tack weld meaning

[Architecture]
1.

A weld used for holding metal parts in position temporarily.

2.

One of a series of welds applied where a continuous weld is unnecessary.

taenia

Examples

1. minimum of three tack welds
2. gmaw short-arc tack welds shall not be incorporated into the root pass
3. When joining two parts together with a seal weld, it may be necessary to first hold them together, by making tack welds.
4. It is very important that the weld purging process should start for the tack welds, so the undersides of those tacks remain clean and shiny, without any oxidation or discolouration.