CAJ | 학술논문

研制的武钢 WY1215易切削钢采用低碳、高硫、高氧、高磷等成分设计，选择合适连铸保护渣、采用弱冷连铸工艺和“高温、快轧”轧制工艺等措施。生产中 WY1215未发生漏钢和轧制开裂等问题，冶炼和轧制过程顺行，铸坯质量优良，钢材各项性能指标满足用户要求；钢中夹杂物分布均匀，主要为对切削性能有利、呈球状或纺锤状的Ⅰ型硫化锰，组织为铁素体和珠光体。
연제적무강 WY1215역절삭강채용저탄、고류、고양、고린등성분설계，선택합괄련주보호사、채용약랭련주공예화“고온、쾌알”알제공예등조시。생산중 WY1215미발생루강화알제개렬등문제，야련화알제과정순행，주배질량우량，강재각항성능지표만족용호요구；강중협잡물분포균균，주요위대절삭성능유리、정구상혹방추상적Ⅰ형류화맹，조직위철소체화주광체。
This paper introduced research situation of WY1 2 1 5 free-cutting steel which was produced by Wuhan Iron and Steel Company:designing chemical compositions of low carbon,high sulfur,high oxygen,high phosphorus etc.,choosing appropriate continuous casting covering slag,and using weak cold process,implement"high tem-perature,fast rolling"measures,continuous casting and rolling process.The produc-tion of WY1 2 1 5 was smooth without bleed-out and rolling cracking in the converter con-tinuous casting production.The quality of casting billet is fine,and all performances of steel products meet the standard requirements;inclusions in steel are uniform distribu-tion,and more of them are Ⅰ type MnS which is taking on spherical or spindle shape and is good to machinability,with the microstructure ferrite and pearlite.