Gas Pressures on the Mold/Metal Interface
The pressures associated with the formation of intrusive blowhole by gas expansion rate permeability property and moulding sand structure paronters were discussed.The results show that the gas evolution rate is the same as the permeability of the mold,Pressure of in the mold/metal interface is maximum.And the formula can calculate the maximum gas pressure and according to this to modify the technology prameters.