The Heat Treatment Process Of Ductile Iron

- Dec 10, 2019-

The heat treatment process of Ductile iron


When the shape of the casting is complex, high strength and good plasticity and toughness are needed, isothermal quenching is needed. The isothermal quenching is to heat the casting to 860-920 ℃ (austenite area), properly heat preservation (heat penetration), quickly put it into a 250-350 ℃ salt bath furnace for 0.5-1.5h isothermal treatment, and then take it out for air cooling. Isothermal quenching can prevent deformation and crack and improve the comprehensive mechanical properties of castings.