Grain size refers to the size of grains within the grain size crystal. Grain size can be expressed by the average area or average diameter of the grains. In industrial production, grain size is expressed by grain size grade. Generally, the larger the grain size, the finer the better. I hope that the following article can help you understand the grain size of forgings. I believe that everyone is familiar with the grain size of forgings, but you must not know much about the grain size of forgings.

The plastic deformation of forgings breaks the coarse primary dendrites, which plays an important role in grain refinement. On the other hand, there is a recrystallization process during high-temperature plastic deformation. During high-temperature plastic deformation, the grain size of the forging after recrystallization is determined by temperature, deformation degree and speed. Therefore, the grain size of forgings obtained by different forging processes is different.