Embossed aluminum plate in automobile application

　　The insulation materials used on cars generally have the effect of sound insulation. According to the characteristics of the use of the selection of heat insulation board parts of the material, can not be simply selected according to the heat transfer coefficient of the material. The commonly used materials for heat insulation panel parts in automotive engineering are generally industrial pure aluminum sheets. The main characteristics of industrial pure aluminum: light weight, density of 2.7 ×103 kg/m3, about 1/3 of steel; Good thermal conductivity, easy to heat dissipation, good shielding ability for thermal radiation, good plasticity (lower than the general car stamping steel plate), can be easily made of sheet and foil; Good resistance to atmospheric corrosion, can generate a dense alumina layer, and has good heat resistance.

　　Body insulation panels have the following typical structures:

　　(1) Generally single-layer aluminum plate: the thickness of the plate is generally 0.5 ~ 0.8mm, which is used for heat insulation positions with complex shapes, large sizes and low heat insulation requirements. Reduce cost, heat insulation color aluminum tile steel performance, easy processing.

　　(2) Single-layer convex plate: the thickness of the plate is generally 0.5 ~ 0.6mm, and the density of the convex plate generally has certain requirements. Due to the cold hardening of the surface after the processing of the convex plate, the strength of the parts made is good, and the dimensional stability is good. The convex plate increases the surface area of the heat insulation plate and improves the reflection ability of the heat insulation plate to heat and sound waves. At the same time, the flow state of air on the surface of the heat insulation plate is improved, so the heat insulation effect is better than that of a single flat aluminum plate.

　　(3) Double hollow convex aluminum plate: two layers of convex plate in the middle of the air sandwich. Plate thickness is generally 0.2 ~ 0.6mm, convex plate density has certain requirements. This structure in the case of a small increase in the weight of the parts, Suqian heat insulation color aluminum tile steel, can greatly improve the ability of sound insulation and heat insulation. But the processing technology requirements are higher.

　　(4) Multi-layer aluminum lamination: generally, a layer of aluminum plate is attached to several layers of aluminum foil convex cladding, using the heat insulation effect of the air layer between the aluminum foil convex cladding plates and the strong ability of aluminum layer to reflect heat rays to achieve the effect of heat insulation. The insulation is good. Some models also distribute small holes on the aluminum plate to achieve the effect of noise reduction.

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