鑄鐵의 酸素-Acetylene 火焰Quenching에 依한 硬化能에 미치는 成分元素의 影響 : Effect of Silicon and Phosphorus = Effect of Alloying Elements on the Hardenability of Cast iron by flame Hardening

다국어 초록 (Multilingual Abstract)

It may be unreasonable to estimate the hardenability of Cast iron on flame hardening mith reference to that of the conventional steel hardening conception. By oxygen-acetylene flame heating, Moreover, When cast iron is heated of by flame, graphite disloves in to the matrix more easily even a heating time.
In this Report, the auther described the study on the hatdenability of Cast iron nith various content of Silicon and phosphorus.
Ring type test piece were machine and flame treated by ring type oil burner, and hardness distribution were measured in Rockwell C scale on the hardened layer.
Summing up the result of the experiment, it can be said as follows.
1) the tendency of surface hardness falls by overheating and the thickness of hardened layer decreases with increasing amount of silicon.
2) the thickness of the hardened layeu decreases with the increase of phos-pkorus amount in the case of severe flame heating, and phosphorus lowers the hardness of the surface layer in sihgt heating.

목차 (Table of Contents)

• １. 緖 言
• ２. 試驗材料
• ３. 試驗方法
• ４. 試驗結果
• ５. 結 論
• ６. 參考文獻