tack-weld

[tak-weld]

verb (used with object)

to join (pieces of metal) with a number of small welds spaced some distance apart.

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British Dictionary definitions for tack welding

tack welding

noun

engineering short intermittent welds made to hold components in place before full welding is begun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012