Preparation process of medium-strength anti-corrosion high-magnesium aluminum alloy plate

Abstract

The invention discloses a preparation process of a medium-strength anti-corrosion high-magnesium aluminum alloy plate and belongs to the technical field of aluminum alloy machining. The preparation process of the medium-strength anti-corrosion high-magnesium aluminum alloy plate comprises batching, smelting, degassing and filtering, casting, homogenizing annealing, saw cutting and milling, preheating, hot rolling, edge-cutting or cross-cutting uncoiling, drawing and saw cutting, wherein the drawing refers to performing edge-cutting processing on the plate after natural cooling and then drawing the plate on a drawing machine by the drawing amount of 3-7%. Compared with a high-magnesium aluminum alloy plate prepared by use of a traditional cold rolling method, the preparation process is capable of breaking through the limitation of the opening degree of a cold-rolling mill and producing a thick plate; the obtained plate is high in straightness, low in internal stress, even in cold deformation and excellent in corrosion property.

Description

technical field

[0001] The invention relates to the technical field of aluminum alloy processing, in particular to a preparation process of a medium-strength corrosion-resistant high-magnesium aluminum alloy plate. Background technique

[0002] High-magnesium aluminum alloy plate is widely used in ships, armor, transportation and other fields. Compared with steel, the advantages of aluminum alloy are: low density, corrosion resistance, non-magnetic, good performance in low temperature environment and so on. Therefore, it is the general trend to replace steel with aluminum in the above-mentioned transportation industry.

[0003] The production method of high-magnesium aluminum alloy high-strength and corrosion-resistant plates is mainly cold rolling work hardening process. The typical production process of rolled plate is as follows: batching; smelting; refining, degassing, filtering; casting; homogenizing annealing; sawing head and tail; milling; preheating; ;Crosscutting...