At present, the design of the processing matrix of the end cover die forging has been refined, so that the surface of the piston chamber has been changed from the original processing surface to the non-processing surface. The design of the end cover die forging matrix has a form of annular guide wall to improve the neutrality of the upper and lower matrices and reduce waste products. During the forging process, new technologies are used to double operate the machine and fire. The production practice shows that, The refined design and improved forging process have achieved good technical and economic benefits.

In the microstructure of the alloy die forging system heat treatment, many different effects have been studied. The software optical microscope and the image using the hot forging method have learned that its characteristics are that the temperature of the heating billet is higher than the phase transformation point and the mold temperature is lower than the phase transformation point. The microstructure of the hot die forging lacks uniformity, which is caused by the phase transformation and the uneven deformation of the microzone during the deformation process, The heat treatment system cannot completely remove the inhomogeneity of the microstructure of alloy die forgings.