withdrawn and quenched in water oroil. It should be noted that no damage can occur to thematerial by leaving it in the bath for a longer periodthan is actually necessary, providiiig the temperatureis kept constant. On the other hand, ample time shouldbe allowed for the articles to heat through if… … Fig. 2—Drum head ni/in)iiitgn made from duralu-min DURALUMIN Automotive hidiistries AuyKst 2i, 1022
Automobiles · Aeronautics
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