A kind of heat shield and its processing method

Abstract

The invention discloses a heat shield and relates to the technical field of heat shields. The heat insulation cover includes a cover body and heat insulation cotton, the cover body is connected with the heat insulation cotton, the cover body includes an air intake section, a middle section and an exhaust section, and the air intake section is connected with the heat insulation cotton , the thickness of the cover body is 0.1-0.2mm, and the thickness of the heat insulation cotton is 5-7mm. The present invention uses SUS430 stainless steel with a thickness of 0.1-0.2mm as the cover body and glass fiber cotton with a thickness of 5-7mm as the heat insulation cotton, which can not only achieve heat insulation, promote the complete gas reaction, but also meet the requirements of light weight, and meet the national requirements. Six standards. The invention utilizes inorganic adhesives to ensure the assembly between the cover body and the heat insulation cotton, and can be firmly combined in a high temperature environment. The preparation method of the heat shield of the invention is simple and convenient for industrial application.

Description

technical field [0001] The invention relates to the technical field of heat shields, in particular to a heat shield and a processing method thereof. Background technique [0002] The exhaust system of a car is one of the important components of a car. It is mainly composed of an exhaust pipe, a purifier, a catalytic converter, and a muffler. The exhaust pipe and catalytic converter of a car require heat insulation. The existing technology uses The 0.5mm thick galvanized sheet is double-sidedly pressed or unilaterally fastened on one side of the opponent for simple heat insulation, but the existing technology has the following disadvantages: ① Due to the high temperature of the hot end of the engine and the dense surrounding pipelines, the The heat insulation scheme of the traditional technology, in the long-term use of the vehicle, due to the incomplete heat insulation, is easy to cause damage to the surrounding lines, accelerate the aging of the lines, and cause failures; ...

AI Technical Summary

Problems solved by technology

[0002] The exhaust system of a car is one of the important components of a car. It is mainly composed of an exhaust pipe, a purifier, a catalytic converter, and a muffler. The exhaust pipe and catalytic converter of a car require heat insulation. The existing technology uses The 0.5mm thick galvanized sheet is double-sidedly pressed or unilaterally fastened on one side of the opponent for simple heat insulation, but the existing technology has the following disadvantages: ① Due to the high temperature of the hot end of the engine and the dense surrounding pipelines, the The heat insulation scheme of the traditional technology, in the long-term use of the vehicle, due to the incomplete heat insulation, is easy to cause damage to the surrounding lines, accelerate the aging of the lines, and cause failures; The temperature loss in the tube is fast, and the gas reaction is not complete, so that it cannot meet the national emission standards; ③The major OEMs are promoting the "lightweight" of automobiles to achieve weight reduction and consumption reduction. Traditional heat insulation solutions use thicker materials , increase the vehicle weight

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