Cast core insert out of etchable material
AssigneeApple Inc.
InventorsChristopher D. Prest, Matthew S. Scott, Stephen P. Zadesky, Dermot J. Stratton, Joseph C. Poole
Life of this patent
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Abstract
Provided in an embodiment is a method for molding, including: providing a molten alloy in a space between a mold cavity and an etchable block shaped to form an undercut on a part formed in the space, cooling the molten alloy to form the part with the undercut, and etching the etchable block. An undercut is a beveled edge caused by an etchant attacking an etchable block laterally and optionally vertically. The formed part can be made of a bulk amorphous alloy. In some cases, the etchable block can also be used to form at least one threaded portion in the part.
Claims20
A method, comprising:
- introducing a molten amorphous alloy into a space between a mold and an etchable insert shaped to form an undercut on a part formed in the space and defining a protruding portion configured to form an opening in the part;
- cooling the molten alloy to form the part with the undercut and the opening;
- and removing the etchable insert from the part by:
- etching the etchable insert and drilling into at least part of the protruding portion.
A method comprising:
- introducing an amorphous alloy into a space between a first mold portion and a second mold portion, the second mold portion formed from a metal and comprising a protrusion extending into the space;
- hardening the amorphous alloy;
- removing the first mold portion;
- and
- removing the second mold portion from the hardened amorphous alloy by:
- machining away at least a portion of the protrusion;
- and
- etching the second mold portion.
A method, comprising:
- introducing a molten metal into a space between a first mold portion and a second mold portion such that the molten metal contacts a threaded element;
- cooling the molten metal to form the part;
- drilling into the threaded element to remove a first portion of the threaded element;
- and
- etching the threaded element to remove a second portion of the threaded element.
Dependencies are inferred from the claim text.