A kind of preparation method of aluminum strip for high-speed rail sound barrier

Abstract

A production method for aluminum tape for a high-iron sound barrier comprises the steps that by weight percentage, 70-80% of electrolytic aluminum liquid, 10-20% of aluminum ingot with the aluminum content larger than or equal to 99.7% and aluminum alloy solid waste are put into a smelting furnace together and smelted, aluminum melt is produced, an aluminum roll with the thickness of 3-5 mm is produced by the adoption of a continuous casting rolling process, and finally the aluminum tape which is 1.0-2.0 mm thick and used for the high-iron sound barrier is produced through cold rolling, cleaning and side scrapping, finished product annealing, longitudinal shear and roll backing and inspection and packaging, wherein the cleaning and side scrapping, the longitudinal shear and roll backing and the inspection and packaging are conducted according to the conventional process, the technological process is shortened, the production cost is lowered, and the tensile strength of the produced aluminum tape can reach 240-280 MPa, the elongation is larger than or equal to 15%, and the aluminum tape does not crack when bent by 90 degrees.

Description

technical field [0001] The invention belongs to the field of new material research, in particular to a method for preparing an aluminum strip for high-speed rail sound barriers. Background technique [0002] The sound barrier for high-speed rail is a new type of product using honeycomb sound insulation technology. Generally, reinforced concrete sound barriers or aluminum metal sound barriers are used. Although the former has low manufacturing cost in the early stage, its service life is short and it forms construction waste, causing solid waste pollution, and its use is greatly restricted. The latter can not only achieve high strength after special alloy composition adjustment, physical painting and other treatments, but also has good self-corrosion ability, which can effectively prolong the service life. Recycling and secondary utilization by means of melting and other methods will not cause any impact on the environment. [0003] Aluminum metal sound barriers are general...

AI Technical Summary

Problems solved by technology

[0020] The tensile strength of the aluminum strip prepared above can reach 240Mpa and can be bent at 90° without cracking, but there are problems such as long production cycle and high cost. Therefore, it is necessary to seek a preparation method that can reduce production cost and shorten delivery time. Important research topic of aluminum strip for sound barrier

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