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Aluminum alloy automobile exhaust pipe and preparation method thereof

A technology for automobile exhaust and aluminum alloys, which can be used in exhaust devices, mechanical equipment, machines/engines, etc., and can solve problems such as poor bending resistance

Inactive Publication Date: 2020-10-16
王思记
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, aluminum alloy materials for automobile exhaust pipes still have the defect of poor bending resistance. Therefore, inventing an automobile exhaust pipe made of aluminum alloy with good bending resistance has positive significance for the technical field of aluminum alloy preparation.

Method used

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  • Aluminum alloy automobile exhaust pipe and preparation method thereof

Examples

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example 1

[0033]The rice husk and deionized water are mixed according to the mass ratio of 1:7, poured into an ultrasonic cleaner, and ultrasonically cleaned once with a power of 300W. After cleaning, put it into an oven and dry it at 105°C to obtain pretreated rice. Hull: Put the above pretreated rice husks into a carbonization furnace, heat up to 300°C for 10 minutes under the protection of carbon dioxide, then heat up to 1900°C, heat-preserve and carbonize for 9 hours, and discharge after carbonization to obtain rice husk-based carbonization Silicon fiber; after mixing the rice husk-based silicon carbide obtained above and a sodium silicate solution with a mass fraction of 30% in a mass ratio of 1:10, adjust the pH to 5 with hydrochloric acid, continue to stir for 1 hour and filter to obtain a filter residue, and Put the filter residue in a high-temperature reaction kettle, react at 150°C for 30 minutes, filter to obtain the reaction filter residue, and obtain the modified silicon car...

example 2

[0035] The rice husk and deionized water are mixed according to the mass ratio of 1:7, poured into an ultrasonic cleaner, and ultrasonically cleaned twice with a power of 350W. After cleaning, put it into an oven and dry it at 108°C to obtain pretreated rice Hull: Put the above pretreated rice husks into a carbonization furnace, heat up to 330°C for 15 minutes under the protection of carbon dioxide, then heat up to 1950°C, heat-preserve and carbonize for 9 hours, and discharge after carbonization to obtain rice husk-based carbonization Silicon fiber; after mixing the rice husk-based silicon carbide obtained above and a sodium silicate solution with a mass fraction of 30% in a mass ratio of 1:10, adjust the pH to 6 with hydrochloric acid, continue to stir for 2 hours, and filter to obtain a filter residue, and Put the filter residue into a high-temperature reaction kettle, react at 180°C for 35 minutes, filter to obtain the reaction filter residue, and obtain the modified silico...

example 3

[0037] The rice husk and deionized water were mixed according to the mass ratio of 1:7, poured into an ultrasonic cleaner, and ultrasonically cleaned for 3 times with a power of 400W. Hull: Put the above pretreated rice husks into a carbonization furnace, heat up to 350°C for 20 minutes under the protection of carbon dioxide, then heat up to 2000°C, heat-preserve and carbonize for 10 hours, and discharge the material after carbonization to obtain rice husk-based carbonization Silicon fiber; after mixing the rice husk-based silicon carbide obtained above and a sodium silicate solution with a mass fraction of 30% in a mass ratio of 1:10, adjust the pH to 6 with hydrochloric acid, continue to stir for 2 hours, and filter to obtain a filter residue, and Put the filter residue into a high-temperature reaction kettle, react at 200°C for 40 minutes, filter to obtain the reaction filter residue, and obtain the modified silicon carbide fiber; in parts by weight, heat the resistance furn...

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Abstract

The invention relates to an aluminum alloy automobile exhaust pipe and a preparation method thereof, and belongs to the technical field of metal pipe preparation. The preparation method comprises thefollowing steps of by taking rice husks as a raw material, pretreating and carbonizing the rice husks, preparing to obtain silicon carbide fibers, mixing the silicon carbide fibers with a sodium silicate solution, adding hydrochloric acid to react to generate orthosilicic acid precipitates attached to the surfaces of the silicon carbide fibers, and hydrolyzing the orthosilicic acid precipitates athigh temperature to generate silicon dioxide attached to the surface of the silicon carbide fiber, thereby finally preparing the modified silicon carbide fibers, and finally blending and pressing themodified silicon carbide fibers and aluminum alloy solution to obtain the aluminum alloy automobile exhaust pipe. The prepared aluminum alloy automobile exhaust pipe is high in bending strength and wide in application prospect.

Description

technical field [0001] The invention relates to an aluminum alloy automobile exhaust pipe and a preparation method thereof, belonging to the technical field of metal pipe preparation. Background technique [0002] At present, the exhaust pipe is installed between the engine exhaust manifold and the muffler for the purpose of reducing vibration and noise, facilitating installation and prolonging the life of the exhaust muffler system, so that the entire exhaust system is flexibly connected. Exhaust pipes are mainly used for light vehicles, mini-cars and passenger cars, motorcycles. The structure of the exhaust pipe is a double-layer corrugated pipe covered with a steel mesh sleeve, and the straight edge sections at both ends are covered with snap rings, in order to make the noise reduction effect better. , The bellows can be equipped with expansion joints or mesh sleeves. The main material of the exhaust pipe is stainless steel, and the ferrule and connecting pipe can be mad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/06C22C49/14C22C47/02C22C47/12C22C101/14F01N13/08F01N13/16
CPCC22C47/02C22C47/12C22C49/06C22C49/14F01N13/08F01N13/16
Inventor 王思记丁恒陈静莹江辉宏
Owner 王思记
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