kaarkeevituse protsess/operatsioon, mille korral kasutatakse ühte või mitut keevitustraati või -linti ja kus keevituskaar põleb pulberräbusti kihi all, an arc welding process that produces coalescence of metals by heating them with an arc or arcs between a bare metal electrode or electrodes and the workpieces; the arc and molten metal are shielded by a blanket of granular, fusible material on workpieces; filler metal is obtained from the electrode and sometimes from supplemental source