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Silicon carbide friction pair used for non-contact mechanical seal and manufacturing method thereof

A technology of mechanical seals and manufacturing methods, which is applied in the direction of engine seals, mechanical equipment, engine components, etc., and can solve problems such as economic losses and safety accidents for users

Inactive Publication Date: 2014-03-26
辽宁天泽产业集团机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially for users whose sealed media are flammable, explosive, highly corrosive, or valuable substances, if leakage occurs during operation, it will cause major economic losses and serious safety accidents to users

Method used

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  • Silicon carbide friction pair used for non-contact mechanical seal and manufacturing method thereof

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Embodiment

[0008] Example: A process flow for manufacturing uniformly distributed spiral grooves on the static ring friction surface of a silicon carbide friction pair with an outer diameter of 50 mm, an inner diameter of 20 mm, and a thickness of 150 mm. Prepare the static ring of the silicon carbide friction pair of the above-mentioned size and specification first. The laser processing system is selected, and the laser processing system is composed of a laser part, a galvanometer scanning head, a control system and a computer. The laser part consists of a solid-state laser and a laser power supply, which are continuously pumped. The working substance is Nd:YAG, and the wavelength is 1.06μm. The scanning head is composed of a vibrating mirror and a flat-field focusing mirror that can vibrate orderly in the X and Y two-dimensional directions. The width of the engraved line is less than 100μm, and the resolution is 1.7μm, which fully meets the processing requirements. YAG laser power i...

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Abstract

The invention relates to a silicone carbide friction pair used for a non-contact mechanical seal and a manufacturing method of the silicon carbide friction pair. Concave points or geometry-shaped grooves are evenly distributed in the friction end face of the silicon carbide friction pair used for the mechanical seal, and the depth of the groove can be evenly changed gradually. The concave points or the geometry-shaped grooves evenly distributed in the friction end face of the silicon carbide friction pair are manufactured through laser processing.

Description

technical field [0001] The invention relates to a silicon carbide friction pair for a non-contact mechanical seal and a manufacturing method thereof. Specifically, the silicon carbide friction pair manufactured by the method can be used in various mechanical sealing devices. Background technique [0002] The contact mechanical seal refers to a mechanical seal that relies on the elasticity of the elastic element and the pressure of the sealing fluid to make the sealing end face tightly fit. The mechanical seal of contact friction relies on the friction pair, that is, the close contact between the end faces of the moving ring and the static ring will seal the medium to be sealed. When the working conditions or environmental conditions change, the excessive temperature rise of the end faces will vaporize the fluid between the end faces, causing serious leakage, or all the liquid on the end faces will vaporize, resulting in complete dry friction between the end faces, which wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/26
Inventor 蒋立宪
Owner 辽宁天泽产业集团机械制造有限公司
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