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在国民经济的各部门中,热交换器获得了日益广泛的应用,为了提高其热效率,对翅片铝材性能的要求也越来越高,既要求它们有良好的成形性能,又必须具有高的表面处理性能。一般要对翅片铝材进行亲水性的表面处理,而在进行成形加工时往往采用低粘度挥发性油作润滑剂,可是其润滑性能低。因此,要求材料有高的成形性能。为适应这种要求,日本神户钢铁公司轻合金伸铜事业部与研究部新近研制成两种预涂层的翅片铝材,其牌号为KS109及KS209。这两种材料的表面涂层的构成及其主要特性如下表所列。预处理表面涂层由抗蚀性层和亲
In all sectors of the national economy, heat exchangers are gaining more and more widespread use. In order to increase their thermal efficiency, the requirements for the properties of finned aluminum are also getting higher and higher, requiring both good formability and high Surface treatment performance. Fin surface aluminum generally hydrophilic, and in the process of forming often use low viscosity volatile oil as a lubricant, but its low lubricating properties. Therefore, materials are required to have high formability. In order to meet this requirement, Japan Kobe Steel Light Alloy Copper Division and Research Department recently developed into two pre-coated fin aluminum, its grade KS109 and KS209. The composition of the surface coatings of these two materials and their main characteristics are listed in the following table. Pretreatment of the surface coating by the anti-corrosion layer and pro