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7085 aluminium alloy hot-top casting process and aluminium alloy prepared by adopting same

A hot-top casting and aluminum alloy technology, applied in the field of metal materials, can solve the problems of low pass rate of flaw detection and increased production costs

Active Publication Date: 2015-03-11
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the pass rate of flaw detection of the existing 7085 aluminum alloy ordinary casting ingot is low, only about 80%, resulting in an increase in the overall production cost

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0080] Production of 7085 aluminum alloy with an ingot length of 4200mm and an ingot specification of Φ650. 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×0.652 / 4×4.2×4×(1+5%)×2800≈17400kg.

[0081] Sprinkle 40kg of 2# solvent powder evenly in the smelting furnace, then load 296kg of pure Cu plate, 1322kg of pure Zn ingot, 522kg of Al-Zr master alloy and 14964kg of AL ingot in order from small to large. , and then load large pieces of material, and at the same time, the intermediate alloy with high melting point is installed in the middle and upper layers, and the metal that is easy to burn is 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. When the melt softens, slumps and flattens, 80kg of 2# flux powder is evenly sprinkled into the furnace, and the metal is stirred timel...

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Abstract

The invention provides a 7085 aluminium alloy hot-top casting process which comprises the following steps: (A), smelting a Cu source, a M source, a Mg source, a Cr source, a Zn source, a Ti source, a Be source, a Zr source and a Al source to obtain a smelted material; (B) sequentially performing on-line degassing, on-line filtering and on-line refining on the smelted material obtained in the step (A) to obtain an on-line processed product; (C) casting the on-line processed product obtained in the step (B) to obtain a 7085 aluminium alloy, wherein the casting speed is 15-25 mm / min, and the 7085 aluminium alloy comprises the following components in percentage by weight: 0-2.6 percent of Cu, 0-0.6 percent of Mn, 1.1-3.0 percent of Mg, 0-0.3 percent of Cr, 4.4-8 percent of Zn, 0-0.06 percent of Ti, 0-0.0009 percent of Be, 0-0.25 percent of Zr, and the balance of Al. The invention provides the 7085 aluminium alloy.

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 7085 aluminum alloy and the aluminum alloy thereof. 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 y...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C1/02
CPCB22D11/003C22C1/026C22C21/10
Inventor 刁文武姚勇王剑
Owner SOUTHWEST ALUMINUM GRP
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