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A kind of welding wire for laser wire filler welding of silicon steel and its preparation method and welding method

A technology of laser wire filling and welding method, which is applied in the direction of welding equipment, welding medium, welding/cutting medium/material, etc. It can solve the problems of low alloy steel and high rate of welding broken strips, achieve good strength and toughness matching, and reduce broken strips High efficiency and excellent anti-porosity performance

Active Publication Date: 2021-03-23
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 wire filler 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%; Ni: 0.011%; Ni: 1.7%; the balance is Fe. Wherein the weight percentage of component Ti and component B is Ti:B≈9.09:1.

Embodiment 2

[0040] A welding wire for laser wire filler 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%; Ni: 0.008%; Ni: 2.1%; the balance is Fe. The weight percentage of component Ti and component B is Ti:B=10:1.

Embodiment 3

[0042] A welding wire for laser wire filler 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%; : 0.007%; Ni: 1.2%; the balance is Fe. Wherein the weight percentage of component Ti and component B 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 field of welding technology, and in particular relates to a welding wire for laser wire-filling welding of silicon steel, a preparation method and a welding method thereof. Background technique [0002] In order to improve production efficiency and finished product rate in the production process of silicon steel, it is necessary to weld the end of each coiled steel strip to the head of the subsequent steel strip to form a weld, and then conduct continuous heat treatment. The entire heat treatment production line is more than 1000 meters long and must Secondary bending, reverse bending and straightening process require high weld quality. If there is any fracture during heat treatment, all subsequent coils will be scrapped, resulting in huge losses and seriously affecting production efficiency. [0003] Laser wire-filled welding has the characteristics of fast speed, high efficiency, and good weld quality. It has been succe...

Claims

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Application Information

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Patent Type & Authority Patents(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