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High-amorphous nanocrystalline protection tubular welding wire

An amorphous nanocrystalline, tubular welding wire technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., to achieve the effect of improving bonding strength and eliminating welding defects

Active Publication Date: 2016-04-20
JIANGXI HENGDA HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the surfacing material in the patent CN201110218266.X "An Amorphous Structured Surfacing Flux-Cored Welding Wire" has a small amount of amorphous, and does not solve the transition problem between the amorphous structure and the matrix, which will leave the weld defect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] Example 1. Atomized powder made of Al20%, Zr18%, Ti16%, V9%, Cu8%, Ni6%, B6.5%, Mn3%, P1.5%, N1.5%, and hafnium carbide 6 %, graphite 3% and the remaining amount of rare earth nano additive powder, stir evenly with a V-type powder mixer, then wrap the powder with a 0.28mm thick 430 stainless steel tape, and make it into a diameter of φ3 by forming machine rolling, drawing unit drawing and other processes .2mm self-protected powder-cored surfacing wire. Overlay welding of wear-resistant cladding layer 3-4mm on 16Mn steel plate, welding current 260-280A, welding voltage 34-36V. The hardness of the wear-resistant cladding layer after welding is HRC71, the amorphous content is 49%, and most of the remaining are nanocrystalline. SEM scanning electron microscope shows that the transition between the amorphous cladding layer and the substrate is gentle, which is a metallurgical bond, and the interface and the substrate have equal strength.

example 2

[0015] Example 2. Take the atomized powder made of Al21%, Zr19%, Ti16%, V11%, Cu6%, Ni7%, B6%, Mn2%, P1.5%, N1%, and hafnium carbide 5.5%, graphite 2.5 % And the remaining amount of rare earth nano additive powder, stir evenly with a V-type powder mixer, and then wrap the powder with a 0.28mm thick 430 stainless steel tape. After rolling on the forming machine, drawing by the drawing unit, the powder is made into a diameter of 3.2mm for self-protection. Powder cored welding wire. Overlay welding of wear-resistant cladding layer 3-4mm on 16Mn steel plate, welding current 260-280A, welding voltage 34-36V. The hardness of the wear-resistant cladding layer after welding is HRC72, the amorphous content is 51%, and most of the remaining are nanocrystalline. SEM scanning electron microscopy shows that the transition between the amorphous cladding layer and the substrate is gentle, which is a metallurgical bond, and the interface and the substrate have equal strength.

[0016] Example 3...

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Abstract

The invention relates to a self-protection welding material, in particular to a tubular welding wire for surfacing capable for forming high amorphous nanocrystalline content, and belongs to the technical field of wear-resistant and corrosion-resistant materials. The tubular welding wire comprises the following powder core components in percentage by mass: 19-22% of Al, 17-20% of Zr, 15-18% of Ti, 9-12% of V, 6-9% of Cu, 5-8% of Ni, 4-7% of B, 2-3% of Mn, 1-2% of P, 1-1.5% of N, 4-9% of hafnium carbide, 2-5% of graphite, and the balance of rare earth nanometer additive. The self-protection powder core tubular welding wire can directly perform surfacing under the conditions of adding of no flux and protective gas; the formed surfacing layer is higher in amorphous nanocrystalline content; the amorphous and basal body transition problem is preferably solved; the bonding strength is improved; and the cladding layer is excellent in wear and corrosion resistance.

Description

Technical field [0001] The invention relates to a welding material, in particular to a high amorphous nanocrystalline self-protected tubular welding wire, belonging to the technical field of anti-wear and corrosion-resistant materials. Background technique [0002] With the aggravation of the working environment, such as seawater erosion, atmospheric corrosion and acid-base corrosion, people have higher and higher requirements for the performance of materials, such as high strength, high hardness, oxidation resistance, abrasion resistance and corrosion resistance. There are two main methods to solve this problem. One is to select materials reasonably and use expensive high-performance materials under the corresponding use environment, and the other is to use reasonable surface engineering techniques to prepare high-performance surface coatings or The surface of the material is modified to meet the application requirements of wear resistance and corrosion resistance. [0003] The m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/24B23K35/40
CPCB23K35/24B23K35/40
Inventor 不公告发明人
Owner JIANGXI HENGDA HI TECH CO LTD
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