摘要:In this paper, the ceramic shell process of expanded polystyrene (EPS) patterns was studied. The process of the step-raising-temperature was put forward to fire to remove EPS patterns and strengthen ceramic shell. Furthermore, the smoothing agent of surfaces was studied to improve the surface quality of castings.
摘要:A new principle and means of dynamic measuring of non-metallic inclusions in melten aluminium has been proposed and investigated by simulative techniques in this paper. A measuring principle has been established and verified quantitatively in simulative tests. The principle and means provides the basis for choosing the parameters and improving accurcy of assessment.
摘要:In order to produce wearing hardness particle, we added M alloy belement , observed the morphology of hardness panicle by electron microscope, and probed ingradient distribution by electron scanning.Testing results show that.it is able to replace tin-bronze. It adapts to be maked some bushes,sleeves and turbines which using in heavy load and low speed.