Production technology for high-precision polytetrafluoroethylene globular product for pneumatic diaphragm pump
A pneumatic diaphragm pump, PTFE technology, used in applications, household components, household appliances, etc., can solve the problems of single process, low efficiency, unstable product quality, etc., to improve accuracy and brightness, improve uniform density, Reliable effect of ovality
Inactive Publication Date: 2017-11-03
广州市东泓氟塑料股份有限公司
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- Application Information
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Problems solved by technology
Compared with developed countries in Europe and the United States, the production process of domestic PTFE spheres is still at a very low level. The process is single, the efficiency is quite low, and the product quality is unstable.
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Embodiment
[0021] A production process of high-precision polytetrafluoroethylene spherical products for pneumatic diaphragm pumps. The production process includes the following steps:
[0022] 1) Raw materials sieving: PTFE powder raw materials are easy to solidify and block. First store the PTFE powder raw materials in a refrigerated room for storage. After 24 hours, use a masher to break it and pass through an 80-mesh screen. Remove uneven pellets, the temperature of the refrigerated room is 19-23°C, and the raw material of the polytetrafluoroethylene powder is polytetrafluoroethylene modified suspension resin;
[0023] 2) Die-casting blanks: In a dust-free environment, the sieved pellets are die-casted with an empty mold under a four-column hydraulic press. A die-casting cycle is 15-20min;
[0024] 3) Isostatic die-casting blank: In a dust-free environment, the hydraulic die-casting blank is put into a dense rubber holster, and die-casted on a hydraulic press with uniform pressure. A die-cas...
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Abstract
The invention provides a production technology for a high-precision polytetrafluoroethylene globular product for a pneumatic diaphragm pump. The production technology for the high-precision polytetrafluoroethylene globular product for the pneumatic diaphragm pump comprises the following steps of (1) sifting of raw materials; (2) die-casting of a workblank; (3) die-casting of the workblank in an equal pressure; (4) sintering of the workblank; (5) turning of a ball body; and (6) grinding. The production technology for the high-precision polytetrafluoroethylene globular product for the pneumatic diaphragm pump has the advantages that the production technology steps are reasonable, the product quality is stable, product density is uniform, and working efficiency is improved.
Description
Technical field [0001] The invention relates to a production process of polytetrafluoroethylene spherical products, in particular to a production process of high-precision polytetrafluoroethylene spherical products for pneumatic diaphragm pumps. Background technique [0002] Pneumatic diaphragm pump is a new type of conveying machinery, and it is currently the most novel type of pump in China. Using compressed air as the power source, all kinds of corrosive liquids, liquids with particles, high-viscosity, volatile, flammable, and highly toxic liquids can be exhausted. Due to the above characteristics of pneumatic diaphragm pumps, diaphragm pumps in the world have gradually invaded the market of other pumps since their birth, and occupy a part of them. For example, the diaphragm pump has an absolute dominant position in the painting and ceramic industries, while in some other industries, such as environmental protection, wastewater treatment, construction, sewage, and fine chemic...
Claims
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IPC IPC(8): B29C69/00B29C43/02B29C43/12B29C67/04B29B13/10B29K27/18B29L31/00
CPCB29C69/00B29B13/10B29C43/02B29C43/12B29C67/04B29C69/001B29K2027/18B29L2031/7506
Inventor 吴东建
Owner 广州市东泓氟塑料股份有限公司