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7050 alloy ingot casting material and preparation method thereof

An alloy ingot and alloy material technology, which is applied in the field of 7050 alloy material and ingot preparation, can solve the problems of low production efficiency, difficult casting of 7050, and high casting cost of large-size slabs, so as to reduce costs and reduce defective rates. , cooling effect uniform effect

Pending Publication Date: 2022-03-25
DALISHEN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems of high difficulty in casting 7050, high casting cost of large-scale slabs, and low production efficiency, and provide a 7050 alloy material and its ingot preparation method. The alloy belongs to high-strength and high-toughness aluminum alloy

Method used

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  • 7050 alloy ingot casting material and preparation method thereof
  • 7050 alloy ingot casting material and preparation method thereof
  • 7050 alloy ingot casting material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0051] A low-cost large-scale 7050 alloy material, its chemical elements and their mass percentages are as follows:

[0052] Si ≤ 0.12wt%, Fe ≤ 0.15wt%, Cu 2.0wt% ~ 2.6wt%, Mn ≤ 0.10wt%, Mg 1.9wt% ~ 2.6wt%, Cr ≤ 0.04wt%, Zn 5.7wt% ~ 6.7 wt%, Ti≤0.06wt%, Zr0.09wt%~0.14wt%, Be 0.0005~0.02%, the balance is aluminum and unavoidable impurities.

[0053] Concrete material preparation method comprises the following steps:

[0054] Step 1, batching; use 99.7% and 99.85% aluminum ingots, zinc ingots, metal magnesium ingots, aluminum-zirconium alloys, and titanium agents, and determine the above-mentioned feeding amount according to the internal control chemical composition and the specifications and quantities of the ingots, at 0.25kg / ton Aluminum is added to aluminum beryllium alloy.

[0055] Step 2, smelting: After completing the above calculation steps, add aluminum ingots and titanium agents to the smelting furnace, wait until the metal is completely melted, and when the metal te...

Embodiment 2

[0067] A low-cost large-scale 7050 alloy material, its chemical elements and their mass percentages are as follows:

[0068] Si ≤ 0.12wt%, Fe ≤ 0.15wt%, Cu 2.0wt% ~ 2.6wt%, Mn ≤ 0.10wt%, Mg 1.9wt% ~ 2.6wt%, Cr ≤ 0.04wt%, Zn 5.7wt% ~ 6.7 wt%, Ti≤0.06wt%, Zr0.09wt%~0.14wt%, Be 0.0005~0.02%, the balance is aluminum and unavoidable impurities.

[0069] Ingredients: use 99.7% and 99.85% aluminum ingots, zinc ingots, metal magnesium ingots, aluminum-zirconium alloys, and titanium agents. The above-mentioned feeding amount is determined according to the internal control chemical composition and the specifications and quantities of ingots. Add aluminum at 0.25kg / ton Aluminum beryllium alloy.

[0070] Melting: After completing the above calculation steps, add aluminum ingots and titanium agents to the melting furnace, and start slag removal when the metal is completely melted and the metal temperature reaches 740-760°C, then add zinc ingots, metal magnesium ingots, and aluminum-zircon...

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Abstract

The invention relates to the technical field of aluminum alloy preparation, in particular to a 7050 alloy material and a cast ingot preparation method thereof, the material comprises the following chemical elements in percentage by mass: less than or equal to 0.12% of Si, less than or equal to 0.15% of Fe, 2.0%-2.6% of Cu, less than or equal to 0.10% of Mn, 1.9%-2.6% of Mg, less than or equal to 0.04% of Cr, 5.7%-6.7% of Zn, less than or equal to 0.06% of Ti, 0.09%-0.14% of Zr, 0.0005%-0.02% of Be and the balance of aluminum and inevitable impurities, and the specific preparation steps are as follows: step 1, burdening; 3, casting: sticking fiber paper on a crystallizer base by using a common casting machine, uniformly cooling the strength, and casting the smelted substance into a cast ingot; (4) soaking: carrying out uniform post-treatment on the cast ingot; step 5, saw cutting; 6, surface milling is conducted, specifically, surface milling is conducted on the cast ingot subjected to uniform treatment; according to the invention, the material and equipment cost can be reduced, impurities in the melt can be removed, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy preparation, in particular to a 7050 alloy material and an ingot preparation method thereof. Background technique [0002] 7075 aluminum alloy has a compact structure and strong corrosion resistance. It is the best for aviation and marine plates. With the rapid development of the aerospace industry, the demand for 7050 alloy is increasing. However, 7050 high-strength and high-toughness aluminum alloy is difficult to form. The problem of poor internal metallurgy, the products produced according to the traditional technology can not meet the technical requirements. [0003] Chinese patent: a high-performance Al-Zn-Mg-Cu alloy, patent authorization number: CN 113481416 A, patent authorization date: October 8, 2021, the preparation of the mentioned alloy can produce more A product with high comprehensive performance. The product has the characteristics of high strength, high toughness, high ha...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C1/03C22F1/053B22D11/00B22D11/055C22B9/05B22D11/117
CPCC22C21/10C22C1/026C22C1/03C22F1/053B22D11/003B22D11/055C22B9/05B22D11/117
Inventor 曹旷牟大强许路捷
Owner DALISHEN ALUMINUM
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