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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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Two methods of high-frequency welding of longitudinal seams in tubing. (a) ...
Available to PurchasePublished: 01 January 2006
Fig. 10 Two methods of high-frequency welding of longitudinal seams in tubing. (a) Sliding contacts introduce current to the tube edges. (b) Multiturn induction coil induces current to the tube edges.
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Published: 31 October 2011
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Typical high-frequency welding applications used to join plates and to form...
Available to Purchase
in Procedure Development and Practice Considerations for Resistance Welding[1]
> Welding, Brazing, and Soldering
Published: 01 January 1993
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Published: 01 January 1993
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Basic joint designs for high-frequency welds in pipe, tube, sheet, and bar ...
Available to PurchasePublished: 31 October 2011
Fig. 3 Basic joint designs for high-frequency welds in pipe, tube, sheet, and bar stock. Source: Ref 1
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Flaws occurring in high-frequency-welded steel tube and pipe. (a) Lack of f...
Available to PurchasePublished: 01 August 2018
Fig. 10 Flaws occurring in high-frequency-welded steel tube and pipe. (a) Lack of fusion, whole seam. (b) Lack of fusion, partial (mating fracture surfaces). ID, inside diameter; OD, outside diameter. (c) Entrapment, oxides. (d) Entrapment, black spot. (e) Prearc. (f) Porosity. (g) Cold weld
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Published: 31 October 2011
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Schematic of high-frequency induction welding apparatus for joining a tube ...
Available to PurchasePublished: 31 October 2011
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Published: 01 December 1998
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Longitudinal butt seam welding a tube by (a) high-frequency resistance heat...
Available to PurchasePublished: 30 November 2018
Fig. 12 Longitudinal butt seam welding a tube by (a) high-frequency resistance heating and (b) high-frequency induction heating
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Published: 30 November 2018
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in Procedure Development and Practice Considerations for Resistance Welding[1]
> Welding, Brazing, and Soldering
Published: 01 January 1993
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Published: 01 January 1993
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006514
EISBN: 978-1-62708-207-5
... Abstract The resistance welding processes commonly employed for joining aluminum are resistance spot welding, resistance seam welding, resistance roll welding, upset and flash welding for butt joining welding, and high-frequency resistance welding. This article discusses the general factors...
Abstract
The resistance welding processes commonly employed for joining aluminum are resistance spot welding, resistance seam welding, resistance roll welding, upset and flash welding for butt joining welding, and high-frequency resistance welding. This article discusses the general factors affecting resistance welding: electrical and thermal conductivities, rising temperature, plastic range, shrinkage, and surface oxide. It reviews the weldability of base materials such as Alclad alloys and aluminum metal-matrix composites. The article describes the joint design and welding procedures for resistance spot welding, as well as the joint type, equipment, and welding procedures for seam and roll spot welding. It concludes with information on flash welding, high-frequency welding, and cross-wire welding.
Book Chapter
Other Fusion Welding Processes
Available to PurchaseSeries: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003208
EISBN: 978-1-62708-199-3
... Abstract This article discusses the principles of operation, equipment needed, applications, and advantages and disadvantages of various fusion welding processes, namely, oxyfuel gas welding, electron beam welding, stud welding, laser beam welding, percussion welding, high-frequency welding...
Abstract
This article discusses the principles of operation, equipment needed, applications, and advantages and disadvantages of various fusion welding processes, namely, oxyfuel gas welding, electron beam welding, stud welding, laser beam welding, percussion welding, high-frequency welding, and thermite welding.
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Schematic of a hook crack in a pipe caused by pipe-wall delamination after ...
Available to PurchasePublished: 01 January 2002
Fig. 60 Schematic of a hook crack in a pipe caused by pipe-wall delamination after high-frequency welding. The “hook” has turned outward to follow the direction of metal flow in the outer portion of the upset weld zone.
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Book Chapter
Procedure Development and Practice Considerations for Resistance Welding
Available to PurchaseSeries: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001443
EISBN: 978-1-62708-173-3
... on flash welding, high-frequency resistance welding, and capacitor discharge stud welding. It concludes with a discussion on resistance welding of stainless steels, aluminum alloys, and copper and copper alloys. aluminum alloys capacitor discharge stud welding clamping dies copper copper alloys...
Abstract
Resistance welding (RW) encompasses a group of processes in which the heat for welding is generated by the resistance to the flow of electrical current through the parts being joined. The three major resistance welding processes are resistance spot welding (RSW), resistance seam welding (RSEW), and projection welding (PW). This article addresses the considerations for using these processes to join specific types of materials. It discusses the process variations, applicability, advantages, and limitations of these resistance welding processes. The article provides information on flash welding, high-frequency resistance welding, and capacitor discharge stud welding. It concludes with a discussion on resistance welding of stainless steels, aluminum alloys, and copper and copper alloys.
Book Chapter
Magnetic Flux Controllers in Induction Heating and Melting
Available to PurchaseSeries: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005846
EISBN: 978-1-62708-167-2
... through a final set of rollers that close the profile of the tube and welding occurs. Induction welding systems for steel tubing operate at high frequencies (100−500 kHz) and high power (in the range of 100 kW to a few MWs). Figure 21 shows a schematic of current flow in the tube in a typical...
Abstract
Magnetic flux controllers are materials other than the copper coil that are used in induction systems to alter the flow of the magnetic field. This article describes the effects of magnetic flux controllers on common coil styles, namely, outer diameter coils, inner diameter coils, and linear coils. It provides information on the role of magnetic flux controllers for whole-body and local area mass-heating applications, continuous induction tube welding, seam-annealing inductors, and various induction melting systems, namely, channel-type, crucible-type, and cold crucible systems. The article also describes the benefits of the flux controllers for induction heat treating processes such as single-shot and scanning.
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