先进材料疑固实验室 Laboratory of Advanced Materials Solidification Sand mold heat exchange For sand casting: Ti(Gin-Ta)er 砂型 困相 液相 Derivate of x is Heat flux went through the interface: 9x=-0=-mx=0 Then 距离x 9x=0= Amcmem (Tm-To) Sand Casting πt vanced Maten 上浒充通大学 SHANGHAI JIAO TONG UNIVERSITYFor sand casting: Derivate of x is Heat flux went through the interface: Then Sand Casting Sand mold heat exchange