Magnetic deflection blow elimination device for argon arc welding machine

Abstract

The invention discloses a magnetic blow eliminating device for an argon arc welding machine. The magnetic blow eliminating device comprises a reflecting electrode plate, wherein the reflecting electrode plate is a magnetically conductive iron material; a groove of an elongated structure is formed in the position, right below a welding gun, on the reflecting electrode plate along the traveling direction of the welding gun; a copper bar is mounted in the groove; a forming groove which is distributed along the traveling direction of the welding gun is formed in the position, right below the welding gun, on the upper surface of the copper bar. An existing full-copper reflecting electrode plate is improved into a combination structure of the iron material and a copper material, so that the iron material part can form a magnetic field below an electric arc, and the magnetic field can pull down the electric arc to keep the electric arc stiffer, so that the magnetic blow affect of the electric arc is avoided, and the welding efficiency cannot be affected; meanwhile, the smooth transition of weld penetration can be guaranteed by virtue of the copper bar, the welding quality is guaranteed, and the device is simple in structure, low in cost and applicable to welding machines.

Description

technical field [0001] The invention relates to the field of welding, in particular to a magnetic deflection blow elimination device for argon arc welding machines. Background technique [0002] At present, when the argon arc welding machine is actually used, the phenomenon of magnetic deflection blowing often occurs, which leads to the instability of the arc, the failure of the weld to form, and finally the welding failure. Specifically, since the clamp devices 6 on both sides of the argon arc welding machine and the welding materials are all magnetically conductive iron materials, and these materials are used in metal smelting, metal heat treatment, metal processing and replacement (such as: lathe cutting, grinding machine grinding) , Installation, lifting (electromagnetic lifting), assembly (such as: cutting, grinding) process will inevitably be magnetized to produce residual magnetism; and because the argon arc welding power supply usually uses a pulsed DC power supply (...

AI Technical Summary

Problems solved by technology

In this way, the strengthened magnetic field will in turn generate force in the left and right or front and back directions of the arc, and since the reflective electrode plate under the arc is made of all copper material, it has no residual magnetism, so the strengthened magnetic field will make the arc move left and right or forward and backward. Pendulum, that is, the phenomenon of magnetic deflection blowing, which causes the arc to be unstable, and the weld cannot be formed, resulting in welding failure

[0003] Conventional degaussing methods are roughly divided into three types: one is vibration degaussing method: using high-frequency vibration to degauss magnetic parts, but this method is not feasible for welding equipment; the other is heat treatment degaussing method: heating magnetic parts to The temperature is above 770℃, but it takes a long time to use this method, and the temperature is difficult to control, uneconomical, and not suitable for use on professional welding equipment; the third is the reverse degaussing method: first find the magnetic parts of the equipment Magnetic pole (N or S), and then give a reverse magnetic field for this magnetic pole to demagnetize. This method takes a long time, and in the process of degaussing, professional equipment is needed to detect the size of the magnetic field, so as to avoid excessive degaussing and reverse magnetic field. higher cost

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