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Found 3 essays matching the above criteria.
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1. Improvement and verification of a pin-on-disc tribometer with variable speed and load
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : The use of threaded fasteners can be found throughout the manufacturing industry due to their simplicity. When tightening a threaded fastener, the goal is to reach a desired clamping force. However, the clamping force is not directly measurable in production environments and the tightening torque is instead used to estimate the clamping force. READ MORE
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2. Material characterization of multi-layered Zn-alloy coatings on fasteners : Effects on corrosion resistance, electrical conductivity and friction
University essay from KTH/MaterialvetenskapAbstract : Electroplated zinc-alloy coatings have been used on fasteners in the automotive industry for many years. The coating often consists of three layers: a zinc-alloy layer, a passivation layer and a sealer or top-coat. READ MORE
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3. Release rates and environmental impact of zinc-nickel coatings in the automotive industry
University essay from KTH/MaterialvetenskapAbstract : At present the automotive industry is due to an EU directive, replacing hexavalent chrome on vehicles. This is an extensive job as hexavalent chrome is used all over the vehicle and to large extent on fasteners (screws, nuts, rivets etc.). Chrome (VI) is used as a passivating layer on mainly zinc-iron. READ MORE