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Manufacturing method of sealing gasket

A manufacturing method and technology of sealing gaskets, which are applied in the directions of engine components, piston rings, mechanical equipment, etc., can solve the problems that metal sealing gaskets cannot form a complete seal and have poor sealing effect, and achieve good sealing performance, reduce requirements, and improve The effect of softness

Active Publication Date: 2009-03-11
NINGBO TIANSHENG SEALING PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the disadvantages that the above-mentioned metal sealing gasket cannot form a full seal when used, resulting in poor sealing effect, and to provide a sealing gasket with complete integral sealing and good effect and its manufacturing method

Method used

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  • Manufacturing method of sealing gasket

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Embodiment

[0012] With reference to accompanying drawing, manufacturing method of the present invention comprises steps as follows: a, cut metal ring according to size requirement: inner ring 1, outer ring 3; b, according to the compression ratio of graphite plate and the density of spacer, cut out the width of graphite band : c. Select a suitable mold according to the required size of the gasket; d. Wrap the graphite tape round by round into the mould, and the corresponding joint parts of the graphite tape wound into the mould are misaligned with each other, and the graphite ring 2 is pre-pressed; e , The inner ring, the outer ring and the graphite ring are molded and nested with a mold; f, demoulding; g, trimming and shaping.

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Abstract

The present invention relates to a method for preparing gasket seal. Said preparation method includes according to size requirement cutting metal ring; according to compression ratio of graphite plate and density of gasket cutting out width of graphite tape, according to the specification size required for gasket selecting proper mould; placing the graphite tape into the mould by turns and prepressing graphite ring; moulding the metal ring and graphite ring by means of mould and nesting metal ring with graphite ring together; demoulding; and edging and shaping so as to obtain the gasket seal.

Description

technical field [0001] The invention relates to a method for manufacturing a sealing gasket. Background technique [0002] Existing metal wound gaskets are formed by intertwining metal strips and graphite strips. Since the metal strips have tooth shapes when cut, they cannot form a comprehensive seal when used, so there is a certain amount of leakage (≥1×10 -3 ml / sel); and the metal band in it is easy to damage the flange sealing surface, resulting in reduced sealing performance. In addition, there are potential dangers in some special industries (such as nuclear power hydrogenation units, etc.). Contents of the invention [0003] The purpose of the present invention is to solve the disadvantage that the above metal sealing gasket cannot form a full seal when used, resulting in poor sealing effect, and provide a sealing gasket with complete integral sealing and good effect and its manufacturing method. [0004] For this reason, the present invention takes the following t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J9/00F16J9/26
Inventor 励行根
Owner NINGBO TIANSHENG SEALING PACKING