The addition of
aluminum strontium alloy to the aluminum alloy has a metamorphic effect, which can effectively refine the eutectic silicon and primary silicon in the alloy, and improve the mechanical properties of the alloy. Its modification has good long-term performance, remelting stability and The resistance to decline is better. The amount of strontium added is generally controlled between 0.02-0.04%; for example, the content of strontium in aluminum-strontium alloy is 10%, and the addition ratio is between 0.2-0.4%. Adding method: preheat the strontium alloy to 200-300 degrees, add in proportion before degassing.
