JPS5993569A - Method for forming heat resistant gasket - Google Patents

Abstract

PURPOSE:To provide a heat resistant gasket with improved durability and abraision resistance, by laying a graphite sheet on a finely corrugated, flatten wire mesh and by turning the same around a core bar with the outermost circumferential layer made of only the wire mesh. CONSTITUTION:A wire mesh made from heat resistant fine metal wires netted in stockinet is flattened and corrugated, and on thus prepared wire mesh 1 is laid a graphite sheet 2, wherein the wire mesh 1 at one end is made longer than the graphite sheet 2 at the same end. The above wire mesh and the graphite sheet put together are turned around a core bar with the wire mesh facing outside, and a roll is thus obtained wherein the outermost circumferential layer will be of only the wire mesh 1. Then, the roll is pressed into a predetermined shape. Since a large number of projections 1a of the corrugated wire mesh are exposed on the surface partly, the gasket has good lubricity and abraision resistance.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a method of forming a J'N moving 1-type hot gas cutter.

The conventional heat-resistant gasket, as disclosed in Japanese Patent Publication No. 1975-1-76759, is made by combining a Gnonoa-1 sheet and a flat 3F-shaped wire mesh 41i, and making the graphite sheet longer than both yHH and H of the wire mesh. The graphite sheet was placed on the outside and wound around the core metal, and then pressed into a predetermined shape, but since the sliding surface was covered only with graphite, the graphite sliding surface would wear out if used in a manner that caused heavy sliding. The graphite on the sliding surface adheres to the spherical surface of the contact member, causing sliding noise when the graphite rubs against each other, and this sliding noise occurs when the engine is idling. The drawback was that the sound was audible and the interior of the vehicle could not be kept quiet.

In the present invention, a wire mesh is finely corrugated, a graphite sheet is polymerized on the top surface of the wire mesh, the corrugated wire mesh is wound around a core metal with the outside, and pressure molded into a predetermined shape. This method eliminates the drawbacks of the conventional method by removing V so that a large number of Er can be obtained.

Next, the present invention will be explained with reference to the accompanying drawings. 1 is 0 for example
．． A wire mesh made by knitting, flattening, and corrugating a surface 1 heat-resistant metal thin wire such as a 15 to 0.35φ stainless steel wholesale wire.A graphite sheet 2 is superimposed on the top surface of the wire mesh, and one end of the wire mesh l is connected to one end of the graphite sheet 2. The lengthened wire mesh 1 is wound around the core bar 3 with the wire mesh 1 outside, and after leaving only the wire mesh 1 on the outermost periphery, the wire mesh 1 is pressed into a predetermined shape and the surface is corrugated (= the convex part 1a of the wire mesh with J force of 1 yen).
Heat forms the sket 4 on the partially exposed surface j.

According to the present invention, the surface of the heat-resistant gasket has a convex part of the wire mesh machined with a wave shape, which functions as a pole joint because a large number of convex parts are exposed. Since the interior is filled with graphite, it maintains sealing performance for a long time even when exposed to high-temperature exhaust gas. Also, graphite does not adhere to the mating contact part, making it easy to wear. No moving noise occurs.

[Brief explanation of the drawing]

Fig. 1 is a congratulatory drawing of the wire mesh used in the present invention, Fig. 2 is a perspective view of the wire mesh of Fig. 1 processed into corrugations, and Fig. 3
The figure is a perspective view of a graphite sheet superimposed on the top surface of the wire mesh in Figure 2, and Figure 4 is a view of the surface during molding.
The figure is a perspective view of a molded article molded by the method of the present invention. 1. Flat wire mesh 7 units, la... Wire mesh convex portion, 2. Graph eye) sheet, 3... Core bar, 4. Surface] Heat nozzle. Patent applicant: Chuo Spring Co., Ltd.

Claims (1)

[Claims] A flat wire mesh is finely corrugated, a graphite sheet is polymerized on its top surface, and the wire mesh is wound on the core metal with the wire mesh outside, leaving only 7 pieces of wire mesh on the outermost periphery. After that, it is pressed into a predetermined shape and the surface is corrugated. Heat resistance-1 where many convex parts of the wire mesh are partially exposed! How to form slits.