Processing technology for automobile noise-reducing exhaust pipe with high corrosion resistance

Abstract

The invention discloses a processing technology for an automobile noise-reducing exhaust pipe with high corrosion resistance. The processing technology comprises the following steps: processing a noise-reducing barrel of the exhaust pipe, a noise-reducing barrel cover plate, a noise-reducing separator plate, an automobile exhaust outlet pipe and an automobile exhaust inlet pipe; carrying out alloy co-permeation on the noise-reducing barrel of the exhaust pipe and the noise-reducing barrel cover plate; subjecting the inner side surfaces of the treated noise-reducing barrel and noise-reducing barrel cover plate to Dacromet anticorrosion treatment and subjecting the surfaces of the noise-reducing separator plate, the automobile exhaust outlet pipe and the automobile exhaust inlet pipe to Dacromet anticorrosion treatment; treating the surfaces of the treated noise-reducing separator plate, automobile exhaust outlet pipe and automobile exhaust inlet pipe with a blocking solution; and assembling the treated noise-reducing barrel, noise-reducing barrel cover plate, noise-reducing separator plate, automobile exhaust outlet pipe and automobile exhaust inlet pipe to form the automobile noise-reducing exhaust pipe. The processing technology provided by the invention makes full use of anticorrosion treatment technology in the prior art and can greatly improve the corrosion resistance and service life of the automobile noise-reducing exhaust pipe.

Description

technical field [0001] The invention relates to the technical field of processing an automobile muffler exhaust pipe, in particular to a processing technology for an automobile silencer exhaust pipe with high corrosion resistance. Background technique [0002] The simplest, most effective and most important way to reduce exhaust noise is to use an exhaust muffler. In order to eliminate exhaust noise as much as possible, a high-performance muffler must be designed; the muffler exhaust pipe of a heavy-duty vehicle mainly includes the exhaust pipe muffler, It is used to close the silencer cover plate of the exhaust pipe silencer, a number of noise reduction partitions arranged in the exhaust pipe silencer, the automobile exhaust exhaust pipe and the automobile exhaust intake pipe, and several noise reduction partitions separate the exhaust pipe silencer into There are several chambers, some of which are filled with sound-absorbing materials to reduce the noise generated when th...

AI Technical Summary

Problems solved by technology

Dacromet, also known as Dacromet rust, high-gram rust, zinc-chromium film, etc., refers to coating the metal substrate with a liquid treatment solution containing zinc flakes, aluminum flakes, chromic anhydride, ethylene glycol, etc. After baking, a layer of non-decorative coating film with excellent corrosion resistance is formed on the surface of the metal substrate. The disadvantage is that the surface hardness is insufficient