Compared with castings, forgings have irreplaceable advantages. They have long service life which can not be reached by parts produced by other technical methods.
Moreover, the metal crystals in forgings are finer and more compact, and the forgings do not destroy the metal fibers of their raw materials and can make the metal lines smoother. These advantages of forgings are not meant to come by word, but mainly due to their strict technical requirements. The spare dimension of forgings should conform to international safety standards, and the material quality of forgings must be consistent with the material quality of parts. The chemical composition of forgings should also conform to the national unified standards and the material sheet should be issued.
There are also relevant requirements for the material quality of forgings, billets can not be used as forgings for forging processing. The parts of different shapes should also ensure a certain forging ratio. It is not allowed to use round steel of similar size in forging production. There are strict requirements for temperature, frequency and pressure in the process of forging. The shape of forgings also requires neatness and uniformity, and can not appear like skin folding and fracture.
