- With subsequent quenching/cooling in oil or pressurized gas
- Max. usable dimensions: 1,000 x 600 x 750 mm (with gas cooling, the usable height is reduced to 660 mm); max. batch weight: 750 kg
- Ideal for series parts with the smallest tolerances
- Low-CO2 alternative that combines the advantages of case hardening and vacuum hardening with minimal distortion
In low-pressure carburizing, the material is specifically enriched with carbon in the surface layer in a similar way to case hardening. This combines the advantages of case hardening and vacuum hardening. The workpieces are first heated to a constant temperature under vacuum. During carburizing, a predefined carbon supply is cyclically generated in the annealing chamber, which alternates with equalization times for diffusion into the interior of the workpiece. Compared to atmospheric carburizing, this results in shorter treatment times and greater uniformity for parts with complex geometries. Treatment completely under vacuum also results in only minimal influences on the surface finish and low distortion.
If pure carburizing is the aim, the process can now be ended by gas cooling.
Otherwise, hardening takes place in oil or pressurized gas with subsequent tempering treatment, if desired also under vacuum or inert gas.
All iron-based alloys can be treated, from standard low-alloy case-hardening steels to high-alloy steels and powder-metallurgically produced steels.
Thanks to the precise process control and heating via radiant heat, low-pressure carburizing is also a CO2-reduced alternative to conventional processes in controlled atmospheric furnaces.
HÄRTEREI REESE uses fully automated, state-of-the-art systems for this purpose, which can optimally map all variants of vacuum treatment thanks to their modular design. Thanks to the sophisticated control technology and regular process monitoring, there are only minimal deviations between production batches in series production.