Method and device for processing surface of flux-cored welding wire during drawing flux-cored welding wire

Abstract

The invention relates to a method and a device for processing the surface of a flux-cored welding wire during drawing the flux-cored welding wire. The method comprises the steps of cleaning the surface of the flux-cored welding wire and coating the surface of the flux-cored welding wire on line when the flux-cored welding wire is drawn to be shaped at high speed. The device comprises a cleaning device and a coating device, through which the flux-cored welding wire can penetrate consecutively in sequence. A spiral hair brush which can surround the circumferential surface of the flux-cored welding wire is embedded in the cleaning device. A pressing coating module is fixedly arranged on the flux-cored welding wire outlet end of the coating device, wherein the diameter of the inner hole of the pressing coating module is the same as the diameter of the flux-cored welding wire. The method and the device can be used for conveniently and rapidly processing the surface of the flux-cored welding wire, which has the degree of finish Ra of 2.5 Mum or less, and can ensure that the arc stability of the flux-cored welding wire whose surface is processed is improved in the welding process, the spattering is reduced obviously, and the flux-cored welding wire can be more smoothly fed.

Description

technical field [0001] The invention relates to a surface treatment method and device in the drawing and manufacturing of flux-cored welding wire. Background technique [0002] In the production of flux-cored welding wire, in order to smoothly draw and reduce the diameter to the required size, improve the service life of the wire drawing die, and continuously produce smoothly, it is necessary to use wire drawing powder to lubricate the welding wire to ensure the surface quality of the welding wire and realize continuous drawing. However, it is usually difficult to remove the wire drawing powder on the surface of the welding wire after wire drawing. If it is not cleaned, it will affect the appearance quality of the welding wire surface. Operational defects such as serious nozzle wear prevent the advantages of high efficiency of the flux-cored wire from being fully utilized. Therefore, the surface of the drawn flux-cored wire needs to be treated to remove the residue on the s...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the surface treatment of flux-cored welding wire is mainly cleaning and coating, but this is a weak link in most domestic flux-cored welding wire manufacturers, which directly or indirectly affects the quality of flux-cored welding wire to a large extent

In the traditional process of cleaning the surface of the flux-cored welding wire, the surface of the flux-cored welding wire is mostly manually wiped with a cloth. Therefore, frequent replacement of the working cloth is required, which consumes manpower, and it is difficult to ensure that the residue on the surface of the welding wire can be cleaned, etc. question

In the traditional coating process, a layer of lubricating oil with adhesion is first applied on the surface of the welding wire by chemical methods, and then the lubricating oil is used to absorb the adhesive additive, so that the additive can remain on the surface of the welding wire in the form of inorganic substances. In order to achieve the effect of surface treatment, the whole process is more complicated

In addition, the traditional coating process often has problems such as uneven coating, which causes rust on the surface of the flux-cored wire and excessive oiling.

In addition, when the finish of the flux-cored wire is high (ie Ra≤2.5μm), it is also difficult for the traditional coating process to press the coating material into the tiny pits on the wire surface

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