Ceramic plunger is a key component widely used in chemical, petroleum, machinery and other industries. It has excellent properties such as high hardness, high wear resistance and corrosion resistance, and can run stably for a long time in harsh working environment. In order to ensure the quality and performance of ceramic plunger, it is very important to establish the technological standard of ceramic plunger.

Performance characteristics of ceramic plunger

Ceramic plungers have the advantages of high hardness, high density, high toughness, high temperature stability, good corrosion resistance, dimensional stability, etc., and are widely used in hydraulic, pneumatic and mechanical equipment. Ceramic plungers can withstand large pressure and friction in use, and have extremely high wear resistance and impact resistance, which can improve the service life of the equipment.

Material selection

There are many kinds of ceramic plunger materials, such as alumina, silicon nitride, zirconia and so on. In the formulation of machining standards, appropriate materials should be selected according to the actual use environment. At the same time, the chemical composition, physical properties, crystal structure and other indicators of ceramic materials are required to meet the requirements of the standard.

Molding machining

The ceramic plunger is usually formed by pressing, injection molding, extrusion molding and so on. When formulating the machining standard, factors such as molding pressure, molding temperature and molding time need to be considered, and the dimensional accuracy and surface finish after molding can meet the standard requirements.

Sintering machining

Sintering is a key machining link, in the formulation and implementation of machining standards need to strictly control the sintering temperature, sintering time and sintering atmosphere and other factors to ensure that the sintered ceramic plunger has excellent performance and good shape accuracy.

Finishing technology

In the finishing machining of manufacturing ceramic plungers, CNC machining, grinding, polishing and other methods are usually used. Factors such as machininging accuracy, surface finish, and machining flow need to be considered in the formulation of machining standards to ensure that the final ceramic plunger products meet the relevant standards and requirements.

In the machininging of the first stainless steel parts need top pinholes, this step is the basis of the entire product concentricity and finish. The top pinhole must fit perfectly with the thimble, which can be achieved by grinding.

The ceramic body and the stainless steel body are filled with resin glue, and after the glue solidifies and has a certain strength, the cylindrical machininging begins. The blank of the plunger is fixed with a double thimble on the external grinding machine, and the outer circle of the plunger is ground with a diamond resin grinding wheel until the margin is about 0.1mm.

After grinding is completed, the ceramic plunger is polished to the specified size with an external circular polisher. There are two kinds of polishing machininges: one is the rigid polishing method, which is polished with w grade diamond powder; The second is a flexible polishing method, which uses soft objects to polish high-hardness objects.

Quality inspection

In the machining of manufacturing ceramic plungers, it is necessary to establish a sound quality management system, and regularly carry out quality testing and monitoring to ensure the stability and reliability of products. The method of quality inspection and evaluation criteria should be included in the standard system when the machining standard is formulated.

Ceramic plunger is an important key component, and its manufacturing machining requires strict control of the quality and standards of each link. The development and implementation of ceramic plunger technology standards can effectively improve the quality and performance of ceramic plunger, reduce the cost and risk in the production machining, is a very meaningful work.

Ceramic plunger is mainly made of ceramic body and stainless steel body bonding, mainly used in petroleum, chemical, food industry, to replace the metal plunger, to solve the metal plunger because of poor corrosion resistance, low working temperature caused by short equipment life problems.