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Aluminum alloy, flat micro-channel aluminum tubes, manufacturing method of flat micro-channel aluminum tubes and heat exchanger

An aluminum alloy and micro-channel technology, applied in the field of aluminum alloy materials, can solve problems such as inability to meet needs, and achieve the effects of low cost, improved stability and continuity, and high extrusion processability.

Active Publication Date: 2015-12-30
LIAOCHENG WANHE IND MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned technical difficulties, it can be seen that in order to stably and continuously produce qualified microchannel aluminum flat tubes, on the basis of strictly controlling the production process steps and related process parameters, the quality of the raw material aluminum alloy must also be strictly controlled; in addition, with the advancement of science and technology, The market needs micro-channel aluminum flat tubes with higher performance, including extrusion processing performance, mechanical properties, corrosion resistance and blast-proof performance, etc., but some properties or some properties of the existing raw material aluminum alloys have not been able to To meet the needs of stable and continuous production of qualified micro-channel aluminum flat tubes, it has been unable to meet the market's needs for micro-channel aluminum flat tubes with higher performance

Method used

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  • Aluminum alloy, flat micro-channel aluminum tubes, manufacturing method of flat micro-channel aluminum tubes and heat exchanger
  • Aluminum alloy, flat micro-channel aluminum tubes, manufacturing method of flat micro-channel aluminum tubes and heat exchanger

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preparation example Construction

[0044] The present invention also provides a method for preparing the above-mentioned microchannel aluminum flat tube, comprising the following steps:

[0045] 1) Put the Al source, Si source, Fe source and Cu source into the melting furnace to melt to obtain the melt, then stir evenly, and put the Zr source and Mn source into the melt according to the ratio when the melt temperature is 740 ° C ~ 750 ° C , then simmer in the oven for 8 minutes to 10 minutes, and then stir again;

[0046] 2) Refining the melt obtained in step 1), the quality of the added refining agent accounts for 4‰~6‰ of the mass of the melt, and the refining agent is added in two times, refining for 15min~20min each time, and then using Refining with gas refining agent for 15min~20min, control the mass of degassing refining agent to account for 1.5‰~2.2‰ of the mass of the melt. During the refining process, when the temperature of the melt is 740℃~750℃, the Ti source and Put the B source into the melt, and...

Embodiment 1

[0060] 1) Put the Al source, Si source, Fe source and Cu source into the melting furnace to melt to obtain the melt, and then stir evenly. When the melt temperature is 740°C, put the Zr source and Mn source into the melt according to the ratio, and then stew Oven for 10 minutes, then stir again;

[0061]2) Refining the melt obtained in step 1), the quality of the added refining agent accounts for 4‰ of the mass of the melt, and the refining agent is added in two times, refining for 20 minutes each time, and then refining with a degassing refiner 15min, control the mass of the degassing refiner to account for 2.2‰ of the mass of the melt. During the refining process, when the temperature of the melt is 740°C, put Ti source and B source into the melt according to the ratio, and take samples for testing after refining evenly. Stand still for 30 minutes after passing the test;

[0062] 3) Perform on-line argon degassing treatment on the molten solution after step 2), control the ...

Embodiment 2

[0070] 1) Put the Al source, Si source, Fe source and Cu source into the melting furnace to melt to obtain the melt, and then stir evenly. When the melt temperature is 745°C, put the Zr source and Mn source into the melt according to the ratio, and then stew Furnace for 9 minutes, then stir again;

[0071] 2) Refining the melt obtained in step 1), the quality of the added refining agent accounts for 5‰ of the mass of the melt, the refining agent is divided into two additions, refining for 17 minutes each time, and then refining with a degassing refiner 17 minutes, control the mass of the degassing refiner to account for 1.8‰ of the mass of the melt. During the refining process, when the temperature of the melt is 745°C, put Ti source and B source into the melt according to the ratio, and take samples for testing after refining evenly. Stand still for 27 minutes after passing the test;

[0072] 3) Perform on-line argon degassing treatment on the molten solution after step 2), ...

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Abstract

The invention discloses aluminum alloy. The aluminum alloy is prepared from, by weight, 0.60%-1.20% of Mn, 0.05%-0.20% of Si, 0.05%-0.50% of Fe, 0.15%-0.45% of Cu, 0.05%-0.30% of Zr, 0.05%-0.30% of B, 0.05%-0.20% of Ti and the balance Al and unavoidable impurities. The aluminum alloy can have higher extrusion machining property, mechanical property, corrosion resistance property and blasting prevention property by controlling the types and contents of elements in the aluminum alloy, the demand for stably and continuously producing qualified flat micro-channel aluminum tubes can be met, and the demand for the flat micro-channel aluminum tubes having higher performance of the market is met. The invention further discloses the flat micro-channel aluminum tubes and a manufacturing method of the flat micro-channel aluminum tubes. The invention further discloses a heat exchanger.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to an aluminum alloy, a microchannel aluminum flat tube, a preparation method thereof, and a heat exchanger. Background technique [0002] Micro-channel aluminum flat tube, also known as parallel flow aluminum flat tube, is a thin-walled porous flat tubular material made of refined aluminum rods, formed by hot extrusion, and sprayed with zinc on the surface for anti-corrosion treatment. It is mainly used for various refrigerants In the air-conditioning system, as pipe components carrying new environmentally friendly refrigerants, they are gradually being used in vehicle air conditioners, commercial air conditioners, and household air conditioners. [0003] Due to the high technical content of the micro-channel aluminum flat tube, the production is extremely difficult. The minimum variety width is 12mm, and the thickness is only 1mm, but there are 12 to 16 holes. Th...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02C22C1/06C22F1/04F28F1/02F28F21/08
CPCC22C1/02C22C1/06C22C21/00C22F1/04F28F1/02F28F21/08
Inventor 葛永跃王卫华董自涛田成栋王海申
Owner LIAOCHENG WANHE IND MFR