What are the articles made of pig iron? Common examples?
Pig iron, steelmaking, pig iron, casting pig iron, nodular pig iron;Carbon steel-making pig iron mainly exists in the form of iron carbide, the white section, usually called white iron. The pig iron is hard and brittle, and is generally used as raw material for steelmaking.
Cast iron in carbon flake graphite form exists, its fracture is gray, usually known as gray iron. Because of its soft and lubricated graphite, casting pig iron has good cutting, wear resistance and casting properties. But its resistance to strength is not enough, it can not be forged, and can only be used to make a variety of castings, such as casting all kinds of machine tools, bed seats, iron pipes and so on.
Ductile iron to carbon in the form of spherical graphite, which is far better than the mechanical properties of gray cast iron and close to steel, it has excellent casting, machining and wear resistance, has a certain flexibility, widely used in the manufacture of gear, crankshaft, piston and a variety of advanced casting machine parts.Before, kitchen knives, hoes, sickle, pencil sharpener and so on are all pig iron, and now are generally stainless steel, pig iron rarely.
