论文部分内容阅读
汽车热交换器的制造者们一直在探索新的钎焊板材料，以便能减少部件的尺寸和设计出新的产品。本文对５种成分的试验钎焊板芯材进行了考察，它们是在３００３合金基础上添加铜和４种含铁量不相同的改型合金。加入铜和钛后，钎焊板试样在试验室的加速腐蚀试验中，耐腐蚀性能大大改善。可以看到，芯材成分中含有铁的钎焊板，其腐蚀过程是横向扩展的，平行于板材表面。这种腐蚀方式延长了腐蚀穿孔所需要的时间。试验室的钎焊试验已经证明，用所试验的每种成分的芯材制成的钎焊板，真可钎焊性与现行生产的钎焊板的相似。在现行的３００３钎焊板芯材合金中添加铜和钛，使汽车用的真空钎焊铝合金热交换器组件的外部耐腐蚀性能得到了明显改善。
Manufacturers of automotive heat exchangers have been exploring new brazing material to reduce component size and design new products. In this paper, five kinds of experimental brazing plate core materials were investigated, they are based on the addition of 3003 copper and four different amounts of iron modified alloy. After adding copper and titanium, brazing plate samples accelerated corrosion test in the laboratory, corrosion resistance greatly improved. Can see that the composition of the core material containing iron brazing sheet, the corrosion process is horizontal expansion, parallel to the plate surface. This corrosion method extends the time required to etch through holes. Brazing tests in the laboratory have demonstrated that the brazing sheets made from the core material of each component tested have true brazability similar to the currently produced brazing sheets. Addition of copper and titanium to the existing 3003 brazing sheet core alloy significantly improves the external corrosion resistance of the automotive brazed aluminum alloy heat exchanger assembly.