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Al-Mn-Si-Mg alloy material and preparation method thereof

An alloy material and preparation method technology, applied in the field of metal materials and metallurgy, can solve the problems of difficult reuse of composite strip waste, easy to exceed the impurity content, difficult to control alloy composition, etc., and achieve good application prospects, excellent product performance, and lightening. the effect of destruction

Active Publication Date: 2018-07-20
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Since the components of Mn, Si, Fe, and Zn in the remelting material are relatively high, this material is not suitable for producing any known brand of aluminum alloy; it is difficult to control the alloy composition by using this waste material to produce aluminum alloy; Even if the amount of this waste is high, the impurity content can easily exceed the standard; this makes it difficult to reuse this composite strip waste

Method used

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  • Al-Mn-Si-Mg alloy material and preparation method thereof
  • Al-Mn-Si-Mg alloy material and preparation method thereof
  • Al-Mn-Si-Mg alloy material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Dry the waste produced in the production process of the composite strip to remove moisture, and then smelt it to form a waste melt; control its composition by weight percentage to contain Mn 1.35%, Si 1.35%, Fe≤0.8%, Mg 1.35%, Cu 0.25%, Cr0 .35%, Zn 0.45%, Ti 0.15%, the balance is Al, wherein the impurity content is ≤1.0%; control the melting temperature to 750°C, after all the materials are melted, stir evenly to obtain aluminum alloy melt;

[0037] Use a rotary blowing device to blow the refining agent into the aluminum alloy melt for refining treatment. The refining agent is Promag granular refining agent. Pouring after slag removal, on-line degassing and on-line addition of grain refiner during the pouring process, filtering and pouring into round rods through ceramic plates;

[0038] Put the round bar into the homogenization furnace for homogenization treatment, the temperature is 530°C, and the time is 16h;

[0039]Preheat the round bar after homogenization treat...

Embodiment 2

[0042] Method is with embodiment 1, and difference is:

[0043] (1) Use waste materials to account for 80% of the total weight of all raw materials, add aluminum ingots and master alloys to the waste material melt, and the melt control components contain Mn 1.18%, Si 1.05%, Fe≤0.8%, Mg 1.2% by weight percentage , Cu 0.25%, Cr0.28%, Zn0.36%, Ti 0.15%; melting temperature is 745°C;

[0044] (2) The amount of refining agent is 0.25% of the total weight of the aluminum alloy melt; after the refining treatment, it is left to stand for 35 minutes, filtered and cast into a round rod through a ceramic plate;

[0045] (3) Homogenization treatment temperature 520°C, time 24h;

[0046] (4) Extrude the homogenized round bar after preheating, and quench it online; then age at 150°C for 24 hours, and finally obtain the Al-Mn-Si-Mg alloy profile;

[0047] (5) The T6 tensile strength of the product is 309MPa, and the elongation is 7.8%.

Embodiment 3

[0049] Method is with embodiment 1, and difference is:

[0050] (1) Use waste materials to account for 80% of the total weight of all raw materials, add aluminum ingots and master alloys to the waste material melt, and the melt control components contain Mn 1.15%, Si 1.02%, Fe≤0.8%, Mg 0.9% by weight percentage , Cu 0.2%, Cr0.25%, Zn 0.35%, Ti 0.12%; the melting temperature is 740°C;

[0051] (2) The amount of refining agent is 0.2% of the total weight of the aluminum alloy melt; after the refining treatment, let it stand for 30 minutes, filter and cast it into a flat ingot through a ceramic plate;

[0052] (3) Homogenization treatment temperature 550°C, time 12h;

[0053] (4) Remove the skin of the slab after the homogenization treatment, and roll it into a plate; the plate is first solution treated at 520° C. for 3 hours, and then aged at 150° C. for 24 hours; finally, an Al-Mn-Si-Mg alloy plate is obtained;

[0054] (5) The T6 tensile strength of the product is 305MPa, an...

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Abstract

The invention discloses an Al-Mn-Si-Mg alloy material and a preparation method thereof. The Al-Mn-Si-Mg alloy material comprises the following components in percentage by weight: 0.6-1.5% of Mn, 0.7-1.5% of Si, 0.1-0.8% of Fe, 0.5-1.5% of Mg, 0-0.5% of Cu, 0-0.5% of Cr, 0.1-0.5% of Zn, 0.09-0.15% of Ti, and the balance of Al. The method comprises the following steps: (1) wastes generated in the composite strip production process are smelted to control components; (2) refining is performed; slagging and pouring are performed after standing; online degassing and online adding of a grain refiningagent are performed; and a ceramic plate is filtered and poured as a round bar or cast as a flat ingot; (3) uniform treatment is performed; (4) the flat ingot is rolled as a plate after uniform treatment; and aging is performed after solid solution treatment; and (5) the round rod is preheated to extrude as a profile after uniform treatment, is aged after online quenching, or is aged after solidsolution treatment. The method can recycle composite strip wastes; and prepared products are excellent in performance and application prospect.

Description

technical field [0001] The invention belongs to the technical field of metal materials and metallurgy, and in particular relates to an Al-Mn-Si-Mg alloy material and a preparation method thereof. Background technique [0002] The aluminum alloy brazing strip with sandwich structure has the advantages of light weight, corrosion resistance, good brazing performance, and reliable performance. It is widely used in automotive heat exchangers, such as automotive water tank radiators, automotive air-conditioning condenser evaporators, etc. One of the key materials of aluminum heat exchangers for automobiles; the core material of aluminum alloy composite brazing strip is generally Al-Mn alloy (such as 3003 alloy), and the double-sided cladding material is generally Al-Si series brazing alloy (such as 4045 alloy ). Or one cladding material is an Al-Si based brazing alloy, and the other cladding material is a sacrificial anode alloy, generally an Al-Zn alloy (such as 7022 alloy). ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/02C22C21/08C22C1/03C22F1/04C22F1/043C22F1/047
CPCC22C1/026C22C1/03C22C21/00C22C21/02C22C21/08C22F1/04C22F1/043C22F1/047
Inventor 刘玉林毕常兰张利赵玉华王继杰刘春忠国旭明
Owner SHENYANG AEROSPACE UNIVERSITY
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