Hot top casting process of 7050 aluminum alloy and 7050 aluminum alloy ingot

A technology of hot top casting and aluminum alloy, applied in the field of metal materials, can solve the problem of low pass rate of ingot inspection

Inactive Publication Date: 2015-04-22
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The production process of 7050 aluminum alloy includes smelting, on-line processing and casting, but the ...

Method used

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Embodiment 1

[0086] Production of 7050 aluminum alloy with an ingot length of 4000mm and an ingot specification of Φ850. 4 castings at one time, considering the oxidation loss of 5%, the density of the alloy is 2800kg / m 3 , then calculate the total feeding amount = π × 0.85 2 / 4×4.0×4×(1+5%)×2800≈26700kg.

[0087] Sprinkle 60kg (approximately 60kg here) of 2# solvent powder evenly in the smelting furnace, then put 614kg pure Cu plate, 1654kg pure Zn ingot, 133kgAl-Ti master alloy, 800kgAl-Zr master alloy and 22855kgAL ingot in order from small to Furnace loading is carried out in a large order, that is, small pieces of material are loaded first, and then large pieces of material are loaded. At the same time, intermediate alloys with high melting points are installed in the middle and upper layers, and metals that are easy to burn are installed in the middle layer. The hearth temperature of the smelting furnace is controlled at ≤1050°C, and the melt temperature is controlled at ≤770°C. Wh...

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Abstract

The invention provides a hot top casting process of a 7050 aluminum alloy. The process comprises the following steps: (A) mixing a Cu source, a Mg source, a Zn source, a Ti source, a Zr source and a Al source, and then performing smelting to obtain a smelted material; (B) sequentially performing online degassing, online filtration and online refining on the smelted material obtained in the step (A) to obtain an online treatment product; and (C) performing casting on the online treatment product obtained in the step (B) to obtain the 7050 aluminum alloy, wherein the casting speed is 8-14mm/min. The hot top casting process provided by the invention adopts an appropriate casting speed and can be used for improving the flaw detection qualified rate of the aluminum alloy, and experimental results show that the flaw detection qualified rate of the 7050 aluminum alloy prepared by the hot top casting process of aviation aluminum, provided by the invention, is 97-99%.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a hot top casting process of 7050 aluminum alloy and the 7050 aluminum alloy. Background technique [0002] Aluminum alloy is an alloy assembly with aluminum as the matrix element. The main alloy elements include copper, silicon, magnesium, zinc, manganese, and nickel, iron, titanium, chromium, lithium and other alloy elements. The density of aluminum alloy is low, but its strength is relatively high, which is close to or exceeds that of high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is used in aviation, aerospace, automobiles, and machinery manufacturing. It is the most widely used non-ferrous metal material in the marine, marine and chemical industries, and its usage is second only to steel. [0003] Aluminum alloys with a yiel...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C1/06C22C21/10B22D11/20C22F1/053
Inventor 刁文武姚勇王剑杜荣
Owner SOUTHWEST ALUMINUM GRP
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