鋼の燒入に及ぼす各種元素の影響第 2 報

概要

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Following the first report, I have studied on the combined effects of more than two special elements oxisting in steel. Summarizing the results obtained, I have introduced a simple method to investigate graphically the effects of these elements in special steels from that of the individual element already studied. Moreover I have studied the effects of various contents of carbon upon hardening of special steel and the influence of various quenching temperatures and conditions. I have also observed the influence of gaseous elements in steels. Finally applying the general equation of thermal conductivity for the calculation of the cooling velocity in inner parts of steel during hardening process, it was proved that the hardening depth of a large mass of steel as treated in a factory, can be measured by the above method using the value of the critical cooling velocity. Thus, it is demonstrated that the results and methods obtained by the writer in these experiments have a great value in actual hardening practice.
社団法人日本鉄鋼協会の論文
1938-04-25