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Title: High-bandwidth continuous-flow arc furnace

A high-bandwidth continuous-flow arc furnace for stream welding applications includes a metal mass contained in a crucible having an orifice. A power source charges an electrode for generating an arc between the electrode and the mass. The arc heats the metal mass to a molten state. A pressurized gas source propels the molten metal mass through the crucible orifice in a continuous stream. As the metal is ejected, a metal feeder replenishes the molten metal bath. A control system regulates the electrode current, shielding gas pressure, and metal source to provide a continuous flow of molten metal at the crucible orifice. Independent control over the electrode current and shield gas pressure decouples the metal flow temperature and the molten metal flow rate, improving control over resultant weld characteristics. 4 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
288031
Assignee:
Massachusetts Inst. of Tech., Cambridge, MA (United States) PTO; SCA: 320303; 360101; PA: EDB-96:135070; SN: 96001636041
Patent Number(s):
US 5,544,195/A/
Application Number:
PAN: 8-359,158
Contract Number:
FG02-85ER13331
Resource Relation:
Other Information: PBD: 6 Aug 1996
Research Org:
Massachusetts Institute of Technology
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; WELDING MACHINES; ARC FURNACES; DESIGN; LIQUID METALS; MATERIALS HANDLING EQUIPMENT; ELECTRIC CURRENTS; CONTROLLED ATMOSPHERES