Metal founding – Means to shape metallic material – United particle type shaping surface
Patent
1975-09-03
1977-04-05
Simpson, Othell M.
Metal founding
Means to shape metallic material
United particle type shaping surface
23273SP, 156616R, 164 60, B22D 1504, B01J 1720
Patent
active
040156575
ABSTRACT:
The device according to the invention is intended for making single-crystal products by the vertically-directed crystallization of molten metal on a seed and comprises a ceramic mould with a seed pocket in the bottom and a cooler with a flat face surface, installed under the mould and having an axial hole for accommodating the seed cooling unit interacting with the seed pocket and, according to the invention, installed with a provision for independent vertical movement relative to the cooler and seed pocket and made in the form of a tube embracing the seed pocket, said tube having an internal partition which divides the tube space into two compartments the lower of which is supplied with refrigerant and is made of a metal whose thermal conductivity ensures a maximum temperature gradient along the length of the seed for the initiation of a crystal.
The device will be used to advantage for making single-crystal ingots and products of metals and metal alloys with a preset crystallographic orientation such as, say, rotor blades of turbine engines and permanent magnets.
The device according to the invention ensures powerful cooling of the seed pocket with refrigerant, required for ensuring reliability and reproducibility of the process.
REFERENCES:
patent: 3231337 (1966-01-01), Barkemeyer et al.
patent: 3538981 (1970-11-01), Phipps, Jr.
patent: 3591340 (1971-07-01), Plaskett
patent: 3759310 (1973-09-01), Barrow et al.
patent: 3857436 (1974-12-01), Petrov et al.
Petrov Dmitry Andreevich
Tumanov Alexei Tikhonovich
Culver Horace M.
Simpson Othell M.
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