds, ageing or drying. The version suitable for temperatures up to 450 °C is recommended for Heat Soak testing of Toughened Safety Glass (TSG). During a Heat Soak Test in accordance with EN 14179-1 the panes are exposed to a temperature of 290 °C for at least four hours in order to transform nickel sulfide inclusions and hence to prevent the pane from breaking spontaneously later. The documentation of the heat treatment process is strongly recommended. Program entry, visualization and the documentation of the process are achieved by means of the PLC-control in combination with the powerful Nabertherm Control Center (NCC), which registers and archives the temperatures at different measuring points on the pane.

• Tmax 260 °C or 450 °C
• Heated electrically or with gas
• Electrical heating by means of heater coils
• Direct gas heating or optionally indirect gas heating with temperature transfer via steel tube or heat exchanger
• Available with horizontal (type/HA) or vertical air circulation (type/A) for optimal uniformity in your charge
• Ground level charging without floor insulation for 260 °C models
• Temperature uniformity up to ∆T 6 K according to DIN 17052-1
• Optimal air circulation for your charge by means of adjustable air outlets
• Furnace chamber lined with alloy 314 (AISI)/(DIN material no. 1.4841)
• Low shell temperature by means of high quality mineral wool insulation
• Manually adjustable air inlet and exhaust air vent
• High air exchange for fast drying processes
• Furnace sizes suitable for common charging systems, such as pallets, baskets, etc.
• Double-winged door for models with an internal width of more than 1500 mm
• Over-temperature limiter with manual reset for thermal protection class in accordance with EN 60519-2 as temperature limiter controler to protect the oven and load

Additional equipment

• Data recording via Nabertherm Control Center (NCC) in accordance with the requirements of EN 141791 for Heat Soak Tests of Tempered Safety Glass (TSG)
• Racks for loading of standing glass panes
• Optional floor insulation for improved temperature uniformity on 260 °C models
• Entry ramp or track cutouts for floor-level charging of models with insulated bottom
• Electro-hydraulic lift door
• Fan system for faster cooling with manual or automatic control
• Motor-driven control of exhaust air flaps for better ventilation of the furnace chamber
• Window and furnace chamber illumination
• Safety technology according to EN 1539 for charges containing solvents
• Catalytic or thermal exhaust gas cleaning systems
• Custom sizes up to 40,000 liters and charge weights up to 30 tons