Spherical Arc Longitudinal Split Ultra-High Pressure Mold

In order to improve the maximum bearing capacity of ordinary annual wheeled ultra-high pressure molds, a new spherical arc longitudinally split ultra-high pressure mold structure is proposed. Due to the spherical-arc structure, the circumferential tensile stress of the ultra-high pressure mold that has suffered the most damage is converted into axial stress. Then, the axial stress is reduced by the longitudinal division method, thus improving the ultimate bearing capacity of the ultra-high pressure mold cylinder. Spherical-arc longitudinal splitting of the ultra-high pressure mold can not only reduce the equivalent stress and the maximum tangential stress of the ultra-high pressure mold, but also greatly increase the cavity volume of the mold. The numerical analysis results show that: under the same load condition, the circumferential tensile stress, equivalent stress and maximum tangential stress of the spherical-type longitudinally split ultra-high pressure mold are lower than ordinary annual wheel-type ultra-high pressure molds by 68%, 12.5% and 18.0%, respectively. The radial displacement of the spherical-arc longitudinally split ultra-high pressure mold is also conducive to improving the pressure-holding capacity of the cylinder, and the cavity volume of the spherical-arc longitudinally split ultra-high pressure mold is also increased by about 43% compared to that of the ordinary annual wheel mold. The analysis shows that the spherical-arc longitudinal split structure helps to improve the production efficiency and mold life.