637 イオン浸炭処理切欠き PDI 材の疲労強度特性

概要

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Rotary bending tests for notched pearlite matrix ductile cast iron were conducted to evaluate the effect of ion carburization on fatigue strength. The carburization increased more than 30MPa the fatigue strength of the unnotched specimens and made the fatigue strength of notched specimens comparable to that of not-carburized unnotched specimens. The fact that the carburized notched specimens showed no decrease in fatigue strength deserves attention. Practically, shallownotched element members were improved by ion carburization better in fatigue strength than not-carburized notched ones. In the ion carburization process, carburization depth can be controlled by adjusting glow discharge time. Ion carburization process is friendly to enviroment in terms of no pollution and energy saving.
一般社団法人日本機械学会の論文
2000-07-31