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Oblikovno navarjanje aluminijeve zlitine AlSi5
Grubar, Aleksander (Author), Klobčar, Damjan (Mentor) More about this mentor... This link opens in a new window

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Abstract
Aluminijeve zlitine se veliko uporabljajo pri izdelavi raznih izdelkov, pri katerih je pomembno visoko razmerje med trdnostjo in maso. Pri izdelavi kompleksnih izdelkov pogosto naletimo na tehnološke omejitve izdelave, ali pa želimo zmanjšati stroške in količino odpadnega materiala. Zato se v zadnjem času čedalje bolj uveljavljajo aditivne tehnologije, s katerimi rešujemo te izzive. Naloga se osredotoča na izdelavo baze podatkov pri obločnem navarjanju aluminijeve zlitine AlSi5 in optimiziranje postopka. Testi so opravljeni z varilnim robotom in sinergijskim varilnim virom za varjenje MIG/MAG, uporabljen pa je postopek CMT. Predvsem so podrobno preučeni osnovni varilni parametri, ki omogočajo izdelavo kakovostnih navarjenih sten, analizirano pa je tudi odvajanje toplote in razporeditev le-te po varjencu. Izsledki naloge kažejo, da je ob dobrem obvladovanju vnosa toplotne energije mogoče izdelati vizualno kakovostne stene s širino do 4,5 mm in izkoristki materiala nad 80 % , ki jih je po dodatni mehanski obdelavi možno uporabiti za izdelavo tankostenskih izdelkov.

Language:Slovenian
Keywords:aluminijeve zlitine, varjenje, aluminij, AlSi5, postopki spajanja materialov, aditivne tehnologije, navarjanje, WAAM, 3D tiskanje
Work type:Bachelor thesis/paper (mb11)
Organization:FS - Faculty of Mechanical Engineering
Year:2018
Views:541
Downloads:248
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Secondary language

Language:English
Title:Wire and Arc Additive Manufacturing of AlSi5 Aluminum Alloy
Abstract:
Aluminum alloys are used in the manufacturing of many products that require a high strength to weight ratio. In manufacturing of complex products we often reach the technological limits of conventional manufacturing methods or want to reduce costs and the amount of discarded material. To solve these problems, many types of additive technologies are being developed. This paper focuses on creating a database of parameters and optimization of the wire and arc additive manufacturing method for welding of AlSi5 aluminum alloy. The tests are made using a welding robot in combination with a synergic MIG/MAG welding machine and where CMT welding process is used. The emphasis is on the study of core welding parameters that enable quality welded walls to be made. Heat conduction and its distribution across the welded part is also studied. The results of this paper show that through good heat input management, it is possible to produce quality welded walls with widths up to 4,5 mm and material deposition efficiency above 80 % that, after additional machining, can be used for production of thin-walled products.

Keywords:aluminum alloys, welding, aluminum, AlSi5, material joining processes, additive technologies, WAAM, 3D printing

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