Method of preparing compound sealing component used for internal combustion engine

Abstract

The invention provides a production method of a composite sealing element used for an internal combustion engine. A frame is firstly produced by metal and / or engineering plastic through the molding technology and then is arranged in a mould and a rubber sealing line is synthesized on the frame by using the molding technology, in this way, the composite sealing element with the frame being made of metal and / or engineering plastics and the composite rubber being taken as the sealing line is produced. The sealing element produced by the production method of the composite sealing element used for the internal combustion engine has good stability and endurance and has the advantages of former metal rubber composite sealing element. In addition, because of adopting the molding technology and producing the frame before compositing the sealing line, the utilization ratio of raw materials is 100 percent in theory; the resource consumption is reduced; the problems that the costs of former sealing element without asbestos and stamping and producing the metal rubber composite sealing element after a whole plate making is too high in costs, etc. are solved; and the problems of resource consumption and environmental pollution caused by using solvent in the process of producing the two sealing elements are eliminated.

Description

technical field [0001] The invention relates to a method for manufacturing a composite seal for an internal combustion engine. Background technique [0002] The seals used in internal combustion engines have experienced multiple development stages such as asbestos, asbestos-free, cork rubber, and rubber. Traditional asbestos sealing plates and seals have large deformations, have defects such as oil and water leakage and environmental pollution to varying degrees, and are harmful to human health, so they have been restricted in use. The material used for non-asbestos seals is a board made of aramid fiber mixed fiber as a reinforcing material instead of asbestos fiber, and synthetic rubber such as acrylonitrile with high oil resistance as a binder. The product has high tensile strength, oil resistance, and high temperature resistance. Etc. But this product is to produce the whole plate first, and then carry out punching and forming according to the shape requirements of the ...

AI Technical Summary

Problems solved by technology

However, the manufacture of this kind of metal-rubber composite seal is usually the same as the manufacture of non-asbestos seals, using the process of spraying rubber resin composite material on the entire skeleton material and then stamping, and there is a large amount of grease and benzene released during spraying. Solvents have a certain impact on safe production and the environment; there are also many leftovers during stamping and forming, and there is a lot of material waste; large deformation during stamping and forming, and the size is difficult to guarantee and other defects

In addition, the production process is relatively complicated, and there are cutting and rolling in the stamping process, which makes the mold technical requirements and process control of the gasket processing more complicated