TIG Welding Questions And Answers Already Graded A+

the arrangement of direct current in which the work piece is the positive pole in the welding arc - ️️Direct current electrode negative the portion of base metal whose mechanical properties or micro structure have been altered by the heat of welding, brazing, soldering or thermal cutting - ️️heat affected zone (HAZ) a lap joint, t joint or corner joint - ️️fillet weld a device for controlling the delivery of gas at some substantially constant pressure regardless of variation in higher pressure at the source - ️️Regulator a groove melted into the base metal adjacent to the weld toe root and left unfilled by the weld metal - ️️undercut The distance the weld metal extends from the weld face into a joint, exclusive of weld reinforcement - ️️joint penetration a joint between 2 members aligned approximately in the same plane - ️️butt joint protective gas used to prevent or reduce atmospheric contamination - ️️shielding gas A weld made to hold the parts of a weldment in proper alignment until the final welds are made - ️️tack weld The minimum distance from the fillet weld face, minus any convexity, and the weld root - ️️effective throat the distance from the joint root to the toe of the fillet weld - ️️leg of a fillet weld filler metal that has been added during brazing, soldering, or welding - ️️deposited metal a separation at the joint root between the workpieces - ️️root opening a weld bead formed with out appreciable weaving - ️️stringer beada depression in the weld face at the termination of weld bead - ️️crater the protrusion of weld metal beyond the weld toe or weld root - ️️over lap any welding process that uses fusion of a base metal to make the weld - ️️fusion welding weld reinforcement on the side of the joint from which welding was done - ️️face reinforcement that portion of the groove face within the joint root - ️️root face a gas that normally does not combine chemically with materials - ️️inert gas