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(Redirected from Oxyacetylene)"Oxyacetylene" redirects here. "Oxyacetylene" is also the title of a song performed by Cubanate.

Oxy-fuel welding of metal is commonly called oxyacetylene welding since acetylene is the predominant choice for a fuel, or often simply gas welding. In gas welding and cutting, the heat needed to melt the metal comes from a fuel gas burning with oxygen in a torch.

Oxy-fuel cutting of metal is a similar process, using a different type of gas torch, called a blowtorch. (But, colloquially, many people also call a welding torch a blowtorch. Learn useful information on buying high pressure equipment and machinery: Save. ) Here the metal is heated until it glows, and then a long lever on the torch is pressed to blow an excess of oxygen into the gas mixture, to blow and melt the metal with the resulting extra heat, much of which comes from the metal burning rather than from the gas burning. Sometimes a metal-cutting blowtorch is colloquially called a gas-axe or hot wrench.

Torches that do not mix pure oxygen with the fuel inside the torch, but burn it with atmospheric air, are not oxy-fuel torches and can be identified by their single tank. (Oxy-fuel welding needs two tanks, fuel and oxygen. ) Most metals cannot be melted with such single-tank torches, so they can only be used for soldering and brazing, not welding. See also Blowlamp. Looking for more: air india plasma, air plasma, brush, 4.

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