Efficient heat dissipation type plasma arc cutting system based on oxygen enrichment process

Abstract

The invention provides an efficient heat dissipation type plasma arc cutting system based on an oxygen enrichment process. Air and oxygen are mixed through a gas distribution box and then supplied toa cutting torch head, at the moment, the content of oxygen in a gas source of the cutting torch head is increased, the diameter of a nozzle is limited, thus the flow speed of ion gas flow is increased, and within unit time, oxygen in contact with an iron plate is increased, and at the moment, the combustion-supporting effect of the oxygen is stronger; when the cutting effect on the iron plate is improved more obviously, the temperature of the cutting torch head rises sharply, water cooling is conducted on the cutting torch head through cooling water in an air cooling water tank, the area of anair inlet is increased, the blocking rate of negative pressure generated when a fan rotates is decreased, the air inlet amount is increased, and then the cooling effect of the air cooling water tankis improved; and therefore, the air cooling water tank can meet the requirement of the plasma arc cutting system based on the oxygen enrichment process for cooling.

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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