Malleable cast iron uses

Malleable cast iron is a metal material used in automobiles. A white blank is cast from molten iron with a certain chemical composition. After graphitization and annealing, the graphite is mainly in the form of floc, floc, and sometimes a small amount of spherical cast iron. Compared with gray cast iron, malleable cast iron has higher strength, toughness and impact toughness. Malleable cast iron is divided into four categories: black-core malleable cast iron, pearlitic malleable cast iron, white-core malleable cast iron and ductile graphite malleable iron based on chemical composition, heat treatment process, performance and structure. At present, more than 90% of the malleable iron produced in China is black-core malleable iron. The other three types of malleable cast iron have fewer applications. Black-core malleable cast iron is not very strong, but has good plasticity and toughness. Malleable cast iron is mainly used in automobile rear axle housings, steering mechanisms, low-pressure valves, pipe joints and other parts subject to impact and vibration.