Magnetized Casting Inorganic Materials (water, Sodium Silicate) Performance

The paper is mainly studied the effects on properties of silicate bonded sand and inorganic material for foundry (water, sodium silicate) of different magnetic fields (0~1T) by ultra-strong magnetic device.The paper studied the change of physical and chemical properties of water after magnetization. Experiment results point that the electric conductivity and PH value are in a reducing trend. Although surface tension reduces too, but in a nonlinear way, the relation between surface tension and magnetic conduction intensity is multi-extreme num relation. In order to further study, the paper calculated the internal energy of water molecules by molecular dynamics simulations. The results point that the relation between the internal energy of water and magnetic conduction intensity is also multi-extreme num relation, the trend agrees with the experiment result, it proves that the simulation method is reasonable and comparable.The viscosity of sodium silicate may be reduced, thus the bond strength may be increased by magnetization. The magnetization result differs in different magnetic fields. The results point that the bond strength of foundry sand may be maximum increased by 46% in magnetic field of 0.9-IT. The aging level of sodium silicate will impact the effects of magnetization. The magnetization result of aged sodium silicate rested for long time is obvious. As the bond strength of silicate bonded sand will be increased by magnetization, the additional level of silicate bonded sand may be reduced, thus improving the collapsibility of the silicate bonded sand, yielding better economic and social returns.