Rust removal device and method

Abstract

The invention discloses a rust removal device and method. The rust removal method comprises the steps that after intermediate frequency rectification of an incoming intermediate-frequency low-voltagealternating current signal is carried out through an intermediate frequency rectification circuit, a direct current signal is output to a nozzle and an electrode through a positive electrode output end and a negative electrode output end, an arc starting circuit outputs a target frequency signal and the target frequency signal is coupled to the negative electrode output end to enable an electrodeto discharge, and a gas igniting arc between the electrode and the nozzle is broken down; and the arc is ejected from a narrow hole channel of the nozzle by compressed gas, the compressed arc energy is more concentrated, and the gas in an arc column is fully ionized to form a high-temperature plasma arc. The high-temperature and high-speed plasma arc acts on a rusty workpiece, and after rust markson the surface of the rusty workpiece are heated by the plasma arc and subjected to the high-speed impact of a plasma, the rust marks instantly expand, deform, break and finally fall off the surfaceof the workpiece to achieve the effect of rust removal. According to the rust removal device and method, rust marks on various shapes of workpieces can be efficiently cleaned, large amount of dust produced by mechanical friction is avoided, low noise and environmental protection are achieved, no special rust removal site is required, and the practicality is high.

Description

technical field [0001] The invention belongs to the technical field of rust removal, and in particular relates to a rust removal device and method. Background technique [0002] In industrial production, before cutting, welding, painting or electroplating, etc., the oxide layer on the surface of the metal sheet needs to be removed, that is, rust. At present, there are three traditional derusting methods. The first is manual derusting, which involves rubbing a hammer, spatula, scraper or wire brush on the surface of the metal plate to remove rust; the second is mechanical derusting. Mechanical rust removal by gear rotary deruster, shot blasting derusting machine, shot blasting derusting machine or high-pressure water abrasive derusting machine. Whether it is manual rust removal or mechanical rust removal, their working principle is to use certain substances to rub the oxide layer on the surface of the metal plate to achieve the purpose of rust removal. The third method is t...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a rust removal device and method, aiming to solve the problem that the traditional manual rust removal and mechanical rust removal technical solutions cannot completely remove rust, and the processing of small workpieces and workpieces with complex shapes It is more difficult and prone to the problem of large dust

Images