Studies On Surface Cleaning Method For Best Strenght Of Spot Welding

Junaidi, Noor Juliza (2016) Studies On Surface Cleaning Method For Best Strenght Of Spot Welding. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text Studies On Surface Cleaning Method For Best Strenght Of Spot Welding 24 Pages.pdf - Submitted Version Download (687kB)

Abstract

Resistance spot welding is usually used in the automotive industry, because it has the benefit which is high-production assembly lines, high speed, and suitability for automation. The surface integrity of the material surface has direct impact to the joining strength in spot welding. To have best strength of spot welding, the cleaning methods affect the strength. The objective of this project is to study on the surface cleaning method for best strength of spot welding. In the cleaning method, there are 3 type of cleaning which are chemical cleaning by turpentine, chemical cleaning by soap and mechanical cleaning by sandpaper. 3 test are used in this project which is using drop test to analyze the contact angle to investigate the surface energy of cleaning surface, tensile test to analyze the strength of spot welding joining which maximum load that can be applied before the specimen is rupture or tears apart and visual test using calliper to measure the nugget diameter (mm) of the specimen. By doing the analysis, the suitable cleaning method can be determined. The material used in this study is Aluminium. Finally, the comparison result shown the cleaning by using turpentine is the best for the aluminium surface.

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