WHY VACUUM HEAT TREATING? At the elevated temperatures used
in heat treating, metal surfaces react with oxygen, hydrogen, water vapor and other
atmospheric gases to cause undesirable effects including oxidation, decarburization,
cracking, corrosion damage, and discoloration. This is especially problematic when finish
machined parts are being heat treated. Vacuum heat treating solves this problem by heat
treating in a special vessel from which virtually all of the air has been removed. Quenching
is performed using high velocity argon or nitrogen gas.
NATIONAL HEAT TREAT - THE VACUUM EXPERTS: At National Heat
Treat, vacuum heat treating is one of our specialties. We have one of the largest commercial
vacuum furnaces in the region with a working zone of 72" in diameter x 80" in
height. This vertical furnace is able to handle loads up to 8000 lbs and can reach
temperatures as high as 2400℉ and features an integrated gas quench using nitrogen or
argon. In addition, we have a horizontal vacuum furnace providing additional capacity.