Metal tube and ring rolled seal gasket and manufacturing method thereof

Abstract

The invention relates to a metallic tube ring rolling sealing pad and relative producing method. Said pad comprises a circular metallic tube, the flexible sealing stuff inside the inner chamber of metallic tube, and the coat on the surface of metallic tube, while the metallic tube is clamped between the coat outer ring and coat inner ring. The producing method comprises: 1, filling the flexible sealing stuff into the inner chamber of metallic tube; 2, bending said metallic tube into ring; 3, welding two ends of metallic tube to form the sealing tube; 4, die molding, and coating the coats on the upper and lower surfaces of metallic tube; 5, rolling the coat ring on the inner and outer rings of metallic tube. Via controlling the density of stuff, the compression and the flexible rate of sealing pad can be adjusted. And via coating inner and outer rings, the denudation of stuff on the sealed material can be insulated to prolong the service life and it has small transverse space to apply the installment.

Description

technical field [0001] The invention relates to a sealing gasket and a manufacturing method thereof, in particular to a metal pipe ring rolling sealing gasket and a manufacturing method thereof. Background technique [0002] In the prior art, the sealing gaskets are mostly made of flexible materials, such as asbestos, rubber, etc., due to the poor ability of such materials to bear stress, after a period of use, due to the pressure and ambient temperature, the sealing gaskets It is easy to age or relax, and the sealing performance becomes poor or even loses the sealing performance. At the same time, it is easy to bend and deform during installation, which affects the sealing effect. There are also sealing gaskets made of metal materials. Because the metal tube is hollow, the pressure resistance and compression rebound performance are limited, and the scope of application is narrow. On this basis, an improved metal sealing gasket is used. On the hollow metal tube There is an ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the sealing gaskets are mostly made of flexible materials, such as asbestos, rubber, etc., due to the poor ability of such materials to bear stress, after a period of use, due to the pressure and ambient temperature, the sealing gaskets It is easy to age or relax, and the sealing performance becomes poor or even loses the sealing performance. At the same time, it is easy to bend and deform during installation, which affects the sealing effect

There are also sealing gaskets made of metal materials. Because the metal tube is hollow, the pressure resistance and compression rebound performance are limited, and the scope of application is narrow. On this basis, an improved metal sealing gasket is used. On the hollow metal tube There is an opening, although it plays the role of self-tightening seal, it is prone to bursting and being blocked by the medium when used, and the ideal sealing effect cannot be achieved.

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