Sequential mold filling
AssigneeHowmet Corporation
InventorsBrian D. Przeslawski, Rajeev V. Naik
Life of this patent
Estimating the term…
Abstract
Method and apparatus for casting molten metal or alloy into a plurality of molds that are connected by mold ingate passages in melt flow communication to a melt supply passage which is configured in a manner to completely or partially fill the molds with the molten metal or alloy sequentially one after another. Filling of the molds in this manner provides uniform mold filling, reduces foreign matter in molds filled after the first-filled mold, and improves quality of the cast articles.
Claims8
Method for casting molten metal or alloy, comprising providing metal or alloy melt in a melt-containing mold cup of a mold assembly and supplying the melt from the mold cup to a first melt supply passage of the mold assembly to which a first plurality of molds are connected in melt flow communication in series arrangement one after another and supplying the melt from the first melt supply passage via a melt supply connector passage to a second supply passage to which a second plurality of molds are connected in melt flow communication in series arrangement one after another such that the first plurality of molds are at least partially filled before the second plurality of molds.
Method for casting molten metal or alloy, comprising providing metal or alloy melt in a melt-containing mold cup of a mold assembly and supplying the melt from the mold cup to a plurality of molds that are connected in melt flow communication at different elevations in series arrangement one after another with the molten metal or alloy being supplied to the bottom of each mold in the series by a melt supply passage extending from the top of the preceding mold in the series.
Mold assembly for casting molten metal or alloy melt, comprising a melt-containing mold cup, a melt supply passage in melt flow communication to the mold cup, and a plurality of molds that are connected in melt flow communication to the melt supply passage in series arrangement one after another wherein adjacent molds of the series are connected in melt flow communication by a respective melt supply passage extending from a top region of a preceding mold to a bottom region of a next succeeding mold to provide top-to-bottom molten metal flow relation between adjacent molds, and wherein the respective melt supply passage is configured in a manner that each of the molds of the series is at least partially filled before the next mold in the series is at least partially filled.
Dependencies are inferred from the claim text.