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[ Article ] | |
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 1, pp. 70-75 | |
Abbreviation: J. Korean Soc. Manuf. Technol. Eng. | |
ISSN: 2508-5107 (Online) | |
Print publication date 15 Feb 2018 | |
Received 19 Aug 2017 Revised 31 Oct 2017 Accepted 4 Dec 2017 | |
DOI: https://doi.org/10.7735/ksmte.2018.27.1.70 | |
CFD를 이용한 티타늄 박판 레이저 용접 퍼징장치의 성능예측에 관한 연구 | |
A Study on Performance Prediction of Purging Device using CFD in Laser Welding of Titanium Sheet | |
Byeong-Ju Jina ; Min-Ho Parka ; Tae-Jong Yuna ; Ill-Soo Kima, * ; Ki-Young Parkb ; Young Kimb ; Hae-Jin Yangb
| |
aDept. of Machanical Engineering, Mokpo National University, 1666, Yeongsan-ro, Chonggye-myeon, Muan, Jeonnam-do, 58579, Korea | |
bInstitute for Advanced Engineering, 175-28, Goan-ro, 51 beon-gil, Baegam-myeon, Cheoin-gu, Yongin, Gyeonggi-do, 17180, Korea | |
Correspondence to : *Tel.: +82-61-454-3455, Fax: +82-61-454-6376, E-mail address:ilsookim@mokpo.ac.kr (Ill-Soo Kim). | |
Funding Information ▼ |
As titanium generally combines with oxygen at high temperatures to form a brittle region, the performance of a purging device for shielding welds in titanium welding is an important factor. Therefore, this study is focused on investigating the performance of a purging device. The nozzle length is changed using CFD (Computational Fluid Dynamics) to confirm the shielding performance of the purging device, and the shielding performance is predicted by the volume fraction of the shielding gas at laser beam focus. Next, the quality of the primary welding workpiece is checked. In addition, a hardness test and a tensile test are conducted to confirm the change in mechanical properties according to the nozzle length. A comparison of the calculated and measured results confirmed that a good weld can be obtained when the laser beam focus is more than 67% shielded in the lap-joint welding of a titanium thin plate.
Keywords: Laser welding, Purging device, Titanium sheet, Prediction of shielding gas performance, Lap joint, Computational fluid dynamic |
본 연구는 2015년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임(No. 2015R1D1A3A01020246).
1. | Kearns, W. H., Weisman, C., 1982, Welding Handbook: Metals & Their Weldability, American Welding Society. |
2. | Progress, M., 1977, Data Book, PennWell, Japan. |
3. | Leyens C., Peters, M., 2003, Titanium and Titanium Alloys : Fundamentals and Applications, John Wiley & Sons, Germany. |
4. | Lee, Y. T., Lee, T. H., 2006, Titanium Processing Technology, Korea Metal Journal. |
5. | Korean Welding Society, 1998, Weld Joint Handbook, 278-287. |
6. | Casalino, G., Mortello, M., Campanelli, S. L., 2015, Ytterbium Fiber Laser Welding of Ti-6Al-4V Alloy, Journal of Manufacturing Processes, 20 250-256. |
7. | Schneider, A., Gumenyuk, A., Lammers, M., Malletschek, A., Rethmeier, M., 2014, Laser Beam Welding of Thick Titanium Sheets in the Field of Marine Technology, Physics Procedia 56 582-590. |
8. | Mazumdar, D., Roderick, I. G., 1995, The Physical and Mathematical Modelling of Gas Stirred Ladle Systems, ISIJ International, 35:1 1-20. |
9. | ANSYS Inc., 2016, ANSYS CFX Manual, ANSYS Inc. |
10. | Gatzen, M., Tang, Z., 2010, CFD-Based Model for Melt Flow in Laser Beam Welding of Aluminium With Coaxial Magnetic Field. Physics Procedia, 5 317-326. |
11. | Tani, G., Ascari, A., Campana, G., Fortunato, A., 2007, A Study on Shielding Gas Contamination in Laser Welding of Non-Ferrous Alloys, Applied Surface Science, 254:4 904-907. |
12. | Yi, C. S., Yun, H. J., Song, C. K., Suh, J. S., 2011, A Study on Design of High Pressure Injection Nozzle for Avoiding Chip Curling, Korean Society of Manufacturing Technology Engineers, 20:6 793-798. |
13. | An, I. Y., Lee, Y. L., Jo, W. S., Kim, J. H., 2012, A Study on Development of High Efficiency Toilets With VOF Numerical Analysis, Korean Society of Manufacturing Technology Engineers, 21:6 946-953. |
14. | Jin, B. J., Park, M. H., Yoon, T. J., Kim, Y. J., Kang, B. Y., Shim, J. Y., Kim, I. S., 2017, Optimization of Classifier Operation Conditions Using Taguchi Method and Multiphase Flow Analysis, Korean Society of Manufacturing Technology Engineers, 26:3 278-284. |
15. | Lee, J. Y., Kim, I. S., Choi, Y. D., 2012, A Study on the Optimum Tandem Welding Torch Distance for the Reduction of CO2 Shielding Gas Consumption, Journal of the Korean Society of Marine Engineering 36:2 294-301. |