A kind of preparation method of aluminum alloy welding consumable ingot

A technology of aluminum alloy and welding consumables, which is applied in welding equipment, metal processing equipment, welding/cutting media/materials, etc., can solve the problems of welding consumables weldability and joint performance reduction, thickness, and difficulty in eliminating

Active Publication Date: 2022-04-19
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This wire contains Ti and melts Al at 700-730°C 3 Ti is easy to aggregate and thick, and it is difficult to eliminate in the subsequent extrusion or drawing process, resulting in a decrease in the weldability and joint performance of the welding consumables

Method used

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  • A kind of preparation method of aluminum alloy welding consumable ingot
  • A kind of preparation method of aluminum alloy welding consumable ingot
  • A kind of preparation method of aluminum alloy welding consumable ingot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The mass percentage of the aluminum alloy welding material in this example is Mg: 4.5%, Mn: 1%, Zn: 1.2%, Ti: 0.12%, Sc: 0.02%, Zr: 0.35%, Fe≤0.2%, Si≤0.15% , the balance being Al.

[0030] The ingot preparation process is as follows:

[0031] 1) Dosing according to the target ingredients, wherein Al purity ≥ 99.95%, Mg purity ≥ 99.98%, Zn purity ≥ 99.995%, Mn, Ti, Sc, Zr elements are respectively used Al-10% Mn, Al-10% Ti, Al -2% Sc, Al-5% Zr master alloy.

[0032]2) Use a resistance furnace for smelting, first put Al ingots and Al-10%Mn, Al-10%Ti intermediate alloys into the crucible, heat up to 680°C after all the alloys are melted, and use a titanium alloy bell jar to melt the Mg and Zn ingots Press into the bottom of the pool to melt and stir the melt until smooth.

[0033] 3) After continuing to heat up to 800°C, add Al-2%Sc and Al-5%Zr master alloys to the melt gradually to keep the melt temperature not lower than 800°C.

[0034] 4) After the master alloy is ...

Embodiment 2

[0038] The mass percentage of the aluminum alloy welding material in this example is Mg: 5.5%, Mn: 0.8%, Zn: 0.8%, Ti: 0.08%, Sc: 0.2%, Zr: 0.2%, Fe≤0.2%, Si≤0.15% , the balance being Al.

[0039] The ingot preparation process is as follows:

[0040] 1) Dosing according to the target ingredients, wherein Al purity ≥ 99.95%, Mg purity ≥ 99.98%, Zn purity ≥ 99.995%, Mn, Ti, Sc, Zr elements are respectively used Al-5% Mn, Al-10% Ti, Al -1% Sc, Al-5% Zr master alloy.

[0041] 2) Use an intermediate frequency furnace for smelting, first put Al ingots and Al-5%Mn, Al-10%Ti master alloys into the crucible, heat up to 700°C after all the alloys are melted, and use a titanium alloy bell jar to press the Mg and Zn ingots Put it into the bottom of the molten pool to melt it, and stir the melt evenly.

[0042] 3) Continue to raise the temperature to 820°C, add Al-1%Sc and Al-5%Zr master alloys gradually to the melt, and keep the melt temperature not lower than 820°C.

[0043] 4) After...

Embodiment 3

[0047] The mass percent of the aluminum alloy welding material in this example is: Mg: 7.5%, Mn: 0.1%, Zn: 0.2%, Ti: 0.01%, Sc: 0.6%, Zr: 0.02%, Fe≤0.2%, Si≤0.15 %, the balance is Al.

[0048] The ingot preparation process is as follows:

[0049] 1) Dosing according to the target ingredients, wherein Al purity ≥ 99.95%, Mg purity ≥ 99.98%, Zn purity ≥ 99.995%, Mn, Ti, Sc, Zr elements are respectively used Al-10% Mn, Al-5% Ti, Al -2% Sc, Al-5% Zr master alloy.

[0050] 2) Use an intermediate frequency furnace for smelting, first put Al ingots and Al-10%Mn, Al-5%Ti master alloys into the crucible, heat up to 720°C after all the alloys are melted, and use a titanium alloy bell jar to press the Mg and Zn ingots Put it into the bottom of the molten pool to melt it, and stir the melt evenly.

[0051] 3) Continue to raise the temperature to 850°C, add Al-2%Sc and Al-5%Zr master alloys gradually to the melt, and keep the melt temperature not lower than 850°C.

[0052] 4) After the...

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Abstract

The invention discloses a method for preparing an aluminum alloy welding material casting ingot. The welding material is composed of Mg: 4.5-7.5%, Mn: 0.1-1%, Zn: 0.2-1.2%, and Ti: 0.01-0.12%. , Sc: 0.02~0.6%, Zr: 0.02~0.35%, Fe≤0.2%, Si≤0.15%, and the balance is Al; it is characterized in that: the preparation of welding material ingot comprises the following steps: 1) according to the target composition ingredients. The melting and casting scheme of the present invention avoids the formation of a large amount of large-sized Al in the alloy melt by adopting the process route of gradually adding Al-Sc and Al-Zr master alloys under the condition that the melt temperature is greater than 800 ° C. 3 Sc, Al 3 Zr、Al 3 Ti, Al 3 (Sc, Zr), Al 3 (Sc, Zr, Ti) In the case of the primary phase, reduce the time for the primary phase to aggregate and grow in the melt below 800 °C.

Description

technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a method for preparing an aluminum alloy welding material casting ingot. Background technique [0002] Due to its abundant storage in the earth, aluminum alloy has a series of excellent characteristics. Aluminum alloy processed products have been widely used in the fields of machinery manufacturing, aerospace, weapons and ships. At the same time, aluminum alloy connection technology has also been greatly promoted with each passing day. . In addition to riveting, bolts and other methods for the connection of aluminum alloys in engineering applications, filler welding with welding materials is also an important connection method. The weldability of aluminum alloys and the comprehensive performance of welded joints have become important indicators for engineering application material selection. [0003] The weldability and joint performance of aluminum alloy mainly depe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/06C22C21/08C22C1/06C22B9/05B23K35/28
CPCC22C1/03C22C1/026C22C21/06C22C21/08C22C1/06C22B9/05B23K35/288
Inventor 郎玉婧周古昕毛华王生杜秀征李金宝乔丽韩峰
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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