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Gas Cutting & Heating

Gas Cutting & Heating

Gas cutting and heating are processes which mix a fuel gas and oxygen to create a high temperature flame, the most common fuel gases being propane and acetylene.

When cutting, the metal is pre-heated until it is made red hot, a trigger is then used to add an additional stream of oxygen which forces the oxidised metal to flow away from the cutting zone.

Heating the metal usually requires a wider, less intense flame; different nozzles are attached to create a wider cone for bending metal. For smaller areas like hard to remove nuts and bolts, welding nozzles are often used for a finer heating flame.

Cutting Gas Selector

Gas Preheat Time Cutting Speed Ease of Handling Oxygen Cost Fuel Gas Cost
Acetylene ■ ■ ■ ■ ■ ■
Propane ■ ■ ■ ■ ■ ■ ■ ■

Characteristics for cutting gas
■ ■ ■ = Best Choice    |    = Worst Choice

The industry standard gases used in combination are;

Oxygen and Acetylene   |   Oxygen and Propane