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Composite-fiber automobile exhaust pipe and production process thereof

A composite fiber, automobile exhaust technology, applied in other household appliances, household components, household appliances and other directions, can solve the problems of ferritic stainless steel exhaust pipe corrosion and other problems, and achieve the effect of cost saving and cost reduction

Inactive Publication Date: 2017-05-31
WUXI MINGSHENG STRONG BLOWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the previous application of the applicant, the carbon fiber exhaust pipe was obtained by wet winding of carbon fiber, which solved the problem of corrosion of the ferritic stainless steel exhaust pipe, and at the same time reduced its weight and achieved light weight

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A production method for an automobile composite fiber exhaust pipe, comprising: adopting an electric heating mandrel, carbon fiber bundles dipped in glue, and then directly winding onto the electric heating mandrel under tension control; Heating at a constant temperature until the thickness of the wound carbon fiber layer reaches 1 / 6 of the preset winding thickness; then, after the glass fiber bundle is dipped in glue, it is directly wound onto the carbon fiber layer under tension control, and at the same time the winding thickness is 5°C / 0.1mm The heating rate is to gradually increase the temperature of the mandrel; after reaching 5 / 6 of the preset winding thickness, the carbon fiber cluster is dipped in glue, and is directly wound on the glass fiber layer under tension control until the preset winding thickness is reached, and the winding stops; then the core The mold is heated at a constant temperature of 140°C until the curing of the carbon / glass composite fiber exha...

Embodiment 2

[0031] A production method for an automobile composite fiber exhaust pipe, comprising: using an electric heating mandrel, carbon fiber bundles are dipped in glue, and then directly wound onto the electric heating mandrel under tension control; Heating at a constant temperature until the thickness of the wrapped carbon fiber layer reaches 1 / 5 of the preset winding thickness; then, after the glass fiber bundle is dipped in glue, it is directly wound onto the carbon fiber layer under tension control, and at the same time the winding thickness is 10°C / 0.1mm Gradient heating of the mandrel at a certain heating rate; after reaching 4 / 5 of the preset winding thickness, the carbon fiber cluster is dipped in glue, and is directly wound on the glass fiber layer under tension control until the preset winding thickness is reached, and the winding stops; then The mandrel is heated at a constant temperature between 160°C until the curing and molding of the carbon / glass composite fiber exhaus...

Embodiment 3

[0033] A method for producing an automobile composite fiber exhaust pipe, comprising: adopting an electric heating mandrel, carbon fiber bundles dipped in glue, and then directly winding onto the electric heating mandrel under tension control; Heating at a constant temperature until the thickness of the wrapped carbon fiber layer reaches 1 / 6 of the preset winding thickness; then, after the glass fiber bundle is dipped in glue, it is directly wound on the carbon fiber layer under tension control, and at the same time the winding thickness is 7°C / 0.1mm Gradient heating of the core mold at a heating rate of 100%; after reaching 5 / 6 of the preset winding thickness, the carbon fiber bundles are dipped in glue, and are directly wound onto the glass fiber layer under tension control until the preset winding thickness is reached, and the winding stops; then The mandrel is heated at a constant temperature between 150°C until the curing and molding of the carbon / glass composite fiber exh...

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PUM

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Abstract

The invention discloses a composite-fiber exhaust pipe and a production process thereof. The production method of the automobile composite-fiber exhaust pipe comprises the steps that an electric heating mandrel is adopted, and a carbon fiber bundle is directly wound on the electric heating mandrel under tension control after being dipped in glue; the mandrel is subjected to constant temperature heating at the temperature of 100-120 DEG C in the early winding stage till the winding thickness of a carbon fiber layer reaches 1 / 6-1 / 5 of the preset winding thickness; then, a glass fiber bundle is directly wound on the carbon fiber layer under tension control after being dipped in glue, and meanwhile, the mandrel is subjected to gradient temperature rise with the temperature rise rate being 5-10 DEG C per 0.1mm of the winding thickness; after the winding thickness reaches 4 / 5-5 / 6 of the preset winding thickness, a carbon fiber bundle is dipped in glue and then directly wound on a glass fiber layer under tension control, and winding is stopped till the winding thickness reaches the preset winding thickness; and the mandrel is subjected to constant temperature heating at the temperature of 140-160 DEG C till curing molding of the carbon / glass composite-fiber exhaust pipe is completed. Through the production process, all advantages of the composite-fiber automobile exhaust pipe can be kept, and meanwhile, the cost can be substantially reduced.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to an auto exhaust pipe and a production process thereof. Background technique [0002] Automobile exhaust pipe is one of the most important accessories in automobiles, especially internal combustion engine automobiles. In terms of its effect on the car body, it plays the role of shock absorption and noise reduction, and prolongs the life of the exhaust muffler system. For ordinary cars, because the exhaust gas of the car is under great pressure when it leaves the engine, the noise it produces may make people feel crazy. At this time, the main role of noise reduction is the exhaust pipe of the car. The device greatly reduces the noise of the car. And its main working principle is to divert the airflow through multiple channels. These diversions only see friction and collision with each other to make the flow velocity of the airflow gradually decrease. This repeated cycle finall...

Claims

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Application Information

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IPC IPC(8): B29C53/60B29C53/82B29C53/84B29L31/30
CPCB29C53/60B29C53/821B29C53/845B29L2031/3055
Inventor 张达明
Owner WUXI MINGSHENG STRONG BLOWER