Abstract
process was studied using a high-speed camera. Overall best results were finally obtained in high welding current spray arc mode (380-400A) with the 1,6mm solid wire and at high welding speed (65cm/min) and two pass per layer sequence, in combination with maximum 30mT magnetic flux density and increased welding voltage (30-31V) for longer arc. A continuously well-formed root with sufficient lateral penetration was achieved and a smooth transition from base metal to weld metal at the lower edges could be achieved. Inside base metal HAZ the
microstructure was fully pearlitic and no soft zone occurred. Furthermore, the size of the HAZ was in comparison
to aluminothermic weld reduced by more than 75% in comparison to an AT rail weld.
| Translated title of the contribution | Metal-Aktivgasschweißen der Wurzel an perlitischen Schienen unter Zuhilfenahme magnetischer Lichtbogenablenkung |
|---|---|
| Original language | English |
| Article number | 02001 |
| Number of pages | 8 |
| Journal | MATEC Web of Conferences |
| Volume | 269 |
| DOIs | |
| Publication status | Published - Jan 2019 |
| Event | 2018 International Conference on Advanced Welding and Smart Fabrication Technologies - Bali, Indonesia Duration: 15 Jul 2018 → 20 Jul 2018 |
Keywords
Fields of Expertise
- Mobility & Production
Cite this
Gas Metal Arc Root Welding of Pearlitic Rails Using Magnetic Arc Deflection. / Weingrill, Leonhard Andreas; Schwald, Martin; Faustmann, Clemens; Frühstück, David; Enzinger, N.
In: MATEC Web of Conferences, Vol. 269, 02001, 01.2019.Research output: Contribution to journal › Article › Research › peer-review
}
TY - JOUR
T1 - Gas Metal Arc Root Welding of Pearlitic Rails Using Magnetic Arc Deflection
AU - Weingrill, Leonhard Andreas
AU - Schwald, Martin
AU - Faustmann, Clemens
AU - Frühstück, David
AU - Enzinger, N
PY - 2019/1
Y1 - 2019/1
N2 - Magnetic arc deflection was applied to improve gas metal arc root welds on R260 pearlitic rail steel foot samples. During laboratory welding trials parameter optimization was carried out which comprised the welding current, voltage and speed, layer sequence, filler wire diameter, and the external magnetic field. Results were evaluated by visual inspection, and the lateral and diagonal penetration in cross-sections, as well as the microstructure and the hardness in the HAZ. Additionally, the influence of the external magnetic field on theprocess was studied using a high-speed camera. Overall best results were finally obtained in high welding current spray arc mode (380-400A) with the 1,6mm solid wire and at high welding speed (65cm/min) and two pass per layer sequence, in combination with maximum 30mT magnetic flux density and increased welding voltage (30-31V) for longer arc. A continuously well-formed root with sufficient lateral penetration was achieved and a smooth transition from base metal to weld metal at the lower edges could be achieved. Inside base metal HAZ themicrostructure was fully pearlitic and no soft zone occurred. Furthermore, the size of the HAZ was in comparisonto aluminothermic weld reduced by more than 75% in comparison to an AT rail weld.
AB - Magnetic arc deflection was applied to improve gas metal arc root welds on R260 pearlitic rail steel foot samples. During laboratory welding trials parameter optimization was carried out which comprised the welding current, voltage and speed, layer sequence, filler wire diameter, and the external magnetic field. Results were evaluated by visual inspection, and the lateral and diagonal penetration in cross-sections, as well as the microstructure and the hardness in the HAZ. Additionally, the influence of the external magnetic field on theprocess was studied using a high-speed camera. Overall best results were finally obtained in high welding current spray arc mode (380-400A) with the 1,6mm solid wire and at high welding speed (65cm/min) and two pass per layer sequence, in combination with maximum 30mT magnetic flux density and increased welding voltage (30-31V) for longer arc. A continuously well-formed root with sufficient lateral penetration was achieved and a smooth transition from base metal to weld metal at the lower edges could be achieved. Inside base metal HAZ themicrostructure was fully pearlitic and no soft zone occurred. Furthermore, the size of the HAZ was in comparisonto aluminothermic weld reduced by more than 75% in comparison to an AT rail weld.
KW - Schienenschweißen
KW - Perlit
U2 - 10.1051/matecconf/201926902001
DO - 10.1051/matecconf/201926902001
M3 - Article
VL - 269
JO - MATEC Web of Conferences
JF - MATEC Web of Conferences
SN - 2261-236X
M1 - 02001
ER -