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Unit Cell Titanium Casting

a titanium casting and unit cell technology, applied in casting apparatus, metal-working apparatus, manufacturing tools, etc., can solve the problems of loss of substantial heat, increase costs, and time-consuming preparation of molding shells, so as to improve the efficiency of equipment, reduce pressure, and optimize the filling of complex geometries

Inactive Publication Date: 2018-02-15
TOPGOLF CALLAWAY BRANDS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a method for casting titanium using a two chamber system. The method involves controlling the pressure difference between the two chambers to improve the flow of titanium and to minimize turbulent flow. By doing so, the method can better fill complex geometries, improve the physical properties of the resulting parts, and increase the efficiency of the equipment. The method involves using a vacuum to remove oxygen and increase pressure, and adding argon to replace any remaining oxygen. This decreases the pressure in the inner chamber before the crucible is emptied, allowing for additional pressure-assisted transition and reducing cycle times.

Problems solved by technology

Vacuum induction smelting and vacuum electric arc smelting require the use of a water-cooled copper crucible which results in the loss of substantial heat.
Furthermore, the preparation of the molding shell is very complex and time consuming, which adds to the costs.
The molten titanium liquid will come into direct contact with water if the crucible cracks, resulting in a fierce reaction, or even explosion, which poses a great threat to production safety.

Method used

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  • Unit Cell Titanium Casting
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Examples

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Embodiment Construction

[0038]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...

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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).

Description

CROSS REFERENCES TO RELATED APPLICATIONS[0001]The present application claims priority to U.S. Provisional Patent Application No. 62 / 374,665, filed on Aug. 12, 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B22D15/00B22D27/00B22D46/00B22D18/06B22D21/06
CPCB22D15/00B22D18/06B22D27/003B22D46/00B22D21/06B22D18/04B22D21/005
Inventor PARAISO, JANSMITH, NORM
Owner TOPGOLF CALLAWAY BRANDS CORP
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