汽车热交换器用铝合金钎焊带包覆率范围的确定

来源期刊：中南大学学报(自然科学版)1999年第4期

论文作者：刘正春 甘卫平 彭志辉 韦家弘

文章页码：74 - 76

关键词：包覆率;抗下垂性;钎焊;铝合金

Key words：clad ratio; sag resistance; braze; aluminum alloy

摘    要：设计并制备了几种不同包覆率的3层复 合铝合金钎焊带材，检测了每种带材在正常钎焊条件下的抗下垂性能，从铝合金钎焊带抗下垂的能力和填充缝隙的能力2个方面对包覆率的选择进行了分析与讨论， 以厚度为0.16mm的A4343/A3003/A4343铝合金钎焊带为例，得出其最佳包覆率范围是10%～16%．该方法可推广到其它厚度和材质的铝 合金钎焊带中，确定它们的最佳包覆率范围．

Abstract: Seven samples of sandwich aluminum alloy brazing sheet with different clad ratios are designed and prepared. The sag resistance of each sample is inspected under the brazing condition. According to the requirements about both sag resistance and clearance filling ability, how to choose the suitable clad ratio is discussed. It is concluded that the optimum clad ratio of 0.16 mm A4343/A3003/A4343 brazing sheet is 10% to 16%. It is expected that the method here can be applied to brazing sheets of different thickness and composition.