Nifex LTD, Hungary, Vac, Laser, Plasma, Flame, Cut, Metal

The technology of flame cutting, it?s principle and working

Flame cutting is belonging to the family of thermical cuts.

According to it’s nature, it is a burning cut.

This means the material in the cutting gap burns in it’s full thickness, and a high speed oxygen ray blows out the burnt gas. The principle of flame cutting is heating the oxygen-combustible gas mixture to ignition temperature, and we burn it and spurt it from the cutting gap.

The flame only heats the surface, deeper inside the material it will be heated by the metal’s combustion heat.

Criterions of flame cutting:

• The metal must be burnable
• The metal’s flashpoint must be under it’s melting point
• The metal’s oxide’s melting point must be lower than the metal’s melting point.
• The metal’s combustion heat must be high, but not it’s thermal conductivity

In use, in case of unalloyed structured steels with thicker cross-section this means that this is a perfect and still being used technology nowadays.