Abstract
| Language | English |
|---|---|
| Pages | 591-596 |
| Journal | Science and Technology of Welding and Joining |
| Volume | 18 |
| Issue number | 7 |
| Early online date | 24 May 2013 |
| DOIs | |
| Publication status | Published - Oct 2013 |
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Keywords
- GTAW
- alternating shielding gases
- GTAW-P
- arc pressure measurement
- Pressure impulse
- current density
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Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 1 : arc pressure measurement. / Campbell, Stuart; Galloway, Alexander; McPherson, Norman.
In: Science and Technology of Welding and Joining, Vol. 18, No. 7, 10.2013, p. 591-596.Research output: Contribution to journal › Article
TY - JOUR
T1 - Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 1
T2 - Science and Technology of Welding and Joining
AU - Campbell, Stuart
AU - Galloway, Alexander
AU - McPherson, Norman
PY - 2013/10
Y1 - 2013/10
N2 - As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on gas shielded welding processes, a comparison between the arc pressures generated using argon, helium, alternating shielding gases and pulsed GTAW has been conducted. Arc pressure variation and peaking are two of the fundamental phenomena produced during the alternating shielding gas process and are said to help create a stirring action within the liquid weld metal. However, there is no published data on arc pressure measurements during an alternating shielding gas supply and, consequently, these phenomena are based solely on theoretical assumptions. The experimental measurements made have shown that alternating shielding gases produces considerably higher arc pressures than argon, helium and pulsed GTAW due to a surge at weld initiation. The transient arc pressure measurements made when using alternating shielding gases are also considerably different from the theoretical assumptions previously reported.
AB - As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on gas shielded welding processes, a comparison between the arc pressures generated using argon, helium, alternating shielding gases and pulsed GTAW has been conducted. Arc pressure variation and peaking are two of the fundamental phenomena produced during the alternating shielding gas process and are said to help create a stirring action within the liquid weld metal. However, there is no published data on arc pressure measurements during an alternating shielding gas supply and, consequently, these phenomena are based solely on theoretical assumptions. The experimental measurements made have shown that alternating shielding gases produces considerably higher arc pressures than argon, helium and pulsed GTAW due to a surge at weld initiation. The transient arc pressure measurements made when using alternating shielding gases are also considerably different from the theoretical assumptions previously reported.
KW - GTAW
KW - alternating shielding gases
KW - GTAW-P
KW - arc pressure measurement
KW - Pressure impulse
KW - current density
UR - http://www.scopus.com/inward/record.url?scp=84883715553&partnerID=8YFLogxK
U2 - 10.1179/1362171813Y.0000000142
DO - 10.1179/1362171813Y.0000000142
M3 - Article
VL - 18
SP - 591
EP - 596
JO - Science and Technology of Welding and Joining
JF - Science and Technology of Welding and Joining
SN - 1362-1718
IS - 7
ER -