6 research outputs found

    Optymalizacja parametr贸w lutowania i laserowego spawania jubilerskich stop贸w z艂ota

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    In this study, brazing and laser welding were experimentally compared for 9, 14 and 18 carat gold alloys in different color. The gold alloys were joined by laser welding and brazing and the microstructure, hardness, chemical composition, color of the weld joints were investigated. According to study, in laser welding, voltage, pulse duration, pulse diameter and frequency are the most important welding parameters that influence the quality of joints. Welded joints are characterized using three geometric parameters: penetration depth, width of heat affected zone and underfill defects. Finally, optimum laser welding parameters of different color of 9, 14 and 18 carat gold alloys were determined. It is observed that laser welding has numerous advantages compared to the other joining techniques used in the jewelry industry.W pracy, por贸wnano eksperymentalnie lutowanie i spawanie laserowe 9, 14 i 18 karatowych stop贸w z艂ota o r贸偶nym kolorze. Zbadano mikrostruktur臋, twardo艣膰, sk艂ad chemiczny i kolor po艂膮cze艅. Wyniki bada艅 spawania laserowego wskazuj膮, 偶e napi臋cie, czas trwania impulsu, 艣rednica impulsu i cz臋stotliwo艣膰 to najwa偶niejsze parametry, kt贸re wp艂ywaj膮 na jako艣膰 po艂膮cze艅. Spawane po艂膮czenia opisa膰 mo偶na przy u偶yciu trzech geometrycznych parametr贸w: g艂臋boko艣膰 penetracji, szeroko艣膰 strefy wp艂ywu ciep艂a i defekt贸w wype艂nienia. Ustalono optymalne parametry spawania laserowego 9, 14 i 18 karatowych stop贸w z艂ota o r贸偶nym kolorze. Stwierdzono, 偶e spawanie laserowe ma wiele zalet w por贸wnaniu do innych technik 艂膮czenia stosowanych w przemy艣le jubilerskim
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