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Case Hardening Processes MCQs – Chapter 7 DAE

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1. The process in which the steel components are heated in a bath of molten sodium carbonate is called:





2. The process which is carried out by heating the steel parts at 1000°F in a gas tight chamber in an atmosphere of ammonia is called:





3. Flame used for flame hardening is:





4. Maximum temperature for nitriding is:





5. 20% Barium carbonate is used in:





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