铸造铝合金具有一系列的优点,铝铸件已广泛应用于每个工业部门。但是,多年来由于铸造铝合金的机械性能低劣所决定,铝铸件一般使用于低负载下,虽然曾出现过高强度铸造铝合金,例如铝—镁系,抗拉强度为30kg/mm~2左右,但是它带来了铸造性能很差的恶果,所以在工业部门中不易普遍地采用。因为作为一种铸造的金属材料,先决条件是必须具有优 Cast aluminum has a series of advantages, aluminum casting has been widely used in each industrial sector. However, due to the poor mechanical properties of the cast aluminum alloy over many years, aluminum castings are generally used under low load. Although high strength cast aluminum alloys such as aluminum-magnesium series have been found, the tensile strength is about 30 kg / mm 2 , But it brings the bad result castability, so it is not easy to adopt in the industrial sector. Because as a kind of cast metal material, the prerequisite must be excellent