Where is the auxiliary gas of the flame cutting machine applied?

Where is the auxiliary gas of the flame cutting machine applied?

The auxiliary gas of the CNC flame cutting machine is mainly used in:

1, oxygen gas (gas used to generate oxygen in the gas path)

2, auxiliary gas (that is, the gas ejected from the cutter cutting nozzle)

3, compressed air (usually used to protect the light path, some manufacturers will also be used to protect the gas)

CNC flame cutting machine

Different auxiliary gases are used to cut different materials. The thickness of the cutting material is different, so the pressure of its auxiliary gas is different from the required flow rate.

The oxygen used for cutting carbon steel has a purity requirement of generally 99.5% or higher. The main function is to help burn and blow off the cut melt. The pressure and flow rate of each CNC flame cutting machine manufacturers are different, which is inseparable from the size of the cutting nozzle and the thickness of the cutting material. Generally, the pressure is 0.3-0.8Mpa, and the cutting part is generally 0.02-0.05Mpa. The flow is not good, such as cutting 22mm carbon steel, some manufacturers have a flow rate of 10M3 / h (including the protection of oxygen for double-layer cutting nozzle)

Nitrogen is used to cut stainless steel. The main role is to eliminate the oxidation reaction and blow off the melt. There is a high requirement for the purity of nitrogen (especially stainless steel of 8mm or more, which generally requires 99.999% purity). The pressure requirements are relatively large, generally requiring more than 1Mpa. If you want to cut stainless steel of 12mm or more, or thicker to 25mm, pressure is required. Higher, 2Mpa or higher. The flow rate varies according to the type of the cutting nozzle, but it is very large. For example, some manufacturers need to cut 150mm stainless steel to 150m3/h and cut 3mm, as long as the flow rate is below 50m3/h.

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