公开(公告)号：EP1268104A1

公开(公告)日：2003-01-02

申请号：EP01921182.0

申请日：2001-03-09

申请人： ACTech GmbHAdvanced Casting Technologies Giessereitechnologie

发明人： VOIGT, Heiko ,  DEMARCZYK, Norbert

IPC分类号： B22D27/15 ,  B22D15/02 ,  B22D27/04

CPC分类号： B22C9/103 ,  B22C9/106 ,  B22D15/02 ,  B22D27/045 ,  B22D27/15 ,  B33Y80/00

摘要： The invention relates to a method for the uphill casting of cast pieces in sand dies with resinous, or, in particular, binder-containing cast cores and controlled solidification of metallic cast pieces, comprising at least one cavity. Said pieces are, in particular, prototypes of engine blocks, or cylinder heads, for example, for internal combustion engines, with a cavity for the throughflow of cooling water. In order to guarantee a low-turbulence flow of fluid metal melt on ventilating the cast mould, the cast mould (1), with at least one feed (24), is connected to a sprue cup (24) by means of a casting system (22) and the metal melt contained therein forced into the cast mould (1) through the casting system (22) by gravity. After filling the cavity (11") a vacuum is created in the metal melt, greater than the pressure of core gases generated in the core. Air cushions in the mould are, thus, prevented from impeding the filling of the mould and, by means of the above method, impervious, pore-free, mechanically sound cast pieces are produced.

摘要翻译： 描述了一种用于在具有高树脂浇铸芯或特别是含有粘合剂的铸芯的砂模中进行上坡铸造的方法，并且具有至少一个空腔的金属铸件的定向凝固。 特别地，这些是发动机缸体或气缸盖的原型，例如为内燃机提供冷却水流过的空腔。 为了在铸模脱气期间提供液体熔融金属的低湍流，铸模具有至少一个通过铸造系统连接到进料漏斗的进料头，并且其包含的熔融金属是 通过重力通过铸造系统移动到铸模中，熔融金属中的空腔在填充后经受比压力更大的压力，该压力大于芯中形成的核心气体的压力。 这消除了从模具中的气穴填充模具的障碍。 同时，通过该方法生产致密和无孔的机械强度铸造件。