Gas Quenching
Gas Quenching : The introduction of a gas, usually nitrogen or argon (in certain situations helium or hydrogen may be used), into the furnace to a specific pressure [usually between -2. 5 psig to 15 psig (0. 85 bar to 2. 05 bar)] for the purpose of cooling the work. The gas is recirculated over the work and through a heat exchanger by means of a fan or blower
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