What types of metals are used to make exhaust systems?
Chances are good that your exhaust system is made from 400-series steel. Cast iron is used for the exhaust manifold (stock). Aluminized steel is often used in aftermarket exhaust systems. In addition, a wide range of other metals can be added to the mix as alloys to provide greater strength or耐腐蚀性能取决于所讨论的排气类型。
为了使车辆具有竞争力,特定应用和符合法规的价格,现代汽车排气系统的设计,开发和制造是规定的。由于保修要求和法规合规的增加,排气系统的材料选择起着至关重要的作用。
Exhaust system materials should possess high temperature oxidation resistance, thermo mechanical vibration resistance, external salt corrosion resistance and internal acid/base corrosion resistances.
排气系统中主要使用的材料是铸铁,不锈钢,低碳钢 /碳钢。重量轻概念,降低成本和更好的性能的最新趋势已导致使用钣金。如今,不锈钢用于灵活的波纹管,催化转化器,谐振器,消音器,管道。碳钢 /碳钢用于法兰,管道和消音器。
不锈钢开始是汽车装饰装饰的材料。但是,近年来,它主要用作排气系统的材料。排气系统的组件已经从传统的铸造金属和铝制碳钢板变为不锈钢,从通用的不锈钢到特种不锈钢,具有更高的性能。这是由于不锈钢良好的性能和高温,高腐蚀性和外观的特征,同时满足了对清洁排气气的现代需求,并减轻了重量,从而获得更好的燃油经济性。
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