This type of furnace was specially developed for soft annealing to achieve globular cementite in medium and high-alloyed tool steels, high speed steels, cold heading and bearing steels.
As well as taking care of the as-annealed quality factors, this design of furnace also minimizes process atmosphere consumption (nitrogen only) to improve economy. A CO2 control system automatically calculates and regulates the required process atmosphere (nitrogen).
Processing temperature range of 400 °C to 950 °C (1050 °C). Net throughputs of between 2,000 kg/h and 10,000 kg/h can be achieved depending on the size of the facility and the heat treatment program selected.
These furnaces are built with a standardized hearth width (charge width) of 1750 mm or 2250 mm. Other widths are available on request.
For certain steel grades requiring an extremely high cooling gradient (up to 300 K/min), the roller-hearth furnace can be fitted with a HICON® jet cooler.
The facility can be implemented to comply with the standards required by the automotive industry in accordance with CQI-9 (AIAG).
Advantages of the EBNER design