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High-strength carbon dioxide protecting surfacing flux-cored wire

A technology of carbon dioxide and gas shielding, applied in welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of few types of flux-cored welding wires and poor toughness in gas shielded surfacing welding, and achieve excellent welding processability, durability Excellent wear performance and good slag coverage

Inactive Publication Date: 2012-11-14
LUOYANG SHUANGRUI SPECIAL ALLOY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a hard carbon dioxide gas shielded surfacing welding flux-cored wire, thereby overcoming the poor toughness of the current high-hardness surfacing welding flux-cored welding wire and the thin diameter CO 2 The problem of fewer types of gas-shielded surfacing flux-cored wires;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Rutile: 13%, fluoride: 26%, magnesia: 3%, potassium feldspar: 2%, aluminum-magnesium alloy: 2%, metallic chromium: 21%, flake graphite: 5%, 45# ferrosilicon: 4 %, manganese metal: 7%, ferromolybdenum: 5%, ferro-vanadium: 3%, tungsten metal: 7%, rare earth: 2%, and the powder weight filling rate is 18%.

[0033] In the formula, fluoride includes sodium fluorosilicate and potassium cryolite, of which sodium fluorosilicate is 18%, potassium cryolite is 8%; the mass content of aluminum in the aluminum-magnesium alloy is 47-53%, and the mass content of magnesium is ≥ 47%; the mass content of molybdenum in ferromolybdenum is ≥ 55%; the mass content of vanadium in ferro-vanadium is 38-45%; the mass content of boron in ferroboron is 19-25%; the mass content of silicon in ferrosilicon is 43% ~47%. The rare earth specification is REO≥83%, CeO 2 / REO ≥ 45, F ≥ 26%.

Embodiment 2

[0035] Rutile: 30%, fluoride: 5%, magnesia: 3%, quartz: 5%, potassium feldspar: 2%, aluminum-magnesium alloy: 2%, metallic chromium: 14%, flake graphite: 6%, 45 # Ferrosilicon: 2%, metal manganese: 8%, molybdenum ferro: 7%, vanadium iron: 6%, boron iron: 2%, metal tungsten 6%, rare earth: 2%. The powder filling rate is 22%.

[0036] In the formula, the fluoride is fluorite; the mass content of aluminum in the aluminum-magnesium alloy is 47-53%, and the mass content of magnesium is ≥47%; the mass content of molybdenum in ferromolybdenum is ≥55%; The mass content of boron in ferroboron is 19-25%; the mass content of silicon in ferrosilicon is 43-47%. The rare earth specification is REO≥83%, CeO 2 / REO ≥ 45, F ≥ 26%.

Embodiment 3

[0038] Rutile: 17%, fluoride: 7%, magnesia: 5%, quartz: 3%, potassium feldspar: 4%, aluminum-magnesium alloy: 3%, metallic chromium: 20%, flake graphite: 8%, 45 #Ferosilicon: 2%, manganese metal: 9%, ferromolybdenum: 6%, ferrovanadium: 4%, tungsten metal 8%, rare earth: 4%, and the balance is iron powder. The powder filling rate is 20%.

[0039] In the formula, fluoride includes two kinds of fluorite and potassium cryolite, of which 5% of fluorite and 2% of potassium cryolite; the mass content of aluminum in the aluminum-magnesium alloy is 47-53%, and the mass content of magnesium is ≥47%; The mass content of molybdenum is ≥55%; the mass content of vanadium in ferrosilicon is 38-45%; the mass content of boron in ferroboron is 19-25%; the mass content of silicon in ferrosilicon is 43-47%. The rare earth specification is REO≥83%, CeO 2 / REO ≥ 45, F ≥ 26%.

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Abstract

The invention discloses a high-strength carbon dioxide protecting surfacing flux-cored wire. The raw material of the wire is a common low-carbon cold rolled steel band, and the filled flux core powder accounts for 17 to 22 percent of the total weight of the wire. The flux core comprises 13 to 30 percent of rutile, 5 to 26 percent of fluoride, 3 to 14 percent of magnesia clinker, 0 to 10 percent of quartz, 2 to 8 percent of potassium feldspar, 2 to 5 percent of aluminum magnesium alloy, 14 to 33 percent of metal chrome, 5 to 15 percent of flake graphite, 2 to 5 percent of No.45 ferrosilicon, 7to 11 percent of metal manganese, 5 to 12 percent of ferromolybdenum, 0 to 6 percent of ferrovanadium, 0 to 5 percent of ferroboron, 6 to 12 percent of metal tungsten, 2 to 8 percent of rare earth and the balance of iron. In the invention, the wire welding process is advanced, the electric arc is stable during welding, all position welding is realized, slag covering is good, deslagging is easy, and the weld joint is elegant, no crack is formed after multiplayer welding, the impact resistance is high, the Rockwell hardness (HRC) of the welding layer can reach 55 to 61, and the wear resistance is high.

Description

technical field [0001] The invention relates to a technique in the field of welding, in particular to a high-hardness carbon dioxide gas shielded surfacing welding flux-cored welding wire. Background technique [0002] Surfacing welding technology is a welding process that makes the surface of parts obtain deposited metal with special properties such as wear resistance, corrosion resistance and heat resistance. It has been widely used in the manufacture and repair of parts in metallurgical machinery, mining machinery, agricultural machinery, construction machinery, petrochemical equipment, transportation, nuclear power equipment, aerospace industry and other departments. With the continuous development of the country's industrialization, urgent requirements are put forward for the development of new cemented carbide materials and corresponding surfacing materials. Compared with other welding materials, flux-cored wire has the advantages of flexible and convenient alloy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/36
Inventor 刘瞿王效莲
Owner LUOYANG SHUANGRUI SPECIAL ALLOY MATERIALS
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