Oxygen cutting

Oxygen cutting occurs with oxygen, but before this the cutting surface is preheated to a temperature of 1000 - 1300⁰ C, so that when oxygen comes into contact with the metal, ignition and subsequent cutting of the metal occurs. oxygen cutting It is very important that the heating flame is always in front of the oxygen stream, then the cutting process will be continuous.

Due to the different properties of metals, not all of them lend themselves well to oxygen cutting, Low-carbon steels are cut best, medium-carbon steels are less effective, and high-carbon steels are even worse. Industrial oxygen (98.8–99.7%) is used for cutting. If the oxygen content is lower, the cut surface will not be clean and the slag will be very hard.

Oxygen cutting of metal This is used for metals that would not melt when heated, otherwise cutting would be impossible. Metal oxides should not have a melting point higher than the combustion temperature of the metal, otherwise cutting would require fluxes. The heat released during combustion of the metal must be high; this facilitates a good cutting process. The thermal conductivity of the metal must not be too high, otherwise the cutting process will be interrupted. The ignition temperature is also affected by the type of metal surface, the size of the pieces, and the speed and pressure of the oxygen supply. Combustible gas during oxygen cutting of metal Acetylene substitutes are widely used. They come in liquefied, compressed, refrigerated, dissolved, mixed, or simple forms.

There are several varieties oxygen cutting of metal:

• high quality oxygen cutting;
• high-speed;
• Burr-free and high-pressure oxygen cutting.

Each of these methods increases the cutting speed by an average of two times.