Shell metal core box structure and method
AssigneeHoneywell International Inc.
InventorsYathiraj Kasal, Michael G. Volas
Life of this patent
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Abstract
A structure and method are provided for forming a box for molding an article for use in casting. A wall defines a cavity formed in a shape of the article and configured to receive a material for forming the article. A rim is disposed around the wall and extends therefrom defining a hollow back on an opposite side of the wall from the cavity. A lattice structure formed in the hollow back and is connected with the wall and with the rim. The box may be formed by additive manufacturing.
Claims18
A box for forming an article for use in casting comprising:
- a wall with a cavity defined in the wall, the cavity formed in a shape of the article and configured to receive a material for forming the article;
- a rim disposed around the wall and extending therefrom defining a hollow back on an opposite side of the wall from the cavity;
- and
- a lattice structure formed in the hollow back and connected with the wall and with the rim, wherein the wall, the rim and the lattice comprise a metal material.
A method of making a box for forming an article for use in casting, comprising:
- forming, by additive manufacturing, the box in a shell-like shape with a wall contoured in a desired article shape so that a cavity is defined in a front of the wall and is configured for receiving a material for forming the article;
- forming a rim around the wall so that the box has a hollow back with a lattice structure formed in the hollow back to support the wall and the rim;
- and forming the wall, the rim and the lattice of a metal material.
A method of making a box for forming an article for use in casting, wherein the box has a rim with opposite first and second sides connected by a wall, the method comprising:
- forming, by additive manufacturing, the first side;
- forming, by additive manufacturing, a lattice and the wall on top of the first side;
- forming, by additive manufacturing the second side on top of the lattice and the wall;
- wherein the box has a shell-like shape and the wall is contoured in a desired article shape so that a cavity is defined in a front of the wall and is configured for receiving a material for forming the article, wherein the lattice is formed on an opposite side of the wall from the cavity;
- and forming the wall, the first side, the second side and the lattice of a metal material.
Dependencies are inferred from the claim text.