Welding wire for repairing worn positions of wear-resistant components and manufacturing method thereof

A technology of welding wire and parts, which is applied in the field of welding wire and its manufacture for repairing worn parts of wear-resistant parts, and in the field of welding wire and its preparation, can solve the problems of high production cost, high price, and difficulty in popularization and application of welding wire, and achieve low production cost and high production efficiency. The effect of simple process and convenient mass production

Inactive Publication Date: 2013-12-04
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the various welding wires currently developed generally contain more expensive alloying elements such as nickel, molyb

Method used

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  • Welding wire for repairing worn positions of wear-resistant components and manufacturing method thereof
  • Welding wire for repairing worn positions of wear-resistant components and manufacturing method thereof
  • Welding wire for repairing worn positions of wear-resistant components and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The welding wire used for repairing the worn part of the wear-resistant part is composed of two parts: the low-carbon steel strip with the outer skin and the powder core material. The powder core materials include high-carbon ferrochromium powder, ferrochrome nitride powder, ferroboron powder, ferrotitanium powder, rare earth ferrosilicon powder, silicon calcium barium alloy powder, sodium-containing substance powder and potassium-containing substance powder, which are used for wear resistance The specific manufacturing process of welding wire for repairing worn parts of components is as follows:

[0034] ① First, 40-100 mesh high-carbon ferrochromium powder (mass fraction of chemical composition: 62.0-68.0% Cr, 7.0-8.5% C, 2.0-3.5% Si, the balance is Fe), ferrochrome nitride Powder (mass fraction of chemical composition: 60~63%Cr, 5.0~6.5%N, C≤0.1%, Si≤2.5%, P≤0.03%, S≤0.04%, the balance is Fe), boron iron powder ( The chemical composition mass fraction is: 19.0~21.0%...

Embodiment 2

[0037]The welding wire used for repairing the worn part of the wear-resistant part is composed of two parts: the low-carbon steel strip with the outer skin and the powder core material. The powder core materials include high-carbon ferrochromium powder, ferrochrome nitride powder, ferroboron powder, ferrotitanium powder, rare earth ferrosilicon powder, silicon calcium barium alloy powder, sodium-containing substance powder and potassium-containing substance powder, which are used for wear resistance The specific manufacturing process of welding wire for repairing worn parts of components is as follows:

[0038] ① First, 40-100 mesh high-carbon ferrochromium powder (mass fraction of chemical composition: 62.0-68.0% Cr, 7.0-8.5% C, 2.0-3.5% Si, the balance is Fe), ferrochrome nitride Powder (mass fraction of chemical composition: 60~63%Cr, 5.0~6.5%N, C≤0.1%, Si≤2.5%, P≤0.03%, S≤0.04%, the balance is Fe), boron iron powder ( The chemical composition mass fraction is: 19.0~21.0%B...

Embodiment 3

[0041] The welding wire used for repairing the worn part of the wear-resistant part is composed of two parts: the low-carbon steel strip with the outer skin and the powder core material. The powder core materials include high-carbon ferrochromium powder, ferrochrome nitride powder, ferroboron powder, ferrotitanium powder, rare earth ferrosilicon powder, silicon calcium barium alloy powder, sodium-containing substance powder and potassium-containing substance powder, which are used for wear resistance The specific manufacturing process of welding wire for repairing worn parts of components is as follows:

[0042] ① First, 40-100 mesh high-carbon ferrochromium powder (mass fraction of chemical composition: 62.0-68.0% Cr, 7.0-8.5% C, 2.0-3.5% Si, the balance is Fe), ferrochrome nitride Powder (mass fraction of chemical composition: 60~63%Cr, 5.0~6.5%N, C≤0.1%, Si≤2.5%, P≤0.03%, S≤0.04%, the balance is Fe), boron iron powder ( The chemical composition mass fraction is: 19.0~21.0%...

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Abstract

The invention discloses a welding wire for repairing worn positions of wear-resistant components and a manufacturing method of the welding wire. The welding wire is characterized by comprising a shell mild-carbon steel strip and a powder core material, wherein the power core material comprises high-carbon ferrochrome powder, nitrided ferrochrome powder, ferroboron powder, ferrotitanium powder, rare earth ferrosilicon powder, silicon-calcium-barium alloy powder, powder containing sodium substances and power containing potassium substances, and the power core material comprises the alloy powder, by mass, 55-61% of the high-carbon ferrochrome powder, 18-20% of the nitrided ferrochrome powder, 12-15% of the ferroboron powder, 4-5% of the ferrotitanium powder, 1.0-1.5% of the rare earth ferrosilicon powder, 1.0-1.5% of the silicon-calcium-barium alloy powder, 1.0-1.5% of the powder containing sodium substances and 1.5-2.0% of the power containing potassium substances. The ratio of the mass of the powder core material to the total mass of the welding wire is 25-30%. The welding wire has the advantages of being free of expensive alloy elements, low in cost and easy to massively produce.

Description

technical field [0001] The invention discloses a welding wire and a preparation method thereof, in particular to a welding wire used for repairing worn parts of wear-resistant parts and a manufacturing method thereof, and belongs to the technical field of surface treatment. Background technique [0002] In various industrial sectors such as metallurgy, mining, building materials and military affairs, many workpieces and equipment fail rapidly due to wear and tear, resulting in waste of materials and manpower, and huge losses to the national economy. The low life of wearable parts has become a serious problem in the development of production. obstacle. In order to improve the wear resistance of the material, Chinese invention patent CN102847933A discloses a high-temperature wear-resistant material for the lining of blast furnace tuyere sleeves, which is made of the following raw materials in weight ratio: 40-60% nano-copper powder, nano-tungsten powder 36-56%, iron powder 0....

Claims

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Application Information

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IPC IPC(8): B23K35/368B23K35/40
Inventor 蒋志强成小乐蒋业华冯锡兰符寒光魏永强刘建伟
Owner BEIJING UNIV OF TECH
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