Using annealing boxes, you can operate our standard air circulation furnaces, models N 30/45 HA - N 500/85 HA and models S 30/45 A - S 500/85A, under a defined protective atmosphere. This allows processes such as bright annealing, annealing under protective gas, or curing of copper alloys. On standard models, the boxes are equipped with a lid and a protective gas inlet and outlet. The lid is sealed by means of a sealing groove with a fibre gasket before loading into the furnace. The furnace is equipped with a special pass-through for the box inlet and outlet connections. The box inlet is connected to a gas supply panel. We have gas supply panels available for either manual or automatic control. As a vacuum model, the box allows air evacuation in cold condition before refilling with protective gas. This system is particularly useful for bright annealing of bulk materials, since the oxygen can be more efficiently removed from the box by means of pre-evacuation than through purging alone. In our modern research center we can carry out tests and experiments to demonstrate how these boxes perform with your materials.

• Protective gas inlet and outlet
• Sealing groove with fibre gasket
• Made of high heat-resistant stainless steel alloy 314 (AISI)/(DIN material no. 1.4841)

Additional Equipment

• Reinforced box with special seals for room-temperature vacuum use, particularly useful for bulk material heat treatment and low pre-purging gas consumption
• Vacuum pumping station for box evacuation, including connection set and three-way valve
• Gas supply panel with manual or automatic controls