Then the factors affecting the forging ability of the first is the composition of metal, pure metal is better than alloy, low carbon steel is better than high carbon steel, low carbon steel alloy steel is better than high carbon high alloy steel; Harmful impurity elements generally deteriorate malleability. There is the use of metal forgings organization, single organization is better than to organization; The columnar structure, coarse grain structure, segregation on grain boundary or co-crystallization structure in cast state will make the forging ability worse. After the processing conditions should also be considered forgings factory: 1, deformation temperature: generally with the rise of deformation temperature, can improve the malleability of metal; When the temperature is close to the melting point, it will cause overburning, which is a sharp decrease in malleability. 2. Deformation speed: on the one hand, with the increase of deformation speed, the recovery and recrystallization process is too late to eliminate the work hardening phenomenon in time, so that the molding is reduced, the deformation resistance increases, and the malleability becomes poor. On the other hand, with the increase of the deformation speed, the thermal effect is produced, the metal's shape is increased, the deformation resistance is reduced, and is conducive to improving the malleability. 3, stress state: the more the number of tensile stress components, the better the forging material shape; The higher the number of compressive stress components, the lower the plastic requirement of the material.
here are real pictures of hook type forgings produced by Tongxin precision forging company