The formation reasons of magnesium alloy die castings porosity

    The formation reasons of porosity of magnesium alloy die castings, one is  because the gas is separated from the liquid during the cooling process, mainly hydrogen, the other is into the air in the casting process. The ability of magnesium dissolved hydrogen is very strong, even if only a very small amount of water in the ingot, may also be because the water is reduced and the absorption hydrogen. However, the nitrogen generating nitride, oxygen to produce oxide. Therefore, the effects of air is smaller, The temperature of the air is concerned with the gas content, so the magnesium alloy die casting materials must be thoroughly dried before they can cast furnace melting.

The above article from KENOS official website (http://www.kenos-diecasting.com/)
The original address: http://www.kenos-diecasting.com/news_show_84.html, reproduced please specify. kenosblog1507