Isostatic mold parts and an annular molding method

The present invention discloses an isostatic mold parts and an annular molding method, a mold comprising a support base assembly, a centrally located support table, the lower die set, the outer diameter of the annular cavity, the inner diameter of the forming ring assembly, the upper mold chase and hold means connected to the lower die set is positioned to match the center position the support table; the outer diameter of the annular cavity with an inner diameter of the ring shaped assemblies disposed respectively corresponding to the lower die set corresponding to the mounting position, and the outer diameter of the annular cavity circle ring inner diameter is formed between the annular space forming assembly; sleeve disposed in the upper mold cavity with an inner diameter of the annular ring forming the outer diameter of the top of the assembly, and joined together by means hold the lower die sleeve, the upper mold and the lower mold chase sleeve to form an internal cavity closed annular cavity; said upper mold vacuum system provided with a closed sleeve means. Other parts by molding the ring mold and a molding obtained by the method of hydrostatic annular cylindrical surface part, the upper and lower end surfaces each having a shape and high dimensional accuracy, and good mechanical properties.