Brief Introduction Of Casting Production Process

Brief Introduction Of Casting Production Process

Cast iron is often used to make frames, beds, boxes, crankshafts, cylinder liners and so on. It is the most important liquid forming alloy among engineering materials. White cast iron structure contains

A large quantity of Leidite, its properties are hard and brittle, difficult to machining. This kind of cast iron has high strength and hardness and is mainly used to make more important parts. But the presence of graphite also makes

Gray cast iron has good shock absorption, wear resistance and low notch sensitivity, which is not possessed by steel. Moreover, gray cast iron has good casting and cutting properties

Mechanical performance, but poor welding performance, and can not be used for forging. Therefore, the microstructure and properties of cast iron mainly depend on the degree of graphitization.

1. Classification of cast iron

cast iron is usually an iron-carbon alloy with w (C) = 2.5% ~ 4.0%.

Cast iron is often used to make frames, beds, boxes, crankshafts, cylinder liners and so on. It is the most important liquid forming alloy among engineering materials. Depending on the form of carbon in cast iron,

Cast iron can be divided into:

Except for a very small amount of carbon dissolved in ferrite, all the carbon in white cast iron exists in the form of Fe3C, with silvery white fracture

Color, so called white cast iron. White cast iron contains a large amount of Letenite, which is hard and brittle and difficult to be machined. Therefore, it is rarely used in industry to make machines

Parts, mainly used as raw materials for steelmaking or blanks for making malleable cast iron. Because of its good wear resistance, white cast iron is sometimes used to make some wear resistant parts, such as rolling

Roller, crusher hammer, lining board, ball mill and plow share, etc.

Most or all of the carbon in gray cast iron exists in the form of graphite, except for a little soluble in ferrite. It is named for its dark gray fracture.

It is the most widely used cast iron in industry.