What are the factors that affect the Forgability of forgings?

Forging of forgings is usually carried out in the hot state, so forging of forgings is actually a hot stress process of metal plastic deformation processing. Generally speaking, we will consider the quality of forgings by the two indicators of metal forming and deformation resistance.

For forgings, the first factor affecting their malleability is its material. Generally, pure metals are better than alloys, and alloy steels are better than high and low carbon high alloy steels. The ductility of forging is very poor when metal forgings are used in an organized way, and individual structures are more columnar, coarse grained and grain boundary segregation or eutectic structures than those cast by structures.

In addition, the processing conditions of forging plant should be considered, such as the temperature of forging forgings, which can increase ductility with the increase of temperature; once the temperature is close to the melting point, it will cause combustion, forging, and greatly reduce.

There is also the forging speed. On the one hand, with the increase of the deformation speed, the recovery and recrystallization process is too late to eliminate the work hardening, so the shape is reduced, the resistance is increased, and the ductility is poor. With the increase of deformation degree, on the other hand, the heat generated is the increase of moulding metal, the decrease of resistance and the improvement of ductility.

In addition, stress is also one of the factors affecting the Forgability of forgings. The higher the number of stress components, the better the forging materials are moulded. Emphasizing the number of components can reduce the requirement for plastics.

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