Copper-free solid welding wire and preparation method thereof

Abstract

The invention provides a copper-free solid welding wire and a preparation method thereof. The preparation method comprises the following steps: after the wire is shelled and polished, and then drawn to a specified wire diameter according to a conventional method, a solid welding wire is obtained; for the solid welding wire Washing, ultrasonication, preliminary drying, soaking, and then drying on the surface of the surface can be done in layers; when soaking, the particle size of titanium dioxide in the soaking solution is 1-10 μm, and the particle size of cerium oxide is 20-50 nm; Adding micron-sized titanium dioxide particles and nano-sized cerium oxide particles into the immersion solution can transition to the molten pool and disperse in the weld deposit metal to better promote the refinement and spheroidization of inclusions, so that the inclusions can be replaced Uniform distribution, inhibit proeutectoid ferrite and promote the formation of acicular ferrite, refine the grain, thereby increasing the strength of the weld and improving the toughness of the structure, while improving the mechanical properties of the weld, the welding efficiency is higher, and further enrichment increases Improve the functionality of the wire protection film.

Description

technical field [0001] The invention belongs to the technical field of welding wire manufacturing, and in particular relates to a copper-free solid welding wire and a preparation method thereof. Background technique [0002] The production process of copper-plated solid wire pollutes the environment a lot. The main source of pollution is the copper plating solution. In terms of copper plating solution, the degree of pollution is also different according to the different process methods. At present, three processes are generally used for copper plating production: electroplating, electroplating and electroless plating are used in the whole process, and electroless plating is used in the whole process. [0003] Copper-plated solid wire has many problems during use: [0004] (1) The copper layer is easy to peel off. During the production process of the welding wire, the copper layer on the surface of the welding wire is squeezed by the straightening wheel in the layer winding ...

AI Technical Summary

Problems solved by technology

[0011] Aiming at the environmental pollution of traditional copper-plated welding wire in the production process in the prior art, the copper layer is easy to peel off during use, the welding spatter is large, the weld shape is poor, and the existence of the copper-plated layer affects the overall performance of the welded joint and affects the health of the welder And other issues

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