Process for manufacturing high-strength large-scale aluminum alloy plate

Abstract

The invention discloses a process for manufacturing a high-strength aluminum alloy plate, which comprises eleven steps of batching, smelting, checking, standing, casting, sawing and face milling, heat treatment, hot rolling, quenching, ageing and finished product shearing in turn. The manufacturing process radically changes the common phenomena of high energy consumption and high pollution in the conventional smelting furnace, meets the requirements of energy conservation and environmental protection, and the cast aluminum alloy plate has high mechanical property and good machining quality, and meanwhile the finished product rate and the production efficiency are effectively improved.

Description

Technical field: [0001] The invention relates to a manufacturing process of high-strength large-scale aluminum alloy plates. Background technique: [0002] In the prior art, the manufacturing process of aluminum alloy plates is constantly improving, but there are still the following deficiencies: 1. In the past, most of the heating energy of smelting furnaces used coal, fuel oil and electric power, etc., which not only pollutes a lot, but also causes a bad production environment. Moreover, the energy consumption is high, which is not conducive to the control of production cost; 2. After the metal raw material is smelted into a solution, it directly enters the casting machine for casting, so it is difficult to ensure the casting temperature of the solution, which makes the performance of the cast billet unstable, and also affects the finished product 3. The maximum length of aluminum ingots cast in the existing casting process is only 4 meters, which cannot meet people's need...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the manufacturing process of aluminum alloy plates is constantly improving, but there are still the following deficiencies: 1. In the past, most of the heating energy of smelting furnaces used coal, fuel oil and electric power, etc., which not only pollutes a lot, but also causes a bad production environment. Moreover, the energy consumption is high, which is not conducive to the control of production cost; 2. After the metal raw material is smelted into a solution, it directly enters the casting machine for casting, so it is difficult to ensure the casting temperature of the solution, which makes the performance of the cast billet unstable, and also affects the finished product 3. The maximum length of aluminum ingots cast in the existing casting process is only 4 meters, which cannot meet people's needs for large plates; 4. The heat treatment technology of blanks is single and backward, which not only affects the structure and performance of aluminum alloys Many adverse effects lead to the failure of the strength and hardness of the aluminum alloy sheet to meet the requirements, and also greatly affect the heat treatment production efficiency of the aluminum alloy