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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005633
EISBN: 978-1-62708-174-0
... Abstract Flash welding, also called flash butt welding, is a resistance welding process in which a butt joint weld is produced by a flashing action and by the application of pressure. The flash welding process consists of preweld preparation, flashing, upsetting (forging), and postweld heat...
Book Chapter

By W.R. Kanne, Jr.
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001367
EISBN: 978-1-62708-173-3
... Abstract Upset welding (UW) is a resistance welding process utilizing both heat and deformation to form a weld. A wide variety of shapes and materials can be joined using upset welding in either a single-pulse or continuous mode. This article discusses the advantages and disadvantages of upset...
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Published: 31 October 2011
Fig. 5 Use of pinch-off dies in upset welding processes to localize strain More
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Published: 31 October 2011
Fig. 1 Flash and upset welding process features (top) with typical profiles of resulting joints (bottom). (a) In flash welding, heating from an arc occurs before the upsetting operation is initiated. (b) In the upset welding process, electric current is applied while the pieces are pressed More
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Published: 01 January 1993
Fig. 21 Weld obtained when using the upset welding process. (a) Workpieces securely clamped in current-carrying dies while pressure and current are applied. (b) Finished weld produced after welding operation is completed More
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Published: 01 January 1993
Fig. 2 Fixturing arrangement for upset welding of cylindrical parts More
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Published: 31 October 2011
Fig. 10 Upset weld configurations in butt welds of pipe with an outside diameter of 25 mm (1 in.) and a wall of 3 mm (0.1 in.). Upset has been machined from the outside surface (on left). The internal upset configuration was controlled by adjusting weld parameters and joint design. (a) Minimum More
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Published: 01 January 1993
Fig. 1 Upset weld configurations in butt welds of pipe with an outside diameter of 25 mm (1 in.) and a wall of 3 mm (0.1 in.). Upset has been machined from the outside surface (on left). The internal upset configuration was controlled by adjusting weld parameters and joint design. (a) Minimum More
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Published: 31 October 2011
Fig. 11 Hardness across upset welds and in materials of various strengths compared to fusion weld hardness. Note that the weld area hardness (and therefore strength) is greater for the upset welds than for the fusion weld. More
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Published: 01 January 1993
Fig. 3 Hardness across upset welds and in materials of various strengths compared to fusion weld hardness. Note that the weld area hardness (and therefore strength) is greater for the upset welds than for the fusion weld. More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003209
EISBN: 978-1-62708-199-3
... Abstract This article describes the mechanism, advantages and disadvantages, fundamentals, capabilities, variations, equipment used, and weldability of metals in solid-state welding processes, including diffusion bonding, explosion welding, friction welding, ultrasonic welding, upset welding...
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Published: 31 October 2011
Fig. 18 (a) Schematic outline of cold butt welding with multiple upset. (b) Cold-butt-welded copper bar with a cross section of 3 × 5 mm (0.12 × 0.20 in.). Source: Ref 16 More
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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
Book Chapter

Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001377
EISBN: 978-1-62708-173-3
... to upset the weld zone. Typical weld durations are 1 to 2 min. A less common procedure is to initially apply high pressure and permit deformation to occur during the heating cycle. Most forge welding employs sufficient pressure to upset the surface until the increase in the surface area is 125% or more...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005567
EISBN: 978-1-62708-174-0
... sequence is: Apply sufficient pressure to firmly seat the faying surfaces against one another. Heat the joint to welding temperature. Rapidly apply additional pressure to mechanically upset the weld zone. Typical weld durations are 1 to 2 min. A less common procedure is to initially apply...
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
... cross-wire welding flash welding high-frequency resistance welding projection welding resistance seam welding resistance spot welding resistance welding seam welding machines stainless steels upset welding welding electrodes RESISTANCE WELDING (RW) encompasses a group of processes...
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Published: 01 January 2002
Fig. 57 Upset butt welded steel wire showing typical acceptable burrs on the welds. Dimensions given in inches More
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Published: 01 January 1993
Fig. 4 Upset plug weld for canister closure. (a) Design of weld joint. (b) Metallographic section showing solid-state weld More
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...
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Published: 31 October 2011
Fig. 12 Upset plug weld for canister closure More