Seamless aluminum pipe alloy for manufacturing power station indirect air-cooling condenser pipe bundle and application of seamless aluminum pipe alloy

Abstract

The invention discloses a seamless aluminum pipe alloy for manufacturing a power station indirect air-cooling condenser pipe bundle and application of the seamless aluminum pipe alloy. The alloy comprises, by mass, 0.05%-0.20% of Fe, 0.05%-0.20% of Si, 0.005%-0.05% of Cu, 0.005%-0.05% of Mg, 0.005%-0.05% of Mg, 0.05%-0.07% of Mn, 0.005%-0.05% of Ti and the balance Al. An aluminum pipe obtained by machining the alloy is used for the power station pipe bundle, so that the reliability of the pipe is greatly improved, the leakage rate of a product is reduced to 0.02% from 0.3%, and meanwhile, the corrosion resistance of the pipe is also greatly improved. The leakage rate of the aluminum pipe is increased to 0.02% from 0.3% in the prior art, the processability of the product is stably improved, the ductility is increased by 2%, the yield property is increased by 5 Mpa, and the manufacturing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of aluminum tube processing, and in particular relates to a seamless aluminum tube material alloy used for manufacturing indirect air-cooled condenser tube bundles in power stations and its application. Background technique [0002] At present, the seamless aluminum pipes used in the manufacture of indirect air-cooled condenser tube bundles in power stations are mainly high-frequency joined aluminum composite pipes. The main materials are 3003 and 3034. Method and hot extrusion seamless pipe method (perforation extrusion), due to the congenital defects of process and materials, resulting in poor stability of product quality and high leakage rate of pipes; at the same time, the cost of products remains high due to material compounding. [0003] The present invention has been made in view of this. SUMMARY OF THE INVENTION [0004] The technical problem to be solved by the present invention is to overcome th...

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Problems solved by technology

[0002] At present, the seamless aluminum pipes used in the manufacture of indirect air-cooled condenser tube bundles in power stations are mainly high-frequency aluminum composite pipes, the main materials are 3003 and 3034, and the preparation method is high-frequency welding of composite materials (strip materials). Due to the inherent defects of the process and materials, the stability of the product quality is poor, and the leakage rate of the pipe is high; at the same time, the cost of the product remains high due to the compounding of materials.

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