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AssigneeHowmet Corporation
InventorsRussell Vogt, Kenneth Murphy, John He, Robert Hrubec, Gail Cole, Robert Grunstra
Estimating the term…
Glass-forming die, such as a parsain-forming or bottle-forming die, includes a die body having a molding surface with a curved contour to form at least a portion of a glass bottle or other article to be made. The die body has one or more cooling passages inside the body wherein the cooling passages is/are non-linear (non-straight) along at least a portion of their length to improve temperature control of the die during the glass forming operation. To this end, the cooling passages are curved in a manner to generally follow the curved contour along at least a portion of the length of the curved contour, and may include heat radiating or turbulating elements in the cooling passage. The glass-forming die alternately, or in addition, can include integral cooling fins, ribs or other heat radiating element on one or more exterior regions of the die.
A glass-forming die, comprising a die body having a molding surface with a curved contour to form at least a portion of a glass article to be made, said body having at least one cooling passage in the body, said at least one cooling passage being non-linear along at least a portion of its length.
A glass-forming die, comprising a die body having a molding surface with a curved contour to form at least a portion of a glass article to be made and further having at least one heat radiating element on an exterior region of said die body in a manner to improve removal of heat from said region.
A method of making a glass-forming die, comprising forming a fugitive pattern having a shape of the die to be made, said pattern having a curved contour surface that is a precursor to a curved contour molding surface of the die to be made and having at least one fugitive refractory core disposed inside the pattern and being non-linear along at least a portion of its length, investing the pattern in a refractory material to form a refractory mold on the pattern, removing the pattern from the mold, leaving the core in the mold, introducing molten metallic material in the mold for solidification therein to form said die, and removing the core from the die.
A method of making a glass-forming die, comprising forming a fugitive pattern having a shape of the die to be made, said pattern having a curved contour surface that is a precursor to a curved contour molding surface of the die to be made and having at least one permanent tubular member disposed in the pattern and being non-linear along at least a portion of its length, investing the pattern in a refractory material to form a refractory mold on the pattern, removing the pattern from the mold, leaving the tubular members in the mold, and introducing molten metallic material in the mold about the tubular members for solidification therein to form said die having tubular members therein.
A method of making a glass-forming die, comprising forming a fugitive pattern having a shape of the die to be made, said pattern having at least one heat radiating element on an exterior region of said pattern, investing the pattern in a refractory material to form a refractory mold on the pattern, removing the pattern from the mold, and introducing molten metallic material in the mold for solidification therein to form said die.
Method of removing heat from a glass-forming die, comprising flowing a cooling fluid through at least one cooling passage in a die body having a molding surface with a curved contour to form at least a portion of a glass article to be made wherein the cooling passage is non-linear along at least a portion of its length proximate the molding surface.
Dependencies are inferred from the claim text.