Brazing method of double-layer compound water tank

The invention aims to provide a brazing method of a double-layer compound water tank. The brazing method comprises the steps that: an aluminum brazing furnace is transformed, and is divided into fiveareas in sequence in a direction from an inlet to an outlet; a set of heaters is respectively disposed at the top and bottom in each area; each heater respectively controls different problem ranges; 99.99% of high-purity nitrogen is sprayed into the aluminum brazing furnace; a conveying belt 2 1 is started to move at an uniform speed; and a heat dissipation water tank with a double-layer compositestructure after assembly and coating of an aluminum brazing agent is fed in and inserted through the aluminum brazing furnace for aluminum brazing. The brazing method has the characteristics of convenient operation, firm welding and stable and reliable processing quality. 本发明旨在提供一种双层复合式水箱的钎焊方法，包括以下步骤：将铝钎加热炉进行改造，沿入口至出口方向依次划分为5个区域，每个区域内的底部和顶部分别设置一组加热器；每个加热器分别控制不同的问题范围，向铝钎加热炉内喷入99.99%高纯氮气；启动传送带1匀速运动，将拼装后并涂抹铝钎剂后的双层复合结构散热水箱送入并