The main material of the eyewash is steel, and the eyewash is made of steel. The eyewash contains pig iron, and the carbon in the eyewash is mainly in the form of iron carbide. The section of the eyewash is white, and it is usually called the white iron eyewash. This kind of eyewash is hard and brittle.
　　The carbon in the cast eyewash is in the form of flake graphite. The fracture of the eyewash is gray, and it is usually called the gray eyewash. Because graphite is soft and has the function of lubricating the eyewash, the cast eyewash has good cutting, wear resistance and casting properties. However, the anti-position strength of the eyewash is not enough, so it cannot be forged and rolled. It can only be used to make various eyewash castings, such as casting various eyewash holders.
The eyewash is in the form of spherical graphite. The mechanical performance of the eyewash is far better than that of gray iron and close to steel. The eyewash has excellent casting, cutting and wear resistance, and has a certain degree of flexibility. It is widely used in the manufacture of crankshafts and gears. , Pistons and other high-grade castings and a variety of mechanical parts.
　　 In addition, the eyewash also contains silicon, manganese, nickel, called alloy eyewash, such as ferrosilicon, ferromanganese, etc., which are commonly used as raw materials for the eyewash. Adding certain alloy pig iron during steelmaking can improve the performance of the eyewash.
The iron-carbon alloy of the eyewash with carbon content greater than 2%. The carbon content of the industrial eyewash is generally 2%-4.3%, and contains C, SI, Mn, S, P and other elements. The eyewash is made of iron ore. Blast furnace smelting. According to the different forms of carbon in the eyewash, it can be divided into pig iron eyewash, cast eyewash and spherical ink eyewash.