Soldering wire for high-strength aluminum copper alloy

A technology of aluminum-copper alloy and welding wire, which is applied in the field of material science and engineering, can solve the problems of high weld porosity sensitivity, poor low-temperature performance, and lag in the application of high-strength aluminum-copper alloys, and achieve excellent joint performance and weld porosity sensitivity small effect

Active Publication Date: 2008-05-14
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of high-strength aluminum-copper alloys in China is relatively lagging behind. In recent years, with the development of the aerospace industry, the application of high-strength aluminum-copper alloys has been put on the agenda. However, the application of high-strength aluminum-copper alloys is inseparable from welding technology. Problems in the development of matching welding wire
The same kind of high-strength aluminum-copper alloys in foreign countries hav

Method used

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  • Soldering wire for high-strength aluminum copper alloy
  • Soldering wire for high-strength aluminum copper alloy
  • Soldering wire for high-strength aluminum copper alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] According to the formula, aluminum ingots are refined by traditional smelting technology, and then extruded and drawn into welding wire. The chemical composition of the welding wire is:

[0012] Al-6.2, Cu-0.32, Mn-0.1, Cr-0.12, Ti-0.15, Zr-0.1, V.

[0013] The welding wire made of the above chemical composition is used to weld the high-strength aluminum-copper alloy base metal, including welding crack sensitivity test, weld porosity sensitivity test, and joint mechanical performance test. Simultaneously compare American aluminum-copper welding wire, domestic aluminum-copper welding wire and welding wire of the present invention. The result is as follows:

[0014] (1) Welding crack sensitivity is better than that of domestic aluminum-copper welding wire and American aluminum-copper welding wire, see Table 1.

[0015] Table 1 Weld crack sensitivity

[0016]

[0017] (2) The porosity sensitivity of the weld is equivalent to that of domestic aluminum-copper welding w...

Embodiment 2

[0024] According to the formula, aluminum ingots are refined by traditional smelting technology, and then extruded and drawn into welding wire. The chemical composition of the welding wire is:

[0025] Al-6.7, Cu-0.38, Mn-0.1, Cr-0.12, Ti-0.1, Zr-0.08, V.

[0026] The welding wire made of the above chemical composition is used to weld the high-strength aluminum-copper alloy base metal, including welding crack sensitivity test, weld porosity sensitivity test, and joint mechanical performance test. Simultaneously compare the aluminum-copper welding wire produced in the United States, the domestic aluminum-copper welding wire and the welding wire of the present invention. The result is as follows:

[0027] (1) Welding crack sensitivity is better than that of domestic aluminum-copper welding wire and American aluminum-copper welding wire, see Table 4.

[0028] Table 4 Welding Crack Sensitivity

[0029]

[0030] (2) The porosity sensitivity of the weld is equivalent to that o...

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Abstract

The invention belongs to the field of material science and engineering, and its chemical composition is as follows: (wt%): Cu 5.8~6.8, Mn 0.2~0.4, Ti 0.05~0.2, Zr 0.05~0.25, V 0.01~0.20, Cr 0.01~0.25, Fe 0.15, Si 0.08, Zn 0.05, Mg 0.02, and the balance is Al; the welding wire is refined by traditional melting and casting process according to the formula. The invention satisfies the manufacturing problem of high-strength aluminum-copper alloy matched welding wire by controlling the components. The welding wire of the invention has low sensitivity to welding cracks, small weld seam porosity sensitivity, and excellent joint mechanical properties.

Description

technical field [0001] The invention relates to a new welding material, which belongs to the field of material science and engineering. Background technique [0002] High-strength aluminum-copper alloys are widely used in the aerospace industry. They are the preferred materials for aircraft fuel tanks and rocket storage tanks. Similar materials abroad have been widely used in the manufacture of aircraft fuel tanks and rocket storage tanks. The application of domestic high-strength aluminum-copper alloys is relatively lagging behind. In recent years, with the development of the aerospace industry, the application of high-strength aluminum-copper alloys has been put on the agenda. However, the application of high-strength aluminum-copper alloys is inseparable from welding technology. With the development of welding wire. The same kind of high-strength aluminum-copper alloys in foreign countries have matured matching welding wires-aluminum-copper series welding wires, which ha...

Claims

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Application Information

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IPC IPC(8): B23K35/28
Inventor 焦好军
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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