Influence of welding current in resistance spot welding on the properties of Zn coated steel DX51D
The paper deals with the resistance spot welding of three galvanized car body sheets DX51D + Z - EN 10142/2000. The quality of welded joints was evaluated by destructive tests and non-destructive tests. For evaluation of joints quality the shear tension test on spot joints according to DIN 50 124...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Prince of Songkla University
2016-06-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | http://rdo.psu.ac.th/sjstweb/journal/38-3/38-3-2.pdf |
| Summary: | The paper deals with the resistance spot welding of three galvanized car body sheets DX51D + Z - EN 10142/2000.
The quality of welded joints was evaluated by destructive tests and non-destructive tests. For evaluation of joints quality the
shear tension test on spot joints according to DIN 50 124 standard was used. The influence of welding parameters on the
structure of a welded joint was observed by metallographic analysis. Influence of welding current from 6.0 to 7.7 kA and
influence of welding time from 10 to 12 periods on weld properties was observed. Increasing the welding current led to
increased load-bearing capacity of the welded joints. The spot welded joints without any internal defects occurred in samples
welded up to 7.0 kA. Increasing the welding time to 12 periods led to increased load-bearing capacity of the welded joints,
within all observed values of welding current. |
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| ISSN: | 0125-3395 |