A corrosion-resistant aluminum alloy profile

Abstract

The invention discloses a production method of a corrosion-resistant aluminum alloy profile. The corrosion-resistant aluminum alloy profile comprises, by mass percent, 3%-8% of Cu, 2%-5% of Fe, 5%-9% of Mn, 1%-2% of Mg, 1%-2% of Zn, 0.3%-0.8% of Si, 0.1% of Ni, 0.05% of Ti and the balance Al. The materials are smelted for 6-8 hours at high temperature to obtain molten aluminum alloy; horizontal continuous casting is carried out on the obtained molten aluminum alloy and cleaning is conducted; the aluminum alloy profile is obtained through continuous extruding and forming; second-stage aging heat treatment is carried out on the obtained aluminum alloy profile, and a finished corrosion-resistant aluminum alloy profile product is obtained. The alloy production process is simplified and the alloy production period is shortened without homogenization and pre-heating treatment, and the energy-saving and environment-friendly production requirements of a short-process technology are completely met. Besides, the manufactured aluminum alloy profile has excellent corrosion resistance and tensile strength and can meet high-end requirements increasing day by day.

Description

technical field

[0001] The invention belongs to the technical field of metal material manufacturing, and in particular relates to a corrosion-resistant aluminum alloy profile and a production process thereof. Background technique

[0002] my country is already the world's largest producer, exporter and consumer of aluminum extrusions. At present, my country's aluminum extrusion industry has entered a new stage of scale and technological upgrading, and is in an important period of change and transformation. Now the aluminum alloy industry has been developing in the direction of producing environmentally friendly, low energy consumption, and excellent alloy properties.

[0003] In the existing complex aluminum alloys, there are many alloying elements and many phases, even in an equilibrium state, it is a completely solid-solution alloy, and eutectics often appear. In order to improve its corrosion resistance, European and American countries have successively developed overag...