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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005583
EISBN: 978-1-62708-174-0
... Abstract High-frequency resistance welding (HFRW) is a process that uses high-frequency currents to concentrate the welding heat at the desired location. This article focuses on the fundamentals, advantages, limitations, and applications of HFRW. It discusses the personnel and equipment...
Abstract
High-frequency resistance welding (HFRW) is a process that uses high-frequency currents to concentrate the welding heat at the desired location. This article focuses on the fundamentals, advantages, limitations, and applications of HFRW. It discusses the personnel and equipment requirements as well as safety considerations necessary for the process. The article concludes with a discussion on the techniques for inspection and quality control of HFRW.
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001368
EISBN: 978-1-62708-173-3
... Abstract High-frequency (HF) welding is a welding process in which the heat source used to melt the joining surfaces is obtained from HF alternating current (ac) resistance heating. This article discusses the advantages and disadvantages and applications of HF welding. It describes...
Abstract
High-frequency (HF) welding is a welding process in which the heat source used to melt the joining surfaces is obtained from HF alternating current (ac) resistance heating. This article discusses the advantages and disadvantages and applications of HF welding. It describes the equipment used for HF welding and the safety aspects to be considered during welding. The article concludes with a discussion on inspection and quality control.
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Eddy current distribution while applying low frequency vs. high frequency. ...
Available to PurchasePublished: 09 June 2014
Fig. 20 Eddy current distribution while applying low frequency vs. high frequency. Source: Ref 6
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(a) Line-frequency and (b) medium-frequency mains connection of induction f...
Available to PurchasePublished: 09 June 2014
Fig. 15 (a) Line-frequency and (b) medium-frequency mains connection of induction furnaces. Source: Ref 11
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Power supply output at resonant frequency. SP, set point; LF, low frequency...
Available to PurchasePublished: 30 September 2014
Fig. 12 Power supply output at resonant frequency. SP, set point; LF, low frequency; HF, high frequency. Source: Ref 9
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Predicted frequency of occurrence as compared with actual frequency of occu...
Available to PurchasePublished: 01 January 2000
Fig. 14 Predicted frequency of occurrence as compared with actual frequency of occurrence of event. Event is defects per mile, see text for explonation. Curved line represents a trend and does not imply a continuous function.
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Inductoheat's single-coil dual-frequency system comprises medium-frequency ...
Available to PurchasePublished: 01 November 2010
Fig. 76 Inductoheat's single-coil dual-frequency system comprises medium-frequency (10 kHz) and high-frequency (120 to 400 kHz) modules working simultaneously or in any sequence desirable to optimize properties of induction heat treated gearlike components. Total power exceeds 1200 kW. Source
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Laser frequency response test. (a) Full test frequency range (0 to 300 Hz)....
Available to Purchase
in Methodologies and Implementation of Laser Powder-Bed Fusion Process Control
> Additive Manufacturing Design and Applications
Published: 30 June 2023
Fig. 11 Laser frequency response test. (a) Full test frequency range (0 to 300 Hz). (b) Enlarged view at approximately 75 to 100 Hz. X c , commanded position; X m , measured position
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Published: 01 August 2013
Fig. 8 Basic elements of high-frequency resistance surface hardening
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Published: 01 August 2013
Fig. 15 Particle classification curves. (a) Cumulative. (b) Frequency
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Effect of change of frequency on current pattern in pulsed-current plating....
Available to PurchasePublished: 01 January 1994
Fig. 9 Effect of change of frequency on current pattern in pulsed-current plating. Only pulse width is altered; peak current, average current, and duty cycle remain constant.
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Radio-frequency plasma CVD reactor configured for deposition on silicon waf...
Available to PurchasePublished: 01 January 1994
Fig. 2 Radio-frequency plasma CVD reactor configured for deposition on silicon wafers
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Energy flow for melting of cast iron in a medium-frequency induction crucib...
Available to Purchase
in Energy and Environmental Aspects of Induction Melting Processes
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 5 Energy flow for melting of cast iron in a medium-frequency induction crucible furnace
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in Fundamentals and General Aspects of Power Supply Design for Induction Heating, Heat Treating, Welding, and Melting
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 16 Frequency response of resonance circuit
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Simultaneous dual-frequency heat treating system. Courtesy of Inductoheat, ...
Available to Purchase
in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 17 Simultaneous dual-frequency heat treating system. Courtesy of Inductoheat, Inc.
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Gears processed with simultaneous dual frequency. Courtesy of Inductoheat, ...
Available to Purchase
in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 19 Gears processed with simultaneous dual frequency. Courtesy of Inductoheat, Inc.
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Shaft hardened with independently controlled frequency and power (IFP) powe...
Available to Purchase
in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 21 Shaft hardened with independently controlled frequency and power (IFP) power supply showing the effect of varying frequency “on the fly” during the scan. Courtesy of Radyne Corporation
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Shaft showing the resulting pattern from varying frequency while approachin...
Available to Purchase
in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 22 Shaft showing the resulting pattern from varying frequency while approaching a shoulder area on a scan heat treat. Courtesy of Radyne Corporation
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Frequency diversity allows the heat treater to optimize penetration depth t...
Available to Purchase
in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 23 Frequency diversity allows the heat treater to optimize penetration depth to complex geometries, (a) driving energy deeper to avoid overheating and cracking in shoulders and (b) to reach in to grooves.
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An independently controlled frequency and power (IFP) induction heating pow...
Available to Purchase
in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 25 An independently controlled frequency and power (IFP) induction heating power supply under test. Courtesy of Radyne Corporation
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