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ENSURING TECHNICAL CLEANLINESS OF STATOR PACKSRasheed Pattan, 2022, master's thesis
Abstract: Metal stamping is a cold-forming process that uses dies and stamping presses to convert sheet metal into desired geometries. The metal stamping process leaves residues on stamped components such as releasing agents, metal shavings, and other contaminants as they exit the press. These impurities hinder the functionality of the components. Therefore, they are required to be eliminated before the stamped sheets are assembled on the production line. Contaminant metal particles on the surfaces hinder the functionality of the components and eventually promote mechanical wear between the moving parts. It is consequently difficult to eradicate contaminants, as their adhesion is inevitable, the contaminants being at a range of a few micrometres to sub-micrometres. The myriad shape configuration of the present metallic and non-metallic contaminants posed a challenge to reaching the cleanliness standards desired by the quality of the product. We aim to develop an automated decontamination process to improve product quality, with an optimized production cycle, and cost-effectiveness. Fibres non-metallic particles are also necessarily rid from the surfaces of the component. In this study, the prime focus is on metallic contaminants, excluding the non-metallic fibrous contaminants that were present. Three viable techniques are opted for based on their feasibility on production line incorporation potential. Namely, Mechanical vibration, Pressurized air-blowing, and Ultrasonic cleaning. However, to achieve the greatest possible outcome, the three different techniques are weighed against each other.
Keywords: Components, Ultrasonic, Vibration, Air-blow, Metallic Particles, Contamination, Technical Cleanliness, Lamination.
Published in RUNG: 26.08.2022; Views: 1177; Downloads: 45
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