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A method for preparing an aluminum alloy plate on the water-contacting side of a radiator fin

An aluminum alloy plate and radiator technology, which is applied in the field of aluminum alloy processing, can solve the problems of uneven composition and easy cracking of cast-rolled plates, and achieve the effects of solving uneven composition, good corrosion resistance, and improving yield

Active Publication Date: 2022-03-29
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the purpose of the invention is to provide an aluminum alloy plate on the water-touching side of the radiator fin that can solve the problem of uneven composition and easy cracking of the cast-rolled plate, and has good corrosion resistance. Another purpose of the invention is to provide a method for preparing aluminum alloy plates on the water-contacting side of radiator fins that can effectively improve the yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing an aluminum alloy plate on the water-contacting side of a radiator fin, comprising the following steps:

[0019] (1) Melting: Weigh raw materials according to weight percentage, 0.4 wt % Si, 0.2 wt % Fe, 1.5 wt % Zn, 0.3 wt % Cu, 0.008 wt % B, the rest are Al and unavoidable impurities, and heat at 720 °C , so that the material is completely melted and introduced into the holding furnace;

[0020] (2) Heat preservation: use argon gas with a gas flow rate of 15 L / min, tetrachlorethylene liquid refining agent and slag-removing agent to carry out slag removal and refining on the aluminum alloy melt, the quality of the refining agent, slag-removing agent, and aluminum alloy melt The ratio is 3: 1:1000, and at the same time, the metamorphic treatment is carried out in the holding furnace, and the aluminum titanium boron wire rod is added in the holding furnace, and the addition amount is 0.5 kg per ton of aluminum water; the slag removal agent includes...

Embodiment 2

[0025] A method for preparing an aluminum alloy plate on the water-contacting side of a radiator fin, comprising the following steps:

[0026] (1) Melting: Weigh raw materials according to weight percentage, 0.5wt% Si, 0.3wt% Fe, 2.0wt% Zn, 0.4wt% Cu, 0.007wt% B, the rest are Al and unavoidable impurities, heating at 730°C , so that the material is completely melted and introduced into the holding furnace;

[0027] (2) Heat preservation: use argon gas with a gas flow rate of 25 L / min, tetrachlorethylene liquid refining agent and slag-removing agent to carry out slag removal and refining on the aluminum alloy melt, the quality of the refining agent, slag-removing agent, and aluminum alloy melt The ratio is 5: 2: 1000. At the same time, the metamorphic treatment is carried out in the holding furnace, and the AlTiC master alloy refiner is added in the holding furnace, and the addition amount is 0.8 kg per ton of aluminum water; Potassium chloride, 7 parts of calcium fluoride, 6 ...

Embodiment 3

[0032] A method for preparing an aluminum alloy plate on the water-contacting side of a radiator fin, comprising the following steps:

[0033](1) Melting: Weigh raw materials according to weight percentage, 0.45 wt % Si, 0.25 wt % Fe, 1.75 wt % Zn, 0.35 wt % Cu, 0.007 wt % B, the rest are Al and unavoidable impurities, and heat at 725 °C , so that the material is completely melted and introduced into the holding furnace;

[0034] (2) Heat preservation: use argon gas with a gas flow rate of 20 L / min, tetrachlorethylene liquid refining agent and slag-removing agent to carry out slag removal and refining on the aluminum alloy melt, the quality of the refining agent, slag-removing agent, and aluminum alloy melt The ratio is 4:1:1000, and at the same time, the metamorphic treatment is carried out in the holding furnace, and the aluminum titanium boron wire is added in the holding furnace, and the addition amount is 0.6 kg per ton of aluminum water; the slag removal agent includes 3...

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Abstract

The invention discloses an aluminum alloy plate on the water-contacting side of radiator fins and a preparation method thereof. The aluminum alloy plate contains the following raw materials in mass fractions: 0.4-0.5wt% Si, 0.2-0.3wt% Fe, 1.5-2.0 wt% Zn, 0.3-0.4wt% Cu, 0.05-0.1wt% B, and the rest are Al and unavoidable impurities. The preparation method comprises the following steps: (1) weighing raw materials according to weight percentage, heating and melting at 720-730° C., and introducing them into a holding furnace; (2) using a refining agent and a slagging agent to remove slag and refine the aluminum alloy melt, At the same time, the metamorphic treatment is carried out in the holding furnace; (3) the aluminum alloy melt flows from the holding furnace to the filter box, and then flows into the degassing box for online degassing, and the metamorphic treatment is carried out at the same time; (4) after the aluminum alloy melt is sent into the nozzle , using rolls to cast and roll aluminum alloy plates, the temperature of the aluminum alloy solution is controlled at 660-680°C when the plate is erected, the temperature of the cooling water is controlled at 20-25°C, the pressure of the cooling water is adjusted at 0.3-0.5MPa, and the casting-rolling speed is 800-1000mm / min. The aluminum alloy plate of the invention has uniform composition, is not easy to crack, and has good corrosion resistance.

Description

technical field [0001] The invention belongs to the field of aluminum alloy processing, in particular to an aluminum alloy plate on the water-contacting side of a radiator fin and a preparation method thereof. Background technique [0002] The 7XXX series aluminum alloy has the characteristics of high specific strength and stiffness, good processability, and excellent stress corrosion resistance, and has become one of the most important structural materials in the aerospace field. At present, researchers at home and abroad have studied 7075 alloy, 7475 alloy and 7050 alloy in 7XXX series aluminum alloys, but there is little research on 7072 alloy, which is mainly used in household air conditioners and automobile radiators. Shi Q et al. studied the electrochemical corrosion behavior of brazed and non-brazed AA4045 / 7072 / 3003 / 4045 clad plates under the influence of Zn and other alloying elements, and the results showed that Zn-rich 7072 aluminum alloys before and after brazing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/03C22C1/06B22D11/06
CPCC22C21/10C22C1/03C22C1/026C22C1/06B22D11/06
Inventor 郭宇航陈攀戴益波董松涛
Owner JIANGSU UNIV OF SCI & TECH