Crucigrama Welding TermsVersión en línea Crossword puzzle of welding terms. por Lee-Ann Williams 1 Flammable gas combined with oxygen, used for torch welding. 2 Used to isolate the weld from the air. 3 Additional metal used to join pieces of base metal. 4 The pieces being welded. 5 Filler metal (welding rod or wire) used during arc welding. 6 The seam of melted metal formed along the weld. 7 Creates a gas that shields the weld from elements in the air that can prevent a smooth weld. 8 An electrical connection that generates heat to form the weld. 5 7 3 2 8 1 6 4