Unit Cell Titanium Casting

a technology of titanium casting and unit cell, applied in the field of precision titanium casting, can solve the problems of loss of substantial heat, increase costs, and time-consuming preparation of molding shell, and achieve the effects of reducing pressure, increasing pressure, and optimizing the filling of complex geometries

US20180050389A1Inactive Publication Date: 2018-02-22TOPGOLF CALLAWAY BRANDS CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2018-02-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

A system (5) and method (800) for unit cell casting of titanium or titanium-alloys is disclosed herein. The system (5) comprises an external chamber (45), a crucible (10) positioned within the external chamber (45), an induction coil (15) positioned around the crucible, an internal chamber (40) positioned within the external chamber (45), and a mold (30) positioned within the internal chamber (40). The external chamber (45) is evacuated and a pressurized gas is injected into the evacuated external chamber (45) to create a pressurized external chamber (45). An ingot (20) is melted within the crucible utilizing induction heating generated by the induction coil (15). The internal chamber (40) is evacuated to create an evacuated internal chamber (40). The titanium alloy material of the ingot (20) is completely transferred into the mold (30) from the crucible (10) using a pressure differential created between the external chamber (45) and the internal chamber (40).
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Description

CROSS REFERENCES TO RELATED APPLICATIONS

[0001] The present application claims priority to U.S. Provisional Patent Application No. 62 / 375,804, filed on Aug. 16, 2016, which is hereby incorporated by reference in its entirety.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

[0002] Not ApplicableBACKGROUND OF THE INVENTIONField of the Invention

[0003] The present invention relates to precision titanium casting. More specifically, the present invention relates to an apparatus and method for precision titanium casting utilizing induction heating.Description of the Related Art

[0004] Various methods of titanium casting are well-known. One such method is investment casting which involves a lost wax procedure.

[0005] Vacuum electric arc smelting is another method in which a titanium ingot is melted by substantial heat generated by mutual discharging in a high current state by respectively using a titanium ingot crucible and a water-cooled copper crucible as a positive electrode and a ...

Examples

Embodiment Construction

[0037]During the casting process it is critical to ensure that the material be heated sufficiently and consistently in order to ensure proper flow into the pattern mold. Especially with the use of a bottom-fed / gravity flow system, having the ability to precisely control the pour time will allow for optimum material heating ensuring desired material properties in the finished part. In order to achieve this a chill plate should be utilized which would help to definitively control the time that the molten material would transition to the pattern mold. The chill plate would be in the shape of a ring, with an opening centered on the opening of the ceramic crucible where the material is being melted. The plate itself would be cooled during melting and then at the optimal pour time, the cooling would be turned off. With the cooling, the seal melts through and the material is evacuated into the pattern mold. The use of this feature will allow for precise evacuation times providing consisten...