By doing so, weld current and force is focused into the small area of the projection, and heat is obtained from the resistance to the flow of the welding current. Due to this heat, the projections collapse and the parts are weld together. Another successful welding technique is capacitor discharge stud welding, which uses weld studs or specially formed bolts for welding instead of projections.
Definition of inert. 1  1 : lacking the power to move. 2  2 : very slow to move or act : sluggish. 3  3 : deficient in active properties; especially : lacking a usual or anticipated chemical or biological action.
conspicuously - in a manner tending to attract attention; there have been plenty of general declarations about willingness to meet and talk, but conspicuously no mention of time and place. inconspicuously - in a manner intended to avoid attracting attention; he had entered the room inconspicuously.