Isostatic pressing forming method and forming mold for ceramic roller bars

Abstract

The invention discloses an isostatic pressing forming method and forming mold for ceramic roller bars, and relates to the field of isostatic pressing forming. The isostatic pressing forming mold comprises a bottom plate, a feeding assembly, an outer mold, an inner mold, a pressurizing assembly, a movable block, a pushing assembly, a fixed block, a first hydraulic bag, a second hydraulic bag, an exhaust pipe and feeding pipes, wherein the feeding assembly is mounted at one end of the top side of the bottom plate, the fixed block is installed on the top side of the bottom plate, the movable block is installed on the pushing assembly, and the inner mold is fixedly connected to the movable block. Through the arrangement of the feeding assembly, materials in a material hopper enter a feeding cylinder through a material guiding pipe, when a piston disc descends, the materials are discharged through discharging pipes, under the cooperation of six feeding pipes, filling of the materials can beachieved; the gap between the outer mold and an inner mold can be filled, through one-way injection material filling, gas mixing is reduced, the gas content is reduced, the compactness of blanks is improved, and through guide-in and synchronous filling of the six discharging pipes arranged in a surrounding mode, uneven material filling is avoided, and filling is more balanced.

Description

technical field [0001] The invention relates to the field of isostatic pressing, in particular to an isostatic pressing forming method of a ceramic roller and a forming mold thereof. Background technique [0002] Isostatic pressing is to place the sample to be pressed in a high-pressure container, and use the incompressible properties of the liquid medium and the properties of uniform pressure transmission to uniformly pressurize the sample from all directions. When the liquid medium is injected into the pressure vessel through the pressure pump , according to the principle of fluid mechanics, the pressure is constant and uniformly transmitted to all directions. At this time, the pressure on the powder in the high-pressure container is uniform and consistent in all directions. The method of forming a dense green body from barren powder by the above method is called isostatic pressing; [0003] In the process of isostatic pressing, it is usually formed by hydraulic extrusion...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a ceramic roller bar isostatic pressing forming method and its forming die, which solves the problem that when the powder is extruded, it is easy to be unevenly stressed, resulting in uneven overall compactness after the blank , technical issues affecting product quality

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