Ceramic plunger moulding process

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.

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...

AI Technical Summary

Problems solved by technology

[0005] The production and processing technology used by the existing ceramic plunger is: first, select ceramic granulation powder and pour it into a soft mold, and carry out isostatic pressing molding by an isostatic press; second, the semi-finished ceramic plunger is passed through a car Processing, remove the margin left during molding, thirdly, place the semi-finished product processed by the car into the sintering furnace for 3 hours of high-temperature sintering, fourthly, carry out finishing treatment in the later stage; the existing ceramic plunger is in the process of use There are great defects in: 1. The ceramic body has cracking phenomenon. This kind of cracking is not easy to detect during the manufacturing process of the ceramic body, but when the plunger is working, due to the internal stress, the cracks are getting bigger and bigger, causing the workpiece to be scrapped. ; 2. The surface finish of the plunger is not enough, resulting in increased motion friction resistance and reduced production efficiency; 3. There is a large amount of margin between the lathe processing, resulting in a large amount of dust in the processing workshop, which affects the air quality of the processing workshop; 4. Car processing causes a large waste of raw materials

Images