Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64, 31-42
Published online 2016-02-29

Verification of the Quality of the Weld When Utilising the MAG/CO2 Method

Michal Černý1, Petr Dostál1, Pavel Mazal2, Michal Šustr1

1Department of Technology and Automobile Transport, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
2Faculty of Mechanical Engineering, Brno University of Technology, Antonínská 548/1, 601 90 Brno, Czech Republic

In contribution there is described the process of welding by using MAG/CO2 method, mechanical (post fact) and nondestructivein situ) measurement including the discussion of results. The materials of various welding have been used for test. According to ČSN 420002 steel with mark 11 373 has been chosen as a material with guaranteed welding and steel with mark 19 312 has been chosen as a material with hard welding. The sheets with dimensions 30×5×250 mm have been used at welding. The source activity having affect in process of welding is caught on AE records. It is described as per affirmatived forms of individual hits and overshoots at active levels directly into obtained records. The discussion links the findings from visual monitoring of mechanical tests, metallographic and factual monitoring even the acoustic tests. In the field of welding verification stated by producer of steel semifinished products the difference between material with guaranteed welding and material with hard welding by using AE method has been confirmed.


The research has been supported by the project IP 10/2015 „Degradation properties of welded joints“ financed by IGA AF MENDELU. This work is an output of research and scientific activities of NETME Centre, regional R&D centre built with the financial support from the Operational Programme Research and Development for Innovations within the project NETME Centre (New Technologies for Mechanical Engineering), Reg. No. CZ.1.05/2.1.00/01.0002 and, in the follow-up sustainability stage, supported through NETME CENTRE PLUS (LO1202) by financial means from the Ministry of Education, Youth and Sports under the „National Sustainability Programme I“.


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