JPS6034515A - Sliding component - Google Patents

Abstract

PURPOSE:To obtain a sliding component which is strong in strength, easy to mold, favorable in shape holding property and superior in resistance to wear, by making a wire net built in a tetrafluoroethylene resin layer. CONSTITUTION:An article obtained by either filling an appropriate filler or not filling the same is good for tetrafluoroethylene resin forming a tetrafluoroethylene resin layer 1. Then a wire net 2 is made to build in the tetrafluoroethylene resin layer 1. An arbitrary knitting method is good for the wire net 2, and brass or stainless steel is used for the quality of the meterial.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a part for sliding parts characterized in that a wire mesh made of any metal is built into a tetrafluoroethylene resin layer filled with or without a suitable filler. The purpose is to obtain a member for a sliding part that has high strength, is easy to mold, has good shape retention, and has excellent wear resistance.

The sliding part member of the present invention will be explained with reference to illustrative drawings.

In FIGS. 1 and 2, (1) is a layer of tetrafluoroethylene resin that is fired. The tetrafluoroethylene resin in this tetrafluoroethylene resin layer may be filled with an appropriate filler, or may not be filled with an appropriate filler. In the illustrated example, short carbon fibers are used as a filler in a weight ratio of 5% to the tetrafluoroethylene resin.

(2) is an arbitrary metal wire mesh. The wire mesh may be laid in the manner shown in the partially enlarged view of FIG. 3, or in any other manner. The material of the wire mesh shall be copper, brass, or stainless steel. The one shown in the drawing is made of brass.

Since the sliding part structure constructed in this way has a built-in wire mesh, it has high tensile and compressive strength.

Also, since it contains wire mesh, it is easy to mold it into the desired shape. For example, it can be easily made into the shape of a mechanical seal ring, rolled into a bearing, or attached to metal to make a slider.
Good shape retention.

Next, when this sliding part member slides, the wire mesh layer is partially exposed to the sliding part. Since the sliding portion of this wire mesh is only partial, it exhibits excellent sliding characteristics.

That is, abrasion powder of the tetrafluoroethylene resin enters this partial metal sliding portion to provide an excellent anti-friction effect. The sliding part is made of polytetrafluoroethylene resin and partially exposed metal, but the wire mesh layer supports most of the load, and the polytetrafluoroethylene resin provides friction reduction.

Since the exposed part of the wire mesh partially protrudes, a wedge action based on the viscosity of the fluid acts on this part during sliding, and fluid is introduced into this sliding part, increasing the strength of the fluid pressure in this part. Strong, significantly increases the load capacity of the sliding surface, and has a high pv value.
This makes it possible to provide a member for sliding parts with excellent wear resistance.

In implementing the sliding part member of the present invention, the wire mesh may be layered by stacking any number of plate-shaped, disk-shaped, etc. wire meshes, or may be wound into a cylindrical shape multiple times. good. Furthermore, the moon thus produced can be finished into any desired shape such as a plate, annular, disc, or cylinder.

Several examples of the method of manufacturing the sliding part member of the present invention will be described.

° That is, if you put a wire mesh into a mold, stack a plate of fired tetraethylene ethylene resin on top of it, heat it up to the firing temperature of tetraethylene ethylene resin while compressing it, and then slowly cool it. The ethylene resin softens and becomes integrated with the wire mesh. this is,
It may also be manufactured by alternately stacking wire mesh and tetrafluoroethylene resin plates. In this case, the wire mesh contacts and overlaps, and the layered wire mesh and tetrafluoroethylene resin are integrated.

The second method is a continuous manufacturing method, in which a wire mesh hoop material and a hoop material made of a fired tetraethylene resin plate are layered one on top of the other, and the material is slid onto a flat plate table, and then rolled on a roller. The product is manufactured continuously by heating it partially in a one-channel furnace to the firing temperature of the polytetrafluoroethylene resin, and then returning the part outside the furnace to room temperature and winding it up. can do.

The third method is to put a wire mesh into a mold and provide a powder layer of unfired tetrafluoroethylene resin on the second part, or to put unfired tetrafluoroethylene resin powder into this mold. The member of the present invention can be obtained by pre-compressing the resin, placing a wire mesh over the two, and firing the tetrafluoroethylene resin without compressing them.

The fourth method is a continuous manufacturing method, in which, as mentioned above, the wire mesh hoop material is moved onto a flat plate, unfired polytetrafluoroethylene resin powder is sprinkled on it, and the material is compressed with rollers while being heated in a tunnel furnace. The polytetrafluoroethylene resin is fired inside the chamber.

Several examples of manufacturing methods have been described above, and the sliding part member of the present invention can be used as a sealing ring of a mechanical seal or a bearing.

It can be used as a member for sliding parts such as brake knees or sliders, which has high strength, good moldability, excellent shape retention, high pv value, and good wear resistance.

[Brief explanation of drawings]

The drawings show an embodiment of the sliding part member of the present invention, with FIG. 1 being a plan view and FIG. 2 showing a y2-y2 projection of FIG. 1. The wire mesh in these figures is shown schematically. FIG. 3 shows an example of a wire mesh, and is a partially enlarged plan view of only the wire mesh in FIG. 1. (11...Tetrafluoroethylene resin layer. (2)...
・Wire mesh. Patent applicant: Arai Seisakusho Co., Ltd.! 'wYz Mathematics 2 Figure 1 Rough 3 Figure

Claims (1)

[Claims] A member for a sliding part, characterized in that an arbitrary metal wire mesh is built into a tetrafluoroethylene resin layer filled with or not filled with an appropriate filler.