Research on Heat Treatment of Magnesium Alloy Die-casting Die
The effects of different cooling methods of quenching and surface strengthening processes on the surface hardness,wear resistance,corrosion resistance at high temperature and layer depth of magnesium alloy die-casting die samples were studied.The results show that in comparison with common oil cooling and ion nitriding,grade cooling of quenching and combined strengthen heat treatment which was solid vanadinizing with rare earth yttrium after ion nitriding,can effectively improve the wear resistance and corrosion resistance at high temperature of magnesium die-alloy casting die.The grade cooling of quenching and combined strengthen heat treatment have stronger practicability.