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Copper-vanadium-based gas shielded welding wire for transition layer of titanium-steel composite structure and preparation method of copper-vanadium-based gas shielded welding wire

A composite structure and transition layer technology, applied in welding equipment, welding equipment, arc welding equipment, etc., can solve the problems of high content of brittle compounds between metals, weld cracks, etc., and achieve low cost, good welding process, and operability strong effect

Active Publication Date: 2022-04-15
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a copper-vanadium-based gas-shielded welding wire for the transition layer of a titanium-steel composite structure, which solves the problem of weld cracks caused by the high content of intermetallic brittle compounds in the prior art

Method used

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  • Copper-vanadium-based gas shielded welding wire for transition layer of titanium-steel composite structure and preparation method of copper-vanadium-based gas shielded welding wire

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preparation example Construction

[0036] A method for preparing a copper-vanadium-based gas-shielded welding wire for a transition layer of a titanium-steel composite structure comprises the following steps:

[0037] Step 1. Weighing the raw materials according to mass percentage: V30%-50%, Ni2%-5%, Ag1%-4%, Nb2%-5%, P≤0.003%, S≤0.003%, rare earth element 1% , the rest is copper powder, the sum of the mass percentages of the above components is 100%; the above raw materials are all powder, and the particle size of the powder is not greater than 124 μm;

[0038] Step 2, heating the raw material in step 1 in an argon atmosphere and keeping it warm, the heating temperature is 100°C-300°C, and the holding time is 1h-3h.

[0039] Step 3. Mix the raw materials processed in step 2 in a mixer, and then add a binder for granulation to obtain particles with a particle size of 124 μm to 420 μm; the mass ratio of the binder to the mixed raw materials is 4:72 to 6:120, the binder can be potassium sodium water glass;

[0...

Embodiment 1

[0045] Step 1. Weigh raw materials according to mass percentage: V30%, Ni2%, Ag1%, Nb2%, P0.003%, S0.003%, and the rest is copper powder. The sum of the mass percentages of the above components is 100% ;

[0046] Step 2, heating the raw material in step 1 in an argon atmosphere and keeping it warm, the heating temperature is 200°C, and the keeping time is 2h;

[0047] Step 3. Mix the raw materials processed in step 2 in a mixer, and then add a binder for granulation to obtain particles with a particle size of 270 μm; the mass ratio of the binder to the mixed raw materials is 5:95, and the binder Potassium sodium water glass can be used;

[0048]Step 4, sintering the particles at 700°C and keeping them warm for 2 hours, then cooling, crushing, and finally sieving to obtain 200 μm powder particles;

[0049] Step 5. Wrap the drug powder particles in the copper tape through the flux-cored wire making machine, and use the forming machine to close the copper tape to obtain the sem...

Embodiment 2

[0053] Step 1. Weigh raw materials according to mass percentage: V35%, Ni3%, Ag2%, Nb3%, P0.003%, S0.003%, the rest is copper powder, and the sum of the mass percentages of the above components is 100% ;

[0054] Step 2. Heat the raw material in step 1 in an argon atmosphere and keep it warm. The heating temperature is 200° C. and the holding time is 2 hours.

[0055] Step 3. Mix the raw materials processed in step 2 in a mixer, and then add a binder for granulation to obtain particles with a particle size of 270 μm; the mass ratio of the binder to the mixed raw materials is 5:95, and the binder Potassium sodium water glass can be used;

[0056] Step 4, sintering the particles at 700°C and keeping them warm for 2 hours, then cooling, crushing, and finally sieving to obtain 200 μm powder particles;

[0057] Step 5. Wrap the drug powder particles in the copper tape through the flux-cored wire making machine, and use the forming machine to close the copper tape to obtain the se...

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Abstract

The invention discloses a copper-vanadium-based gas shielded welding wire for a titanium-steel composite structure transition layer and a preparation method of the copper-vanadium-based gas shielded welding wire. A flux core of the welding wire comprises, by mass, 30%-50% of V, 2%-5% of Ni, 1%-4% of Ag, 2%-5% of Nb, not larger than 0.003% of P, not larger than 0.003% of S, 1% of rare earth elements and the balance copper powder, and the sum of the mass percentages of the components is 100%. The method is used for welding a transition layer of a titanium steel layered structure, the content of a Fe-Ti compound brittle phase of a titanium steel composite interface is reduced, a welding joint with high strength and good toughness is obtained, and the actual engineering application is met. The welding manufacturability is good, the arc stability is good, and welding spatter is little; the preparation method of the copper-vanadium-based gas shielded welding wire for the titanium steel composite structure transition layer is simple in process, high in operability, low in cost and suitable for batch production.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to a copper-vanadium-based gas-shielded welding wire for a transition layer of a titanium-steel composite structure, and also relates to a preparation method of the above-mentioned copper-vanadium-based gas-shielded welding wire. Background technique [0002] With the development of metal materials, metal materials will encounter harsh working conditions in practical engineering applications. Usually, an engineering part is required to have many special properties at the same time, such as high specific strength, corrosion resistance, high temperature resistance, and economy. The vast majority of single metal materials cannot have multiple properties at the same time, and traditional single metal materials have been difficult to meet the needs of industry development. Titanium alloys and alloy steel bimetallic composite materials have the advantages of good plastic toughness, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/30B23K35/40B23K9/16
Inventor 张敏尚静郝琛郜雅彦李毅曹齐鲁
Owner XIAN UNIV OF TECH
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