Copper-free solid welding wire and preparation method thereof

A solid welding wire, copper-free technology, applied in the direction of welding equipment, manufacturing tools, welding media, etc., can solve the problems of affecting the comprehensive performance of welding joints, affecting the health of welders, and poor weld formation, so as to improve the mechanical properties of welds, Rich in functionality and good quality of weld seam formation

Active Publication Date: 2021-08-10
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Copper-free solid welding wire and preparation method thereof
  • Copper-free solid welding wire and preparation method thereof
  • Copper-free solid welding wire and preparation method thereof

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preparation example Construction

[0033]

[0034] The preparation method of copper-free solid welding wire of the present invention comprises the steps:

[0035] (1) After the wire is mechanically peeled and polished with an abrasive belt, it is drawn to the specified wire diameter according to the conventional method to obtain a solid welding wire;

[0036] (2) Perform high-pressure water washing, ultrasonic cleaning, initial drying, soaking, and then drying on the surface of the solid welding wire, and layer winding to obtain a copper-free solid welding wire.

[0037] Wherein, when soaking, the soaking solution includes the following components: 2-5wt% sorbitan monooleate, 3-5wt% sodium petroleum sulfonate, 0.15-0.25wt% benzotriazole (granular or powdery), 0.5-2.5wt% lanolin magnesium soap, 0.25-0.65wt% sodium dodecylsulfonate, 0.1-0.2wt% titanium dioxide, 3-5wt% graphene and / or fullerene, 2-6wt% molybdenum disulfide (the mesh number of molybdenum disulfide ≥ 800 mesh), 0.1-0.2wt% cerium oxide, mineral he...

Embodiment 1

[0054] The preparation method of the copper-free solid welding wire of the present embodiment comprises the steps:

[0055] (1) After mechanical peeling and abrasive belt polishing, the wire is drawn to a solid welding wire with a diameter of 0.8 mm in a conventional manner, and the protective layer of the solid welding wire is processed.

[0056] (2) High-pressure water washing: Put the solid welding wire with a diameter of 0.8 mm into a high-pressure water washing machine for cleaning. The cleaning time is 10 seconds, and the pressure of high-pressure water is 1.5 MPa.

[0057] (3) Ultrasonic cleaning: Put the solid welding wire with a diameter of 0.8mm into the ultrasonic cleaning machine for cleaning; wherein, the ultrasonic cleaning solution is prepared with Rockaway RA-6031 cleaning agent, the temperature of ultrasonic cleaning is 42°C, and the cleaning time is 3min.

[0058] (4) Initial drying: the solid welding wire that has completed the washing process is put into t...

Embodiment 2

[0062] The preparation method of the copper-free solid welding wire of the present embodiment comprises the steps:

[0063] (1) After mechanical shelling and abrasive belt polishing, the wire is drawn to a solid welding wire with a diameter of 1.2 mm in a conventional manner, and the protective layer of the solid welding wire is processed.

[0064] (2) High-pressure water washing: Put the solid welding wire with a diameter of 1.2 mm into a high-pressure water washing machine for cleaning. The cleaning time is 5 seconds, and the pressure of high-pressure water is 2.0 MPa.

[0065] (3) Ultrasonic cleaning: Put the solid welding wire with a diameter of 1.2 mm into the ultrasonic cleaning machine for cleaning; wherein, the ultrasonic cleaning solution is prepared with Rockaway RA-6031 cleaning agent, the temperature of ultrasonic cleaning is 47 ° C, and the cleaning time is 4min.

[0066] (4) Initial drying: the solid welding wire that has completed the water washing process ente...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40B23K35/02
CPCB23K35/0261B23K35/40
Inventor 张天理于航陈毓王伟光王根士袁东峰
Owner SHANGHAI UNIV OF ENG SCI
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