Maksuti, Rrahim and Osmani, Hysni (2020) Quality Evaluation of High-Frequency Electric Resistance Welded Joint. Journal of Applied Sciences-SUT JAS-SUT, 6 (11-12). pp. 149-154. ISSN 2671-3047
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Text (Quality Evaluation of High-Frequency Electric Resistance Welded Joint)
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Abstract
Aim: This article aims to evaluate the quality of welded joint by solid-state high-frequency electric resistance welding (HF-ERW), which is one of the most common processes for the production of longitudinal welded carbon steel pipes, mainly used as line pipes, casing, tubing as well as in machine structures in a wide range of applications including different industrial field. The production process involved pipe forming by gradually cold plastic deformation of hot rolled strips and joining the strip edges by a combination of localized high-frequency electric resistance conductive heating and mechanical pressure by forge rolls. Heat input in combination with mechanical pressure is key process parameters for high-frequency electric resistance welding. Method: These process parameters that have a determining influence on the welding process must be continuously monitored, and to evaluate the quality of the chosen steel welded joint, in this research was performed destructive testing. In this respect were performed to determine the welded joint integrity, mechanical testing, and metallographic analysis, the welded joint cross-section, as the most direct and effective methods to evaluate the quality of the welded joint. Specimens for mechanical testing and metallographic analysis were taken from the welded joint, transversally to the welding direction. Results: The obtained results from the mechanical testing and metallographic analysis in this work give indirectly important information related to the welding process parameters and directly, bring the necessary information for the quality evaluation of the welded joint. Conclusion: Based on these results, it is concluded that mechanical properties and metallographic analysis are very important characteristics for quality evaluation of the welded joint.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | steel pipes, welded joint, quality evaluation, mechanical testing, metallographic analysis |
| Subjects: | A General Works > AI Indexes (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Unnamed user with email zshi@unite.edu.mk |
| Date Deposited: | 18 Nov 2020 10:20 |
| Last Modified: | 03 Dec 2020 11:04 |
| URI: | http://eprints.unite.edu.mk/id/eprint/632 |
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