HOT WIRE WELDING EQUIPMENT

PROBLEM TO BE SOLVED: To decrease the possibility of the instability of an arc due to a magnetic blowing caused by a wire electric current. SOLUTION: The hot wire welding equipment (TIG welding torch) is provided with a hot wire TIG welding power supply where the energizing term of a heating electri...

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Bibliographic Details
Main Authors NAGASHIMA TOSHIJI, NAKAZAWA NOBUO, HORI KATSUYOSHI
Format Patent
LanguageEnglish
Published 17.04.2001
Edition7
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:PROBLEM TO BE SOLVED: To decrease the possibility of the instability of an arc due to a magnetic blowing caused by a wire electric current. SOLUTION: The hot wire welding equipment (TIG welding torch) is provided with a hot wire TIG welding power supply where the energizing term of a heating electric current for one or more added wires 10 is controlled by being synchronized with an oscillation phase of a TIG arc which oscillates in a wide range where the amplitude is 10 mm or greater and the frequency is 10 Hz or greater. In this case, when two or more wires 10 are used, an energizing time is controlled so that each of the wires 10 is not energized simultaneously and a power supply transformer is so constructed as to supply one or more independent wire heating currents. The energizing term of each heating electric current supplied to plural added wires 10 is controlled to stabilize the magnetic blowing condition of the arc and multiple outputs are available from a single power supply by preventing the simultaneous energizing.
Bibliography:Application Number: JP19990287812