Method and system for semiliquid die casting high performance mechanical components from rheocast ingots
Patent 5533562 Issued on July 9, 1996. Estimated Expiration Date: 
September 29, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 29, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for the preparation of a mixture comprising a solid phase and a liquid phase of a metal alloy, and device for its performance Method and apparatus for forming a thixoforged copper base alloy cartridge casing Patent #: 4537242 InventorsAssigneeApplicationNo. 315236 filed on 09/29/1994US Classes:164/71.1, With vibratory treatment of casting material164/113, Pressure forming164/154.6, Responsive to thermal condition164/312, Piston-cylinder charger164/900RHEO-CASTINGExaminersPrimary: Lin, Kuang Y.Attorney, Agent or FirmForeign Patent References
International ClassesB22D 027/08B22D 017/08 Foreign Application Priority Data1993-09-29 ITAbstractA method including a preheating stage wherein rheocast light alloy ingots are preheated to a temperature within the solidification range of the alloy; and a die casting stage wherein a mold is filled with the semiliquid alloy. The preheating stage is performed in a forced-convection-heated tunnel furnace, with the ingots housed inside cup-shaped containers which, following a temperature check, are tipped by a robot to unload the ingots into the injection chamber of a die casting machine. Work is conducted within a temperature range depending on the composition of the alloy, and such that, at the minimum permissible injection temperature, the ingot is incapable of maintaining its own shape, and, at the maximum permissible injection temperature, the apparent viscosity of the ingot is such as to ensure the mold is filled under laminar flow conditions.Other References
Field of SearchRHEO-CASTINGWith vibratory treatment of casting material With measuring, testing, inspecting, or condition determination Pressure forming Piston-cylinder charger Casting metal introduced into mold as a solid During feeding of metal to mold For detecting or predicting breakout of continuous casting strand Responsive to thermal condition Coating mold surface with a treating agent Utilizing a vacuum WITH COATING MEANS MEANS TO APPLY VACUUM DIRECTLY TO WORK OR TO HOLD OR MANIPULATE SHAPING MEANS | |
