A kind of 2007 aluminum alloy bar production process

A production process and technology of aluminum alloy, applied in the field of aluminum alloy manufacturing, can solve the problems of difficulty in online quenching of φ200-210mm aluminum alloy bars, and achieve the effect of solving difficulty in online quenching, not easy to scratch, and uniform in chemical composition

A production process and technology of aluminum alloy, applied in the field of aluminum alloy manufacturing, can solve the problems of difficulty in online quenching of φ200-210mm aluminum alloy bars, and achieve the effect of solving difficulty in online quenching, not easy to scratch, and uniform in chemical composition

CN109022852BActive Publication Date: 2020-06-02CHINA ZHONGWANG
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  • A kind of 2007 aluminum alloy bar production process
  • A kind of 2007 aluminum alloy bar production process

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Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 2 A kind of 2007 aluminum alloy bar production process shown, comprises the following steps:

[0031] A. Melting and casting: Prepare 2007 aluminum alloy raw materials according to the following weight ratio: Si: 0.50%, Mg: 0.60%, Fe: 0.80%, Cu: 4.2%, Mn: 0.45%, Cr: 0.03%, Ni: 0.02 %; Zn: 0.02%, Pb: 0.80%, single impurity ≤ 0.05%, total impurity ≤ 0.15%, the balance Al, put the prepared aluminum alloy raw materials into the smelting furnace and mix them evenly to melt into liquid aluminum alloy, and the liquid The aluminum alloy is melted and cast into an aluminum alloy ingot, and the melting temperature of the liquid aluminum alloy is 720°C;

[0032] B. Homogenization: heat the aluminum alloy ingot obtained by melting and casting to 480°C and keep it for 8 hours, then heat it to 510°C and keep it for 3 hours, and cool it to 420°C to obtain a homogeneous aluminum alloy ingot;

[0033] C. Extrusion: Send the homogenized aluminum alloy ingot into the ext...

Embodiment 2

[0040] Such as figure 2 A kind of 2007 aluminum alloy bar production process shown, comprises the following steps:

[0041] A. Melting and casting: prepare 2007 aluminum alloy raw materials according to the following weight ratio: Si: 0.60%, Mg: 0.40%, Fe: 0.60%, Cu: 4.0%, Mn: 0.55%, Cr: 0.03%, Ni: 0.02% ; Zn: 0.02%, Pb: 0.90%, single impurity ≤ 0.05%, total impurity ≤ 0.15%, the balance Al, put the prepared aluminum alloy raw materials into the smelting furnace and mix them evenly to melt into liquid aluminum alloy, and the liquid aluminum The alloy is melted and cast into an aluminum alloy ingot, and the melting temperature of the liquid aluminum alloy is 750°C;

[0042] B. Homogenization: heat the aluminum alloy ingot obtained by melting and casting to 480°C and keep it for 8 hours, then heat it to 510°C and keep it for 3 hours, and cool it to 360°C to obtain a homogeneous aluminum alloy ingot;

[0043] C. Extrusion: Send the homogenized aluminum alloy ingot into the extru...

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Abstract

The invention belongs to the technical field of aluminum alloy manufacturing and relates to a 2007 aluminum alloy rod manufacturing process. The 2007 aluminum alloy rod manufacturing process comprisesthe following steps of casting, homogenizing, extruding, online quenching, stretching, sawing and framing, aging heat treatment and packaging, wherein the homogenizing process comprises the steps ofheating an aluminum alloy cast ingot obtained by casting to a temperature of 480 degrees centigrade, preserving the heat of the aluminum alloy cast ingot for 8 h, heating the aluminum alloy cast ingotto 510 degrees centigrade, preserving the heat of the aluminum alloy cast ingot for 3 h, and cooling the aluminum alloy cast ingot 360-420 degrees centigrade to obtain the homogenized aluminum alloycast ingot; and therefore, the breakthrough pressure of an extruder in the extruding process is reduced to 260 Bar, stable extrusion is made easier in the whole extruding process, a situation of pressure building of equipment is uneasy to cause, the equipment and a mold are uneasily damaged, and a problem that the online quenching of a 2007 aluminum alloy rod is difficult is solved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy manufacturing, and relates to a production process of 2007 aluminum alloy rods. Background technique [0002] The 2007 aluminum alloy belongs to the Al-Cu-Mg series of heat-treatable and strengthened aluminum alloys. As a structural high-strength aluminum alloy, it has a wide range of applications and is important for many load-bearing structures such as aircraft fuselages, wings, connectors, and rail trains. Material. 2007 Aluminum alloys are mainly used in aviation and aerospace fields. The leading idea of ​​new aircraft design is to reduce fuel consumption, increase flight speed, and increase load capacity in order to improve tactical performance and economic benefits. Therefore, in terms of structural design, it is required to reduce the weight of the machine body as much as possible, and in terms of material selection, the material that can represent the highest specific strength of t...

Claims

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Application Information

Patent Timeline
02 Jun 2020
Publication
CN109022852B
IPC
C22C1/02; C22C21/14; C22C21/16; C22C21/18; C22F1/057
CPC
C22C1/026; C22C21/14; C22C21/16; C22C21/18; C22F1/002; C22F1/057
Inventors
周广宇; 胡忠岐