High-efficiency heat-dissipating plasma arc cutting system based on oxygen-enriched process

Abstract

The invention provides an efficient heat dissipation plasma arc cutting system based on an oxygen-enriched process. Mix air and oxygen through the gas distribution box and supply gas to the cutting torch head. At this time, the oxygen content in the gas source of the cutting torch head is increased, and the diameter of the nozzle is limited to increase the flow rate of the ion gas flow, so that in the unit Within a short period of time, the iron plate is exposed to more oxygen. At this time, the combustion-supporting effect of oxygen will be stronger, and the cutting effect on the iron plate will be improved more obviously. At this time, the temperature of the cutting torch head rises sharply. The torch head is cooled by water, and the area of ​​the air inlet is increased to reduce the blocking rate of the negative pressure generated when the fan rotates, increase the air intake, and then improve the cooling effect of the air-cooled water tank, so that the air-cooled water tank can meet the requirements of the oxygen-enriched process Cooling requirements for plasma arc cutting systems.

Description

technical field [0001] The invention relates to the field of plasma arc cutting, in particular to an efficient heat dissipation plasma arc cutting system based on an oxygen-enriched process. Background technique [0002] The cutting torch is an important tool for gas welding. When working, the cutting torch generates a plasma arc and shoots at the surface of the workpiece. The particles inside the plasma arc have a huge impact on the surface of the workpiece, releasing a large amount of energy to partially melt and vaporize the workpiece material, thereby forming a cut. , to implement the cutting function. [0003] The cutting system in the prior art directly supplies air to the cutting torch head through compressed air, and uses compressed air as the gas source of the cutting torch head to cut the surface of the workpiece. Due to the low oxygen content in the compressed air, compressed air is used as the gas source The oxygen content in the cutting torch head is low. At th...

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Problems solved by technology

[0003] The cutting system in the prior art directly supplies air to the cutting torch head through compressed air, and uses compressed air as the gas source of the cutting torch head to cut the surface of the workpiece. Due to the low oxygen content in the compressed air, compressed air is used as the gas source The oxygen content in the cutting torch head is low. At this time, the air flow in the cutting torch head needs to be more gentle, the flow speed is reduced, and the cutting efficiency is very slow. Due to insufficient wind speed, the molten metal on the cutting surface may not be completely blown away, resulting in The cutting surface is not smooth, if the compressed air is mixed with oxygen, although the cutting efficiency will be improved, but it will cause the temperature of the torch head to rise sharply, resulting in damage to the entire cutting system

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