A relatively broad protective device which keeps away unwanted liquid or vapor … Dictionary of automotive termsĪtomic arc welding - Welding using heat created by hydrogen atoms, created by an electric arc recombining to form hydrogen molecules. It enables a person to look directly at the electric arc through a special lens without being harmed. Shield - An eye and face protector held in the hand when welding. Welding traditionally involved … Universalium Discovered in the 1st millennium AD during attempts to manipulate iron into useful shapes, the technique produced a strong, tough blade. Welding - Technique for joining metallic parts, usually through the application of heat. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle ) that cools to… … Wikipedia Welding - is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence.
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