An Analysis of The Drawing with Aluminum Brazed Sheets

Abstract

This paper analyzes drawing of aluminum sheets joined by brazing. Drawing is the transformation of a plan workpiece into the drawn part or workpiece, transformation with decreasing of depth corresponding transverse dimensions. The brazing process is based on the difference by the melting points of the base materials and filler metal. During the brazing process, the aluminum sheets to be assembled are heated to a temperature between the melting temperatures of the two alloys, this process tends to modify the geometry and the microstructure of the brazed sheets. In various industries such as automotive, aerospace, electronics, machine building industry etc., aluminum alloys can be used to replace the steel parts of carcasses (car body). Brazed sheets are widely used in the manufacture of heat exchangers by using an aluminum alloy. These sheets have different thicknesses and are generally made by hot rolling. Aluminum in natural form is very soft and ductile, slightly used due to its mechanical properties. The brazing process is based on the difference in the melting points of the base materials and filler metal. During the brazing process, the sheets to be assembled are heated at a temperature between the melting temperatures of the alloy, this process tends to modify the geometry and the microstructure of the brazed sheets.