Production process for large-section aluminum alloy radiating fin

A technology of aluminum alloy and heat sink, applied in the field of aluminum alloy manufacturing, can solve the problem that it is difficult to meet the dimensional tolerance and surface quality of products

Active Publication Date: 2014-02-26
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for large-section thin-walled multi-tooth aluminum alloy heat sinks (such as figure 2 As shown: it includes an aluminum alloy base plate 1, a plurality of heat dissipation blocks 2 parallel to each other on the base plate 1 and perpendicular to the base plate 1, and heat dissipation protrusions 3 arranged on the heat dissipation fast 2; The thickness is less than 6mm), the existing production process is difficult to meet the product's requirements for dimensional tolerance and surface quality

Method used

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  • Production process for large-section aluminum alloy radiating fin
  • Production process for large-section aluminum alloy radiating fin

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Experimental program
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Effect test

Embodiment 1

[0018] The process for producing large-section aluminum alloy heat sinks in this embodiment includes the steps of composition optimization, casting billet making, extrusion molding, quenching, stretching and straightening, and aging treatment in sequence. After the composition optimization step, the composition and quality of the aluminum alloy are optimized. For example: Si: 0.30%, Fe: 0.22%, Cu: 0.03%, Mn: 0.05%, Mg: 0.48%, Cr: 0.05%, Zn: 0.03%, Ti: 0.06%, Al: balance; In the extrusion molding step, the extrusion speed is 0.8m / min, the casting rod temperature is 525°C during extrusion molding, the temperature difference between the front and rear ends of the casting rod is 25°C, the mold temperature is 485°C, and the extrusion cylinder temperature is 465°C.

[0019] As an improvement of this embodiment, the profile obtained in the extrusion molding step is quenched immediately after being released from the mold, and the quenching method is air cooling.

[0020] As an improve...

Embodiment 2

[0023] The process for producing large-section aluminum alloy heat sinks in this embodiment includes the steps of composition optimization, casting billet making, extrusion molding, quenching, stretching and straightening, and aging treatment in sequence. After the composition optimization step, the composition and quality of the aluminum alloy are optimized. For example: Si: 0.40%, Fe: 0.18%, Cu: 0.05%, Mn: 0.03%, Mg: 0.58%, Cr: 0.03%, Zn: 0.05%, Ti: 0.04%, Al: balance; In the extrusion molding step, the extrusion speed is 1.8m / min, the casting rod temperature is 495°C during extrusion molding, the temperature difference between the front and rear ends of the casting rod is 35°C, the mold temperature is 515°C, and the extrusion cylinder temperature is 435°C.

[0024] As an improvement of this embodiment, the profile obtained in the extrusion molding step is quenched immediately after being released from the mold, and the quenching method is air cooling.

[0025] As an improve...

Embodiment 3

[0028] The process for producing large-section aluminum alloy heat sinks in this embodiment includes the steps of composition optimization, casting billet making, extrusion molding, quenching, stretching and straightening, and aging treatment in sequence. After the composition optimization step, the composition and quality of the aluminum alloy are optimized. For example: Si: 0.35%, Fe: 0.20%, Cu: 0.04%, Mn: 0.04%, Mg: 0.52%, Cr: 0.04%, Zn: 0.04%, Ti: 0.05%, Al: balance; In the extrusion molding step, the extrusion speed is 0.8-1.8m / min, the casting rod temperature is 510°C during extrusion molding, the temperature difference between the front and rear ends of the casting rod is 30°C, the mold temperature is 500°C, and the extrusion barrel temperature is 450°C .

[0029] As an improvement of this embodiment, the profile obtained in the extrusion molding step is quenched immediately after being released from the mold, and the quenching method is air cooling.

[0030] As an imp...

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Abstract

The invention discloses a production process for a large-section aluminum alloy radiating fin. The process comprises the following steps component optimization; pouring and blank making; extrusion molding; quenching; stretcher straightening; and aging treatment. After optimization, an aluminum alloy comprises, by mass, 0.30 to 0.40% of Si, 0.18 to 0.22% of Fe, 0.03 to 0.05% of Cu, 0.03 to 0.05% of Mn, 0.48 to 0.58% of Mg, 0.03 to 0.05% of Cr, 0.03 to 0.05% of Zn and 0.04 to 0.06% of Ti, with the balance being Al. In the step of extrusion molding, an extrusion speed is 0.8 to 1.8 mmin, cast bar temperature is 510 +- 15 DEG C, die temperature is 500 +- 15 DEG C, and the temperature of an extrusion container is 450 +- 15 DEG C. The production process for the large-section aluminum alloy radiating fin can produce qualified radiating fins with a large section size of more than 450 mm.

Description

technical field [0001] The invention belongs to the field of aluminum alloy manufacturing, and relates to a process for producing aluminum alloy heat sinks, in particular to a process for producing large-section aluminum alloy heat sinks. Background technique [0002] Aluminum alloy has the advantages of light weight, high strength, good wear resistance, and not easily deformed after processing. It is widely used in automobiles, aerospace, shipping and other fields. Since the heat sink made of aluminum alloy has the advantages of light weight and high thermal conductivity, it has been widely used in many fields such as machinery and electricity. The cross-sectional view of a common aluminum alloy heat sink is as follows: figure 1 As shown, it includes an aluminum alloy base plate 1, and a plurality of parallel cooling blocks 2 located on the base plate 1 and perpendicular to the base plate 1; currently, extrusion molding is generally used to produce aluminum alloy heat sink...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22F1/047F28F21/08
Inventor 宋超王浩段英冶杨睿赵启平孙响
Owner CHINA ZHONGWANG
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