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High amorphous and nanocrystalline self-shielding 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: 2017-12-29
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 Al 20%, Zr 18%, Ti 16%, V 9%, Cu 8%, Ni 6%, B 6.5%, Mn 3%, P 1.5%, N1.5% , and hafnium carbide 6%, graphite 3% and the balance of rare earth nano-additive powder, stir evenly with a V-type powder mixer, wrap the powder with a 430 stainless steel belt with a thickness of 0.28mm, and roll it by a forming machine and draw it by a wire drawing unit, etc. The process is made into self-shielding powder core surfacing wire with a diameter of φ3.2mm. Surfacing 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 rest are nanocrystalline. The SEM scanning electron microscope shows that the transition between the amorphous cladding layer and the substrate is smooth, which belongs to metallurgical bonding, and the interface and the substrate have equal strength.

example 2

[0015] Example 2. Take Al 21%, Zr 19%, Ti 16%, V 11%, Cu 6%, Ni 7%, B 6%, Mn 2%, P 1.5%, N 1% made of atomized powder, And hafnium carbide 5.5%, graphite 2.5% and the balance of rare earth nano-additive powder, stir evenly with a V-type powder mixer, wrap the powder with a 430 stainless steel belt with a thickness of 0.28mm, and roll through the forming machine, drawing by the wire drawing unit and other processes Made into φ3.2mm diameter self-shielding powder core surfacing wire. Surfacing 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 rest are nanocrystalline. The SEM scanning electron microscope shows that the transition between the amorphous cladding layer and the substrate is smooth, which belongs to metallurgical bonding, and the interface and the substrate have equal strength.

example 3

[0016] Example 3. Take Al 19%, Zr 19%, Ti 16%, V 9%, Cu 8%, Ni 7%, B 4%, Mn 2%, P 1%, N 1% made of atomized powder, And hafnium carbide 8%, graphite 4% and the balance of rare earth nano-additive powder, stir evenly with a V-type powder mixer, wrap the powder with a 430 stainless steel belt with a thickness of 0.28mm, and roll through the forming machine, drawing by the wire drawing unit and other processes Made into φ3.2mm diameter self-shielding powder core surfacing wire. Surfacing wear-resistant cladding layer 3-4mm on 16Mn steel plate, welding current 250-270A, welding voltage 34-36V. The hardness of the wear-resistant cladding layer after welding is HRC69, the amorphous content is 46%, and most of the rest are nanocrystalline. The SEM scanning electron microscope shows that the transition between the amorphous cladding layer and the substrate is smooth, which belongs to metallurgical bonding, and the interface and the substrate have equal strength.

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Abstract

The invention relates to a self-protection welding material, in particular to a tubular welding wire for overlay welding capable of forming high amorphous and nanocrystalline content, and belongs to the technical field of anti-wear and anti-corrosion materials. The mass percentage range of tubular welding wire powder core is as follows: Al 19‑22%, Zr 17‑20%, Ti 15‑18%, V 9‑12%, Cu 6‑9%, Ni 5‑8%, B 4‑7 %, Mn 2‑3%, P 1‑2%, N1‑1.5%, the rest is hafnium carbide 4‑9%, graphite 2‑5% and the balance of rare earth nano additives. The self-shielding powder-cored tubular welding wire of the present invention can be directly surfacing without adding any flux and shielding gas, and the surfacing layer formed has a relatively high content of amorphous and nanocrystalline, and solves the problems of amorphous and nanocrystalline The transition problem of the matrix improves the bonding strength, and the cladding layer has good anti-wear and anti-corrosion functions.

Description

technical field [0001] The invention relates to a welding material, in particular to a highly amorphous and nanocrystalline self-protective tubular welding wire, which belongs to the technical field of wear-resistant and corrosion-resistant materials. Background technique [0002] With the aggravation of the harshness of the working environment such as seawater erosion, atmospheric corrosion and acid-base corrosion, people have higher and higher performance requirements for materials, such as high strength, high hardness, oxidation resistance, wear resistance and corrosion resistance, etc. There are two main ways to solve this problem, one is to select materials reasonably in the corresponding use environment and use expensive high-performance materials, and the other is to use reasonable surface engineering technology to prepare high-performance surface coatings or to The surface of the material is modified to meet the application requirements of wear resistance and corrosi...

Claims

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Application Information

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Patent Type & Authority Patents(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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