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Aluminum-magnesium-silicon-scandium-zirconium alloy wire, its preparation method and application

A technology of zirconium alloy and aluminum-magnesium-silicon, which is applied in the field of preparation of aluminum-magnesium-silicon-scandium-zirconium alloy wire, can solve the problem of high cost and achieve the effects of reduced production cost, high tensile strength and elongation, and low impurity content

Active Publication Date: 2021-05-07
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an aluminum-magnesium-silicon-scandium-zirconium alloy wire, its preparation method and application, so as to solve the problem that the existing aluminum-silicon-scandium alloy has better performance but higher cost

Method used

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preparation example Construction

[0019] As described in the background art, the existing aluminum-silicon-scandium alloy has better performance, but has the problem of higher cost. In order to solve the above technical problems, the present application provides a method for preparing aluminum magnesium silicon scandium zirconium alloy wire, the preparation method includes: melting the aluminum ingot to obtain the aluminum melt; making the aluminum melt and the first refining agent carry out the first Refining treatment to obtain the first refined aluminum liquid; performing the second refining treatment on the first refined aluminum liquid, magnesium agent, silicon agent, scandium agent, zirconium agent and the second refining agent to obtain the second refined aluminum liquid; The aluminum liquid is subjected to grain refinement treatment so that the second refined aluminum liquid includes 4.5-6% of Mg element, 0.2-0.5% of Si element, 0.15-0.4% of Fe element, 0.05-0.15% of Cu element, and 0.1-0.2% of Ti eleme...

Embodiment 1

[0032] The preparation process of the aluminum-magnesium-silicon-scandium-zirconium alloy wire of the present embodiment follows the steps below:

[0033] (1) First melt the pure aluminum ingot (the purity of aluminum element ≥ 99.9wt%), and add the first refining agent (NaNO 3 , KCl, MgCl 2 , the weight ratio of C is 7:6:6:1, and the percentage composition accounting for the melt is 0.3wt%) to carry out the first refining treatment, carry out the slag removal treatment after standing, and then evenly sprinkle on the surface of the aluminum melt Appropriate amount of covering agent (KCl, CaF 2 , MgCl 2 , MgF 2 The weight ratio is 7:10:68:15, accounting for 0.2wt% of the aluminum melt), and the dosage is preferably to cover the surface of the melt to obtain the first refined aluminum liquid;

[0034] (2) Add magnesium agent (magnesium ingot, magnesium element purity ≥ 99.9wt%), silicon agent (aluminum-silicon master alloy, silicon content 20wt%), and scandium agent to the a...

Embodiment 2

[0045] The preparation process of the aluminum-magnesium-silicon-scandium-zirconium alloy wire of the present embodiment follows the steps below:

[0046] (1) First melt the pure aluminum ingot (the purity of aluminum element ≥ 99.9wt%), and add the first refining agent (NaNO 3 , KCl, MgCl 2 , the weight ratio of C is 7:6:6:1, and the percentage composition accounting for the melt is 0.3wt%) to carry out the first refining treatment, carry out the slag removal treatment after standing, and then evenly sprinkle on the surface of the aluminum melt Appropriate amount of covering agent (KCl, CaF 2 , MgCl 2 , MgF 2 The weight ratio is 7:10:68:15, accounting for 0.2wt% of the aluminum melt), and the dosage is preferably to cover the surface of the melt to obtain the first refined aluminum liquid;

[0047] (2) Add magnesium agent (magnesium ingot, magnesium element purity ≥ 99.9wt%), silicon agent (aluminum-silicon master alloy, silicon content 20wt%), and scandium agent to the a...

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Abstract

The invention provides an aluminum-magnesium-silicon-scandium-zirconium alloy wire, a preparation method and application thereof. The preparation method comprises: melting an aluminum ingot to obtain molten aluminum, and undergoing first refining treatment, second refining treatment and grain refinement treatment, so that the second refined aluminum solution includes 4.5% to 6% of Mg element, Si element 0.2~0.5%, Fe element 0.15~0.4%, Cu element 0.05~0.15%, Ti element 0.1~0.2%, Mn element 0.05~0.2%, Sc element 0.05~0.2%, Zr element 0.05~0.6%, the balance is Al element; then perform online degassing, slag removal, casting, rolling, annealing, drawing and annealing in sequence to obtain aluminum magnesium silicon scandium zirconium alloy wire. The aluminum-magnesium-silicon-scandium-zirconium alloy wire has the advantages of low preparation cost, high tensile strength and high elongation.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an aluminum-magnesium-silicon-scandium-zirconium alloy wire, a preparation method and application thereof. Background technique [0002] The aluminum alloy car body of the high-speed train is a welded structural part with large flat, wide and thin-walled aluminum alloy profiles as the skeleton. Welding can reduce the vehicle manufacturing workload by 40%, thereby reducing the vehicle manufacturing cost. The development of welding wire for high-performance aluminum profiles is the guarantee for aluminum profile welding. At present, high-performance aluminum-magnesium-silicon alloy welding wires for rail transit mainly rely on imports. Therefore, developing a new preparation process for aluminum-magnesium-silicon alloy welding wires and continuously improving the quality of domestic aluminum welding wires has become a key task in the research and development of welding wire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/08C22F1/047B23K35/28
CPCB23K35/286C22C1/026C22C1/03C22C1/06C22C21/08C22F1/047
Inventor 李诺韩国强王玮玮杜尚超付云枫姚心孙宁磊
Owner CHINA ENFI ENGINEERING CORPORATION