Cladded aluminum brazing foil

Introduction of Cladded aluminum brazing foil
The Cladded aluminum brazing foil for automobile heat exchangers is made of Al-Mn alloy as the core material, double-sided cladding of Al-Si alloy brazing filler metal with 10% of the substrate thickness, and is rolled and compounded by hot rolling process. As it needs to withstand high temperature The heat exchanger fins have strict quality standards. Not only is the raw material required to have excellent surface quality, precise size and flat plate shape, but also the raw material is required to have a uniform structure and good formability, especially for the uniformity and weldability of the coating layer.
 
Development of Cladded aluminum brazing foil Technology
The production of aluminum alloy used in automobile heat exchangers began in the 1980s. At that time, due to the development of vacuum brazing technology, 50% of the automobiles produced in the United States were equipped with Cladded aluminum brazing foil heat exchangers. By the 1990s, the utilization rate of composite brazing aluminum foil for automobile heat exchangers in industrially developed countries had reached more than 90%. This is not only because the price of aluminum is lower than that of copper, but also the quality of car radiators made of composite brazing aluminum foil is significantly lower than that of similar products made of copper foil, which greatly promotes the development of lightweight automobiles. The use of Cladded aluminum brazing foil for automobile heat exchangers in my country began in the 1990s. In 1993, the consumption of composite brazing aluminum foil in my country was only 1,000 tons, and in 1994 it was 3,000 tons. In 1995, the demand reached 5,000 tons.
 
The use of Cladded aluminum brazing foil technology to produce automotive heat exchangers will greatly promote the lightweight process of the domestic automotive industry, and enable China's automotive industry to integrate with the world's development trends as soon as possible. It is one of the main directions for the development of my country's automotive industry in the early 21st century.