珪素を含むニッケル, クロム, モリブデン浸炭鋼の熱処理特性について
1972 年 58 巻 7 号 p. 921-931
詳細
1972 年 58 巻 7 号 p. 921-931
High silicon carburizing steels were developed and tested in order to increase the pitting resistance and the fatigue life of heavy duty gears.
The results are summarized as follows;
(1) Effects of silicon on the amount of retained austenite and on M, point of the carburized layer were not found by X-ray and dilatometric methods.
(2) Surface carbon content and carburized depth of these steels decreased with increasing silicon content. But the hardenability increased with silicon addition.
(3) Surface hardness, rolling fatigue life and toughness of these carburized steels were improved by silicon addition.
(4) Rapid heating and quenching after carburizing gave better qualities to those steels compared with slow heating and quenching.
