Posts Tagged ‘Oxyfuel gas welding’

A View on Oxyacetylene Welding

Friday, May 14th, 2010

The other name for the oxyacetylene welding is gas welding. The methodology which is applied over here to perform the task of weld is by mixing up of two gas elements. Mixing up of oxygen and acetylene in an equal proportion is required in this weld type.

Along with the mixture of these two gases the other elements which come into the contact are a welding torch which is hand-held or a gas blow pipe from which a sultry flame is generated where the temperature will be around 3,200 degree Celsius. To regulate the disproportionate outpouring of oxyacetylene flames you have to then change the proportion of two gases from oxygen to acetylene. To adjust the settings of the flame you can make use of neutral, oxidizing and carburizing settings.

If the mixing ratios of both gases are equal then the weld is generally carried on neutral flame setting. In the second kind of setting, the outpour of oxidizing flame is acquired by escalating the flow rate of oxygen. And in the last type of setting, carburizing flame is acquired by escalating the flow rate of acetylene. Oxyacetylene welding procedure is best suited to weld the steel, as the amount of heat produced here is high

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The Fundamental Process of Oxyfuel Gas Welding

Tuesday, January 12th, 2010

Oxyfuel gas welding (OFW) includes any welding process that uses combustion with oxygen as a heating medium

The process involves melting the base metal and generally a filler metal, using a flame produced at the tip of a welding torch.

The advantage of welding process is the control a welder can exercise over heat input and temperature, independent of the addition of filler metal. Weld bead size, shape, and weld puddle viscosity are also controlled in the welding process.

The fuel gases have one common property; they all require oxygen to support combustion. To suitable for welding operations and fuel gas when burned with oxygen, it contained the following:

- High  temperature flame
- High rate of flame propagation
- Adequate heat content
- Minimum chemical reaction of the flame with base and filler metals

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