Audel Welding Pocket Reference by James E. Brumbaugh

By James E. Brumbaugh

That includes up to date charts facing the most typical occasions welding staff face at the task , this entire, pocket-sized reference is predicated on options from operating execs and covers welding symbols and definitions, forms of joints and welds, usual welding station configurations, oxygen cylinders, arc-welding charts, U.S metric measures, and extra.

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Welding rods are available in a variety of sizes and compositions (see Table 2-4). The sizes range in diameter from 1/16 inch to 3/8 inch. Cast-iron rods are sold in 24-inch lengths, and all others are available in 36-inch lengths. Table 2-4 Gas Welding Filler Rods Type RG45 Comments r Copper-coated low-carbon steel rod for gas welding. 2 Class RG45. r Use a neutral flame to avoid excess oxidation or carbon pickup. r Commonly used to weld ordinary low-carbon steel up to 1/4 thick. r Recommended where ductility and machinability are most important.

A defective regulator may allow the gas to blow through with enough force to break the gauge glass, resulting in possible injury to anyone standing nearby. Always stand to one side of the regulator when opening the cylinder valve, and turn the valve slowly. 10. Open the oxygen regulator adjusting screw (the T- handle on the regulator), blow out any dirt or debris in the oxygen hose, and then close the screw. 11. Repeat Steps 9 and 10 for the acetylene regulator and hose. 32 2. Oxyacetylene Welding 12.

No chances should be taken with a leaking acetylene gas cylinder. CAUTION Never exceed a 15-psi regulator gauge reading when reducing the acetylene to a working pressure. The discharge rate of 22 2. Oxyacetylene Welding an acetylene cylinder should not be excessive. An excessive rate of discharge results in the drawing off of acetone, which causes strong weakening effects on the weld. , a discharge rate of 50 cubic feet per hour for a cylinder with a 275-cubic-foot capacity). Hoses and Hose Connections The hoses used in oxyacetylene and other gas welding processes should be strong, nonporous, flexible, and not subject to kinking.

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