An alloy part is cast in a mold (280) having a part forming cavity (292, 294, 296). The method comprises pouring a first alloy into the mold. The pouring causes: a surface (550) of the first alloy in the part forming cavity to raise relative to the part forming cavity; a branch flow of the poured first alloy to pass upwardly through a first portion (304) of a passageway; and the branch flow to pass downwardly through a second portion (310), of the passageway; solidifying some of the first alloy in the passageway to block the passageway while at least some of the first alloy in the part forming cavity remains molten. A second alloy is poured into the mold atop the first alloy and solidified.
申请公布号
EP2931458(A2)
申请公布日期
2015.10.21
申请号
EP20130862454
申请日期
2013.12.13
申请人
UNITED TECHNOLOGIES CORPORATION
发明人
BULLIED, STEVEN J.;SHAH, DILIP M.;CETEL, ALAN D.;MARCIN, JOHN J.