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| Description
| - This article focuses on repeated repair GMAW welding of precipitation hardenable Al alloy EN AW 6082-T6. During GMAW welding it may occur that weld needs repair because of presence of unacceptable weld defects, such as cracks and porosity. These defects need to be removed and welded again to be repaired. Such repair welding procedure is believed to have detrimental influence on weld joint quality because of multiple heat cycle, especially if the repair welding is done repeatedly (twice, three times). To objectively estimate influence of repeated repair GMAW welding on weld quality, V joint butt welds of 10 mm thick sheet were done. After welding the samples were mechanically tested, weld has been removed by grinding and welded again. This process was repeated up to 4 times. After each repair weld, the weld quality was assessed by visual and penetration non destructive tests and by tests of mechanical properties. Tensile strength and bend test, microhardness were measured. Microstrucure changes by repeated welding (heat input) were observed by means of metallography. Theoretically expected premises that repeated heat input would lower every time mechanical properties have been proven. But the mechanical properties of repaired welds were better than expected. The sharpest decline of mechanical properties was caused by 1st repair cycle. Results of the research can be applied for assessing repairability of GMAW welds and creation of welding procedure specification (WPS) for weld repairs. Results of the research were used to create WPS for repair of butt weld of EN AW 6082-T6.
- This article focuses on repeated repair GMAW welding of precipitation hardenable Al alloy EN AW 6082-T6. During GMAW welding it may occur that weld needs repair because of presence of unacceptable weld defects, such as cracks and porosity. These defects need to be removed and welded again to be repaired. Such repair welding procedure is believed to have detrimental influence on weld joint quality because of multiple heat cycle, especially if the repair welding is done repeatedly (twice, three times). To objectively estimate influence of repeated repair GMAW welding on weld quality, V joint butt welds of 10 mm thick sheet were done. After welding the samples were mechanically tested, weld has been removed by grinding and welded again. This process was repeated up to 4 times. After each repair weld, the weld quality was assessed by visual and penetration non destructive tests and by tests of mechanical properties. Tensile strength and bend test, microhardness were measured. Microstrucure changes by repeated welding (heat input) were observed by means of metallography. Theoretically expected premises that repeated heat input would lower every time mechanical properties have been proven. But the mechanical properties of repaired welds were better than expected. The sharpest decline of mechanical properties was caused by 1st repair cycle. Results of the research can be applied for assessing repairability of GMAW welds and creation of welding procedure specification (WPS) for weld repairs. Results of the research were used to create WPS for repair of butt weld of EN AW 6082-T6. (en)
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| Title
| - Influence of Repair Welding on Weld Quality of Al Alloy EN AW 6082-T6
- Influence of Repair Welding on Weld Quality of Al Alloy EN AW 6082-T6 (en)
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| skos:prefLabel
| - Influence of Repair Welding on Weld Quality of Al Alloy EN AW 6082-T6
- Influence of Repair Welding on Weld Quality of Al Alloy EN AW 6082-T6 (en)
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| skos:notation
| - RIV/68407700:21260/12:00194024!RIV13-MSM-21260___
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| http://linked.open...avai/predkladatel
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21260/12:00194024
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Welding; GMAW; Al Alloy; 6082; Repair Welding (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Kolařík, Ladislav
- Kovanda, Karel
- Vondrouš, Petr
- Dunovský, Jiří
- Kolaříková, Marie
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| is http://linked.open...avai/riv/vysledek
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