Flux-cored wire and method capable of enhancing copper/steel interface bonding strength

A technology of interfacial bonding strength and flux-cored wire, applied in the direction of welding/welding/cutting items, welding media, welding equipment, etc., can solve problems such as joint failure, poor quality of welded joints, and great differences in physical properties, etc., to achieve fine Surface grain, grain refinement, and effect of improving residual stress

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

This structure is usually formed by welding, but the physical properties of the two materials are very different, and the quality of the welded joint is poor, and it is easy to fail at the joint

Method used

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  • Flux-cored wire and method capable of enhancing copper/steel interface bonding strength

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Step 1, respectively weigh the following powders: Mg powder: 10g; Ti powder: 10g; Co powder: 5g; Ni powder: 20g; Si powder: 1g; Mn powder: 1g; Cu powder: 53g. The sum of the mass percentages of the above components is 100%.

[0042] Step 2: Use the powder weighed in step 1 as the core, fill the core into the U-shaped groove, use the pure copper strip as the welding wire skin, and use the aperture Complete the first drawing process for the 2.3mm diameter reducing die, and finally reduce the diameter of the flux-cored welding wire to 1.6mm through the reducing die continuously; use the wire drawing machine to make the required welding wire, and store the welding wire in the incubator after the preparation is completed ; The filling rate of the flux core powder in the flux cored wire is 25wt.%.

[0043] Step 3: TIG welding is used to weld T2 copper and Q345A steel plates, and the filler metal uses the flux-cored wire prepared in step 2; welding parameters are, welding vo...

Embodiment 2

[0048] Step 1, respectively weigh the following powders: Mg powder: 10g; Ti powder: 15g; Co powder: 7g; Ni powder: 20g; Si powder: 1g; Mn powder: 1g; Cu powder: 46g. The sum of the mass percentages of the above components is 100%.

[0049]Step 2: Use the powder weighed in step 1 as the core, fill the core into the U-shaped groove, use the pure copper strip as the welding wire skin, and use the aperture Complete the first drawing process for the 2.3mm diameter reducing die, and finally reduce the diameter of the flux-cored welding wire to 1.6mm through the reducing die continuously; use the wire drawing machine to make the required welding wire, and store the welding wire in the incubator after the preparation is completed ; The filling rate of the flux core powder in the flux cored wire is 32wt.%.

[0050] Step 3: TIG welding is used to weld T2 copper and Q345A steel plates, and the filler metal uses the flux-cored wire prepared in step 2; welding parameters are, welding vol...

Embodiment 3

[0055] Step 1, respectively weigh the following powders: Mg powder: 15g; Ti powder: 10g; Co powder: 5g; Ni powder: 20g; Si powder: 1g; Mn powder: 1g; Cu powder: 48g. The sum of the mass percentages of the above components is 100%.

[0056] Step 2: Use the powder weighed in step 1 as the core, fill the core into the U-shaped groove, use the pure copper strip as the welding wire skin, and use the aperture Complete the first drawing process for the 2.3mm diameter reducing die, and finally reduce the diameter of the flux-cored welding wire to 1.6mm through the reducing die continuously; use the wire drawing machine to make the required welding wire, and store the welding wire in the incubator after the preparation is completed ; The filling rate of the flux core powder in the flux cored wire is 26wt.%.

[0057] Step 3: TIG welding is used to weld T2 copper and Q345A steel plates, and the filler metal uses the flux-cored wire prepared in step 2; welding parameters are, welding vo...

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Abstract

The flux-cored wire capable of enhancing the copper / steel interface bonding strength comprises a flux core and a welding skin, and the flux core is composed of, by mass, 10-15% of Mg powder, 10-15% of Cu powder, 10-15% of Ni powder, 10-15% of Ni powder and the balance Fe powder. 10%-15% of Ti powder; 5 to 7 percent of Co powder; 20% of Ni powder; 1% of Si powder; 1-2% of Mn powder; the sum of the mass percentages of the components is 100%. The welding wire is used for improving the copper / steel interface bonding strength and improving the impact resistance of a copper / steel composite structural part. The invention further discloses a method capable of enhancing the copper / steel interface bonding strength.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a flux-cored welding wire capable of enhancing the bonding strength of the copper / steel interface, and also relates to a method capable of enhancing the bonding strength of the copper / steel interface. Background technique [0002] Copper alloys have good electrical conductivity, thermal conductivity and corrosion resistance, but because copper itself is soft, it cannot work under high loads, so the appearance of copper / steel composite materials makes up for this shortcoming. Copper / steel composite materials Widely used in electrical equipment, aviation equipment. This structure is usually formed by welding, but the physical properties of the two materials are very different, and the quality of the welded joint is poor, and it is easy to fail at the joint. [0003] With the continuous promotion of the application field, due to the low bonding strength of copper / steel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/30B23K35/40B23K9/095B23K9/16B23K103/22
Inventor 张敏张志强杜明科雷龙宇王新宝刘智博
Owner XIAN UNIV OF TECH
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