Details
Protective Gas Retort Furnaces – T max. 1100 °C, Oxygen-Free Heat Treatment
Protective gas retort furnaces are designed for heat treatment processes that must be carried out in an oxygen-free atmosphere, such as bright annealing, tempering, sintering, and soldering. The program includes both chamber and shaft furnaces, with robust design and precise temperature control to ensure uniform heating and minimal gas consumption.
Retort shaft furnaces
- Individual design, specially adapted to the process and the batch dimensions
- Shaft furnaces to be loaded from top with vertical, gas-tight retort, crane loading possible
- Retort made of highly heat resistant steel with special gasket and water-cooled flange
- All-round heating for very uniform heating of the retort and the batch
- Cover with vertical movement, special seal with water cooling
- Suitable for various protective gases such as Nitro- gen, Argon, forming gas 95/5
Options
- Retort with gas circulation (T max. 900 °C)
- Automatic gassing device
- Vacuum pump for cold evacuating of the retort
- Process control via batch thermocouple in the retort
- Cooling system with exhaust air flap control for cooling to reduce the process times
- O2-measuring instruments for monitoring
Applications
Typical applications include:
- Bright annealing under protective gases
- Tempering and sintering processes
- Soldering in oxygen-free atmosphere
- Custom heat treatment adapted to specific batch sizes and materials
Features
ROBUST DESIGN
Gas-tight retort furnaces with horizontal or vertical shafts, built to last.
UNIFORM HEATING
Multi-sided heating ensures consistent temperature distribution inside the retort.
PROTECTIVE GAS
Compatible with Nitrogen, Argon, and forming gas 95/5 for oxygen-free processes.
LOW GAS CONSUMPTION
Efficient design minimizes protective gas usage while maintaining quality.
SHAFT FURNACES
Top-loading vertical retorts with crane options and water-cooled gaskets.
DOOR SYSTEM
Parallel-guided swing door or vertical moving cover with encapsulated insulation.
PROCESS CONTROL
Optional thermocouple-based batch monitoring, automatic gassing, vacuum evacuation, and cooling system control.
ADDITIONAL OPTIONS
Gas circulation (T max 900°C), O2 measuring instruments, and custom process adaptations.
Specifications – Typical Performance and Dimensions
| Model | T max. [°C] | Internal Dimensions [mm] (W x D x H) | Volume [l] | External Dimensions* [mm] (W x D x H) | Power [kW] | Voltage [V] | Weight [kg] |
|---|---|---|---|---|---|---|---|
| KM 25/11/R | 1100 | 220 x 450 x 260 | 25 | 1400 x 1300 x 1450 | 11 | 400 3/N | 400 |
| KM 30/11/R | 1100 | 320 x 450 x 200 | 30 | 1450 x 1300 x 1450 | 13 | 400 3/N | 570 |
| KM 65/11/R | 1100 | 450 x 700 x 200 | 65 | 1500 x 1600 x 1650 | 21 | 400 3/N | 950 |
| KM 120/11/R | 1100 | 500 x 700 x 340 | 120 | 1650 x 1550 x 1650 | 29 | 400 3/N | 1050 |
| KM 250/11/R | 1100 | 700 x 1050 x 340 | 250 | 1850 x 1900 x 1700 | 50 | 400 3/N | 1350 |
* Performance and dimensions are typical. For detailed configurations, please contact our technical team.
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