San Francisco : Architect and Engineer, Inc · leaf 222
steel. Vanadium is the best nitrogen getter but alum-inum is generally used. Hydrogen is a problem onlarger ingots in excess of 6 inch diameter. Introduc-ing argon is the best means of flushing it out. Because inclusions become larger as the rate ofcooling is decreased it is believed that the… … MAY, 1951 chemical action. Mr. Rassbach pointed out that thelower carbon content required in a steel results ina greater content of residual oxygen that must beremoved by deoxidizers. The speaker covered the alloying effect of ele-ments in the second part of his talk. Manganeseand silicon are used…
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