31-03-2012, 11:13 AM
Furnaces Protective Gas Boxes Hardening Systems
Foundry.pdf (Size: 1.58 MB / Downloads: 423)
Made in Germany
Nabertherm with more than 350 employees worldwide have been developing and producing industrial furnaces
for many different applications for over 60 years. 150,000 satisfied customers in 100 countries offer proof of our
commitment to build quality equipment cost-effectively. Short delivery times are ensured due to our complete
inhouse production and our wide variety of standard furnaces.
Setting Standards in Quality and Reliability
Our products range from standard furnaces to flexible, state-of-the-art fully automatic systems and plants with
material handling technology. Your complete heat treatment production process can be realized through our
customized solutions.
Innovative Nabertherm control technology provides for precise control as well as full documentation and remote
monitoring of your processes. Our engineers apply state-of-the-art technology to improve the temperature
uniformity, energy efficiency, reliability and durability of our systems with the goal of enhancing your competitive
edge.
Neutral Annealing Coal
For protection of tool steel against oxidation and decarburizing, binds oxygen at all process temperatures
Workpieces are placed in a hardening box with annealing coal
Reusable multiple times with addition of approx. 20 % new granulate
Carburizing Powder and Granulate
Workpieces are placed into an annealing box with carburizing powder or granulate and the lid is closed and
sealed
At approx. 900°C the steel reacts with the carbon and forms an approx. 0.2-2 mm thick layer
The thickness of the layer depends on the length of the process, approx. 0.1 mm/hr, a process time of approx.
6-8 hrs achieves good average results
Powder for alloyed and non-alloyed steels for single use as well as granulate for multiple use with approx. 20 %
new granulate added
Supplied in 25 kg sacks
Stainless Steel Heat Treating Foil to avoid Surface Reactions
Single parts requiring protection against decarburizing can be wrapped in a stainless steel heat treating foil off the
roll or packed in prepared envelopes or bags. The rolls are available in various lengths and widths, the envelopes
and bags are supplied in various dimensions.
Foil off the roll can be cut to size using gold plates scissors and the workpiece can be wrapped to requirements.
See page 9 for more details about accessory supplies required, such as tongs and special gloves. The protected
workpiece can now be loaded into the heated furnace. Due to the foil's thinness, it takes on the furnace temperature
immediately and binds oxygen trapped in the foil packaging. There is then no oxygen present to oxidize the
workpiece itself. The workpiece stays clean.
Glass
Different furnace concepts for annealing, bending slumping, decorating and tempering make Nabertherm your
strong partner for the heat treatment of glass and quartz.