Technology for manufacturing gas protection welding wire

Abstract

The invention discloses a gas protective welding wire and manufacturing technology thereof. The gas protective welding wire comprises a wire core which is formed by drawing low carbon steel materials or low alloy steel materials, wherein a titanized layer with a thickness between 0.04 and 0.11 mu m is arranged on the surface of the wire core. The gas protective welding wire is a titanized weldingwire which is manufactured by washing the surface of the wire core, titanizing the wire core in an acid chemical titanizing solution, performing neutralization and washing after titanizing, and usinga diamond die to perform polishing extrusion in a carrier lubricant special for a welding wire without a copperized solid core. The gas protective welding wire of which the surface is provided with titanium and a titanium oxide clad layer is taken as a novel welding wire for replacing the prior copperized welding wire, and can effectively reduce copper smog during welding so as to reduce the harmof the copper smog on human body. Under the condition of welding with the same current and the same voltage, the welding splash is small; micro titanium in the welding wire contributes to improvementof the mechanical properties of welding seams; and simultaneously the welding wire has longer shelf life due to protection of the surface titanized layer.

Description

technical field [0001] The invention relates to the field of welding, in particular to a manufacturing process of a gas-shielded welding wire used for gas-shielded welding production of materials such as carbon steel and alloy steel. Background technique [0002] Traditional gas-shielded welding wires are generally copper-plated carbon steel wires or copper-plated low-alloy steel wires. Copper-coated wires have a lot of copper fume during welding, which will cause great harm to the welding operator, and copper elements will affect the mechanical properties of the steel. , so general carbon steel and low-alloy steel welding wires have restrictions on copper content. In addition, the shelf life of copper-plated welding wires is relatively short. cost to achieve the purpose of extending the shelf life. In recent years, the export volume of copper-plated welding wire in my country has increased sharply, but the export time is relatively long, so the shelf life requirements are ...

AI Technical Summary

Problems solved by technology

[0002] Traditional gas-shielded welding wires are generally copper-plated carbon steel wires or copper-plated low-alloy steel wires. Copper-coated wires have a lot of copper fume during welding, which will cause great harm to the welding operator, and copper elements will affect the mechanical properties of the steel. , so general carbon steel and low-alloy steel welding wires have restrictions on copper content. In addition, the shelf life of copper-plated welding wires is relatively short. cost to achieve the purpose of extending the shelf life

In recent years, the export volume of copper-plated welding wire in my country has increased sharply, but the export time is relatively long, so the shelf life requirements are also higher. However, some foreign customers have more outstanding requirements in terms of environmental protection and welding performance, so special emphasis Copper-plated welding wire is not allowed to add anti-rust paper and other anti-rust liquid. For this reason, many domestic welding wire export manufacturers have been complained or even returned due to the short shelf life of welding wire and easy rust, which affects their international market expansion and international reputation. For this reason, in the existing welding wire manufacturing process, titanium oxide is usually plated on the surface of the welding wire core by electrodeposition to form a titanium oxide protective layer on the surface of the welding wire to protect the welding core. However, this traditional electroplating method , not only is not conducive to environmental protection, but also the surface roughness quality of the plated welding wire is not high, when the welding wire is used, the wire feeding performance is not good, and the welding spatter is large

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