“Casting to forging” refers to the production of parts originally processed by casting process and replaced by forging process. In the past, because the casting process has the advantages of low price and high production efficiency, it has been widely used in the field of parts production. But with the continuous progress of science and technology, more and more people find its drawbacks, so put forward the concept of “casting to forging”.
First of all, “casting to forging” can improve the material quality of parts. The internal structure of the parts formed by casting process is relatively loose, and there will be defects such as pores and inclusions. The parts produced by the forging process have better mechanical properties such as strength and toughness due to the dense internal organization and fine grains, and the grain boundaries are tighter. At the same time, forging can also effectively remove the oxide, burr and other pollutants on the surface of the parts, so as to improve the surface quality of the parts.
Secondly, “casting to forging” can improve the accuracy and dimensional stability of parts. During the casting process, due to the good fluidity of the liquid metal, it is easy to be affected by gravity and air flow, so it is difficult to ensure the accuracy and dimensional stability of the parts in the manufacturing process. The forging process can achieve higher precision requirements through die assisted processing, which can produce more accurate parts.
Third, “casting to forging” can also improve the resistance of parts under high temperature conditions. Under high temperature conditions, due to the dense structure and small grain size of the parts processed by the forging process, the stress in the internal dislocation, grain boundary and other defects is relatively small, and the tolerance of the parts under high temperature conditions is correspondingly improved.
Finally, “casting to forging” also has significant significance for the protection of the environment and resources. In the casting process, the heating fuel and the harmful gases emitted during the production process will have a negative impact on the environment. The forging process uses electric energy and gas for processing, and the waste gas and waste water in the production process are relatively small, which meets the needs of modern society for environmental and resource protection.
In short, “casting to forging” can improve the material quality, accuracy and dimensional stability of the parts, as well as the resistance. Moreover, it also has significant significance in the protection of environment and resources. Therefore, casting and forging as a new production process is gradually being widely used in various fields.
