Browse > Article
http://dx.doi.org/10.5574/KSOE.2013.27.5.077

Effects of Welding Parameters on Diffusible Hydrogen Contents in FCAW-S Weld Metal  

Bang, Kook-Soo (Department of Materials System Engineering)
Park, Chan (Department of Materials Science and Engineering)
Publication Information
Journal of Ocean Engineering and Technology / v.27, no.5, 2013 , pp. 77-81 More about this Journal
Abstract
The effects of the welding parameters, contact tip-to-workpiece distance (CTWD), current, and voltage on the diffusible hydrogen content in weld metal deposited by self-shielded flux cored arc welding were investigated and rationalized by comparing the amount of heat generated in the extension length of the wire. This showed that as CTWD increased from 15mm to 25mm, the amount of heat generated was increased from 71.1J to 174.8J, and the hydrogen content was decreased from 11.3mL/100g to 5.9mL/100 g. Even if little difference was observed in the amount of heat generated, the hydrogen content was increased with an increase in voltage because of the longer arc length. A regression analysis showed that the regression coefficient of voltage in self-shielded flux cored arc welding is greater than that in $CO_2$ arc welding. This implies that voltage control is more important in self-shielded flux cored arc welding than in $CO_2$ arc welding.
Keywords
Diffusible hydrogen content; Welding parameters; FCAW-S weld metal;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Boniszewski, T., 1992. Self-Shielded Arc Welding. Abington Publishing, Cambridge
2 Easterling, K., 1992. Introduction to the Physical Metallurgy of Welding. 2nd Edition, Butterworth-Heinemann, Oxford
3 Dixon, B., Hakansson, K., 1995. Effects of Welding Parameters on Weld Zone Toughness and Hardness in 690MPa Steel. Welding Journal, 74(4), 122s-132s
4 Haeck, R., Phelps, B., Smith, A., 1980. Developing Consumables and Process for Work on Offshore Platforms. Welding & Metal Fabrication, 48(9), 441-449
5 Han, D.W., Bang, K.S., Jeong, H.C., Lee, J.B., 2010. Quantitative Analysis on the Effects of Welding Parameters on Diffusible Hydrogen Contents in Weld Metal Produced by FCAW Process. Journal of Korean Welding and Joining Society, 28(2), 54-59   과학기술학회마을   DOI   ScienceOn
6 Harwig, D., Longenecker, D., Cruz, J., 1999. Effects of Welding Parameters and Electrode Atmospheric Exposure on the Diffusible Hydrogen Content of Gas Shielded Flux Cored Arc Welds. Welding Journal, 78(9), 314s-321s
7 Keeler, T., 1981a. Innershield Welding. Part 1 Development and Applications. Metal Construction, 13(11), 667-673
8 Keeler, T., 1981b. Innershield Welding. Part 2 Properties. Metal Construction, 13(12), 750-753
9 Kiefer, J., 1996. Effects of Moisture Contamination and Welding Parameters on Diffusible Hydrogen. Welding Journal, 75(5), 155s-161s
10 Pittrun, M., 2004. The Effect of Welding Parameters on Levels of Diffusible Hydrogen in Weld Metal Deposited Using Gas Shielded Rutile Flux Cored Wires, Ph. D. Thesis, The University of Wollongong
11 Rodergs, K., Lochhead, J., 1987. Self-Shielded Flux Cored Arc Welding - The Route to Good Fracture Toughness. Welding Journal, 66(7), 49-59
12 White, D., Pollard, G., Gee, R., 1992. The Effect of Welding Parameters on Diffusible Hydrogen Levels in Cored Wire Welding, Welding & Metal Fabrication, 60(6), 209-216