公开(公告)号：US5584334A

公开(公告)日：1996-12-17

申请号：US350294

申请日：1994-12-06

申请人： James L. Oswald ,  Paul M. LeTarte ,  Paul A. Ballas ,  David L. Mitchell

发明人： James L. Oswald ,  Paul M. LeTarte ,  Paul A. Ballas ,  David L. Mitchell

IPC分类号： B22D27/08 ,  B22D27/20

CPC分类号： B22D27/08 ,  B22D27/20

摘要： A method in particular, comprises the steps of: (a) preparing a mold having a sprue leading to a substantially horizontally oriented runner, at least one riser extending from the runner, and walls defining a mold cavity in communication with the riser; (b) providing a shallow reaction chamber in the runner containing grain refining inoculant solids therein, the inoculant having a surface exposed substantially tangentially to the flow of molten metal through the runner; (c) pouring a charge of molten aluminum into the sprue with a sufficient pressure head to fill the cavity, the flow being substantially laminar through the runner; and (d) inverting the mold substantially immediately after mold filling and prior to solidification of the metal in the mold cavity.

摘要翻译： 特别地，一种方法包括以下步骤：（a）制备具有通向基本上水平定向的浇道的浇道的模具，至少一个从流道延伸的提升管和限定与提升管连通的模腔的壁; （b）在所述流道中提供含有晶粒细化孕育剂固体的浅反应室，所述孕育剂具有基本上相对于流过所述流道的熔融金属流动而暴露的表面; （c）用足够的压头将熔融铝浇注到浇口中以填充空腔，该流动基本上穿过流道层流; 和（d）在模具填充之后并且在模具腔内的金属凝固之前基本上立即翻转模具。