Mapping the droplet transfer modes for an ER100S-1 GMAW electrode

Journal Article · Tue Feb 01 00:00:00 EST 1994 · Welding Journal (Miami); (United States)

OSTI ID:5122070

Heald, P R ^[1]; Madigan, R B; Siewert, T A ^[2]; Liu, S ^[3]

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1. Phillips 66 Co., Borger, TX (United States). Refining Div.
2. NIST, Boulder, CO (United States). Materials Reliability Div.
3. Colorado School of Mines, Golden, CO (United States). Center for Welding and Joining Research

Welds were made with a 1.2-mm-diameter AWS ER100S-1 electrode using Ar-2% O[sub 2] shielding gas to map the effects of contact-tube-to-work distance (13, 19 and 25 mm), current, voltage, and wire feed rate on metal transfer. The droplet transfer modes were identified for each map by both the sound of the arc and images from a laser back-lit high-speed video system. The modes were correlated to digital records of the voltage and current fluctuations. The maps contain detailed information on the spray transfer mode, including the boundaries of drop spray, streaming spray and rotating spray modes. The metal transfer mode boundaries shifted with an increase in contact-tube-to-work distance. Increasing the contact-tube-to-work distance from 13 to 19 mm resulted in a 15 mm/s increase in the wire feet rate for the globular-to-drop-spray transition.

• OSTI ID: 5122070
• Journal Information: Welding Journal (Miami); (United States), Vol. 73:2; ISSN 0043-2296
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GAS METAL-ARC WELDING
DIAGNOSTIC TECHNIQUES
ARTIFICIAL INTELLIGENCE
MASS TRANSFER
MONITORING
PROCESS CONTROL
WELDING MACHINES
WELDING RODS
ARC WELDING
CONTROL
FABRICATION
JOINING
WELDING
360101* - Metals & Alloys- Preparation & Fabrication