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Antibiotic corrosion resistant aluminum alloy heat exchange plate

A technology of heat exchange plate and aluminum alloy, which is applied in heat exchange equipment, lighting and heating equipment, etc. It can solve the problems of preferential corrosion of joints, increase of heat exchanger manufacturing cost, high cost of powder solder, etc., and achieve improved corrosion resistance , good antibacterial properties, and the effect of reducing the tendency of intergranular corrosion

Inactive Publication Date: 2012-01-25
SUZHOU FANGJIYUAN ENERGY SAVING TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

In the former case, due to the high cost of the powdered brazing material, the manufacturing cost of the heat exchanger is increased. The amount of Zn remaining on the outer surface of the refrigerant passage pipe does not reach the amount of Zn required as a sacrificial anode material, resulting in failure to obtain a sufficient anti-corrosion effect of the refrigerant passage pipe, or because molten solder containing Zn flows to the junction, Causes preferential corrosion of joints

Method used

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Embodiment Construction

[0022] The present invention will be further explained and described below in conjunction with specific embodiments.

[0023] According to the mass percentage shown in Table 1, according to the mass percentage shown in Table 1, the Al alloy material described in the present invention was prepared. The specific preparation process is as follows: heating the alloy raw materials of Si, Mn, Zn, Cu, Ag and Al according to the above weight percentages to 650 °C for 120 min under a nitrogen protective atmosphere; adding 0.3wt of the total weight of the alloy raw materials % MnCl 2 , stirred for 75 min; then the alloy liquid was poured into shape; the casting temperature was 650 °C; then it was kept at 480 °C for 2 h for homogenization treatment, and cooled to obtain the aluminum alloy material of the aluminum alloy heat exchange plate. It is then processed into an aluminum alloy heat exchange plate.

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Abstract

The invention relates to an antibiotic corrosion resistant aluminum alloy heat exchange plate, which is characterized by being prepared from the following materials: 0.5 to 1.2 weight percent of Si, 0.5 to 1.8 weight percent of Mn, 0.25 to 1.8 weight percent of Zn, 0.20 to 0.55 weight percent of Cu, 0.01 to 0.02 weight percent of Ag and the balance Al and inevitable impurities. Security compass web application auditing tool (SWAAT) experiments are adopted for testing the corrosion behavior of the alloy material and show that the corrosion resistance of the aluminum alloy is obviously improved, and in addition, the aluminum alloy heat exchange plate has good antibacterial property and has more than 99 percent antibacterial rate on colon bacilli and staphylococcus aureus.

Description

technical field [0001] The invention relates to a radiator component, in particular to an aluminum alloy heat exchange plate, which has the effect of antibacterial and corrosion resistance. Background technique [0002] Aluminum alloys that are lightweight and have good thermal conductivity have been used in heat exchangers such as evaporators and condensers. Usually, these heat exchangers are manufactured by, for example, bending sheet materials or laminating sheets formed by press working to form cooling flat tubes for the working fluid. [0003] In terms of corrosion resistance, due to corrosion from the outer surface and inside, when a breakthrough occurs in the refrigerant passage pipe prematurely, the refrigerant leaks and cannot function as a heat exchanger. Anti-corrosion treatment is applied to the outer surface of the tubes, thereby prolonging the life of the heat exchanger. Conventionally, the method of coating the outer surface of a plate with an Al-Zn alloy as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/10C22C21/18F28F21/08
Inventor 杨贻方
Owner SUZHOU FANGJIYUAN ENERGY SAVING TECH
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