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Book Chapter

By Menachem Kimchi
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...
Book Chapter

By Warren Smith, Julian Roberts
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...
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Published: 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. More
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Published: 31 October 2011
Fig. 7 Manufacturing a spiral-fin tube using high-frequency welding More
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Published: 01 January 1993
Fig. 22 Typical high-frequency welding applications used to join plates and to form tubes More
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Published: 01 January 1993
Fig. 2 Manufacturing a spiral fin tube using high-frequency welding More
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Published: 31 October 2011
Fig. 3 Basic joint designs for high-frequency welds in pipe, tube, sheet, and bar stock. Source: Ref 1 More
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Published: 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 More
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Published: 31 October 2011
Fig. 1 Coil and pressure rolls in high-frequency seam welding of a tube More
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Published: 31 October 2011
Fig. 2 Schematic of high-frequency induction welding apparatus for joining a tube seam More
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Published: 01 December 1998
Fig. 3 Joining a tube seam by high-frequency induction welding More
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Published: 30 November 2018
Fig. 12 Longitudinal butt seam welding a tube by (a) high-frequency resistance heating and (b) high-frequency induction heating More
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Published: 30 November 2018
Fig. 14 Coil and pressure rolls in high-frequency seam welding of a tube. Source: Ref 8 More
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Published: 01 January 1993
Fig. 23 High-frequency longitudinal butt seam welding of a tube More
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Published: 01 January 1993
Fig. 1 Joining a tube seam by high-frequency induction welding More
Book Chapter

By D.J. Spinella
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...
Book Chapter

Series: 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...
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Published: 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. More
Series: 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...
Series: 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...