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Flux-cored wire for titanium-steel composite board dissimilar joint transition layer and manufacturing method of flux-cored wire

A composite plate and transition layer technology, applied in welding equipment, welding equipment, arc welding equipment, etc., can solve problems such as cracks and severe embrittlement of welds, achieve excellent strength and toughness, simple manufacturing process, and easy mass production. Effect

Inactive Publication Date: 2015-03-11
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a flux-cored welding wire for the transition layer of heterogeneous joints of titanium-steel composite plates, which solves the problem of severe embrittlement of the weld seam and even cracks when the existing titanium and steel are directly welded

Method used

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  • Flux-cored wire for titanium-steel composite board dissimilar joint transition layer and manufacturing method of flux-cored wire
  • Flux-cored wire for titanium-steel composite board dissimilar joint transition layer and manufacturing method of flux-cored wire
  • Flux-cored wire for titanium-steel composite board dissimilar joint transition layer and manufacturing method of flux-cored wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1, the particle size is 100 mesh, the chemical composition is V>99.9%, Fe<0.05%, Si<0.05%, Al<0.05%, N<0.04%, C<0.05%, H<0.01% vanadium powder, Dry it at 200°C for 2 hours;

[0032] Step 2, placing the copper strip with a purity of 99.99% and 10×0.4mm on the unwinding machine of the flux-cored wire production line, and cleaning the copper strip with an ultrasonic cleaner to remove oil and other harmful pollutants on the surface of the copper strip;

[0033] Step 3: Roll the red copper strip treated in step 2 into a U-shape by a welding wire forming machine, add the vanadium powder dried in step 1 to it, control the filling rate of vanadium powder to 25%, and then carry out 6-level rough drawing on the welding wire to a diameter of 2.6mm;

[0034] In step 4, the 2.6mm flux-cored welding wire is fine-drawn to a diameter of 1.2mm through 9 grades.

[0035] Copper-vanadium flux-cored welding wire prepared in Example 1 is used to weld titanium-steel (TA1-X80) composit...

Embodiment 2

[0038] Step 1, the particle size is 100 mesh, the chemical composition is V>99.9%, Fe<0.05%, Si<0.05%, Al<0.05%, N<0.04%, C<0.05%, H<0.01% vanadium powder, Dry it at 220°C for 2.5 hours;

[0039] Step 2, placing the copper strip with a purity of 99.99% and 10×0.4mm on the unwinding machine of the flux-cored wire production line, and cleaning the copper strip with an ultrasonic cleaner to remove oil and other harmful pollutants on the surface of the copper strip;

[0040] Step 3: Roll the red copper strip treated in step 2 into a U-shape by a welding wire forming machine, add the vanadium powder dried in step 1 to it, control the filling rate of vanadium powder to 27%, and then carry out 6-stage rough drawing on the welding wire to a diameter of 2.6mm;

[0041] In step 4, the flux-cored welding wire with a diameter of 2.6 mm is fine-drawn to a diameter of 1.2 mm through 9 grades.

[0042]Use the copper-vanadium flux-cored welding wire prepared in Example 2 to weld the titaniu...

Embodiment 3

[0045] Step 1, the particle size is 100 mesh, the chemical composition is V>99.9%, Fe<0.05%, Si<0.05%, Al<0.05%, N<0.04%, C<0.05%, H<0.01% vanadium powder, Dry it at 250°C for 3 hours;

[0046] Step 2, placing the copper strip with a purity of 99.99% and 10×0.4mm on the unwinding machine of the flux-cored wire production line, and cleaning the copper strip with an ultrasonic cleaner to remove oil and other harmful pollutants on the surface of the copper strip;

[0047] Step 3: Roll the red copper strip treated in step 2 into a U-shape by a welding wire forming machine, add the vanadium powder dried in step 1 to it, control the filling rate of vanadium powder to 30%, and then carry out 6-level rough drawing on the welding wire to a diameter of 2.6mm;

[0048] In step 4, the flux-cored welding wire with a diameter of 2.6 mm is fine-drawn to a diameter of 1.2 mm through 9 grades.

[0049] Use the copper-vanadium flux-cored welding wire prepared in Example 3, cooperate with tita...

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Abstract

A flux-cored wire for a titanium-steel composite board dissimilar joint transition layer comprises a welding wire skin and a flux core; the skin is a copper strip with the purity of 99.99 percent; the flux core is made of vanadium powder; chemical components of the flux core comprise more than 99.9% of V, less than 0.05% of Fe, less than 0.05% of Si, less than 0.05% of Al, less than 0.04% of N, less than 0.05% of C, and less than 0.01% of H; and the sum of the mass percents of the chemical components is 100 percent. The invention further discloses a manufacturing method of the flux-cored wire. The method comprises the steps that the copper strip processed in the step 2 is rolled into a U shape through a forming machine, the vanadium powder dried in the step 1 is added into the copper strip and the filling rate of the vanadium powder is controlled in the range of 25 percent to 30 percent; then, six-level rough drawing is carried out on a welding wire until the diameter of the wire is 2.6 mm; and nine-level fine drawing is carried out on the welding wire until the diameter of the wire is 1.2 mm. The flux-cored wire can achieve fusion welding abut joint of a titanium-steel composite board; an obtained welding joint has the excellent toughness; the components can be easily controlled; a manufacturing technology is simple; and large-scale mass production can be conveniently carried out.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a flux-cored welding wire for a transition layer of a heterogeneous joint of a titanium-steel composite plate, and also relates to a preparation method of the flux-cored welding wire. Background technique [0002] Titanium-steel composite plate is a composite material with steel plate as the base layer and titanium plate as the cladding layer. Titanium and its alloys are widely used in the production of various chemical reaction vessels, heat exchangers and other petrochemical and aerospace products due to their low density, heat resistance, and good corrosion resistance. However, the price of titanium and its alloys is relatively high, leading to an increase in the cost of its industrial products. On the premise of meeting the performance requirements of the product, how to reduce the cost of the product has always been the goal that people are striving for...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/32B23K35/40B23K9/16B23K9/173B23K101/18B23K103/18
CPCB23K35/302B23K35/0266B23K35/368B23K35/406B23K2103/24
Inventor 张敏刘明志张明李继红
Owner XIAN UNIV OF TECH
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