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Optimizacija procesa ultrazvočnega varjenja bakrenih priključkov
ID Kurinčič, Matija (Author), ID Kramar, Davorin (Mentor) More about this mentor... This link opens in a new window

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Abstract
Magistrsko delo je bilo narejeno z namenom izboljšanja procesa ultrazvočnega varjenja bakrenih priključkov. Med postopkom varjenja se zaradi vibracij na določenih delih varjenca pojavijo razpoke. Varjeni spoj se testira z vlečno silo, zato je spoj obremenjen na luščenje. Kupec zahteva minimalno vlečno silo 214 N za porušitev zvara in varjenec brez pojava razpok. Optimizacija procesa je bila izvedena s pomočjo uporabe načrtovanja eksperimentov. Slednji so bili osredotočeni na vpliv procesnih parametrov varilnika na mehansko trdnost zvara in pojav razpok. Predeksperiment je pokazal najvplivnejše parametre. Sprememba parametrov le delno izboljša proces varjenja, zato so bile med eksperimenti izvedene oblikovne izboljšave ležišča in varjenca, ki dodatno pripomorejo k optimizaciji in doseganju ciljev. Dodatna eksperimenta izbranih glavnih parametrov dobita optimalne procesne parametre.

Language:Slovenian
Keywords:metoda načrtovanja eksperimentov, ultrazvočno varjenje bakra, optimizacija procesa, mikrorazpoke, trgalni test
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Place of publishing:Ljubljana
Publisher:[M. Kurinčič]
Year:2021
Number of pages:XXV, 100 str.
PID:20.500.12556/RUL-129120 This link opens in a new window
UDC:621.791:669.3(043.2)
COBISS.SI-ID:78094083 This link opens in a new window
Publication date in RUL:27.08.2021
Views:905
Downloads:50
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Secondary language

Language:English
Title:Process optimization of ultrasonic welding of copper connectors
Abstract:
The master's work has been done to improve the process of ultrasonic welding copper connections. During the welding process, cracks appear on certain parts of the workpiece due to vibrations. Welded joints must be tested by the pulling force, the joint is loaded to peel. The customer demands a minimum peel force of 214 N to break the weld and workpiece without crack. Process optimization was done with using the design of experiment method. The experiments focused on the influence of the welding process parameters on the mechanical strength of the weld and the appearance of cracks. Changing the parameters only partially improves the welding process, so during the experiments, design improvements of the welding template, anvil and the workpiece were made, which further help to optimize and achieve the goals. With additional experiments of the selected main parameters obtain the optimal process parameters.

Keywords:design of experiments, ultrasonic welding of copper, process optimization, micro-cracks, peel test

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