Patent US3635279A successfully refreshed from Google Patents.
US3635279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting an ingot in a thin-walled deformable steel mould
Assignee: Individual
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Filing: 1969-10-28
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Granted: 1972-01-18
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Expires: 1989-10-28
Abstract
Abstract A method of manufacturing an ingot made of a high-melting point metal such as iron, steel, nickel, cobalt and alloys thereof, in which a thin-walled mould is vertically and movably supported by a molten bath contained in a bath tank and a molten metal is poured into said mould to move it downwards into said molten bath in response to an increase of the amount of the molten metal poured in the mould. The molten metal poured in the mould is cooled and coagulated upwards in succession from the lower end of the mould, thereby forming an ingot in the mould.
Inventors
- 👤 Yonosuke Matsunaga
- 👤 Eiichi Kato
- 👤 Seiji Tobisawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:03
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/005; Y; Y10; Y10S; Y10S164/00; Y10S164/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
199 words
A method for manufacturing an ingot comprising (1) supporting a thin-walled steel mould having an open end vertically and movably upon a cooling bath so that the open end of the mould is directed upward, said mould and said cooling bath associating to result in sufficient buoyancy so that when molten metal is poured into the mould the mould submerges into the cooling bath in proportion to the increase in height of the metal poured into the mould; (2) pouring molten metal into the mould so that the mould submerges into the cooling bath in proportion to the increase in height of the metal poured into the mould; (3) allowing the molten metal in the mould to cool and solidify upwards in succession from the lower end of said mould, and (4) removing an ingot thus produced from the mould, said process being further characterized in that the walls of said mould are so thin that the mould is deformable when filled with molten metal and that the walls of the mould are subjected to sufficiently high external pressure by the cooling bath to substantially counteract the hydrostatic pressure of the molten metal thus preventing deformation of the mould.
Claim 2
Independent Claim
199 words
A method for manufacturing an ingot comprising (1) supporting a thin-walled steel mould having an open end vertically and movably upon a cooling bath so that the open end of the mould is directed upward, said mould and said cooling bath associating to result in sufficient buoyancy so that when molten metal is poured into the mould the mould submerges into the cooling bath in proportion to the increase in height of the metal poured into the mould; (2) pouring molten metal into the mould so that the mould submerges into the cooling bath in proportion to the increase in height of the metal poured into the mould; (3) allowing the molten metal in the mould to cool and solidify upwards in succession from the lower end of said mould, and (4) removing an ingot thus produced from the mould, said process being further characterized in that the walls of said mould are so thin that the mould is deformable when filled with molten metal and that the walls of the mould are subjected to sufficiently high external pressure by the cooling bath to substantially counteract the hydrostatic pressure of the molten metal thus preventing deformation of the mould.
Claim 3
Dependent Claim
49 words
A method of manufacturing an ingot as claimed in claim 5, in which provision is made of a dish-shaped thin-walled mould having a height appropriately proportioned to the the thickness of an ingot to be manufactured and the mould is made floated upon and supported by the molten bath.
Claim 4
Dependent Claim
39 words
A method of manufacturing an ingot as claimed in claim 1, in which said thin-walled mould is made of a nonmagnetic stainless alloy steel or steel and is subjected to a magnetic field to produce a magnetically anisotropic ingot.
Claim 5
Dependent Claim
31 words
A method of manufacturing an ingot as claimed in claim 1 comprising further subjecting ultrasonic oscillations to said thin-walled mould during coagulation of said molten metal poured into said thin-walled mould.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |