METHOD OF MAKING METAL CASTING MOLD, AND MOLD
First Claim
1. A method of making a metal casting mold, comprising the steps of:
- covering a support pattern by a pulp-molded element;
installing a mold flask provided with a depressurizing device, on an upper side of the pulp-molded element;
packing heat-resistant particles inside the mold flask;
providing a sealing member on an upper surface of the mold flask so as to seal the inside of the mold flask;
depressurizing the inside of the mold flask by the depressurizing device, to form a mold comprising the mold flask, the heat-resistant particles, the pulp-molded element and the sealing member; and
separating the pulp-molded element from the support pattern.
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Accused Products
Abstract
A method of making a metal casting mold is disclosed. The method comprises the steps of: covering a support pattern by a pulp-molded element; installing a mold flask provided with a depressurizing device, on an upper side of the pulp-molded element; packing heat-resistant particles inside the mold flask; providing a sealing member on an upper surface of the mold flask so as to seal the inside of the mold flask; depressurizing the inside of the mold flask by the depressurizing device, to form a mold comprising the mold flask, the heat-resistant particles, the pulp-molded element and the sealing member; and separating the pulp-molded element from the support pattern. A metal casting mold made by this method is also disclosed.
12 Citations
18 Claims
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1. A method of making a metal casting mold, comprising the steps of:
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covering a support pattern by a pulp-molded element; installing a mold flask provided with a depressurizing device, on an upper side of the pulp-molded element; packing heat-resistant particles inside the mold flask; providing a sealing member on an upper surface of the mold flask so as to seal the inside of the mold flask; depressurizing the inside of the mold flask by the depressurizing device, to form a mold comprising the mold flask, the heat-resistant particles, the pulp-molded element and the sealing member; and separating the pulp-molded element from the support pattern.
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2. A metal casting mold comprising:
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a pulp-molded element covering a support pattern; a mold flask provided with a depressurizing device and installed on an upper side of the pulp-molded element; heat-resistant particles packed inside the mold flask; and a sealing member provided on an upper surface of the mold flask so as to seal the inside of the mold flask, wherein the depressurizing device is operable to depressurize the inside of the mold flask, thereby forming a mold comprising the mold flask, the heat-resistant particles, the pulp-molded element and the sealing member, and allowing the pulp-molded element to be separated from the support pattern. - View Dependent Claims (3, 4, 5, 6)
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7. A method of making a metal casting mold, comprising the steps of:
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forming a pulp-molded element by using a paper-making pattern mold having a screen provided on a surface thereof; installing a mold flask provided with a depressurizing device, on an upper side of the pulp-molded element; packing heat-resistant particles inside the mold flask; providing a sealing member on a back surface of the mold flask so as to seal the inside of the mold flask; depressurizing the inside of the mold flask by the depressurizing device, to form a mold comprising the mold flask, the heat-resistant particles, the pulp-molded element and the sealing member; and separating the pulp-molded element from the paper-making pattern mold. - View Dependent Claims (10, 13, 14, 15, 16, 18)
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8. A method of making a metal casting mold, comprising the steps of:
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forming a pulp-molded element by using a paper-making pattern mold having a screen provided on a surface thereof; transferring the pulp-molded element to a support pattern; installing a mold flask provided with a depressurizing device, on an upper side of the pulp-molded element; packing heat-resistant particles inside the mold flask; providing a sealing member on a back surface of the mold flask so as to seal the inside of the mold flask; depressurizing the inside of the mold flask by the depressurizing device, to form a mold comprising the mold flask, the heat-resistant particles, the pulp-molded element and the sealing member; and separating the pulp-molded element from the support pattern. - View Dependent Claims (11)
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9. A method of making a metal casting mold, comprising the steps of:
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forming a pulp-molded element having a core shape with at least one opening, by a combinational paper-making pattern mold having a molding surface divided into a plurality of regions and covered by a screen; inserting a depressurizing device from the opening into the pulp-molded element, and packing heat-resistant particles inside the pulp-molded element; sealing the opening of the pulp-molded element so as to prevent discharge of the heat-resistant particles packed inside the pulp-molded element; depressurizing the inside of the pulp-molded element by the depressurizing device, to form a core-shaped mold comprising the heat-resistant particles and the pulp-molded element; and separating the core mold having the pulp-molded element as a surface thereof, from the combinational paper-making pattern mold. - View Dependent Claims (12, 17)
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Specification