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Incorporation of low-grade scrap aluminum has four major characteristics

Published:2012-02-02 05:52:58 Source: Views:1693

Aluminum alloy doors and windows failed, due to use sunlight, air, rain and other effects, leading to deformation of aluminum, causing the glass to crack, fall off and so on.

Low-grade aluminum with the following four characteristics:
Thin oxide film thickness. National standards for architectural aluminum oxide film thickness should be not less than 10um (micron). Thickness is not enough aluminum surface easily rust and corrosion. Testing some of the proletarian name, address, production license, certificate of aluminum, the oxide film thickness of only 2 to 4um, and some do not even have the oxide film. According to expert estimates 1um oxide film thickness is reduced, power consumption per ton of profiles can be reduced cost 150 yuan.

Chemical composition failed. Incorporation of a large number of miscellaneous aluminum scrap aluminum can greatly reduce costs, but will lead to substandard construction chemical composition of aluminum, a serious threat to construction safety.

Reduce the profile thickness. 90 series sliding window type, according to national standards is not less than the minimum wall thickness aluminum 1.4mm, some of the products in Guangdong only 0.6 to 0.7mm. 46 series to bomb the door type, use the national standard aluminum wall thickness not less than the minimum 1.62mm, sampling, only some products in Guangdong 0.97 to 1.18mm.

Significant reduction in low-grade aluminum closing time, reducing the loss of chemical reagents, cost reduction, but the corrosion resistance profiles also greatly reduced.

edited by china stone coated metal roof tiles

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