Prediction Of Hydrogen Content On Aluminum Alloy

This paper made use of designing spinning rotor degassing of simulating equipment by ourselves, and observed the course of air bubble building and crashing and floating, the experimental results showed that, the effect of simulated course on the gas flux and the rotate speed and gas stress and so on, the air bubble volume reduces when the rotation speed is high, and the number of air bubble change too much, the gas pressure excessively small, oversized all can make uneven distribution of the air bubble. The experiment based on the comprehensive consideration of all factors, the choice has decided to the liquid aluminum in the best parameters. Meanwhile, it adopted that spinning rotor degassing methods of validating liquid simulated course by the casting aluminum 106.In this thesis, based on the purification method of molten Al alloy when using SGJ-I detecting instrument of the aluminum liquid refining effect to gain some kind of sample density, and analyze the rule among the surface pressing of aluminum and the cooling velocity and the crystallizing point and the hydrogen content with the casting poring form in definite condition, at the same time, a series of experiments have been made to gain the sample density in different time of removing gas, and analyze the relationship between the refining time and density. The results showed the density of reflecting the hydrogen content in aluminum alloy, and this result by way of accounting beginning condition of the mass transfer coefficient.This paper studied the corresponding relationship between the coefficient and the refining time in aluminum, and utilized the mass transfer coefficient to forecast the density with different time of removing gas in practical factory.