Shaft forgings occupy an important position in forgings and are widely used in mining machinery, petroleum machinery, chemical machinery, etc. Shaft forgings are often used as the basic parts of equipment and the core parts of mechanical equipment, which have higher quality requirements, so the forging process requirements are also more stringent. In order to meet the performance requirements of shaft forgings, in the process of producing forgings with forging hydraulic press, it is necessary to constantly measure their diameters, and then feed the results back to the control system, which can adjust the pressing volume of the press to obtain the final size of forgings. Generally, shaft forgings are completed in the following three stages. The first stage: forging and compaction are required for loose and porosity defects of steel to obtain forged microstructure, meet mechanical properties requirements. The second stage: complete forging of internal porosity defects to prevent new internal cracks. The third stage: control the generation of mixed crystal. The forging process of shaft forgings should be as simple as possible, with less heat and no upsetting. To effectively separate the forging compaction from the final forging forming. As a forgings manufacturer, Henan Shuanzhi produces all kinds of mining machinery forgings, petroleum mechanical forgings, chemical mechanical forgings, etc.