Casting method of high-magnesium aluminum alloy

Abstract

The invention discloses a casting method of a high-magnesium aluminum alloy, and belongs to the field of alloy preparation. The casting method comprises the following steps that S1, materials are prepared, and an aluminum ingot, a magnesium ingot and other required alloy elements are prepared; S2, the aluminum ingot is smelted, and other required alloy elements are added after the aluminum ingot is molten; S3, a refining agent is added, and after fully stirred, the refining agent stands, and the magnesium ingot is added until the magnesium ingot is completely molten; S4, a grain refining agentis added and slag is removed; and S5, a high-magnesium aluminum alloy cast ingot is prepared by adopting a rotary crystallization method, and when rotary crystallization is carried out, the rotatingspeed is 300-3000 rpm, the gravity coefficient G is 50-300, and the casting temperature is 700-760 DEG C; and the prepared ingot is cooled to the room temperature. The casting method has the advantagethat the high-magnesium aluminum alloy casting mode is provided, and the aluminum alloy with higher casting performance and deformation performance is prepared.

Description

technical field

[0001] The invention relates to the field of alloy processing, in particular to a casting method of a high-magnesium aluminum alloy. Background technique

[0002] Under the background of the current era, lightweight and high-strength materials have gradually replaced steel materials and become a trend in people's production and life, especially aluminum-magnesium alloys have become a research hotspot due to their low density, high strength, and good corrosion resistance.

[0003] The content of magnesium in the commonly used aluminum-magnesium alloys is generally lower than 7wt%. Although the density of aluminum-magnesium alloys is approximately 1 / 3 of that of steel, there is still a certain gap in strength compared to steel. This is the current aluminum-magnesium alloy. One of the reasons why alloys cannot substantially replace steel. The aluminum-magnesium alloys prepared by the traditional method often have shrinkage porosity, which reduces the density of...