Manufacture process of high-strength welding wires

Abstract

The invention discloses a manufacture process of high-strength welding wires capable of producing manufacture process of high-strength welding wires with high composite performance. The process comprises following steps: smelting welding wires, performing acid pickling in an off-line manner, pulling and pushing welding wires, plating welding wires with copper and welding welding wires layer by layer. The middle link of the step for pulling and pushing welding wires comprises an annealing process of welding wires. An experiment shows that the annealing process added to the middle link of the step for pulling and pushing welding wires has great advantages. Therefore, the annealing process is selected for production of high-strength welding wires. The high-strength welding wires do not crake during production and smooth production of processes for pulling and pushing welding wires, plating welding wires with copper is ensured. As a result, smooth production of high-strength welding wires is ensured and welding wires produced are featured by being good in cooper plating bonding force and usage performance, stable in arcs and little in weld spatter and attractive in welding line formation.

Description

technical field [0001] The invention belongs to the field of welding wire, and in particular relates to a welding wire manufacturing process. Background technique [0002] At present, in the field of welding wire production, especially in the manufacturing process of high-strength welding wire above 780MPa, the main alloy system of welding wire is Mn-Ni-Cr-Mo system. Impact performance, a certain amount of microalloying elements Ti and Zr are added to the welding wire. Due to the increase in the content of alloy elements in the welding wire, the hardness of the disc element increases, the plasticity decreases, and the work hardening of the welding wire is intensified. Due to the high strength of the semi-finished product of the high-strength welding wire, it is very easy to crack during the drawing process. The process is very difficult, and the conventional manufacturing process cannot guarantee the smooth production of welding wire, which is an undesirable drawing manufac...

AI Technical Summary

Problems solved by technology

Due to the increase in the content of alloy elements in the welding wire, the hardness of the plate element increases, the plasticity decreases, and the work hardening of the welding wire is intensified. Due to the high strength of the semi-finished product of the high-strength welding wire, it is very easy to crack during the drawing process. The process is very difficult, and the conventional manufacturing process cannot guarantee the smooth production of welding wire, so it is not advisable to draw the manufacturing process

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