Al-Fe-Cu alloy material and preparation method thereof

An alloy material, al-fe-cu technology, applied in the field of Al-Fe-Cu alloy material and its preparation, can solve the problem of poor wire and cable elongation, flexibility and creep resistance, difficult to adapt to the development of wire and cable, wire and cable The problem of poor electrical conductivity of cables, etc., can improve creep resistance and thermal stability, facilitate processing, and improve organizational structure.

Active Publication Date: 2010-12-15
安徽省惠尔电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For aluminum alloy conductors, there are two important quality indicators: one is resistivity, which directly affects the conductivity of aluminum alloy conductors. The resistivity is mainly determined by the chemical composition of raw materials, especially in In the aluminum alloy, if other impurity elements such as copper and iron are added, the conductive effect of the wire and cable will be deteriorated; the second is the mechanical properties, the elongation, flexibility and creep resistance of the wire and cable when ordinary electrical aluminum is used as a conductor Both are poor, and the use safety and stability are low
As can be seen from the above, the aluminum alloy materials in the prior art are difficult to adapt to the development of wire and cable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Casting process

[0020] 1. Ingredients

[0021] 6348kg aluminum ingot (0.04% Si content, 0.08% Fe content), 72kg aluminum-iron alloy (22% Fe content), 7Kg aluminum-copper alloy (50% Cu content), 67kg rare earth aluminum alloy (10% rare earth content), 21kg boron Aluminum alloy (3.5% B content), 9kg refining agent (NaCl KCl Na 3 AlF 6 ·ZnCl 2 ).

[0022] 2. Feeding method

[0023] When feeding, the aluminum-iron alloy and aluminum-copper alloy are evenly added in batches from the cupola along with the aluminum ingots to ensure that the ingredients are as uniform as possible.

[0024] 3. Heat preservation process

[0025] When the aluminum alloy liquid obtained by melting aluminum ingot, aluminum-iron alloy and aluminum-copper alloy flows into the holding furnace, the temperature is controlled at 720-750°C; when adding rare earth aluminum alloy and boron-aluminum alloy to the aforementioned aluminum alloy liquid, the temperature should be raised to 750-750°C. 7...

Embodiment 2

[0051] 1. Casting process

[0052] 1. Ingredients

[0053] 8466kg of aluminum ingots (0.06% Si content, 0.10% Fe content), 265.2kg aluminum-iron alloy (19% Fe content), 10Kg aluminum-copper alloy (49.5% Cu content), 88kg rare earth aluminum alloy (10% rare earth content), 29.4 kg boron aluminum alloy (3.5% B content), 11kg refining agent (NaCl KCl Na 3 AlF 6 ·ZnCl 2 ).

[0054] 2. Feeding method

[0055] When feeding, the aluminum-iron alloy and aluminum-copper alloy are evenly added in batches from the cupola along with the aluminum ingots to ensure that the ingredients are as uniform as possible.

[0056] 3. Heat preservation process

[0057] When the aluminum alloy liquid obtained by melting aluminum ingot, aluminum-iron alloy and aluminum-copper alloy flows into the holding furnace, the temperature is controlled at 720-750°C; when adding rare earth aluminum alloy and boron-aluminum alloy to the aforementioned aluminum alloy liquid, the temperature should be raised to...

Embodiment 3

[0083] 1. Casting process

[0084] 1. Ingredients

[0085] 6020kg aluminum ingot (0.10% Si content, 0.13% Fe content), 420kg aluminum-iron alloy (21% Fe content), 15Kg aluminum-copper alloy (51% Cu content), 100.5kg rare earth aluminum alloy (9.8% rare earth content), 25kg Boron aluminum alloy (3.5% B content), 10kg refining agent (NaCl KCl Na 3 AlF 6 ·ZnCl 2 ).

[0086] 2. Feeding method

[0087] When feeding, the aluminum-iron alloy and aluminum-copper alloy are evenly added in batches from the cupola along with the aluminum ingots to ensure that the ingredients are as uniform as possible.

[0088] 3. Heat preservation process

[0089] When the aluminum alloy liquid obtained by melting aluminum ingot, aluminum-iron alloy and aluminum-copper alloy flows into the holding furnace, the temperature is controlled at 720-750°C; when adding rare earth aluminum alloy and boron-aluminum alloy to the aforementioned aluminum alloy liquid, the temperature should be raised to 750-75...

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Abstract

The invention particularly relates to an Al-Fe-Cu alloy material and a preparation method thereof. The Al-Fe-Cu alloy material comprises the following components in percentage by weight: 0.20-1.30 wt% of Fe, 0.01-0.08 wt% of Cu, 0.06-0.15 wt% of Si, 0.02-0.10 wt% of rare-earth element and the balance of Al and unavoidable impurities. The aluminum alloy is prepared by casting and semi-annealing raw materials. When the aluminum alloy is prepared, the alloy material is semi-annealed, and thus, the adverse effects of stress on a conductor structure in the process of drawing and twisting are reduced, the electric conductivity reaches and even exceeds 61% of IACS (International Annealed Copper Standard) (the electric conductivity standard of an aluminum conductor for a general electrician is 61% of IACS), and the performances of elongation and the flexibility of the aluminum alloy are improved greatly by annealing. The performances of the elongation of a cable made of the aluminum alloy wire can reach 30%, the flexibility is 25% higher than that of a copper cable, and the resistivity maintains in a lower level.

Description

technical field [0001] The invention belongs to the field of wire and cable materials, and in particular relates to an Al-Fe-Cu alloy material and a preparation method thereof. Background technique [0002] For aluminum alloy conductors, there are two important quality indicators: one is resistivity, which directly affects the conductivity of aluminum alloy conductors. The resistivity is mainly determined by the chemical composition of raw materials, especially in In the aluminum alloy, if other impurity elements such as copper and iron are added, the conductive effect of the wire and cable will be deteriorated; the second is the mechanical properties, the elongation, flexibility and creep resistance of the wire and cable when ordinary electrical aluminum is used as a conductor All are poor, and use security stability is low. From the above, it can be seen that the aluminum alloy materials in the prior art are difficult to adapt to the development of electric wires and cabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03
Inventor 萨意达·尼卡因
Owner 安徽省惠尔电气有限公司
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