simple past tense and past participle of weld

A form of friction welding in which the energy comes from a rotating flywheel.

present participle of spot weld

The resistance-welding of overlapping pieces of metal by applying pressure and an electric current at small points

(metallurgy) The process of welding two pieces of metal together using the heat generated by an electric arc between two electrodes.

A welder (machine for welding).

A phenomenon where in a vacuum, two clean oxide-less uncoated metal surfaces will fuse/weld/merge together when they come into contact with each other, without any other action required (without fusion heating).

present participle of cold weld

plural of welding machine

A method of manual electric welding that uses a consumable flux-covered electrode that forms a slag to protect the weld from oxygen degradation.