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Welding wire for silicon steel laser filler wire welding, preparation method of welding wire, and welding method

A technology of laser wire filling and welding method, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems of high welding strip breakage rate and low alloy steel, etc. The effect of well-matched, excellent impact toughness

Active Publication Date: 2018-12-11
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a low-alloy steel high-toughness solid welding wire for laser wire-filling welding, which solves the problem that the current silicon steel laser wire-filling welding has a high rate of broken strips

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A welding wire for laser filler wire welding of silicon steel, comprising the following components by weight percentage: C: 0.05%; Si: 0.20%; Mn: 1.80%; P: 0.010%; S: 0.007%; Ti: 0.10%; B : 0.011%; Ni: 1.7%; the balance is Fe. The weight percentage of component Ti and component B content is Ti: B≈9.09:1.

Embodiment 2

[0040] A welding wire for laser filler wire welding of silicon steel, comprising the following components by weight percentage: C: 0.04%; Si: 0.40%; Mn: 2.20%; P: 0.011%; S: 0.006%; Ti: 0.08%; B : 0.008%; Ni: 2.1%; the balance is Fe. The weight percentage of the content of the component Ti and the component B is Ti:B=10:1.

Embodiment 3

[0042] A welding wire for laser filler wire welding of silicon steel, comprising the following components by weight percentage: C: 0.08%; Si: 0.35%; Mn: 1.50%; P: 0.013%; S: 0.006%; Ti: 0.06%; B : 0.007%; Ni: 1.2%; the balance is Fe. The weight percentage of component Ti and component B content is Ti:B≈8.57:1.

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Abstract

The invention discloses welding wire for silicon steel laser filler wire welding, a preparation method of the welding wire, and a welding method. The welding wire comprises the following components of, by weight, 0.03-0.10% of C, less than 0.50% of Si, 1.50-2.50% of Mn, less than 0.015% of P, less than 0.010% of S, 0.05-0.15% of Ti, 0.005-0.015% of B, 1.0-3.0% of Ni, and the balance Fe. The welding wire for silicon steel laser filler wire welding has good electric arc stability and meanwhile has the excellent impact toughness, the impact toughness of weld metal at 0 DEG C is greater than 100 J, the weld metal toughness is good in matching, the weld metal has the outstanding characteristics of high intensity and high toughness and has the excellent anti-porosity property, weld joint is formed attractively, the connecting intensity is high, and the strip breaking rate of the silicon steel weld joint can be effectively decreased.

Description

Technical field [0001] The application belongs to the technical field of welding, and specifically relates to a welding wire for laser filler wire welding of silicon steel, and a preparation method and welding method thereof. Background technique [0002] In order to improve the production efficiency and yield rate in the production of silicon steel, the ends of each coil of steel strip and the head of subsequent strips need to be welded to form a weld, and then continuous heat treatment is carried out. The length of the entire heat treatment production line exceeds 1000 meters, which requires more The secondary bending, reverse bending and straightening processes require very high weld quality. If there is a fracture during the heat treatment process, the subsequent coils will be scrapped, resulting in huge losses and severely affecting production efficiency. [0003] Laser wire filler welding has the characteristics of fast speed, high efficiency, and good weld quality. It has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3053B23K35/40
Inventor 牟淑坤张飞虎赵英建杨建炜陈延清刘宏
Owner SHOUGANG CORPORATION
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