【作者】 段成银；

【导师】 黄光杰；

【作者基本信息】 重庆大学 ， 材料科学与工程， 2007， 硕士

【摘要】 铝合金复合钎焊板(箔)具有优良的抗腐蚀性能、导电、导热性能,被广泛应用于各种热交换器中,如汽车水箱散热器、汽车空调冷凝器、蒸发器等。热交换器用复合铝带箔是一类高附加值产品。中国自上世纪90年代中期以来一直是这类铝箔的净进口国,国产化率很低,而且产品质量较差,可见国产复合钎焊铝箔的当务之急是提高产量与品质,替代进口产品。本文主要以铝合金钎焊箔材4004/3003/4004为研究对象。针对其在轧制过程中的变形规律和钎焊性能做了细致的分析,并对轧制工艺进行了优化。文章首先分析了热轧复合过程中钎焊复合板(箔)的变形规律。利用正交方法设计了试验方案,对热、冷复合轧制过程中包覆率、结合强度的变化进行了研究;其次,以钎焊箔材的抗下垂性能为主要产品质量指标,重点讨论了成品轧制前退火制度、轧制加工率、取样位置对钎焊箔材的抗下垂性能的影响,并制定了最优的加工工艺,目前已在工业生产中得到应用,取得了很好的效果;最后,主要研究了冷轧复合钎焊板(箔)的轧制变形规律,并分析了板材预处理工艺、轧制加工率、扩散退火制度等因素与冷轧复合强度之间的关系,确定最终的工艺制度,并得到复合质量较好的冷轧复合钎焊板。更多还原

【Abstract】 The brazing sheet (foil) of aluminum alloy has perfect corrosion resistance property, it is used to various of heat exchanger with it’s heat-conductive, like as radiator, motorcar air conditioner, evaporator, and so on. Whit a high added value of the brazing sheet (foil) of aluminum alloy, it is the net import production in China from 90’s last century. The homebred ratio is very low, and with inferior quality, so the urgent affairs is upgrade the quantity and the quality of the brazing sheet (foil) of the aluminum alloy, and substitute the import produces.The main subject investigated in this thesis is 4004/3003/4004 brazing foil of aluminum alloy. Aim at the deformation formula during the rolling and detailed analyzing the property of braze, finally optimizing the process technology.Firstly, the compounding rolling rules of the aluminum alloy brazing foil during the hot rolling process is investigated. The cladding ratio and compound strength are studying during the hot and cold rolling process following the experiment plan which designed with the orthogonal method. Secondly, putting the hang-down resistance property of the aluminum alloy brazing foil as the primary produce quality target, analyzing the affection of the annealing process before finishing rolling, rolling ratio, the position of the specimen selection on the brazing foil, and setting down the best technical. At present, it is used in the factory producing. Thirdly, the deformation rules of the cold compounded rolling is studied, the relation between previous treatment of the billet, rolling ratio, diffused annealing and cold rolling compounded strength is analyzed, we can get the perfect cold rolling brazing foil by the best technical.更多还原