Heat hardening is the process done at_______________?

Metallurgy 30/07/2020

A. Heating 750°C and slowly cooling to zero degree
B. Heating quickly upto 450°C followed by sudden quenching
C. Heating upto 250°C for 15 to 30 min
D. Heating at 750°C and then quenching to room temperature

Related Mcqs:

    Indium in metal alloys_______________?
    A. Improve bonding B. Harden the metal ceramic Ag-Pd alloy C. Both A and B D. None of the above...
    Titanium casting is done_____________?
    A. Under vacuum in argon atmosphere B. Under air pressure in nitrogen atmosphere C. In specially fabricated aluminium vanadium D. Using CAD-CAM technique...
    The solvent flux used for base metal soldering is_______________?
    A. Boric acid A. Borax B. Fluoride C. Rouge...
    Most biocompatible material in oral cavity is_______________?
    A. Platinium B. Palladium C. Titanium D. Gold...
    The contraction of gold alloy on solidifying is approximately_____________?
    A. 0.4% B. 1.4% C. 2.4% D. 3.4%...

Leave a Reply

Your email address will not be published. Required fields are marked *