Which is better, casting or forging?Simply put, the wheel is a good casting or forging good, concise, do not make a whole, is the academic language do not understand.
According to the deformation temperature forging can be divided into hot forging (the processing temperature is higher than the billet metal recrystallization temperature), warm forging (lower than recrystallization temperature) and cold forging (room temperature). The forging materials are mainly carbon steel and alloy steel of various components, followed by aluminum, magnesium, titanium, copper and their alloys. The original state of the material is rod, ingot, metal powder and liquid metal. The ratio of the cross-sectional area of the metal before deformation to the die area after deformation is called the forging ratio. Proper selection of forging is of great importance to improve product quality and reduce cost. Casting: the process of melting metal into liquid, pouring it into a mold, cooling, solidifying, and cleaning to obtain the desired shape. It can make all kinds of objects of complex shape. Forged workpiece, delicate texture, toughness, like women, casting of the workpiece, shape, size, accurate, small processing, but black. The casting is formed by casting in the mold, and the forging is struck by heavy forging, and the stamping is made by die stamping at once.
Forging: the use of a forging machine to exert pressure on a metal blank to produce a plastic deformation in order to obtain a machining method having a certain mechanical property, a definite shape and a dimension. One of the two major components of forging. By forging can eliminate cast loose, metal welding holes, the mechanical properties of forgings generally better than the same materials of casting. In the machine, the important parts with high load and severe working conditions, in addition to the relatively simple rolling plate, profile or welding parts, more forgings are used. Forging according to forming method can be divided into: open forging (free forging). Using impact or pressure to make metal in the upper and lower two iron (anvil) between the deformation, in order to obtain the required forgings, mainly manual forging and mechanical forging two. Closed die forging. The metal blank can be divided into die forging, cold heading, rotary forging, extrusion and so on in the forging chamber of a forging die with a certain shape.
Forging: forging, metal after plastic deformation, a grain refinement in continuous fibers, so commonly used in key parts of Mao PI manufacturing, such as the axis, gear and so on. The casting has the requirement to be processed, and the casting properties of cast iron and aluminum are better. Do not have the advantages of casting forging, but it can make complicated shape of zero, so commonly used in mechanical performance requirements of supporting parts manufacturing Mao pi. For example, machine tools, housings, etc.. Forging: the use of hammering to make a metal material in a plastic state a workpiece of a certain shape and size, and change its physical properties. Cast: melt, melt, pour into a mold or mold, and cool into a utensil. Forging is making the metal into the shape you want (with cold and heat) Cast: melt the metal and pour it into a well made sand mold or mold. After cooling, it solidifies into the shape you want.
