Research on properties and quality stability of low temperature ferritic ductile iron

Production technology of low temperature ferritic ductile iron, including chemical composition, metallographic structure, mechanical properties and control of production process. Successfully produced low-temperature ferritic ductile iron with tensile strength of 400 MPa, elongation of 18%, impact energy greater than 12 J at 40 ℃, 50 ℃ and 60 ℃, meeting the requirements of users