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A kind of aluminum alloy welding wire containing nano-alumina particles and preparation method thereof

A technology of aluminum alloy welding wire and nano-alumina, which is applied in the field of aluminum alloy welding wire, can solve problems such as weld thermal cracking, low weld strength, and poor weld stability, so as to improve weld strength, realize weld strength, The effect of thermal stability improvement

Active Publication Date: 2020-05-19
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of aluminum alloy welding wire containing nano-alumina particle and preparation method thereof, this aluminum alloy welding wire containing nano-alumina particle is a kind of containing nano-alumina particle Al-Zn-Mg-Cu-Zr- Ti-Ag-Sc-Er aluminum alloy welding wire is specially used for welding 7XXX high-strength aluminum alloys to solve the problems of weld thermal cracking, poor weld stability and low weld strength during the welding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] An aluminum alloy welding wire containing nano-alumina particles, the components it contains and the mass percentage of each component are: n-Al2 o 3 (nano alumina) content 0.1%, Zn content 12%, Mg content 4.0%, Cu content 0.2%, Zr content 0.2%, Ag content 1.1%, Sc content 0.23%, Ti content 0.36%, Er content 0.4%, The content of other impurity elements is Fe≤0.15%, Si≤0.06%, and the balance is Al.

[0044] The n-Al 2 o 3 (Nano-alumina) Copper-plated nano-Al 2 o 3 , and its particle size is 10-15nm.

[0045] A method for preparing an aluminum alloy welding wire containing nano-alumina particles, the process is as follows:

[0046] Step 1: Low Frequency Semi-Continuous Casting

[0047] 1) According to the above alloy chemical composition and weight percentage requirements, raw materials include: pure Al, n-Al 2 o 3 (nano-alumina), pure Zn, pure Mg, Al-Cu master alloy, Al-Ti-B master alloy, Al-Er master alloy, industrial pure Ag, Al-Sc master alloy, Al-Zr master al...

Embodiment 2

[0066] An aluminum alloy welding wire containing nano-alumina particles, the components it contains and the mass percentage of each component are: n-Al 2 o 3 (nano alumina) content 0.5%, Zn content 10.5%, Mg content 4.0%, Cu content 0.4%, Zr content 0.3%, Ag content 1.2%, Sc content 0.3%, Ti content 0.2%, Er content 0.14%, The content of other impurity elements is Fe≤0.15%, Si≤0.06%, and the balance is Al.

[0067] The n-Al 2 o 3 (Nano-alumina) Copper-plated nano-Al 2 o 3 , and its particle size is 20-23nm.

[0068] A preparation method of an aluminum alloy welding wire containing nano-alumina particles, comprising the following steps:

[0069] Step 1: Low Frequency Semi-Continuous Casting

[0070] 1) Ingredients: According to the above alloy chemical composition and weight percentage requirements, the raw materials and the mass percentage of each raw material are: n-Al 2 o 3 (nano alumina) content 0.5%, Zn content 10.5%, Mg content 4.0%, Cu content 0.4%, Zr content 0...

Embodiment 3

[0089] An aluminum alloy welding wire containing nano-alumina particles, the components it contains and the mass percentage of each component are: n-Al 2 o 3 (nano alumina) content 1%, Zn content 11%, Mg content 4.2%, Cu content 0.3%, Zr content 0.4%, Ag content 1.6%, Sc content 0.35%, Ti content 0.25%, Er content 0.24%, The content of impurity elements is Fe≤0.15%, Si≤0.06%, and the balance is Al.

[0090] The n-Al 2 o 3 (Nano-alumina) Copper-plated nano-Al 2 o 3 , and its particle size is 25-30nm.

[0091] A preparation method of an aluminum alloy welding wire containing nano-alumina particles, comprising the following steps:

[0092]Step 1: Low Frequency Semi-Continuous Casting

[0093] 1) Ingredients: According to the above alloy chemical composition and weight percentage requirements, the raw materials and the mass percentage of each raw material are: n-Al 2 o 3 (nano alumina) content 1%, Zn content 11%, Mg content 4.2%, Cu content 0.3%, Zr content 0.4%, Ag conte...

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Abstract

An aluminum alloy welding wire containing nano-alumina particles and a preparation method thereof belong to the technical field of aluminum alloy welding wires. The components and mass percentages contained in this welding wire are: Nano-Al 2 O 3 0.1 to 1%, Zn is 10 to 12%, Mg is 4.0 to 4.4%, Cu is 0.2 to 0.4%, Zr is 0.2 to 0.4%, Ag is 1.0 to 2.0%, Sc is 0.2 to 0.4%, and Ti is 0.2~0.4%, Er is 0.1~0.4%, Fe≤0.15%, Si≤0.06%, and the balance is Al; the diameter of the welding wire is 1.2mm~3.0mm. The preparation method is: low-frequency semi-continuous casting, annealing, homogenization treatment, extrusion and drawing. This welding wire is specially used for welding 7XXX high-strength aluminum alloy to solve the problems of thermal cracking of welds, poor weld stability and low weld strength caused during the welding process. The welding wire preparation process is simple and operable, has low production cost, is suitable for industrial production, and has broad market prospects.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy welding wire, in particular to an aluminum alloy welding wire containing nano-alumina particles and a preparation method thereof. Background technique [0002] The use of high-strength aluminum alloys instead of steel materials for weight reduction not only has an outstanding weight reduction effect, but also has unparalleled advantages in terms of cost compared with titanium alloys and composite materials. Therefore, more and more high-strength aluminum alloy structural materials are widely used instead of steel products in military and civilian fields such as aviation, aerospace and other weapons and equipment, and high-speed train tracks. The connection mode between aluminum alloy parts is changed from mechanical connection to welding seam connection. At present, the high-strength aluminum alloy plates that use aluminum instead of steel are mostly Al-Zn-Mg-Cu alloys, and their welding p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28C22C21/10C22C1/03C22C1/10C22F1/053B23K35/40
CPCB23K35/288B23K35/40C22C1/1036C22C21/10C22F1/053
Inventor 高文林王向杰班春燕崔建忠
Owner NORTHEASTERN UNIV LIAONING
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