In this article I have discussed in some detail the subject of welding positions. The entire discussion has been done in reference to the Section IX of ASME Boiler and Pressure Vessel Code (BPVC). I have been a welding engineer for more than nine years. One question that has always troubled me about the welding … Read more
This article discusses different oxyfuel welding positions such as flat, horizontal, vertical, and overhead. At the end is a small discussion on oxy-fuel forehand welding and oxy-fuel backhand welding. OxyFuel Welding Flat Position OxyFuel flat position welding is performed from the top side of the joint. The face of the weld is horizontal in this position. … Read more
***Oxy-fuel welding in the vertical position requires a ***technique in order to keep the molten metal from running downward. In vertical position welding, the axis of the weld is approximately vertical. When welding is done on a vertical surface, the molten metal has a tendency to run downward and pile up. A weld that is not carefully … Read more
a. General. Overhead welding is performed from the underside of a joint. b. Bead welds. In overhead welding, the metal deposited tends to drop or sag on the plate, causing the bead to have a high crown. To overcome this difficulty, the molten puddle should be kept small, and enough filler metal should be added to obtain … Read more
Pipe welding positions are dictated by the job. Pipe welds are made under many different requirements and in different welding situations. In general, the position is fixed, but in some cases can be rolled for flat-position work. Positions and procedures for welding pipes are outlined below. Horizontal pipe rolled Weld(1) Align the joint and tack weld or … Read more
OxyFuel flat position welding is performed from the upper side of the joint. The face of the weld is approximately horizontal. Bead Welds. In order to make satisfactory bead welds on a plate surface, the flare motion, tip angle, and position of the welding flame above the molten puddle should be carefully maintained. The welding torch … Read more