Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Graphitic stationary ring for mechanical seal device and manufacturing method thereof

A technology of mechanical sealing device and manufacturing method, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., and can solve the problems of static ring fragmentation, waste of time for finished products, embrittlement and fragmentation, etc.

Inactive Publication Date: 2020-02-14
蒋立宪
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the static ring of the friction pair made of graphite material has a fatal weakness, that is, its mechanical strength is very low, it is very fragile, and it is easy to be brittle and broken under uneven pressure conditions.
Many manufacturers and users of mechanical seals have the same personal experience, that is, during the transportation and transshipment process of the mechanical seal static ring made of graphite material, it is very easy to be cracked, brittle or broken by external force during loading and unloading. In addition, the manufacturer or user may cause the static ring to break and become a waste product due to a slight improper force during the assembly and installation of the mechanical seal, resulting in waste of finished products and loss of time.
This has been a headache in the industry, and no more effective solution has been proposed so far

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Graphitic stationary ring for mechanical seal device and manufacturing method thereof
  • Graphitic stationary ring for mechanical seal device and manufacturing method thereof
  • Graphitic stationary ring for mechanical seal device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0011] Embodiment: Manufacturing process flow of a graphite stationary ring for a mechanical seal device with an outer diameter of 80 mm, an inner diameter of 20 mm, and a thickness of 10 mm. First adopt the machining method to produce the square cross-section iron-nickel alloy ring, its size specification is: outer diameter 60mm, inner diameter 50mm, thickness 4mm, spare; take a proper amount of nylon 202 sealant, take a proper amount of flexible graphite, and Mix the two evenly and put them in the ring mold. At the same time, put the spare square-section iron-nickel alloy ring in the mixed graphite. At this time, you must pay attention to the operation of putting the iron-nickel alloy ring in the mixing The central part of a good graphite material; then, put the mold in an oven and bake it at 80°C for 15 minutes; then take it out and press it into a ring-shaped graphite stationary ring blank under a pressure of 100Mpa; Put the graphite static ring blank in the oven and bake ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a graphitic stationary ring for a mechanical seal device and a manufacturing method thereof. The graphitic stationary ring for the mechanical seal device is composed of a metal, graphite, an adhesive and a friction surface indenture. The metal is a ferronickel alloy. The coefficient of linear expansion of the alloy is 0.5*10<-6> which is far lower than the coefficient of linear expansion of the alloy: 4.5*10<-6> of the stationary ring of specification and standard request, so that the stationary ring fully meets the operating requirement. The adhesive can be an organicadhesive or other adhesives. The manufacturing process comprises the following steps: putting a ferronickel alloy metal ring or metal sheet, graphite uniformly mixed in a specified proportion and theadhesive in a mold to be pressed and formed; putting the pressed and molded graphitic stationary ring at a high temperature to be heated and cured; and then engraving indentures of different dimensions in a friction working surface of the graphitic stationary ring by a special processing device after standing is carried out.

Description

technical field [0001] The invention relates to a graphite static ring for a mechanical sealing device and a manufacturing method thereof. Background technique [0002] At present, the materials commonly used for the static rings in the friction pairs of mechanical seals are mostly graphite materials. Graphite is the most widely used material for friction pairs in the mechanical seal industry. It has good self-lubricating properties, low friction coefficient, excellent corrosion resistance, excellent thermal conductivity, low linear expansion coefficient, excellent combination performance and temperature resistance. Easy processing and other characteristics, therefore, its application range is extremely wide, and the number of applications is extremely large. However, the static ring of the friction pair made of graphite material has a fatal weakness, that is, its mechanical strength is very low, it is very fragile, and it is easy to be brittle and broken under uneven press...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/34B29C67/24
CPCF16J15/3496B29C67/24
Inventor 罗阳王妍蒋立宪张明光娄彧琦曲冠星蒋锵孙小聃孔维晨
Owner 蒋立宪
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com