What is the difference between cast crankshaft and forged crankshaft? What advantages do they have?
First of all, casting can be formed at one time, forging needs forging, and subsequent heat treatment methods are also different.The advantage of casting a relatively easy, forging molding process is more complex, but in recent years the development of technology, the emergence of large hydraulic machine, forging and hot die forging process of continuous improvement, can make the forging is relatively easy.
The same size and shape of the casting and forging crankshaft in terms of the mechanical properties, forging because of its fiber shape along the streamline distribution, high density, there is no sand casting defects such as pore, because of its high strength, good toughness, but the manufacturing cost is higher than that of casting.
The internal organization, casting no stable microstructure and mechanical properties of casting forging, there will be a series of loose sand, segregation and other defects; forging structure can be made uniform, the raw material defects defects elimination etc..
