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Flange metal gasket and production equipment and production technology thereof

A technology for metal gaskets and production equipment, applied in mechanical equipment, engine sealing, engine components, etc., can solve problems such as leakage, reduce leakage rate, improve creep rebound rate and service life, and better sealing effect excellent effect

Active Publication Date: 2019-02-15
宁波新艺密封件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the above-mentioned flange gasket has a relatively good sealing effect, leakage will inevitably occur during long-term use and in some special occasions such as high pressure.
Especially under high pressure conditions, if its sealing effect fails under high pressure environment, it will cause serious leakage and even serious consequences

Method used

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  • Flange metal gasket and production equipment and production technology thereof
  • Flange metal gasket and production equipment and production technology thereof
  • Flange metal gasket and production equipment and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: A kind of flange metal gasket, such as figure 1 As shown, it includes a circular tooth-shaped metal framework 1 and flexible covering layers 2 arranged on both sides of the tooth-shaped metal framework 1 .

[0047] The tooth-shaped metal frame 1 is made of austenitic stainless steel whose chemical composition and mechanical properties meet the requirements of GB / T32809 and GB / T4237, and a plurality of tooth-shaped grooves 11 arranged in the same circle are arranged on both sides of the tooth-shaped metal frame 1. The tooth-shaped groove 11 forms a wave-shaped structure on the end surface of the tooth-shaped metal skeleton 1 .

[0048] Such as figure 2 As shown, along the diameter direction of the tooth-shaped metal skeleton 1, the depth of the tooth-shaped groove 11 is variable and can be set arbitrarily, that is, the parameters such as the depth and width of two adjacent tooth-shaped grooves 11 can be set to be the same, or can be Different, so that it...

Embodiment 2

[0051] Embodiment 2: as image 3 As shown, the difference from Embodiment 1 is that the depth of the tooth-shaped groove 11 is set regularly, and the depth is set gradually shallower from both sides to the middle.

[0052] Compared with Example 1, its structural setting makes the deformation of the flexible graphite gradual, and there will be no sharp changes that will cause the flexible graphite to be easily damaged, and it will not affect the creep back due to the shallow depth difference of the tooth-shaped groove 11. The increase in elasticity is not obvious.

Embodiment 3

[0053] Embodiment 3: as Figure 4 As shown, the difference from Embodiment 2 is that the angles of the toothed grooves 11 are the same, the spacing between the tooth peaks of the toothed grooves 11 is also the same, and any two adjacent toothed grooves 11 The groove depth difference is the same.

[0054] Compared with Example 2, its structural setting makes the deformation of flexible graphite more gentle, forming an overall regular deformation; combined with the setting of the same tooth crest spacing and the setting of the same angle of the tooth-shaped groove 11, the creep rebound rate The improvement is more obvious.

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Abstract

The invention discloses a flange metal gasket and production equipment and a production technology thereof. The flange metal gasket comprises a tooth-shaped metal skeleton. The depth of tooth-shaped grooves in the two sides of the tooth-shaped metal skeleton is set in a varying manner. In the using process, flexible graphite will be embedded into the tooth-shaped grooves, due to the difference between the depths of wave teeth, the compression degrees of the flexible graphite in the different wave teeth are different, namely, the flexible graphite deforms differently in the different wave teeth, due to the fact that the flexible graphite keeps the deformation state in the using process, the creepage rebounding rate of the graphite can be increased, and then the service life of the flexiblegraphite is prolonged. Meanwhile, the depths of the tooth-shaped grooves are set differently, therefore, in the using process, the sealing effect becomes more excellent correspondingly, leakage in theusing process is reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of flange sealing, in particular to a flange metal gasket and its production equipment and production process. Background technique [0002] The authorized announcement number is CN 205877502 U, and the Chinese patent application date is July 19, 2016 discloses a new type of flange gasket, which includes a toothed metal skeleton and flexible graphite layers on both sides of the toothed metal skeleton , when in use, under a certain pre-tightening stress, the special-shaped concentric grooves on the upper and lower surfaces of the tooth-shaped metal skeleton will be closely bonded with the flexible graphite layer to achieve a preliminary seal, while the tooth-shaped metal skeleton The mutually staggered wave-tooth structure can realize multiple seals of the gasket. [0003] Although the above-mentioned flange gasket has a relatively good sealing effect, it still inevitably leaks during long-term use and when used in so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/06B23P15/00
CPCB23P15/00F16J15/06
Inventor 宋国胄
Owner 宁波新艺密封件有限公司
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