影响锻件可锻性的因素有哪些 What are the factors that affect the forging of forgings
The forging of the forging is usually carried out in a hot state, and the forging of the forging is the process of shaping the metal in a hot state subjected to pressure processing. Forging plant forging the advantages and disadvantages of commonly used metal shaping and deformation resistance to the two indicators to consider.
Then the factors that affect the forging of the first thing is the metal composition, pure metal is better than the alloy, low carbon steel is better than high carbon steel, low carbon steel alloy steel is better than high carbon high alloy steel; harmful impurities generally make malleable Bad. There is a metal for the use of forging organization, the organization is better than want to organize a single organization; as the column under the column structure, coarse grain structure, grain boundary segregation, or a total of crystalline structure will make forging mismatch worse. Finally, we should also consider the processing conditions of the forging plant: 1, deformation temperature: generally with the deformation of the temperature rise, can improve the malleability of the metal; when the temperature close to the melting point, it will cause burning, is a sharp reduction in malleability. 2, the deformation speed: on the one hand with the increase in the speed of deformation, recovery and recrystallization process too late, can not promptly eliminate the phenomenon of hardening, so that shaping down, deformation resistance increases, malleable deterioration. On the other hand, with the increase of the deformation speed, the thermal effect is caused by the increase of the shape of the metal, the decrease of the deformation resistance and the improvement of the malleability. 3, the stress state: the greater the number of tensile stress components, the better forging the material forging; the number of compressive stress components, can reduce the plastic requirements of the material.