This compact system is very suitable for hardening under protective atmosphere and subsequent quenching of the charge under protective gas in oil. Hence, this system can be used for hardening processes that would otherwise require complex furnace systems. In our modern research center we can carry out tests and experiments with different materials to specify the right heat treatment process for you. An annealing box with protective gas port containing the work pieces is charged into the furnace. After finishing the heat treatment, the box is extracted out manually and placed onto the quenching facility. Reaching the rear trigger, the box bottom automatically lowers into the hardening oil, and is moved up and down. The space above the oil surface is flushed with protective gas to displace oxygen in order to avoid ignition.

Standard Model

• Chamber furnace N 41/H (for specifications, see page 20) with pneumatic door and foot pedal switch
• Annealing box with protective gas port and drop bottom
• Manual gas supply equipment with pressure reducer (200 bar) and flow meter for nitrogen or forming gas 95/5
• Pneumatic lowering of charging grate with box bottom and charge
• Up and down movement of charge for even quenching
• Gas purging of box from two sides, approx. 10 l/min
• Maximum charge weight 30 kg
• Maximum hardening temperature 1050 °C
• Inner dimensions of the box: 260 x 380 x 180 mm (w x d x h)
• Oil bath for quenching on casters

Additional Equipment

• Oil bath heating
• Oil temperature indicator
• Exhaust hood
• Water bath