Isı kalkanları, bir aracın veya makinelerin çeşitli parçalarını, genellikle motorlar veya egzoz sistemleri tarafından üretilen aşırı ısıdan korumak için tasarlanmış önemli bileşenlerdir. Genellikle yüksek termal direnç ve dayanıklılık sunan metal veya diğer ısıya dayanıklı malzemelerden üretilmiştir. Birincil işlevleri, hassas bileşenlerden ısıyı yansıtmak ve dağıtmak, hasarı önlemek ve en uygun performansı sağlamaktır.
Gövde panelleri, tamponlar ve ızgrilles gibi bir aracın dış kısımları birden fazla amaca hizmet eder. Aracın estetiğine katkıda bulunurlar, harici elementlere karşı koruma sağlar ve aerodinamiği geliştirirler. Bu parçalar genellikle korozyon direnci ve hafif özellikler sunan metal, plastik veya compositler gibi dayanıklı malzemelerden yapılır. Genellikle aracın görsel çekiciliğini korumak ve sert çevre koşullarına dayanmak için yüksek kaliteli bir finişe sahiptir.
Material Type | Material properties |
Thin Aluminum Plate 1060-O | Provide good heat insulation. The additional knurling and Embossing process will increased surface area of the flat aluminum plate so as to improve heat diffuse reflection effect, and achieve a better insulation effect. Easy Molding. It's thin and soft, easy to be formed for a relatively complex structure. Light weight. Easy to achieve component and assembly weight limitation. However, the strength is poor and easy to deform. The sandwich structure combined from high temperature resistant fiber fillers commonly used for non-exterior parts requesting very high heat insulation performance. |
Thick aluminum plate 1060-O | Thick aluminum plate has good heat insulation, and strength better than thin aluminum plate, has light weight and easy to form shape. Anodized surface treatment will provide much better performance. The cost is relative high. Recommend to use for light vehicles exterior parts requesting very high heat insulation performance. |
Heat-resistant Aluminum Plate for deep drawing | The mechanical properties are close to stainless steel, but heat insulation performance is poorer than aluminum plate. The surface is aluminized for heat insulation and corrosion protection. Good strength, but poor molding ability. Complex structure is difficult to achieve, it has low cost but heavy weight, mostly used for parts that requesting low temperature insulation and high strength structure, and models that are not strict about body weight and component weight. |
Stainless steel | Has very good strength, but not easy to achieve complex forming, mostly used for bending structural parts. Has excellent corrosion resistance but relatively high price. Commonly used in normal heat insulation but very high strength structure. And used for fine exterior parts which need polishing, wire drawing and other surface treatments. |
(1) Provide high reflectivity and low emissivity, it could absorb and reemit infrared radiation;
(2) Provide high thermal conductivity to ensure heat energy could quickly conduct from the potential hot spot to the aluminum heat shield;
(3) Provide high specific heat capacity. This means that after it absorb a certain amount of heat energy, the temperature rise much lower than many other materials. In the vehicle body, 70% of the thermal management tasks can be handled by aluminum surface alone. The remaining 30% must be handled by the properly designed heat shield.
(4) Provide excellent corrosion resistance. Environmental factors such as humidity and high temperature accelerated the corrosion of the heat shield. In addition, most of the heat shield is directly exposed to road pollution. Pollutants such as brine, liquid asphalt, street dirt and mud. Aluminum will not lead unacceptable heat shield corrosion over the lifetime of vehicle.
(5) Provide adequate fracture resistance. Gravel and slight ground contact may cause local deformation of the lower heat insulation plate. The aluminum structure of the heat insulation cover is not prone to cracking.
(6) Different thicknesses of aluminum plates can be flexibly adapted to meet the various forming and service requirements for heat shields. The heat shield must be as close as possible to the hot source. Space is very limited, especially in the engine compartment and the chassis area, so the heat shield usually has a rather complex shape in order to closely fit the different parts and components.
Heat Shields Design | Heat Insulation Performance Summary |
Aluminized Steel Heat Shield | The mechanical properties are close to stainless steel plate. The surface is aluminized for heat insulation and corrosion protection. Provide very good structural strength and low cost, but the molding ability is general. It's heavy and mostly used for parts requesting low temperature insulation and high strength structure. |
Sandwich Heat Shields ( Aluminized Steel Plate + Heat Insulation Filler ) | Commonly used for exhaust manifold heat shields. But when the temperature exceeds 600 °C, ablation problem occurs in the aerobic environment, which will lead bad affect the heat insulation and the high temperature resistance becomes worse. |
Sandwich Heat Shields (Thin Aluminum Plate + Heat Insulation Fiber/Ceramic Fiberboard ) | Aluminum plate itself has good heat insulation performance, but when the temperature of heat insulation fiber board exceeds 600 °C, ablation problem occurs in the aerobic environment, which will lead bad affect the heat insulation and the high temperature resistance becomes worse. Ceramic fiber board can withstand temperatures up to 1000 °C. But the overall structural strength is poor and easy to deform. |
Embossed Aluminum Plate + Reinforced Mesh Washer/ Damping Washer (single layer, double layer) | Good heat insulation effect, light weight. When mesh washers or damping washers applied, the heat shields can be directly installed on the heat surface of 850 °C. Has a high molding ability and vibration resistance, good noise attenuation performance. This type of heat insulation structure is not easy to deform and crack. |
Heat Shields: These are designed to protect components from excessive heat, often produced by engines or exhaust systems. They are typically made from metal and have high thermal resistance, durability, and reflectivity to deflect heat away.
Exterior Parts: These components, such as body panels, bumpers, and grilles, are designed for aesthetics, protection, and aerodynamics. They are typically made from materials like metal, plastic, or composite materials for durability, corrosion resistance, and lightweight properties. They also often have a high-quality finish for visual appeal.
Suitable Application Environment and Assembly Site Recommendations:
Thin Aluminum Plate (1060-O): This material is suitable for environments where good heat insulation is required, such as engine compartments, exhaust systems, and other high-temperature areas. It can be used for non-exterior parts that require high heat insulation performance, such as insulation panels, heat shields, and interior components.
Thick Aluminum Plate (1060-O): This material is suitable for light vehicles' exterior parts that require very high heat insulation performance, such as hoods, fenders, and body panels. It can be used in manufacturing facilities equipped with advanced forming and shaping technologies to achieve complex shapes and designs.
Heat-resistant Aluminum Plate for Deep Drawing: This material is suitable for parts that require low-temperature insulation and high-strength structures, such as heat exchangers, heat sinks, and structural components in industrial machinery. It can be used in manufacturing facilities equipped with deep drawing capabilities to produce parts with complex shapes and high strength.
Stainless Steel: Stainless steel is suitable for applications that require high strength and corrosion resistance, such as structural components in automobiles, machinery, and equipment. It can be used in manufacturing facilities equipped with bending and surface treatment capabilities to produce structural parts and fine exterior components.
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