Plasma arc cutting system based on oxygen-enriched process

Abstract

The invention provides a plasma arc cutting system based on an oxygen-enriched process. The cutting torch head communicates with the mixed gas outlet of the gas distribution box. The first gas source box and the second gas source box are respectively separated from the first gas The gas inlet communicates with the second gas inlet. The air and oxygen are uniformly mixed by the premixing component of the gas distribution box and then supplied 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 ion flow. The flow rate of the iron plate increases, so that the iron plate is exposed to more oxygen per unit time. 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. The efficiency is higher, and at the same time, due to the faster airflow, the molten metal is blown away more thoroughly, making the cutting surface smoother and improving the overall cutting quality.

Description

technical field [0001] The invention relates to the field of plasma arc welding and cutting, in particular to a 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 this time, the air...

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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 airflow in the cutting torch head needs to be more gentle, the flow rate is reduced, and the cutting efficiency is very slow. At the same time, it may not be able to completely blow away the molten metal on the surface of the workpiece, resulting in Fluid remains at the cutting edge, which reduces the cutting quality and cannot meet the needs of high-quality cutting

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