Introduction of the casting process of 6082 aluminum plate

- Oct 11, 2018-

6082 aluminum plate (component) 6082 belongs to 6××× series (Al-Mg-Si) alloy aluminum plate. It is a heat-resistant and reinforced aluminum alloy plate with medium strength and good welding performance and corrosion resistance. It is mainly used for transportation. And structural engineering industry. Such as bridges, cranes, roof structures, transport planes, transport ships, etc. In recent years, with the rapid development of the shipbuilding industry at home and abroad, reducing the weight of the hull, increasing the speed of the ship, and seeking aluminum alloy materials instead of steel parts have become an important issue for the aluminum processing industry and the shipbuilding industry. The 6082 aluminum alloy sheet has medium strength and good corrosion resistance and is light weight, making it an ideal material for the manufacture of high speed marine components.

Melting process

1.Smelting

6082 alloy is characterized by Mn, Mn is a refractory metal, and the melting temperature should be controlled at 740-760 °C. Stir twice or more before sampling to ensure complete melting of the metal, accurate temperature and uniform composition. After stirring, take a sample in the middle of the depth of the aluminum liquid and the left and right sides of the furnace for analysis.

2. Purification and Casting

After the melt was transferred to a static furnace, it was sprayed with a nitrogen gas and a refining agent, and jet-refined, and the refining temperature was 735-745 ° C for 15 minutes, and it was allowed to stand for 30 minutes after the refining. Through this process, the gas is removed, the slag is removed, and the melt is purified.

During the casting, there are two filtering devices between the mold and the furnace mouth. The furnace mouth is filtered by a ceramic foam filter plate (30PPI). Before casting, it is filtered with 14 mesh glass fiber cloth to fully filter the oxide and slag in the melt.

The casting temperature of 6082 alloy aluminum plate is relatively high (compared with the normal process of 6063 aluminum plate), the casting speed is low, and the water flow rate is too large. The above process needs to be strictly controlled and cannot exceed the range, otherwise it will easily lead to casting failure.