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Welding wire for butt welding of thick multi-layer copper-steel composite board and preparation and welding method

A welding method and composite plate technology, applied in welding equipment, welding media, welding accessories, etc., can solve problems such as joint cracking and poor welding seam formation, and achieve the advantages of reducing preheating time, reducing production cost and reducing impact. Effect

Active Publication Date: 2022-01-28
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The first object of the present invention is to provide a welding wire for butt welding of thick clad copper-steel clad plates, which is used to solve the problem of butt welding of copper-steel clad plates Poor weld formation and joint cracking problems during the process

Method used

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  • Welding wire for butt welding of thick multi-layer copper-steel composite board and preparation and welding method
  • Welding wire for butt welding of thick multi-layer copper-steel composite board and preparation and welding method
  • Welding wire for butt welding of thick multi-layer copper-steel composite board and preparation and welding method

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preparation example Construction

[0044] The present invention also provides a preparation method of welding wire for butt welding of thick clad copper-steel clad plates, the specific steps are as follows:

[0045] Step 1: Take the following medicinal powders by mass percentage: 60-70% of Ni powder, 10-20% of Mn powder, 10-20% of Zn powder, 5-10% of Al powder, the sum of the mass percentages of the above components is 100% ; In step 1, the particle size of each medicinal powder is 200-300 mesh; the purity of the powder is ≥99.90%.

[0046] Step 2: Heat each powder weighed in step 1 in a vacuum heating furnace at a heating temperature of 200-230°C and a holding time of 1-3 hours to remove the crystal water in the powder; place the dried powder in a mixing powder Fully mix in the machine, the mixing time is 1~3h;

[0047] Step 3: Use pure copper strip as the solder skin, use alcohol to remove the grease on the surface of the pure copper strip, and wrap the powder prepared in step 2 in the pure copper strip thro...

Embodiment 1

[0053] Step 1: take by weight the following powders respectively by mass percentage: Ni powder 60%, Mn powder 10%, Zn powder 20%, Al powder 10%, the sum of above component mass percentage is 100%; In step 1, each powder The particle size is 200 mesh; the purity of the powder is ≥99.90%.

[0054] Step 2: Put the powder weighed in step 1 into a vacuum heating furnace for heating at a temperature of 200°C and a holding time of 1 hour to remove the crystal water in the powder; place the dried powder in a powder mixer Carry out sufficient mixing, the mixing time is 1h;

[0055] Step 3: Use pure copper strip as the solder skin, use alcohol to remove the grease on the surface of the pure copper strip, and wrap the powder prepared in step 2 in the pure copper strip through the flux-cored wire drawing equipment. The first drawing die has an aperture of 2.6 mm; in step 3, the pure copper strip has a thickness of 0.3mm and a width of 7mm, and the filling amount of the flux core powder i...

Embodiment 2

[0061] Step 1: take by weight the following medicated powders respectively by mass percentage: Ni powder 70%, Mn powder 15%, Zn powder 10%, Al powder 5%, the sum of above component mass percentages is 100%; In step 1, each medicated powder The particle size is 300 mesh; the purity of the powder is ≥99.90%.

[0062] Step 2: Put the powder weighed in step 1 into a vacuum heating furnace for heating at a temperature of 230°C and a holding time of 3 hours to remove the crystal water in the powder; place the dried powder in a powder mixer Carry out sufficient mixing, the mixing time is 3h;

[0063] Step 3: Use pure copper strip as the solder skin, use alcohol to remove the grease on the surface of the pure copper strip, and wrap the powder prepared in step 2 in the pure copper strip through the flux-cored wire drawing equipment. The first drawing die has an aperture of 2.6 mm; in step 3, the pure copper strip has a thickness of 0.3mm and a width of 7mm, and the filling amount of t...

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Abstract

The invention discloses a welding wire for butt welding of a thick multi-layer copper-steel composite board, which is characterized by comprising a flux core and a welding skin. The flux core comprises the following components in percentage by mass: 60-70% of Ni powder, 10-20% of Mn powder, 10-20% of Zn powder and 5-10% of Al powder, and the sum of the mass percentages of the components is 100%. The welding wire is used for solving the problems that in the butt welding process of the copper-steel explosion composite board, welding seam forming is poor, and a connector cracks. The invention further discloses a preparation method of the welding wire for butt welding of the thick multi-layer copper-steel composite board and a welding method of the thick multi-layer copper-steel composite board.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a welding wire for butt welding of thick multilayer copper-steel composite plates, and also relates to a preparation method of welding wire for butt welding of thick multilayer copper-steel composite plates and a thick multilayer copper welding wire. - Welding methods for steel clad panels. Background technique [0002] Copper alloy has excellent electrical and thermal conductivity; low-carbon steel has the advantages of excellent strength and toughness matching and low cost. Combining copper and steel together to prepare copper-steel composite panels has both excellent properties and meets the needs of modern industrial development. Butt welding of copper-steel composite panels is unavoidable during engineering application. Although it can be seen from the copper-steel binary phase diagram that copper and steel do not form brittle intermetallic compounds, due to the ...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/362B23K9/32
CPCB23K35/302B23K35/362B23K35/0266B23K9/32
Inventor 褚巧玲曹齐鲁李毅张敏赵鹏康李继红王锵
Owner XIAN UNIV OF TECH
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