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Welding wire for low alloy steel

A low-alloy steel and welding wire technology, applied in welding medium, welding equipment, metal processing equipment, etc., can solve problems such as rough weld seam, unsatisfactory mechanical properties of deposited metal, and unevenness

Inactive Publication Date: 2017-05-24
天长市通联焊业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the traditional welding wire welds low-alloy steel, there is welding slag firmly bonded to the weld, which makes it very difficult to clean and smooth the weld slag, and the weld shape is poor; moreover, after cleaning the welding slag and grinding, the weld The seam is still rough and uneven, and the mechanical properties of the deposited metal are not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The present invention proposes a welding wire for low-alloy steel, its components in mass fractions include: C: 0.3%, Si: 0.45%, Cu: 0.8%, Mg: 0.3%, Nb: 0.08%, Al: 0.4%, K: 0.02%, Mn: 2.1%, Ni: 0.4%, Cr: 3%, Ti: 0.25%, Sr: 0.15%, Mo: 0.08%, V: 0.12%, Nd: 0.002%, Ce: 0.005%, The rest is Fe and inevitable impurities.

Embodiment 2

[0017] The present invention proposes a welding wire for low-alloy steel, the composition of which according to mass fraction includes: C: 0.6%, Si: 0.25%, Cu: 1.5%, Mg: 0.1%, Nb: 0.2%, Al: 0.2%, K: 0.08%, Mn: 1.6%, Ni: 0.5%, Cr: 1.5%, Ti: 0.4%, Sr: 0.05%, Mo: 0.15%, V: 0.04%, Nd: 0.01%, Ce: 0.015%, The rest is Fe and inevitable impurities.

Embodiment 3

[0019] The present invention proposes a welding wire for low alloy steel, the composition of which according to mass fraction includes: C: 0.45%, Si: 0.35%, Cu: 1.2%, Mg: 0.2%, Nb: 0.13%, Al: 0.29%, K: 0.05%, Mn: 1.85%, Ni: 0.45%, Cr: 2.2%, Ti: 0.33%, Sr: 0.1%, Mo: 0.12%, V: 0.08%, Nd: 0.006%, Ce: 0.01%, The rest is Fe and inevitable impurities.

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PUM

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Abstract

The invention discloses a welding wire for low alloy steel. The welding wire is prepared from components as follows: C, Si, Cu, Mg, Nb, Al, K, Mn, Ni, Cr, Ti, Sr, Mo, V, Nd, Ce and the balance of Fe and inevitable impurities. The welding wire for low alloy steel has good welding performance, during welding, electric arc is stable, small splashing is produced, welding fluid liquidity is good, the weld surface is uniformly covered with welding slag, so that interfacial tension of the welding slag and deposited metal is increased, slag detachability is improved, formation of the obtained weld is good, the weld surface is free of cracks and pores, and the deposited metal has good mechanical properties.

Description

Technical field [0001] The invention relates to the technical field of metal materials, in particular to a welding wire for low alloy steel. Background technique [0002] Low alloy steel has good weldability, excellent formability and low manufacturing cost, so it is widely used in the fields of containers, bridges, construction, engineering machinery, ships, vehicles and aerospace. When traditional welding wire is welding low-alloy steel, the slag is firmly bonded to the weld, which makes it very difficult to clean and smooth the weld slag, and the weld shape is poor. Furthermore, after cleaning the slag and grinding, the welding The seam is still rough and uneven, and the mechanical properties of the deposited metal are not ideal. These have affected the quality of low alloy steel. Summary of the invention [0003] Based on the technical problems existing in the background art, the present invention proposes a welding wire for low alloy steel, which has good welding performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
CPCB23K35/3086B23K35/0261
Inventor 卢齐元
Owner 天长市通联焊业有限公司
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