Exhaust pipe insulation cover assembly and production method thereof

Abstract

The invention discloses an exhaust pipe insulation cover assembly and a production method of the exhaust pipe insulation cover assembly. The exhaust pipe insulation cover assembly comprises an exhaustpipe and a heat insulation cover. A plurality of second air inlets are formed in the side wall of the exhaust pipe. Air inlet branch pipes are fixed to the second air inlets. A plurality of connecting plates are arranged on the side wall of the exhaust pipe. The heat insulation cover comprises a first heat insulation felt layer, a second heat insulation felt layer, a heat insulation fiber layer located between the first insulation felt layer and the second insulation felt layer, a first hard shell layer located on the top surface of the first heat insulation felt layer, a second hard shell layer located on the bottom face of the second heat insulation felt layer, a first heat reflection layer located on the top face of the first hard shell layer and a second heat reflection layer locatedon the bottom face of the second hard shell layer. The production method of the exhaust pipe insulation cover assembly comprises the steps of a), casting, b), filling, c), hardening, d), aluminizing,e), molding, and f), mounting. The heat insulation cover is attractive in appearance and is good in fit with the exhaust pipe, the interior is fluffy, and the heat insulation performance is high.

Description

【Technical field】 [0001] The invention relates to the technical field of automobile exhaust pipeline systems, in particular to the technical field of an exhaust pipe shield assembly and a preparation method thereof. 【Background technique】 [0002] The automobile exhaust system is used to discharge the exhaust gas discharged by the engine, and at the same time reduce the noise and the pollution of the exhaust gas. When the exhaust pipe system of the automobile discharges the exhaust gas, a large amount of heat carried by the exhaust gas will heat the exhaust pipe, causing the surface temperature of the exhaust pipe to reach as high as 500-600 °C. Due to the limited space in the chassis of the car, the parts around the car exhaust pipeline system are mostly close to the car exhaust pipe, and the normal operation of the surrounding parts has strict requirements on the temperature. If the temperature is high, it is easy to cause safety hazards. accident, so the exhaust pipe nee...

AI Technical Summary

Problems solved by technology

The exhaust pipe cover assembly wrapped with soft refractory material has defects such as appearance wrinkles and poor thermal insulation performance

However, the existing heat shields are usually prepared by three-layer stamping and welding of ceramic fiber boards and metal plates. More metal materials are used, and the weight of the product is relatively large. Moreover, the problem of falling off between the metal plates and the ceramic fiber boards is easy to occur, resulting in the heat shield. fail

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