Welding questions and answers graded A

Welding questions and answers graded A welding ✔✔the coalescent bond between 2 pieces of metal resulting in the weld being equal to or stronger than the base metal SMAW ✔✔shielded metal arc welding is a manual arc w ...

Welding questions and answers graded A welding ✔✔the coalescent bond between 2 pieces of metal resulting in the weld being equal to or stronger than the base metal SMAW ✔✔shielded metal arc welding is a manual arc welding process that uses consumable electrode coated in flux to lay the weld. Stick welding GMAW ✔✔gas metal arc welding a semi-automatic or automatic arc welding process in which a continuous and consumable wire electrode and a shielding gas are fed through a welding gun Mig welding FCAW ✔✔flux cored arc welding is a semi-automatic or automatic arc welding process. FCAW requires a continuously-fed consumable tubular electrode containing a flux Flux core GTAW ✔✔gas tungsten arc welding an arc welding process that uses a non continuous tungsten electrode to produce the weld Tig welding OAW ✔✔oxyacetylene welding processes that use fuel gases and oxygen to weld Oxy-Fuel, Oxyacetylene Oxy welding oxyacetylene cutting ✔✔a group of cutting processes used to sever metals by means of the chemical reaction of oxygen with the base metal at elevated temps. base metal ✔✔the material that is to be joined when welding weld metal ✔✔the metal that is deposited by the welding process weld bead ✔✔a weld resulting from a pass passes ✔✔a single progression of welding along a joint. The result of a pass is a weld bead or layer HAZ ✔✔heat-affected zone That portion of the base metal that has not been directly affected by a weld but whose mechanical properties and/or micro-structure have been altered by the heat of welding or cutting. electrode ✔✔protected by the flux when burned off it acts as a shield shields the weld from the atmosphere has current carrying capabilities digits 2-3 ✔✔tensile strength ##1 ✔✔all position ##2 ✔✔flat and horizontal ##3 ✔✔flat only last digit ✔✔the type of flux and which welding polarities to use DC: ROD+ ✔✔cellulose sodium AC or DC+ or DC- ✔✔cellulose potassium AC or DC- ✔✔Titania sodium AC or DC- or DC+ ✔✔iron powder titania DC: ROD+ ✔✔low hydrogen sodium AC or DC+ ✔✔low hydrogen potassium AC or DC+ or DC- ✔✔iron powder iron oxide AC or DC+ ✔✔iron powder low hydrogen 6010/6011 ✔✔used for pipe welding: they excel with dirty or rusty material. deep penetration 6013 ✔✔good bead appearance. best used for decorative iron. shallow penetration 7018/7016 ✔✔low hydrogen rod. used for x-ray quality welds. used in high quality welds. medium penetration 7024 ✔✔used for high deposit rates. multiple pass welds. shallow to medium penetration fillet weld ✔✔a weld joint that meets at a 90 degree angle groove weld ✔✔2 pieces of metal that are butted up against each other 1F ✔✔weld is in the flat position 2F ✔✔weld is in the horizontal welding position 3F ✔✔weld is in the vertical position 4F ✔✔weld is in the overhead position 1G ✔✔weld is in the flat position groove weld in the flat position 2G ✔✔weld is made in the horizontal position 3G ✔✔weld is made in the vertical position 4G ✔✔weld is made in the overhead position 2G pipe ✔✔pipe is kept fixed in the vertical position 1G pipe ✔✔pipe is welded in the flat position 5G pipe ✔✔pipe is fixed in the horizontal axis 6G pipe ✔✔pipe is fixed at a 45 degree angle DCEP ✔✔direct current electrode positive DCRP ✔✔direct current reverse polarity DC+ ✔✔this set-up the Electrode is positive and the ground clamp is negative DCEN ✔✔direct current electrode negative DCSP ✔✔direct current straight polarity DC- ✔✔the electrode is negative and the ground clamp is positive AC ✔✔alternate current the electrode holder is constantly switching from positive to negative DC ✔✔direct current is the type of electricity that your car batter has flows from one direction to the other just like water in one direction