Oxygen And Acetylene Regulators

The gases stored in the gas cylinders used for oxy-acetylene welding are originally at very high pressure, and cannot be directly used as such. Here, the oxygen and acetylene regulators play an important role in reducing this pressure to a working pressure. These regulators enable maintaining a constant desired pressure at the point of delivery, … Read more

Stationary Oxyacetylene Welding Equipment

Stationary oxyacetylene welding equipment is installed where welding operations are conducted in a fixed location. Oxygen and acetylene are provided in the welding area as outlined below. Oxygen. Oxygen is obtained from a number of cylinders manifolded and equipped with a master regulator. The regulator and manifold control the pressure and the flow together (fig. 5-1). The oxygen is … Read more

OxyFuel Welding Sheet Metal

 Welding Sheet Metal. (1) For welding purposes, the term “sheet metal” is restricted to thicknesses of metals up to and including 1/8 in. (3.2 mm). (2) Welds in sheet metal up to 1/16 in. (1.6 mm) thick can be made satisfactorily by flanging the edges at the joint. The flanges must be at least equal … Read more

Oxyfuel Welding Fluxes

OxyFuel Welding fluxes are used to protect the metal in the joint area from this oxidation and thus let the molten filler metal flow onto clean metal surfaces. Oxyfuel welding fluxes are available as powder, paste, or rod coating. Flux powder is sprinkled over the slightly preheated joint area. The filler rod is similarly preheated and dipped … Read more

OxyFuel Welding Steel

The term “steel” may be applied to many ferrous metals which differ greatly in both chemical and physical properties. In general, they may be divided into plain carbon and alloy groups. By following the proper procedures, most steels can be successfully welded. However, parts fabricated by welding generally contain less than 0.30 percent carbon. Heat … Read more

Fuel Gas Cylinders

Although the most familiar fuel gas used for cutting and welding is acetylene, propane, natural gas, and propylene are also used. Store these fuel gas cylinders in a specified, well-ventilated area or outdoors, and in a vertical condition. Any cylinders should have their caps on, and fuel gas cylinders, either filled or empty, should have … Read more

Oxyacetylene Regulators Malfunctions and Corrections

The leakage of gas between the regulator seat and the nozzle is the principal problem encountered with oxyacetylene regulators. It is indicated by a gradual increase in pressure on the working pressure gauge when the adjusting screw is fully released or is in position after adjustment. This defect, called “creeping regulator”, is caused by bad … Read more

Welding Oxyfuel Working Pressure

The required working pressure increases as the tip orifice increases. The relation between the tip number and the diameter of the orifice may vary with different manufacturers. However, the smaller number always indicates the smaller diameter. For the approximate relation between the tip number and the required oxygen and acetylene pressures, see tables 11-1 and 11-2. See Also: … Read more

Oxyfuel Welding Rods

The oxyfuel welding rod, which is melted into the welded joint, plays an important part in the quality of the finished weld. Good oxyfuel welding rods are designed to permit free-flowing metal which will unite readily with the base metal to produce sound, clean welds of the correct composition. Oxyfuel Welding rods are made for various types … Read more

OxyFuel Welding Forehand

In the OxyFuel Welding forehand method, the welding rod precedes the torch. The torch is held at approximately a 45-degree angle from the vertical in the direction of welding, as shown in figure 11-4. The flame is pointed in the direction of welding and directed between the rod and the molten puddle. This position permits uniform preheating of … Read more