Welding Cutting Pressures

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Welding Cutting Pressures. The ame temperature Propylene is used in production welding and cutting. Welding tips usually produce positive pressure higher than 1 pound per square inch PSI and are used at equal pressures of acetylene and oxygen.

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The equal pressure type is the most common and is used with fuel gas pressures that are above 1 psi. Oxygen and fuel gas regulators usually have two stages. It is high about 2000 C for hydrogen gas in air at atmo- cuts similarly to propane.

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When propylene is used the spheric pressure and up to 2800 C when pre-mixed torch rarely needs tip cleaning. If more than 100 ft 31 m of hose is required use 12 in. Shade 5 Fusion welding of steel cast iron nickel and copper. The tip of a welding or cutting torch is where the action is see Figure 1.