Metodologia para parametrizar e avaliar a técnica da ''burn-zinc'' no processo de soldagem a ponto por resistência Methodology for parameterize and assessment of the burn-zinc technique in the resistance spot welding process
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Abstract
For minimizing the detrimental effects of zinc during resistance spot welding of galvanized sheets, a technique denominated Burn-Zinc is usually employed. However, there is no much information and studies available in the current literature about when and how to use this technique. The present work had the objective of assessing and understanding better this technique. For that, a methodology for determination of ideal burn-zing parameters as a function of the sheets was proposed. The evaluation of this methodology was carried out by a series of weldments, by systematically varying current and pressure at compatible levels for zinc burning. High speed filming, synchronized with the electrical signals, was employing for visualizing and results analyses. Once the burn-zinc parameters were defined, new weldments were done with and without the burn-zing application. The proposed experimental procedure showed to be efficient for checking and parameterization of the burn-zing technique. However, there were evidences that not always the application of the burn-zing will lead to reduction of the operational time.
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nascimento2010metodologiasoldagem
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| Authors | Nascimento, Vinicius Castanheira do;Scotti, Américo; |
| Journal | soldagem & inspeção |
| Year | 2010 |
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