Abstract
It is well known that aluminum alloy die-castings contain a large amount of gases. However, there have been seldom reports on the content and composition of those gases.In this experiment, vacuum fusion method was applied to the determination of gas content in a certain aluminum alloy die-castings and hydrogen content in the gas was determined by measuring pressure difference between before and after heating a palladium tub econnected to gas analyzer.The present results showed that the die-castings contained gases of 20-30cc NTP/100g Al, and 70-80% of the total volume hydrogen whose source was found to be the lubricant for sleeve and die.
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