Processing method of muffler cotton coating in automobile exhaust pipe muffler
A technology of automobile exhaust and processing and molding, which is applied in the direction of coating, exhaust device, noise reduction device, etc., can solve the problems of complex structure and limited noise reduction ability, and achieve the effect of easy-to-obtain raw materials, good noise reduction ability and simple structure
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Embodiment 1
[0024] Such as Figure 1 to Figure 2 As shown, the present invention provides an automobile exhaust pipe muffler, comprising: an air intake pipe 1 , a muffler chamber 10 communicating with the air intake pipe 1 , and an air outlet pipe 8 communicating with the muffler chamber 10 . Exhaust gas from the automobile enters the muffler chamber 10 through the intake pipe 1 and is discharged through the outlet pipe 8 .
[0025] Specifically, the muffler chamber 10 includes an elbow 2 communicating with the intake pipe 1, a first muffler 3 communicating with the elbow 2, a second muffler 4 arranged parallel to the first muffler 3, and a second muffler connected with the second muffler. 4 communicated with the intermediate pipe 6, and the S-shaped metal pipe 7 communicated with the intermediate pipe 6.
[0026] Wherein, the pipe walls of the first silencer pipe 3 and the second silencer pipe 4 are provided with silencer holes 30 for preliminary sound reduction. The wall of the S-shap...
Embodiment 2
[0029] Silencer cotton coating for automobile exhaust pipe mufflers, composed of 35% epoxy resin, 50% polyethylene resin, 5% graphite, 5% nano-zinc oxide, 2% levo-ephedrine and N-tert-butyl-2-benzothiazole Made from 3% sulfenamide.
Embodiment 3
[0031] The processing and forming method of the silencing cotton coating in the muffler of the automobile exhaust pipe, the steps are as follows:
[0032] 1) Mix the raw materials evenly and heat to 100°C to form a viscous liquid, and use a spray gun to spray the viscous liquid onto the tube wall of the S-shaped metal tube;
[0033] 2) Put the S-shaped metal tube into the heat treatment equipment for heat treatment, the treatment temperature is 120°C, and the treatment time is 5 hours;
[0034] 3) Naturally cool to room temperature, check the thickness of the sound-absorbing cotton coating, and control it between 0.2-0.8 cm.
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