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Flux-cored wire

A technology of flux-cored welding wire and flux-cored, applied in welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of easy spattering, easy cracking of coating, etc.

Active Publication Date: 2017-09-05
安徽飞弧焊业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Using flux-cored welding wire to repair damaged metal parts by surfacing welding can reuse damaged metal parts and reduce the waste of parts, but in the process of surfacing welding, it is easy to generate spatter, which makes there are pores in the welding coating, and the coating is easy to crack.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0015] A flux-cored welding wire, comprising a low-carbon steel strip sheath and a flux core, wherein the raw materials of the flux core include: graphite 1.5%, chromium powder 16%, manganese powder 1.5%, nickel powder 5%, niobium powder 5%, 2 parts of vanadium powder, 1.2% of titanium dioxide, 0.7% of silicon dioxide, 4.5% of rhenium oxide, 4.5% of cerium oxide, slagging agent, oxidizing agent and reducing agent, and the balance is iron powder.

Embodiment 2

[0017] A flux-cored welding wire, including a low-carbon steel strip sheath and a flux core, wherein the raw materials of the flux core include: graphite 1%, chromium powder 17%, manganese powder 1%, nickel powder 6%, niobium powder 4%, 3 parts of vanadium powder, 1% of titanium dioxide, 1% of silicon dioxide, 4% of rhenium oxide, 5% of cerium oxide, slagging agent, oxidant and reducing agent, and the balance is iron powder;

[0018] Wherein, the weight ratio of cerium oxide, slagging agent, oxidizing agent and reducing agent is 5:6:15:2;

[0019] The slagging agent is calcium fluoride and sodium fluozirconate, wherein the weight ratio of calcium fluoride and sodium fluozirconate is 8:1;

[0020] The reducing agent is magnesia, wherein, the content of magnesia is 95wt%;

[0021] The oxidant is lithium carbonate and ferric oxide; the weight ratio of lithium carbonate and ferric oxide is 6:1.

Embodiment 3

[0023] A flux-cored welding wire, comprising a low-carbon steel strip sheath and a flux core, wherein the raw materials of the flux core include: graphite 2%, chromium powder 15%, manganese powder 2%, nickel powder 4%, niobium powder 6%, 1 part of vanadium powder, 1.5% of titanium dioxide, 0.5% of silicon dioxide, 5% of rhenium oxide, 4% of cerium oxide, slagging agent, oxidizing agent and reducing agent, and the balance is iron powder;

[0024] Wherein, the weight ratio of cerium oxide, slagging agent, oxidizing agent and reducing agent is 4:7:13:4;

[0025] The slagging agent is calcium fluoride and sodium fluozirconate, wherein the weight ratio of calcium fluoride and sodium fluozirconate is 7:1;

[0026] The reducing agent is magnesia, wherein the content of magnesia is 98wt%;

[0027] The oxidant is lithium carbonate and ferric oxide; the weight ratio of lithium carbonate and ferric oxide is 4:1.

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Abstract

The invention discloses a flux-cored wire. The flux-cored wire comprises a low-carbon steel tape sheath and a flux core, wherein the flux core is prepared from the following raw materials according to weight percent: 1 to 2% of graphite, 15 to 17% of chromium powder, 1 to 2% of manganese powder, 4 to 6% of nickel powder, 4 to 6% of columbium powder, 1 to 3% of vanadium powder, 1 to 1.5% of titanium dioxide, 0.5 to 1% of silicon dioxide, 4 to 5% of rhenium oxide, 4 to 5% of cerium oxide, slag formers, oxidizing agents, reducing agents and the balance of iron powder. According to the flux-cored wire, all substances are matched with each other, so that the welding spatter problem can be greatly reduced, the porosity of a welding coating is low, the coating structure is compact, the toughness is good, and the strength is high.

Description

technical field [0001] The invention relates to the field of welding wire technology, in particular to a flux-cored welding wire. Background technique [0002] Using flux-cored welding wire to repair damaged metal parts by surfacing welding can reuse damaged metal parts and reduce the waste of parts, but in the process of surfacing welding, spatter is prone to occur, making pores in the welding coating, and the coating is easy to crack. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a flux-cored welding wire. The present invention can greatly reduce the problem of welding spatter through the cooperation of various substances, so that the welding coating has low porosity, dense coating structure and good toughness. high strength. [0004] A flux-cored welding wire proposed by the present invention includes a low-carbon steel strip sheath and a flux core, wherein the raw materials of t...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/368
CPCB23K35/0266B23K35/3086B23K35/3602B23K35/368
Inventor 卢齐元
Owner 安徽飞弧焊业股份有限公司
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