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High-thermal-conductivity aluminum alloy and preparation method thereof

An aluminum alloy and high thermal conductivity technology, applied in the field of aluminum alloy materials, can solve the problems of electronic vibration obstruction and reduce the thermal conductivity of the alloy, and achieve the effects of convenient source, good die-casting performance and broad application prospects.

Inactive Publication Date: 2018-08-03
NINGBO HELI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When other alloying elements are introduced into the pure metal, defects will occur, which will hinder the free movement of electrons and the vibration of the crystal lattice, and will greatly reduce the thermal conductivity of the alloy.

Method used

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  • High-thermal-conductivity aluminum alloy and preparation method thereof
  • High-thermal-conductivity aluminum alloy and preparation method thereof
  • High-thermal-conductivity aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing an aluminum alloy with high thermal conductivity, comprising the steps of:

[0028] (1) Ingredients

[0029]

[0030] (2) Melting

[0031] Add 356 recharge, ZL102 and AlFe20 alloys into the melting furnace, then raise the temperature by 150°C per hour to 720°C, and stir for 3 minutes after the alloys are completely melted. In the intermediate transfer bag of molten aluminum, add commercial solid refining agent to the molten aluminum at a ratio of 4 / 1000, refine at 720-730°C, degas with high-purity argon, remove slag, and stand for 10 minutes.

[0032] (3) Die casting

[0033] The smelted alloy is used to shape the components of household appliances on a 1250-ton cold chamber die-casting machine. The casting size is 320×290×120mm, the mold preheating temperature is 150°C, the alloy pouring temperature is 660°C, and the injection speed is 3.0m / s. Boost pressure 85MPa.

[0034] (4) heat treatment

[0035] The die casting of the communication ...

Embodiment 2

[0040] A method for preparing an aluminum alloy with high thermal conductivity, comprising the steps of:

[0041] (1) Ingredients

[0042]

[0043]

[0044] (2) Melting

[0045]Add 356 recharge, ZL102 and AlFe20 alloys into the melting furnace, then raise the temperature by 150°C per hour to 720°C, and stir for 3 minutes after the alloys are completely melted. In the intermediate transfer bag of molten aluminum, add commercial solid refining agent to the molten aluminum at a ratio of 4 / 1000, refine at 720-730°C, degas with high-purity argon, remove slag, and stand for 10 minutes.

[0046] (3) Die casting

[0047] Using the smelted alloy, the communication components are formed on a 1600-ton cold chamber die-casting machine. The casting size is 410×320×142mm, the mold preheating temperature is 160°C, the alloy pouring temperature is 680°C, and the injection speed is 3.6m / s. The boost pressure is 90MPa.

[0048] (4) heat treatment

[0049] The die casting of the commu...

Embodiment 3 to Embodiment 9

[0054] The preparation method of the high thermal conductivity aluminum alloys in Examples 3 to 9 is the same as in Example 1, except that the aging treatment time is different, and the aging treatment time is 0.5 hour, 1 hour, 2 hours, 2.5 hours, 3.5 hours, For 4 hours and 5 hours, the performance test results of the die-casting and aging treatment in Examples 3-9 are shown in Table 3.

[0055] The performance detection result of table 3 embodiment 3~9

[0056]

[0057]

[0058] Embodiment 10 to Implementation 16

[0059] The preparation method of the high thermal conductivity aluminum alloys in Examples 10-16 is the same as in Example 1, except that the temperature of aging treatment is different, and the aging treatment temperatures are 120°C, 140°C, 155°C, 160°C, 170°C, 180°C and 200°C, performance test results of die casting and aging treatment in Examples 10-16 are shown in Table 4.

[0060] The performance detection result of table 4 embodiment 10~16

[0061] ...

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Abstract

The invention provides a high-thermal-conductivity aluminum alloy and a preparation method thereof. A die-cast aluminum-silicon-magnesium-iron-manganese alloy material prepared by adopting a die-casting technology and an aging treatment process comprises the following components of, by mass, 5-10% of silicon, 0.5-1% of iron, 0.1-0.60% of magnesium, 0.10-0.40% of manganese, less than or equal to 0.5% of zinc, less than or equal to 0.4% of copper, less than or equal to 0.30% of other elements and the balance aluminum and inevitable trace impurities. According to the high-thermal-conductivity aluminum alloy, the relatively high heat conduction performance, the good mechanical property and the good die-cast forming performance are achieved, cost of the raw material is low, and the source is convenient to obtain; and the high-thermal-conductivity aluminum alloy is particularly suitable for manufacturing parts with light weight and high heat conduction requirements, and has very wide application prospects in the fields of communication, household appliances and the like.

Description

technical field [0001] The invention relates to the field of aluminum alloy materials, in particular to a high thermal conductivity aluminum alloy suitable for die-casting and a preparation method thereof. Background technique [0002] With the rapid development of electronic technology, the demand for communication electronic components is also increasing rapidly, such as communication radio frequency modules and wireless transmission modules. Based on comprehensive requirements such as weight, manufacturing cost, and heat conduction, these components usually use aluminum alloy components. With the increasing complexity of integrated circuits, the heat generated by electronic products is increasing. Excessive temperature will cause these electronic products to run slowly and increase power consumption. Therefore, the heat dissipation performance requirements of these aluminum alloy components are also getting higher and higher. [0003] The common processing method of these...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/03C22F1/043B22D17/00
CPCC22C21/02B22D17/00C22C1/026C22C1/03C22F1/043
Inventor 姚杰王春涛俞锡光曹锡峰张芳芳
Owner NINGBO HELI TECH CO LTD
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