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Flux-cored wire for welding titanium-steel composite plate and preparation method of flux-cored wire

A technology of flux-cored welding wire and clad plate, which is applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problem that titanium-steel clad plate cannot be welded butt joint, etc. The effect of few elements and simple preparation process

Inactive Publication Date: 2017-03-08
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 flux-cored welding wire for welding titanium-steel clad plates to solve the problem that titanium-steel clad plates cannot be welded butt joint

Method used

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  • Flux-cored wire for welding titanium-steel composite plate and preparation method of flux-cored wire
  • Flux-cored wire for welding titanium-steel composite plate and preparation method of flux-cored wire
  • Flux-cored wire for welding titanium-steel composite plate and preparation method of flux-cored wire

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preparation example Construction

[0030] The preparation method of the flux-cored welding wire for welding titanium-steel composite plate, the specific steps are as follows:

[0031] Step 1: Weigh 40%-60% V powder and 40%-60% Mo powder respectively by mass percentage, and the sum of the mass percentages of the above components is 100%;

[0032] Step 2: Put the V powder and Mo powder weighed in step 1 into a ball mill, and after ball milling for 8 hours to obtain a uniformly mixed drug core powder; heat it in a vacuum heating furnace at a heating temperature of 200°C and a holding time of 2 hours. Remove the water of crystallization in the powder;

[0033] Step 3: Wrap the uniformly mixed flux core powder in the copper tape through the flux cored wire making machine. The diameter of the first drawing abrasive tool is 2.6mm. Before the first process of drawing the flux cored wire, the copper tape is coated with acetone wipe clean;

[0034] Step 4: After the first process of drawing is completed, the aperture o...

Embodiment 1

[0037] Step 1: Weigh 50% V powder and 50% Mo powder respectively by mass percentage, and the sum of the mass percentages of the above components is 100%;

[0038] Step 2: Put the V powder and Mo powder weighed in step 1 into a ball mill, and ball mill for 8 hours to obtain a uniformly mixed drug core powder; put it in a vacuum heating furnace and add it, heating temperature 200 ° C, holding time 2 hours, the purpose is to remove Water of crystallization in medicinal powder;

[0039] Step 3: Wrap the evenly mixed drug powder in the copper tape through the flux-cored wire making machine. The diameter of the first drawing abrasive tool is 2.6mm. Before the first process of drawing the flux-cored wire, the copper tape is wiped clean with acetone ;

[0040] Step 4: After the first process of drawing is completed, the hole diameter of the abrasive tool is changed to 2.3mm, 2.0mm, 1.8mm, 1.6mm, 1.42mm, 1.34mm, 1.28mm, 1.24mm, and finally the flux cored wire is drawn to the diameter ...

Embodiment 2

[0045] Step 1: Weigh 60% V powder and 40% Mo powder respectively by mass percentage, and the sum of the mass percentages of the above components is 100%;

[0046] Step 2: Put the V powder and Mo powder weighed in step 1 into a ball mill, and ball mill for 8 hours to obtain a uniformly mixed drug core powder; put it in a vacuum heating furnace and add it, heating temperature 200 ° C, holding time 2 hours, the purpose is to remove Water of crystallization in medicinal powder;

[0047] Step 3: Wrap the mixed drug powder in the copper tape through the flux-cored wire making machine. The aperture of the first drawing abrasive tool is 2.6mm. Before the first process of drawing the flux-cored wire, the copper tape is wiped with acetone clean;

[0048] Step 4: After the first process of drawing is completed, the hole diameter of the abrasive tool is changed to 2.3mm, 2.0mm, 1.8mm, 1.6mm, 1.42mm, 1.34mm, 1.28mm, 1.24mm, and finally the flux cored wire is drawn to the diameter 1.2mm; ...

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Abstract

The invention discloses a flux-cored wire for welding a titanium-steel composite plate. The flux-cored wire comprises a flux core and a welding skin, wherein the flux core is prepared from the following components in percentage by mass: 40 to 60 percent of V powder and 40 to 60 percent of Mo powder; and the mass percentage sum of the above-mentioned components is 100 percent. A preparation method of the flux-cored wire comprises the following steps: uniformly mixing the V powder and the Mo powder to obtain mixed powder, drying the mixed powder, wrapping the powder with a copper belt, and drawing the copper belt wrapped powder to obtain the flux-cored wire. According to the flux-cored wire disclosed by the invention, a transitional layer is welded at a groove in the Ti side, and finally, a titanium layer is welded by a pure titanium wire, so that an obtained welding joint is high in toughness. The amount of alloy elements of the flux-cored wire is small, the preparation process is simple, and large-scale batch production can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of metal material welding, and in particular relates to a flux-cored welding wire used for welding titanium-steel composite plates, and also relates to a preparation method of the flux-cored welding wire. Background technique [0002] Titanium-steel composite plate is a new type of explosive bimetallic composite plate, which combines the strong corrosion resistance of titanium and the high strength and toughness of steel. Realizing its application on oil and gas transportation pipelines can not only solve the difficulty that a single pipeline steel pipeline is easily corroded, but also solve the high cost problem of using a single corrosion-resistant material to manufacture oil and gas transportation pipelines. However, due to the large difference in physical and chemical properties of titanium and steel, it is easy to form eutectics with low melting points and brittle compounds between Ti and Fe metals, mak...

Claims

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Application Information

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IPC IPC(8): B23K35/368B23K35/40
CPCB23K35/368B23K35/406
Inventor 张敏韩挺王晓伟张涛史杰慕二龙
Owner XIAN UNIV OF TECH
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