A rust removal device and method

Abstract

A rust removal device and method. After the medium-frequency rectifier circuit rectifies the input medium-frequency low-voltage alternating current signal, direct current signals are output to the nozzle and the electrode through the positive output terminal and the negative output terminal respectively. The arc ignition circuit outputs a target frequency signal and couples it to the negative output terminal to cause the electrode to discharge and break down the gas between the electrode and the nozzle to ignite the arc. The compressed gas sprays the arc out of the narrow orifice of the nozzle. After compression, the energy of the arc is more concentrated, and the gas in the arc column is fully ionized to form a high-temperature plasma arc. The high-temperature and high-speed plasma arc acts on the rusty workpiece. After the rust on its surface is heated by the plasma arc and impacted by the high speed of the plasma, it instantaneously expands, deforms, breaks and finally peels off the surface of the workpiece, achieving the rust removal effect. This rust removal device and method can efficiently, quickly and thoroughly clean the rust on workpieces of various shapes, avoid the generation of a large amount of dust caused by mechanical friction, have low noise and environmental protection, do not require a special rust removal site, and have strong practicability.

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