| 摘要 |
PURPOSE: A lead free-free-cutting steel wire with excellent machining and hot rolling properties and a manufacturing method thereof are provided to control the total amount of oxygen by stages. CONSTITUTION: A lead free-free-cutting steel wire with excellent machining and hot rolling properties comprises C 0.03~0.10 weight%, Si less than 0.1 weight%, Mn 0.8~2.2 weight%, P 0.02~0.13 weight%, S 0.25~0.65 weight%, B 0.0005~0.010 weight%, Cr 0.1~1.0 weight%, Ti 0.005~0.15 weight%, Bi 0.03~0.3 weight%, N 0.003~0.012 weight%, O 0.007~0.027 weight%, Fe, and inevitable impurities. |
