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projection welding

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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005626
EISBN: 978-1-62708-174-0
... Abstract Projection welding is a variation of resistance welding in which current flow is concentrated at the point of contact with a local geometric extension of one (or both) of the parts being welded. This article focuses on the process fundamentals, advantages, and limitations of projection...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001364
EISBN: 978-1-62708-173-3
... Abstract Projection welding (PW) is a variation of resistance welding in which current flow is concentrated at the point of contact with a local geometric extension of one (or both) of the parts being welded. This article discusses the applications of PW generally categorized as either embossed...
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Published: 31 October 2011
Fig. 14 Characteristics of projection collapse during annular-projection welding with different base projection widths. (a) Short weld time, full-width projection. (b) Correct weld time, full-width projection. (c) Excessive weld time, full-width projection. (d) Correct weld time, reduced-width More
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Published: 01 January 1993
Fig. 6 Characteristics of projection collapse during annular projection welding with different base projection widths. (a) Short weld time, full-width projection. (b) Correct weld time, full-width projection. (c) Excessive weld time, full-width projection. (d) Correct weld time, reduced-width More
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Published: 01 December 1998
Fig. 8 Low-inertia welding head for projection welding setup. (a) Welding head in open position. (b) Welding head in position for squeezing and heating projection. (c) Welding head at instant of projection collapse and start of nugget formation More
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Published: 01 June 2012
Fig. 6 Resistance welding processes. (a) Projection welding for sheet welding. (b) Resistance butt welding. (c) Resistance seam welding More
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Published: 30 September 2015
Fig. 2 Resistance projection welding application joining an intermediate-density powder metallurgy spur gear to a low-carbon wrought steel stamping More
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Published: 31 October 2011
Fig. 7 Current waveform for a capacitive discharge projection welding system. Plot is generated using Eq 6 to 8 , with a capacitance of 2400 μFd, a charge voltage of 2000 V, a transformer windings ratio of 100:1, a secondary inductance of 0.27 μH, and a secondary resistance of 175 μΩ. More
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Published: 31 October 2011
Fig. 2 Typical stacked configuration for embossed-projection welding of sheet More
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Published: 31 October 2011
Fig. 3 Typical configuration for solid-projection welding More
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Published: 31 October 2011
Fig. 12 Typical fast followup (low-inertia) head for projection welding. (a) In open position. (b) In position for squeezing and heating the projection. (c) At instant of projection collapse and start of nugget formation More
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Published: 31 October 2011
Fig. 18 Example of expulsion during projection welding More
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Published: 01 December 1998
Fig. 7 Development of weld nugget during projection welding of embossed spherical projections More
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Published: 01 January 1993
Fig. 13 Schematics showing selected setups which can be used in projection welding operations More
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Published: 01 January 1993
Fig. 14 Formation of a weld nugget during projection welding of an embossed spherical projection. See text for explanation. More
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Published: 01 January 1993
Fig. 1 Typical stacked configuration for embossed-projection welding of sheet More
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Published: 01 January 1993
Fig. 2 Typical configuration for solid-projection welding More
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Published: 01 January 1993
Fig. 3 Different projection-welding configurations More
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Published: 01 January 1993
Fig. 4 Typical fast follow-up (low inertia) head for projection welding. (a) In open position. (b) In position for squeezing and heating the projection. (c) At instant of projection collapse and start of nugget formation More
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Published: 30 September 2015
Fig. 5 Projection welded PM 409L sensor boss. (a) Projection welded exhaust assembly. (b) Sensor boss with projection. (c) As-polished cross section of an unwelded projection. (d) Etched cross section of the fusion zone. Source: SSI Technologies, Inc. More