tack weld

present singular third person tack welds · participle present tack welding · participle past tack welded · past tack welded · alternative tack-weld

1. intransitivetransitiveTo position and secure pieces of work using small welded joints at isolated points (typically, in preparation for the final weld).

   Three rolled sheets are clamped together and to a form and are then tack welded into place.

   1923 June, “Fabricating Storage Tanks by Oxy-Acetylene Welding”, in Acetylene Journal

plural tack welds · alternative tack-weld

1. A small, isolated weld used to position and secure pieces of work (typically, in preparation for the final weld).

   A large number of very small tack welds should be used on thin metal sections, while a few larger tack welds may be used for thicker metal parts.

   2011, Larry Jeffus, “Fabricating Techniques and Practices”, in Welding: Principles and Applications