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A kind of aluminum manganese cobalt system die casting aluminum alloy with low thermal conductivity and high toughness and its preparation process

An aluminum-manganese-cobalt-based, cast aluminum alloy technology, applied in the field of alloys, can solve the problems of high cost of graphene microchips, increased production cost of aluminum alloys, reduced aluminum alloys, and the like

Active Publication Date: 2020-07-07
XIAMEN JIAJIADA MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this aluminum alloy, low thermal conductivity materials such as kaolin, silicotungstic acid, additives, and nano-ceramic powder are added to the formula to reduce the thermal conductivity of the aluminum alloy, but it is simultaneously added with graphene microflakes, which maintain the original graphite Some planar carbon six-membered ring conjugated crystal structures have excellent electrical and thermal conductivity. Graphene microflakes significantly improve the thermal conductivity of aluminum alloys. At the same time, the cost of graphene microflakes is high, which increases the aluminum alloy Cost of production

Method used

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  • A kind of aluminum manganese cobalt system die casting aluminum alloy with low thermal conductivity and high toughness and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] An Al-Mn-Co-based die-casting aluminum alloy with low thermal conductivity and high toughness

[0045] By weight percentage, it consists of the following components, including Mn: 1%, Co: 0.1%, Mg: 9%, Cr: 0.3%, Ni: 0.17%, Si: 2.3%, trace elements: 0.4%, impurity elements ≤ 0.5%, the balance is Al.

[0046] Adopt the following method to prepare: comprise the steps:

[0047] A. Prepare AlMn10, AlCo10, AlSi20, AlCr5, AlNi10, Mg ingots, Al ingots, and AlB3 master alloys for later use;

[0048] B. Heat the Al ingot, when it is heated to 780°C, add AlCr5, AlCo10, keep it warm for 30 minutes, stir and remove slag;

[0049] C. When the temperature is lowered to 760°C, add AlSi20, AlMn10, AlNi10, and AlB3 master alloys, keep the temperature for 30 minutes, and stir to remove slag;

[0050] D. When the temperature is lowered to 700°C, add Mg ingots, keep the temperature for 20 minutes, stir and remove slag, and form aluminum liquid;

[0051] E. Then, under the action of the ...

Embodiment 2

[0055] An Al-Mn-Co-based die-casting aluminum alloy with low thermal conductivity and high toughness

[0056] By weight percentage, it consists of the following components, including Mn: 1.4%, Co: 0.7%, Mg: 8.5%, Cr: 0.25%, Ni: 0.1%, Si: 1.5%, trace elements: 0.1%, impurity elements ≤ 0.5%, the balance is Al.

[0057] Adopt the following method to prepare: comprise the steps:

[0058] A. Prepare AlMn10, AlCo10, AlSi20, AlCr5, AlNi10, Mg ingots, Al ingots, and AlRe10 master alloys for later use;

[0059] B. Heat the Al ingot, when it is heated to 780°C, add AlCr5, AlCo10, keep it warm for 30 minutes, stir and remove slag;

[0060] C. When the temperature is lowered to 740°C, add AlSi20, AlMn10, AlNi10, AlRe10 master alloys, keep warm for 30 minutes, stir and remove slag;

[0061] D. When the temperature is lowered to 690°C, add Mg ingot, keep it warm for 20 minutes, stir and remove slag, and form aluminum liquid;

[0062] E. Then, under the action of the all-in-one machine ...

Embodiment 3

[0065] An Al-Mn-Co-based die-casting aluminum alloy with low thermal conductivity and high toughness

[0066] By weight percentage, it consists of the following components, including Mn: 1.3%, Co: 0.5%, Mg: 8%, Cr: 0.2%, Ni: 0.15%, Si: 2.1%, trace elements: 0.3%, impurity elements ≤ 0.5%, the balance is Al.

[0067] Adopt the following method to prepare: comprise the steps:

[0068] A. Prepare AlMn10, AlCo10, AlSi20, AlCr5, AlNi10, Mg ingots, Al ingots, and AlTi5B1 master alloys for later use;

[0069] B. Heat the Al ingot, when it is heated to 780°C, add AlCr5, AlCo10, keep it warm for 30 minutes, stir and remove slag;

[0070] C. When the temperature is lowered to 740°C, add AlSi20, AlMn10, AlNi10, AlTi5B1 master alloys, keep warm for 30 minutes, stir and remove slag;

[0071] D. When the temperature is lowered to 700°C, add Mg ingots, keep the temperature for 20 minutes, stir and remove slag, and form aluminum liquid;

[0072] E. Then, under the action of the all-in-one...

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Abstract

The invention relates to a low-heat-conduction and high-toughness aluminum-manganese-cobalt-series die-cast aluminum alloy and a processing technology thereof, and belongs to the technical field of alloys. The components of the cast aluminum alloy comprise Al, Mn, Co, Mg, Cr, Ni, Si, trace elements and impurity elements, the low-heat-conductivity and high-toughness aluminum-manganese-cobalt seriesdie-cast aluminum alloy not only has the advantages of lower thermal conductivity, but also has good strength and meets market requirements. Meanwhile, raw materials of the die-cast aluminum alloy are mixed in steps and batches, sufficient reaction can be carried out between the raw materials, a required compound is formed, the production stability and performance of the die-cast aluminum alloy are increased, the raw materials of the die-cast aluminum alloy are made of intermediate alloys and metal elemental ingots, the raw materials are easy to obtain, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an aluminum-manganese-cobalt series die-casting aluminum alloy with low thermal conductivity and high toughness and a preparation process thereof. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. Aluminum alloy has the advantages of low density, high strength, good plasticity, and good electrical conductivity, thermal conductivity, and corrosion resistance. It has been widely used in aerospace, automobile and machinery manufacturing. With the continuous development of science and technology in our country, the aluminum alloy industry has also entered a new stage, and aluminum alloy products can be seen everywhere in our lives, such as door bodies, door handles, stair handrails, support frames, tables and chairs, wheelchairs, etc. When using aluminum alloy products in the open air in winter, when the human ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/08
Inventor 蔡远新李志强
Owner XIAMEN JIAJIADA MACHINERY