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High-performance aluminum alloy automatic welding wire

An automatic welding and aluminum alloy technology, applied in welding media, welding equipment, metal processing equipment, etc., can solve the problems of welding seam pores, welding seam strength lower than the base metal, restricting the application of high-strength aluminum alloys, etc.

Active Publication Date: 2015-04-22
ZHEJIANG YUGUANG ALUMINUM MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, driven by the demand for "lightweight manufacturing" of high-speed rail and light rail trains, the application of high-strength aluminum alloys has become more and more widespread. However, the welding problems of high-strength aluminum alloys have not been well resolved, especially weld porosity. problems, weld cracks and weld strength lower than the base metal, seriously restricting the application of high-strength aluminum alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An aluminum alloy automatic welding wire, the chemical composition of which is: 0.01% Zr, 0.01% Sc, 0.06% Li, 0.01% Er 2 o 3 , 0.01% of Pr, 0.20% of Cr, 0.20% of Mn, 0.05% of Ti, 6.2% of Mg, the balance is Al, and the mechanical properties of the weld are excellent. Use a welding wire with a diameter of 2mm to weld a 5083 aluminum alloy test plate with a thickness of 10mm. The welding current is 280A, the welding arc voltage is 24V, the welding speed is 20m / h, and the argon gas flow rate is 22L / min. (L / min) , using MIG automatic butt welding single-pass welding, the tensile strength of the weld is 320MPa±40MPa. Use a welding wire with a diameter of 2mm to weld a 6N01 aluminum alloy test plate with a thickness of 10mm. The welding current is 280A, the welding arc voltage is 24V, the welding speed is 20m / h, and the argon gas flow rate is 22L / min. (L / min) , using MIG automatic butt welding single-pass welding, the tensile strength of the weld is 310MPa±35MPa.

Embodiment 2

[0023] An aluminum alloy automatic welding wire, its chemical composition is: 0.5% Zr, 0.5% Sc, 3.0% Li, 0.5% Er 2 o 3 , 0.5% of Pr, 0.05% of Cr, 0.05% of Mn, 0.25% of Ti, 4.5% of Mg, the balance is Al, and the mechanical properties of the weld are excellent. Use a welding wire with a diameter of 2mm to weld a 5083 aluminum alloy test plate with a thickness of 10mm. The welding current is 280A, the welding arc voltage is 24V, the welding speed is 20m / h, and the argon gas flow rate is 22L / min. (L / min) , using MIG automatic butt welding single-pass welding, the tensile strength of the weld is 320MPa±40MPa. Use a welding wire with a diameter of 2mm to weld a 6N01 aluminum alloy test plate with a thickness of 10mm. The welding current is 280A, the welding arc voltage is 24V, the welding speed is 20m / h, and the argon gas flow rate is 22L / min. (L / min) , using MIG automatic butt welding single-pass welding, the tensile strength of the weld is 310MPa±35MPa.

Embodiment 3

[0025] An aluminum alloy automatic welding wire, its chemical composition is: 0.1% Zr, 0.1% Sc, 0.6% Li, 0.1% Er 2 o 3 , 0.1% of Pr, 0.10% of Cr, 0.10% of Mn, 0.15% of Ti, 5.0% of Mg, the balance is Al, and the mechanical properties of the weld are excellent. Use a welding wire with a diameter of 2mm to weld a 5083 aluminum alloy test plate with a thickness of 10mm. The welding current is 280A, the welding arc voltage is 24V, the welding speed is 20m / h, and the argon gas flow rate is 22L / min. (L / min) , using MIG automatic butt welding single-pass welding, the tensile strength of the weld is 320MPa±40MPa. Use a welding wire with a diameter of 2mm to weld a 6N01 aluminum alloy test plate with a thickness of 10mm. The welding current is 280A, the welding arc voltage is 24V, the welding speed is 20m / h, and the argon gas flow rate is 22L / min. (L / min) , using MIG automatic butt welding single-pass welding, the tensile strength of the weld is 310MPa±35MPa.

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Abstract

The invention discloses a high-performance aluminum alloy automatic welding wire and belongs to a welding material of metal materials. Chemical components of the high-performance aluminum alloy automatic welding wire includes, by weight, 0.01%-0.5% of zirconium, 0.01%-0.5% of scandium, 0.06%-3.0% of lithium, 0.01%-0.5% of erbium oxide, 0.01%-0.5% of praseodymium, 0.05%-0.20% of chromium, 0.05%-0.20% of manganese, 0.05%-0.25% of titanium, 4.5%-6.2% of magnesium and the balance aluminum. Commercially available aluminum ingot, magnesium ingot, the erbium oxide, metal praseodymium, metal lithium, an aluminum zirconium alloy and an aluminum scandium alloy are utilized, a conventional smelting mode and a proportion based on design elements are utilized, and during smelting, a 'covering agent' and a 'degasifying agent' which are subjected to optimization and screening are added for smelting and continuous casting to obtain bar (wire) materials. By means of annealing, peeling and drawing, wire materials are obtained. After processes of cleaning and hanging side, welding wires used for automatically welding can be obtained. Besides, by means of the straightening and cutting, straight wires can be obtained. According to the high-performance aluminum alloy automatic welding wire, methods of a metal inert gas (MIG) welding, a tungsten inert gas (TIG) welding, a laser welding and a composite heat source welding can be used, and the high-performance aluminum alloy automatic welding wire is used for an automatic or semi-automatic welding of aluminum structural parts.

Description

technical field [0001] The invention belongs to welding materials of metal materials, in particular to an aluminum alloy automatic welding wire. Background technique [0002] At present, in the hardware industry, home appliance industry, refrigeration industry, and automobile industry, a large number of high-strength aluminum alloy structures are used. In recent years, driven by the demand for "lightweight manufacturing" of high-speed rail and light rail trains, the application of high-strength aluminum alloys has become more and more widespread. However, the welding problems of high-strength aluminum alloys have not been well resolved, especially weld porosity. problems, weld cracks, and weld strength lower than the base metal, seriously restricting the application of high-strength aluminum alloys. [0003] To solve the welding problem of high-strength aluminum alloy, one of the main ways is to choose a welding machine, and the other way is to develop and produce aluminum ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28
Inventor 林中强
Owner ZHEJIANG YUGUANG ALUMINUM MATERIALS