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power sources
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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005565
EISBN: 978-1-62708-174-0
... Abstract This article describes the characteristics and technology of power sources for major arc welding methods along with the suggested criteria for assuring that a power source selection can safely deliver the desired output and yield long service life. Power sources with single-phase AC...
Abstract
This article describes the characteristics and technology of power sources for major arc welding methods along with the suggested criteria for assuring that a power source selection can safely deliver the desired output and yield long service life. Power sources with single-phase AC input voltage, three-phase input machines, inverter-based power sources, short arc gas metal arc welding power sources, and multiple arc power sources are discussed. The article also presents the factors to be considered when selecting a power source.
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001337
EISBN: 978-1-62708-173-3
... Abstract Power sources are apparatuses that are used to supply current and voltages that are suitable for particular welding processes. This article describes power sources for arc welding, resistance welding, and electron-beam welding. The more-common welding processes that use constant...
Abstract
Power sources are apparatuses that are used to supply current and voltages that are suitable for particular welding processes. This article describes power sources for arc welding, resistance welding, and electron-beam welding. The more-common welding processes that use constant-current and constant-voltage power sources are listed in a table. The article describes the open-circuit voltage characteristics and power source control methods. The control methods employ either pulse width modulation (PWM) or frequency modulation (FM).
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Published: 01 January 1993
Fig. 2 Selected alternating current power sources. (a) Alternating current welding transformer, adjustable core or windings. (b) Three-phase SCR-controlled dc welding power source. (c) Inverter block diagram. (d) Motor-generator set. (e) Engine-driven alternator with dc output. (f) Secondary
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Published: 01 January 1993
Fig. 4 Volt-ampere curves of typical dc power sources. (a) Constant-current source. (b) Constant-voltage source
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Published: 01 January 1993
Fig. 2 Starting current waveforms of two power sources to show relative response times of each source. (a) Thyristor-controlled source. (b) Inverter-controlled source. Faster response of inverter-controlled arc welding machine (2 ms to go from 0 to 100 A) indicates a more stable arc.
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Published: 31 October 2011
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Published: 09 June 2014
Fig. 26 Comparison of induced power density (heat sources) using a wider copper-face turn with smaller and larger air gaps. Source: Ref 32
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Published: 31 October 2011
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Published: 31 October 2011
Fig. 4 Graphical representation of a fast-moving high-power source in a thin plate. Source: Ref 1
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Published: 31 October 2011
Fig. 5 Carbon arc welding shop of the late 1800s. The power source is a bank of batteries. Note the dynamo on the right.
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in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 9 General induction heater scheme. A power source, typically the ac line, is rectified and filtered, yielding dc with the required voltage or current. The input rectifier may include a preconverter for power factor correction, adjustable output voltage or current, etc., as required
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Published: 01 January 1993
Fig. 5 300 A rated conventional line-frequency power source (right) and inverter power source with same rating (left). Courtesy of Miller Electric Manufacturing Company, Inc.
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Published: 01 January 1993
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Published: 01 January 1993
Fig. 8 Circuit diagram of three-plate half-wave resistance welding power source with primary rectification
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Published: 01 January 1993
Fig. 9 Circuit diagram of three-phase full-wave resistance welding power source with secondary rectification
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Published: 31 October 2011
Fig. 12 Three-phase, constant current/variable voltage, direct current power source. SCR, silicon-controlled rectifier
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Published: 31 October 2011
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Published: 31 October 2011
Fig. 5 Circuit diagram of three-phase half-wave resistance welding power source with primary rectification
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Published: 31 October 2011
Fig. 6 Circuit diagram of three-phase full-wave resistance welding power source with secondary rectification
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Published: 01 January 1989
Fig. 1 Schematic of setup for ECDG. The power source provides either an ac output at 60 Hz or a pulsing dc output at 120 Hz (see text). The workpiece is positively charged (anode) when direct current is used.
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