The configurable welded structure detensioning oven, CAL - DS 42.5, is a special electric oven used for the thermal treatment of dimensional stabilization of the welded metal structures. The oven bell-type is equipped with a forced ventilation system that ensures good temperature uniformity and rapid heat transfer both in the heating phase and in the cooling phase of the working chamber.
Constructive, functional and other features:
Type of oven: single compartment with fixed hearth and movable bell housing; is operated with a special lifting system;
Type of heat treatment: annealing after welding;
Type of heating: electric;
Supply voltage: 3 x 400 V / 50 Hz;
Oven atmosphere: circulating air, oxidant;
Forced convection through internal ventilation;
Hot Air Circulation: Vertical;
Layout of the parts on the hearth: on metal supports;
Gross load weight (products + devices): max. 40,000 Kg;
Temperature control accuracy: ± 10 ° C;
Equipped with temperature and process controller, with digital display of programmable sizes, which provides the following features:
- Digital display of the programmed temperature and time;
- Display the average temperature in the oven;
- Displays the temperature at the measuring points;
- Display the temperature on the track;
- Time display for each level;
- Editing various work schedules (starting, heating, maintenance, cooling and stopping);
- Heating speed (ramp);
- Programming automatic shutdown;
- Stop heating and sound signaling program ending;
Maximum working temperature: 650 ° C;
Working temperature: 590 ° C;
Heating speed: (30 ... 70) ° C / h;
Cooling speed: (30 ... 70) ° C / h;
Temperature measurement points in the oven working chamber: 7;
Temperature measurement points at the surface of the part: 6;
Temperature measurement resolution: 1 ° C;
Maximum absorbed power: 340 KW;
Non-uniformity of temperature in the piece, for parts of different shapes: ± 10 ° C;
Thermal screens to reduce the effect of thermal radiation and to protect the resistances placed in the oven;
Useful interior dimensions:
Length: 6800 mm;
Width: 3500 mm;
Height: 1500 mm.
Oven dimensions:
Length: 7520 mm;
Width: 3600 mm.
Overall dimensions:
Length *: 9000 mm;
Width: 5400 mm;
Height: 5000 mm.
* The length of the kiln with the tread is: L = 17000 mm.
Measurement / display for:
- currents and supply voltage throughout the heat treatment cycle;
- energy consumed with 1 minute sampling;
Graph display process evolution executed / prescribed;
Memorize (flash) and transfer stick history of strain relief histories (thermal and temporal parameters);
Issuing a heat treatment bulletin (operator identification data, piece, date, time, numerical thermal treatment cycle data, heat treatment cycle graph);
Fuse in operation: blocking of the automatic cycle controls;
Protection against accidental interruption of power supply (process resumption);
Self-protection to: defective thermocouple, overtemperature, power failure control;
Protection against accidental interruption of power supply (process resumption);
Self-protection to: defective thermocouple, overtemperature, power failure control;
Recording process parameters with digital multichannel recorder;