铸态高强高韧性QT600-10合成球铁的研制

Development of high strength,high-toughness cast QT600- 10 synthetic ductile iron

采用废钢增碳技术,利用合金化元素Cu和Sn强化基体组织,通过完善球化、孕育处理等工艺措施,制备出铸态QT600-10高强高韧性球墨铸铁。试验表明:采用废钢增碳生产合成球铁,选择合适的化学成分,其铸态抗拉强度≥600 MPa,断后伸长率≥10%。

Using waste-steel recarburization technique and enhancing the cast matrix with alloying elements of Cu-Sn,high strength,high-toughness cast QT600- 10 synthetic ductile iron was produced through strengthening spheroidization and inoculation treatment. Experimental results show that choosing appropriate chemical composition,the as cast tensile strength and the elongation of the cast QT600- 10 synthetic ductile iron is higher or equal to 600 MPa,and is higher or equal to 10%,respectively.