A study on the improvement of a contact tip for the wire melting rate enhancement
| Autor: | Jin Oh Yun, Ju Ho Han, Jeong-Soo Lee, Sung-Hoon Kim |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Melting rate Materials science Flux-cored arc welding Mechanical Engineering Butt welding Metallurgy Metals and Alloys 02 engineering and technology Welding 021001 nanoscience & nanotechnology 01 natural sciences Finite element method law.invention Mechanics of Materials law 0103 physical sciences Electromagnetic shielding Solid mechanics Metallic materials Composite material 0210 nano-technology |
| Zdroj: | Welding in the World. 61:1181-1187 |
| ISSN: | 1878-6669 0043-2288 |
| DOI: | 10.1007/s40194-017-0494-1 |
| Popis: | Research to improve wire melting rate in flux cored arc welding was conducted. Relationships between contact tip to work-piece distance (hereafter, CTWD) and wire melting rate are discussed with reference to bead on plate welding experiments. As a result of the experiments, wire melting rate could be increased by increasing CTWD but it had some problems such as unstable wire movement and poor shielding. To overcome the problems and to increase the wire melting rate, it is suggested to change the materials of the contact tip. Finite elements analysis was performed to predict temperatures of a welding wire during welding processes and to analyse general situations. Results of finite elements analyses were compared with experimental results. Numerical results show good agreements with experimental results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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