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Preparation method of aluminum-copper alloy material

A technology of aluminum-copper alloy and titanium-aluminum alloy, which is applied in the field of aluminum alloy materials to achieve the effects of excellent machining performance, improved mechanical strength and good polishability

Inactive Publication Date: 2017-11-24
JIANGSU SUFENG MECHANICAL DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide people with an aluminum-copper alloy with high strength, excellent plasticity, good fluidity and good heat treatment, machinability and polishability for the defects of existing aluminum alloy materials. Material preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The aluminum-copper alloy material prepared by the present invention: contains the following components by weight percentage: 1% copper, 3% titanium, 1.5% iron, 0.2% silicon, 0.4% rare earth, and the rest is aluminum; the rare earth elements are lanthanum and cerium , at least one of neodymium and yttrium.

[0022] The present invention comprises the following steps:

[0023] (1) Casting:

[0024] a. According to the parts by weight of the above components, put pure aluminum and aluminum-titanium alloys with aluminum content ≥ 99% into the graphite crucible resistance furnace at room temperature for melting, and add copper according to the above mass ratio when the temperature rises to 720°C continue to smelt;

[0025] b. Raise the melting temperature in the graphite crucible resistance furnace to 720°C and then add rare earth, iron and silicon. After 6-10 minutes, stir the solution in the furnace and pour it into the pre-made sand mold. After cooling, sand falling an...

Embodiment 2

[0030] The aluminum-copper alloy material prepared by the present invention: contains the following components by weight percentage: 3% copper, 5% titanium, 0.1% iron, 1.2% silicon, 0.8% rare earth, and the rest is aluminum; the rare earth elements are lanthanum and cerium , at least one of neodymium and yttrium.

[0031] The present invention comprises the following steps:

[0032] (1) Casting:

[0033] a. According to the parts by weight of the above components, put pure aluminum and aluminum-titanium alloys with aluminum content ≥ 99% into the graphite crucible resistance furnace at room temperature for melting, and add copper according to the above mass ratio when the temperature rises to 720°C continue to smelt;

[0034] b. Raise the melting temperature in the graphite crucible resistance furnace to 740°C, then add rare earth, iron and silicon. After 8 minutes, stir the solution in the furnace and pour it into the pre-made sand mold. After cooling, sand falling and clea...

Embodiment 3

[0039] The aluminum-copper alloy material prepared by the present invention: contains the following components by weight percentage: 4% copper, 3% titanium, 0.4% iron, 0.2% silicon, 0.3% rare earth, and the rest is aluminum; the rare earth elements are lanthanum and cerium , at least one of neodymium and yttrium.

[0040] The present invention comprises the following steps:

[0041] (1) Casting:

[0042] a. According to the parts by weight of the above components, put pure aluminum and aluminum-titanium alloys with aluminum content ≥ 99% into the graphite crucible resistance furnace at room temperature for melting, and add copper according to the above mass ratio when the temperature rises to 720°C continue to smelt;

[0043] b. Raise the melting temperature in the graphite crucible resistance furnace to 720°C, then add rare earth, iron and silicon. After 10 minutes, stir the solution in the furnace and pour it into the pre-made sand mold. After cooling, sand falling and cle...

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PUM

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Abstract

The invention discloses a preparation method of an aluminum-copper alloy material. The aluminum-copper alloy material comprises the following components in percentages by weight: 1-4% of copper, 2-5% of titanium, 0.1-1.5% of iron, 0.2-1.5% of silicon, less than 1% of rare earth and the balance of aluminum; and the rare earth element is at least one of lanthanum, cerium, neodymium and yttrium. The preparation method comprises the following steps: (1) casting, and (2) heat treatment. The aluminum-copper alloy material has high strength, excellent plasticity and good mobility; and after casting of the aluminum-copper alloy material, defects such as sand holes, pores and shrinkage cannot be caused easily.

Description

technical field [0001] The invention belongs to an aluminum alloy material, in particular to a preparation method of an aluminum-copper alloy material. Background technique [0002] At present, the main body of vacuum forming molds mostly uses ZL401 alloy material. ZL401 belongs to Al-Zn alloy. Due to the high content of zinc in the alloy, it has high density, poor corrosion resistance, and poor castability. , the fluidity is poor, so the material will have blisters, pores, and shrinkage defects during casting and use, and these defects can only be found after processing, which has a great negative impact on processing costs and manufacturing cycles. We combine ZL401 The characteristics of the material and its composition are analyzed. By changing the material composition, the aluminum-copper alloy is developed, and the structure of the material is changed through heat treatment to eliminate defects, increase the mechanical properties of the material, and improve the surface...

Claims

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Application Information

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IPC IPC(8): C22C21/14C22C21/00C22C1/03C22F1/04C22F1/057
CPCC22C21/14C22C1/026C22C1/03C22C21/00C22C21/003C22F1/002C22F1/04C22F1/057
Inventor 金传良厉锋
Owner JIANGSU SUFENG MECHANICAL DEV CO LTD
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