PROCÉDÉ D'IMPRÉGNATION DE NOYAUX CERAMIQUE POUR LA FABRICATION D'AUBES DE TURBOMACHINES
    47.
    发明公开
    PROCÉDÉ D'IMPRÉGNATION DE NOYAUX CERAMIQUE POUR LA FABRICATION D'AUBES DE TURBOMACHINES 有权
    方法对于陶瓷内核的TURBOMASCHINEN叶片的生产浸渍

    公开(公告)号:EP2825336A1

    公开(公告)日:2015-01-21

    申请号:EP13715309.4

    申请日:2013-03-12

    申请人: Snecma

    发明人: LANGLOIS, Chantal

    IPC分类号: B22C3/00 B22C9/10

    摘要: Impregnation method for mechanically reinforcing a ceramic core used in the manufacture of turbomachinery components by the lost wax casting method, involving dipping the core into a mixture obtained by dissolving polyvinyl alcohol in water, followed by an immersing of the core in pure water and hot polymerization, characterized in that the dosage is between 100 and 200 g of PVAl per litre of water. The dipping impregnation time is preferably between 20 min and 1h 30.