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seaming

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Published: 01 January 2005
Fig. 5 Four degrees of susceptibility to seaming during thread rolling. (a) Negative susceptibility to form seams. Metal flow adjacent to the die surface is slower than in the middle of the roll form. This is characteristic of metals having a relatively high coefficient of friction More
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Published: 01 January 1989
Fig. 5 Four degrees of susceptibility to seaming during thread rolling. (A) Negative susceptibility to form seams. Metal flow adjacent to the die surface is slower than in the middle of the roll form. This is characteristic of metals having a relatively high coefficient of friction More
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Published: 30 November 2018
Fig. 11 (a) Examples of sheet metal joints created by seaming (hemming). (b) Examples of cupped or tubular parts with seamed joints More
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005608
EISBN: 978-1-62708-174-0
... Abstract This article describes the process applications, advantages, and limitations of resistance seam welding. The fundamentals of lap seam welding are also reviewed. The article details the types of seam welds, namely, lap seam welds and mash seam welds, and the processing equipment used...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001365
EISBN: 978-1-62708-173-3
... Abstract Resistance seam welding (RSEW) is a process in which the heat generated by resistance to the flow of electric current in the work metal is combined with pressure to produce a welded seam. This article discusses the various classes of the RSEW process, namely roll spot welding...
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Published: 01 January 1993
Fig. 11 Process variations of seam welding. (a) Lap seam welding. (b) Mash seam welding. (c) Metal finish seam welding. (d) Electrode wire seam welding. (e) Foil butt seam welding More
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Published: 01 January 2002
Fig. 26 Seam in rolled 4130 steel bar (a) Closeup of seam. Note the linear characteristics of this flaw. (b) Micrograph showing cross section of the bar. Seam is normal to the surface and filled with oxide. 30× More
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Published: 31 October 2011
Fig. 2 (a) Lap seam weld, (b) mash seam weld with flat electrodes, and (c) mash seam weld with radiused (contoured) electrodes. Flat electrodes in mash seam welding should not be used when sheet thickness is less than 1mm (0.040 in.). Radiused electrodes can be used for sheet thicker than 1mm More
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Published: 31 October 2011
Fig. 18 Diagrams of seam and mash seam welding More
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Published: 01 January 2006
Fig. 17 Muffler lock seam constructions. The double-lock seam construction (right) helps prevent liquid penetration between the wraps. More
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Published: 30 August 2021
Fig. 9 Seam in rolled 4130 steel bar. (a) Closeup of seam. Note the linear characteristics of this flaw. (b) Micrograph showing cross section of the bar. Seam is normal to the surface and filled with oxide. Original magnification: 30× More
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Published: 15 January 2021
Fig. 36 (a) Surface of Ti-6Al-4V bar with seams. (b) Section through seams showing oxide and blunt tips. Kroll’s etch More
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Published: 01 January 2005
Fig. 23 Ground-speed brake cylinder-actuator forging that was cored and forged seamless (flashless) in a multiple-ram press. See Example 1. Dimensions in figure given in inches Material Aluminum alloy 7079 Heat treatment (temper) T611 Mechanical properties (a) Inspection P... More
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Published: 01 January 2005
Fig. 34 (a) Seams and (b) slivers caused in rolled material by the presence of surface inclusions. Courtesy of V. Demski, Teledyne Rodney Metals More
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Published: 01 January 2005
Fig. 4 Seam at crest of thread caused by faster metal flow along flanks of die thread More
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Published: 01 January 2005
Fig. 20 Effect of three different thread forms on seam formation at thread crest, and the rolled shape of the workpiece at three levels of die penetration (30, 60, and 90%) More
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Published: 01 January 2002
Fig. 25 Micrograph of a seam in a cross section of a 19 mm (0.75 in.) diameter medium-carbon steel bar showing oxide and decarburization in the seam. 350× More
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Published: 01 January 2002
Fig. 32 Photograph of catastrophic fishmouth rupture of seam-welded high-energy piping. These failures are typically brittle and are not predicted using simple life fraction rule calculations. More
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Published: 01 January 1989
Fig. 13 Tapping of seam-welded couplings Tap details Material M1 high-speed steel Number of flutes 6 Overall length, mm (in.) 380 (15) Chamfer length, mm (in.) 27.4 (1 5 64 ) Chamfer angles (double) 10° 15′ and 4° 36′ Operating conditions Speed More
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Published: 01 January 1989
Fig. 4 Seam at crest of thread caused by faster metal flow along flanks of die thread More