Prepare for brazing aluminium samples by ultrasonic cleaning

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Dimitescu, A.^1 ; Babis, C.^1 ; Alecusan, A.M.^1 ; Chivu, O.^1

University Politechnica of Bucharest, Faculty Engineering and Management of Technological Systems, Splaiul Independentei no. 313, sect 6, Bucharest, Romania^1

关键词: Aluminium samples;    Aluminum and its alloys;    Anodized aluminum;    Low melting temperatures;    Protective layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/2/022021/pdf
DOI  :  10.1088/1757-899X/400/2/022021

来源: IOP

【 摘 要 】

Due to its properties, aluminum and its alloys are one of the most widespread materials in the industry, surpassing classical materials. From the economic point of view, with the introduction of these materials, it was also necessary to create technologies for the repair and refurbishment of the parts and subassemblies. Due to the relatively low melting temperature of the aluminum, the welding refurbishing operation faces some difficulties. Therefore, one of the most used aluminum refurbishing processes is the brazing operation. The difficulty of this operation is how to clean the surfaces to be contacted. Aluminum oxide on the surface is the protective layer on the anodized aluminum. The aluminum oxide on the surface is like the protective coating on anodized aluminum. The large differences between the melting point of the aluminum and the melting point of the aluminum oxide lead to defects in the brazing operation, unless proper preparation of the surfaces by the removal of the oxides is achieved. This paper aims to improve the preparation of the surfaces to be assembled by setting the parameters of the ultrasonic cleaning regime.