High-magnesium aluminum alloy state rolling preparation process

Abstract

The invention discloses a high-magnesium aluminum alloy state rolling preparation process, and relates to the technical field of aluminum alloy machining. The process aims to solve the problems that in an existing high-magnesium aluminum alloy machining hardening mode, the thickness and the width of a plate are limited, a stretcher with larger tensile force is needed during the tensile strength, and too many machining procedures are adopted. The process mainly comprises the steps of material proportioning, smelting, casting, soaking, sawing, surface milling, preheating, hot rolling and the like, reasonable selection of alloy components, and casting and smelting parameters is achieved, two-stage uniform heat treatment is adopted, and different hot rolling process parameters and the like areselected according to different Mg contents, so that a high-magnesium aluminum alloy plate material with excellent performance is obtained. According to the high-magnesium aluminum alloy state rolling preparation process, cold rolling is not needed, limitation to the thickness and the width is small, and stretching machining strengthening is not needed so that the production process can be simplified, the cost can be saved, and the production efficiency can be improved; and the performance of the rolled plate can be directly controlled through hot rolling, the plate can be made into hot rolled tissue, the production process is simpler and more efficient, and then the high-magnesium aluminum alloy plate material with good mechanical property and good corrosion resistance is obtained.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing, in particular to a high-magnesium aluminum alloy state rolling preparation process. Background technique [0002] Due to its high strength and good corrosion resistance, high-magnesium aluminum alloy plates are widely used in ships, armor, transportation and other fields. High-magnesium aluminum alloy is a kind of cold work hardening alloy. After the composition is fixed, the conventional work hardening methods are mainly cold rolling work hardening and tensile work hardening. The existing high-magnesium aluminum alloy work hardening method has the following disadvantages: (1) The thickness of cold rolling is generally limited to less than 10mm, which limits the production of thick plates; the width is generally less than 2600mm, which limits the production of ultra-wide plates; (2) Tensile strengthening requires Stretching machines with relatively high tensile force are easy t...

AI Technical Summary

Problems solved by technology

The existing high-magnesium aluminum alloy work hardening method has the following disadvantages: (1) The thickness of cold rolling is generally limited to less than 10mm, which limits the production of thick plates; the width is generally less than 2600mm, which limits the production of ultra-wide plates; (2) Tensile strengthening requires Stretching machine with a large tensile force is easy to break the plate when the stretching rate is large; (3) There are many production processes, which increase the production cost, low production efficiency, and slow cycle; (4) The corrosion performance of the plate is unstable

However, it is strengthened by stretching, which still cannot solve the problem that the stretching machine requires a large tensile force during stretching, and it is easy to break the board when the stretching rate is large. At the same time, the stretching machine and sawing process are added. lead to an increase in production cycle and cost

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