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Aluminum alloy for electrolytic capacitor outer shell and preparation method of aluminum alloy

A technology for electrolytic capacitors and aluminum alloys, applied in the field of aluminum alloys, can solve the problems of low strength, difficulty in punching capacitor casings, poor explosion-proof performance of capacitors, etc., and achieve the effects of reducing usage, reducing production costs, and promoting economic benefits.

Inactive Publication Date: 2017-12-22
RUYUAN DONGYANG UACJ PRECISION FOIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At the same time, the strength of the above-mentioned 3003 aluminum alloy is too low, and the explosion-proof performance of the capacitor is poor, while the 3004 aluminum alloy has explosion-proof performance, but its strength is too high, and it is difficult in the process of stamping the capacitor shell; in order to reduce production costs and save energy and reduce consumption , it is necessary to digest the 4XXX series aluminum alloys, composite aluminum alloys and other aluminum alloy wastes containing Si, Fe and other alloying elements produced in the mass production process and solve the performance problems encountered by 3003 and 3004 aluminum alloys

Method used

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  • Aluminum alloy for electrolytic capacitor outer shell and preparation method of aluminum alloy
  • Aluminum alloy for electrolytic capacitor outer shell and preparation method of aluminum alloy
  • Aluminum alloy for electrolytic capacitor outer shell and preparation method of aluminum alloy

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Effect test

Embodiment 1

[0029] The chemical composition (WT%) of aluminum alloy of a kind of electrolytic capacitor case of the present embodiment is as follows:

[0030]

[0031] The preparation method of aluminum alloy for above-mentioned electrolytic capacitor shell, comprises the following steps:

[0032] (1) Calculate and prepare the materials according to the above ingredients (76% recycled aluminum, 23% electrolytic aluminum ingots and 1% aluminum alloy additives), put them into the melting furnace for melting, after refining, slag removal, stirring, analysis and composition adjustment Enter the static furnace, static, refining, degassing, slag removal, adding Al-5Ti-1B wire into the molten aluminum, and then enter the casting machine to cast into ingots. The surface of the ingot is milled.

[0033] (2) Soak the ingot, the heat preservation temperature of the ingot is 580° C., and the heat preservation time of the ingot is 17 hours. The starting thickness of the hot rolling is controlled ...

Embodiment 2

[0037] The chemical composition (WT%) of aluminum alloy of a kind of electrolytic capacitor case of the present embodiment is as follows:

[0038]

[0039] The preparation method of aluminum alloy for above-mentioned electrolytic capacitor shell, comprises the following steps:

[0040] (1) Calculate and prepare the materials according to the above ingredients (87% recycled aluminum, 12.2% electrolytic aluminum ingots and 0.8% aluminum alloy additives), put them into the melting furnace for melting, after refining, deslagging, stirring, analyzing and adjusting the ingredients Enter the static furnace, static, refining, degassing, slag removal, adding Al-5Ti-1B wire into the molten aluminum, and then enter the casting machine to cast into ingots. The surface of the ingot is milled.

[0041] (2) Soak the ingot, the heat preservation temperature of the ingot is 590° C., and the heat preservation time of the ingot is 16 hours. The hot rolling start temperature is controlled at...

Embodiment 3

[0045] The chemical composition (WT%) of aluminum alloy of a kind of electrolytic capacitor case of the present embodiment is as follows:

[0046]

[0047] The preparation method of aluminum alloy for above-mentioned electrolytic capacitor shell, comprises the following steps:

[0048] (1) Calculate and prepare the materials according to the above ingredients (82% recycled aluminum, 17.3% electrolytic aluminum ingots and 0.7% aluminum alloy additives), put them into the melting furnace for melting, after refining, deslagging, stirring, analyzing and adjusting the ingredients Enter the static furnace, static, refining, degassing, slag removal, adding Al-5Ti-1B wire into the molten aluminum, and then enter the casting machine to cast into ingots. The surface of the ingot is milled.

[0049] (2) Soak the ingot, the heat preservation temperature of the ingot is 600° C., and the heat preservation time of the ingot is 15 hours. The starting temperature of hot rolling is control...

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Abstract

The invention relates to an aluminum alloy for an electrolytic capacitor outer shell and a preparation method of the aluminum alloy. The aluminum alloy comprises the following components of, by mass, 0.4-0.7% of Si, 0.2-0.7% of Fe, 0.05-0.25% of Cu, 1.0-1.5% of Mn, 0.8-1.3% of Mg, 0.1-0.25% of Zn, 0.01-0.08% of Ti, no larger than 0.15% of all other impurities and the balance Al, wherein the content of each of the other impurities is no larger than 0.05%. When the aluminum alloy for the electrolytic capacitor outer shell is smelted and cast, the using ratio of waste is 70% or more, the using quantity of original electrolytic aluminum ingots is decreased to the utmost extent, and the production cost is reduced. By adjusting the techniques in the production process, in performance, the aluminum alloy for the electrolytic capacitor outer shell has the advantages that the anti-explosion performance is excellent, and the punching difficulty is lowered.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an aluminum alloy for an electrolytic capacitor shell and a preparation method thereof. Background technique [0002] At present, the aluminum shells for electrolytic capacitors in the capacitor industry are mainly low-strength 3003 aluminum alloys and medium-strength 3004 aluminum alloys. When the above two aluminum alloys are smelted and cast, electrolytic aluminum ingots are basically used for smelting production. The high cost is not conducive to the energy saving and consumption reduction of the entire industrial chain. Aluminum is supplied from both ore (primary) and scrap metal (recycled). Although the reserves of primary aluminum ore resources are relatively abundant, the production requires a large amount of energy (a ton of aluminum consumes more than 15,000kWh of electricity) and produces a large amount of carbon emissions (a ton of aluminum emits as much as 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04H01G9/08
CPCC22C21/00C22C1/026C22F1/04H01G9/08
Inventor 胡展奎池国明贺智敏黄子科
Owner RUYUAN DONGYANG UACJ PRECISION FOIL CO LTD
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