Effects of Gas-powder Compound Refining Method on Purification of ZL205A
The compound refining of ZL205A alloy with flux(powder),rotating jet(argon)in different sequences and rotating jet(argon and powder)was carried out,and the purification effects of different gas-powder compound meth-ods were compared and analyzed by hydrogen meter,metallography microscope,tensile testing machine and scanning electron microscope.The results indicate that the flux can increase the interfacial activity between inclusion and melt and reduce the viscosity of aluminum liquid.The combination of flux and rotating jet argon has a great influence on degassing and impurity removal of ZL205A alloy.The optimal purification effect is obtained by rotating jet,where the hydrogen content of melt is decreased from 0.176 mL/(100 g)Al to 0.087 mL/(100 g)Al,and the yield strength,tensile strength and elongation of the alloy are increased by 19.2%,18.3%and 100%,respectively,compared with those of unrefined alloy.
NETL
NSTL
万方数据
