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Stamping is the forging method of using mould to form forging on special die forging equipment. According to different equipment, die forging is divided into hammer die forging, crank press die forging, flat forging machine die forging, friction press die forging, etc. Roll forging is the plastic forming process that metal become plastic deformation under the action of a pair of reverse rotating dies.It is a special form of forming rolling.
Forging is the forging processing method by using the forging machinery on metal blank, making it deformated to obtain the certain mechanical properties, shape and size of forging processing method. By forging, it can eliminate the the defects such as loose casting in the process of smelting, optimize the microstructure, and the mechanical properties of forgings are generally superior to those of the same materials due to the preservation of the complete metal streamlines. The important parts with high load and severe working conditions in the relevant machinery, except for the simple shape of rolled plate, profile or welding parts, most use forgings.
Rolling refers to the process of forming a metal ingot through a pair of rollers.If the temperature of the metal exceeds its recrystallization temperature, the process is called "hot rolling" otherwise it’s called "cold rolling". Calender is the most commonly used method in metal processing.