| abstract |
(57) [Problem] To provide a cast iron member excellent in pitting resistance by changing a ferrite phase of a cast iron member into a high-strength phase by heat treatment, and a method of manufacturing the same. A camshaft is driven at 830 to 910 ° C. for 10 to 10 minutes. After heating and holding for 120 minutes and then cooling by oil cooling, the as-cast ferrite phase is transformed into a martensite phase 5 or a troostite phase. |