A kind of high-magnesium 5 series aluminum alloy box die forging method

Abstract

The invention discloses a high-magnesium 5-series aluminum alloy box die forging method. The weight percentage of magnesium in a high-magnesium 5-series aluminum alloy is greater than that of magnesium in a 4.5% 5-series aluminum. The die forging method mainly comprises the following steps of (1) alloy casting; (2) homogenization treatment; (3) die forging; (4) stabilizing treatment; and (5) machining. Through the high-magnesium 5-series aluminum alloy box die forging method, the bottleneck of the high-magnesium 5-series aluminum alloy die forging process is overcome. A high-magnesium 5-seriesaluminum alloy box produced through the method is excellent in mechanical performance, good in surface quality, stable in size, high in rate of finished products and low in cost.

Description

technical field [0001] The invention relates to the field of forged aluminum alloy profiles for ships, in particular to a die forging method for a high-magnesium 5-series aluminum alloy box body. Background technique [0002] In the field of aluminum alloy profiles for ships, the type of aluminum alloy is generally 5 series aluminum alloys, because the use environment in the ocean is a highly corrosive environment, and the corrosion resistance of the alloy profiles is strictly required. However, the Mg content in the 5-series aluminum alloy is relatively high, which will cause the forgeability of the 5-series alloy to be significantly lower than that of other series of aluminum alloys, such as the 2-series and 6-series, etc. High deformation is difficult to achieve. [0003] At present, the processing of cabinets similar to the 5 series usually adopts conventional forging methods, forging aluminum alloy ingots into blocks, and then removing materials for processing, althoug...

AI Technical Summary

Problems solved by technology

However, the processing method of this kind of box body has a large amount of processing, nearly 70% or more, so the cost is high; at the same time, the flow ability of the 5 series aluminum alloy is not good, and the blank part will be insufficiently deformed and strengthened during the forging process. , resulting in forging failure, which reduces the yield of parts

[0004] In comparison, during the die forging process, the deformation of the aluminum alloy ingot is large, the strengthening effect is good, and the alloy flow is good, but the traditional die forging process is not suitable for the 5 series aluminum alloy with a high magnesium content, which will cause The cracking of the die forging eventually caused the forging failure of the box body

Images