The results show that the application of DST and DPT during mold filling of magnesium die casting leads to the decrease of filling pressure and the decrease of surface quality of the castings.

• 结果表明： 镁合金压铸充型过程中采用减速或减压工艺会造成型腔内充填压力降低， 导致铸件表观质量下降；