Talk:Spot welding

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Drawing of Spot Welding

Voltage?[edit]

The page should mention what voltage spot welding is generally done at. —BenFrantzDale 16:50, 1 February 2006 (UTC)[reply]

I don't believe the open circuit voltage would be in the range of 10 volts for ordinary welding equipment. The value seems too high. 64.9.237.232 (talk) 20:30, 2 June 2008 (UTC)[reply]

metallographic cross-section[edit]

lol I have added an image of an etched cross-section of a spot weld. I can take additional photographs if someone would suggest them. I'm a wiki-novice, so help me out if I have done something incorrect. Thanks--Mebg6522 20:47, 14 June 2007 (UTC)[reply]

Looks like the photo of the cross-section was removed. If anyone wants it back let me know via this discussion. Thanks-- Mebg6522 02:12, 22 July 2007 (UTC)[reply]

As far as giving a voltage it all depends on the material thickness coating everything factors in.

MrOllie's Edits[edit]

MrOllie appears intent on deleting commercial content that is informative and keeping hobbist content that is backward. The Poor Man's welder is an inferior welder described in an early patent. I would like others to weigh in on his revisions.] —Preceding unsigned comment added by Glrx (talk • contribs) 00:44, 13 November 2008 (UTC)[reply]

Historical cite found in 1916 Popular Science magazine[edit]

I don't have time for this right now, but I have just discovered that Google Books has scanned virtually every Popular Science magazine ever produced, and these are available for free to anyone to read and peruse. I just now stumbled across what is probably the first ever article about a spot welding machine, though they don't call it that since it was brand new and the name was not formalized yet. This should be worked into this article somehow.

Popular Science, Riveting Without Rivets, April 1916, p509 http://books.google.com/books?id=hCYDAAAAMBAJ&pg=PA509

DMahalko (talk) 11:59, 5 February 2009 (UTC)[reply]

Resistance welding appears to be invented by Elihu Thomson.

Apparatus for Electric Welding, 29 March 1886 {{citation}}: Unknown parameter |country-code= ignored (help); Unknown parameter |inventor-first= ignored (help); Unknown parameter |inventor-last= ignored (help); Unknown parameter |inventorlink= ignored (help); Unknown parameter |issue-date= ignored (help); Unknown parameter |patent-number= ignored (help)
Method of Electric Welding, 14 June 1890 {{citation}}: Unknown parameter |country-code= ignored (help); Unknown parameter |inventor-first= ignored (help); Unknown parameter |inventor-last= ignored (help); Unknown parameter |inventorlink= ignored (help); Unknown parameter |issue-date= ignored (help); Unknown parameter |patent-number= ignored (help)

Thomson proposed transformers, batteries, and dynamos for the high current source in the first patent.

Glrx (talk) 23:10, 4 September 2012 (UTC)[reply]

Clarification in Electrical Notes[edit]

The article refers to an energy storage unit, eg a capacitor bank. This would imply DC rather than AC, and would also imply a very high current rectifier. Could somebody knowledgeable clarify the issue of energy storage units please? Also it's probably worth clarifying the AC/DC issue - even if it should be obvious. Mimiselfani (talk) 10:06, 9 January 2010 (UTC)[reply]

Spot welding (unlike MIG welding) isn't fussy about AC vs. DC; so both are used interchangeably, depending on which is the most convenient for an electrical engineer to construct. In practice, large machines are AC, small machines are DC. Both use "energy storage units": obviously the DC units use capacitors, but the AC units also store energy through the inductance of their transformers. Andy Dingley (talk) 11:42, 9 January 2010 (UTC)[reply]

External links modified[edit]

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Nothing about health ?[edit]

...about heavy metals inhalation, or see for example : Akbar Sharifian, Marjan Gharavi, Parvin Pasalar & Omid Aminian (2009) Effect of extremely low frequency magnetic field on antioxidant activity in plasma and red blood cells in spot welders. Jan;82(2):259-66. doi: 10.1007/s00420-008-0332-2. Epub 2008 May 27. Int Arch Occup Environ Health ; URL (NIH) = https://pubmed.ncbi.nlm.nih.gov/18504600/. | PMID: 18504600 | DOI: 10.1007/s00420-008-0332-2
; Sorry my langage is French, and I prefer let a good English wikipedian write a section about those questions --Lamiot (talk) 13:45, 13 October 2020 (UTC)[reply]