The processing of stop die forgings can use the detection instrument controlled and understood by the computer, or use the optical comparator optical projector to carry out dimensional inspection to ensure the accuracy of the inspection results. Therefore, relevant samples are cut from the die forgings taken from the same furnace and the same heat treatment furnace, and the detection of surface defects is also a part of the quality inspection of die forgings. The fluorescent test of magnetic particle dust inspection is used to determine the quality of the film and alkali acid surface, Based on the characteristics of mechanical properties of die forgings, the advantages and disadvantages of mechanical properties of die forgings were found.

After the formation and heat treatment of the workpiece, the residual stress remains inside. During the processing, the residual stress is gradually released, resulting in the unqualified deformation of the workpiece. Taking the forged aluminum alloy matrix as an example, the internal residual stress is detected on the forged surface to reveal the state and distribution of the residual stress.