Ceramic plunger moulding process

A technology of ceramic plunger and molding process, which is applied in the field of ceramic plunger molding technology, can solve the problems of lower production efficiency, waste of raw materials, increased motion friction resistance, etc., achieve the reduction of the process of lathe processing before sintering, and reduce the waste of processing Quantity, the effect of improving the ability to resist pressure

CN103102161AInactive Publication Date: 2013-05-15SUZHOU JINGCI SUPER HARD MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-05-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a ceramic plunger moulding process which is characterized in that the ceramic plunger is an aluminum oxide ceramic plunger for a pump. The process comprises the following steps of: taking ceramic granulating powder; then selecting a dry moulding die and adding the ceramic granulating powder to the dry moulding die to extrude and mould; then, placing into an isostatic pressing machine in batches for isostatic pressing treatment; then, re-sintering; and processing and moulding by a grinding machine in the later stage. The moulding process replaces the original process of directly machining, re-sintering and re-finish machining after isostatic pressing and moulding, so that the quality of the ceramic plunger is ensured, the anti-pressure ability is improved, the working allowance is reduced, the materials are saved, the step of machining before sintering is canceled, and the environmental cleanness of a workshop is ensured.
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Description

technical field

[0001] The invention relates to a forming process, in particular to a ceramic plunger forming process. Background technique

[0002] Ceramic plungers are used in plunger machinery in the petroleum, chemical, and food industries to replace metal plungers and solve the problem of short equipment life due to poor corrosion resistance and low working temperature resistance of metal plungers. ,

[0003] Ceramic plunger products have extremely high wear resistance, corrosion resistance and thermal shock resistance, and their service life is 5 to 10 times longer than that of metal plungers; it has been proved in oil fields that the use of ceramic plungers can not only greatly increase crude oil production, but also It can greatly reduce the consumption of plunger parts in the process of heavy oil collection, thereby reducing the cost of crude oil production.

[0004] Taking the technical transformation of the metering pump plug of the polymer station in the Xiaerm...

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Embodiment Construction

[0016] The present invention will be described in detail below with regard to specific accompanying drawings.

[0017] A ceramic plunger molding process, the ceramic plunger is an alumina ceramic plunger for pumps, the operation steps are:

[0018] a, select No. 99 ceramic granulation powder;

[0019] b. Select a dry pressing mould, add the selected ceramic granulation powder into the dry pressing mould, and extrude;

[0020] c. Put the dry-pressed semi-finished ceramic plunger into the soft bag mold, and then put it into the isostatic press, set the pressure to 100MPa-110MPa, and the static pressure time to 5-6 minutes;

[0021] d. Take out the ceramic plunger from the molding cavity of the isostatic press, put it into the sintering furnace and sinter it in four steps: figure 1 As shown, in the first step, within 13 hours, the temperature in the sintering furnace is raised from room temperature to 1250°C at a constant speed; in the second step, the temperature in the sinter...