US3995587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous casting apparatus including Mo-Ti-Zr alloy bushing
Assignee: General Electric Co
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Filing: 1975-09-10
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Granted: 1976-12-07
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Expires: 1995-09-10
Abstract
Abstract Apparatus for a process of continuously casting metals by passing a metal core member upwardly through a container of molten metal, and thereby accreting and solidifying molten metal on the core member; and, a method of continuously casting metals. The apparatus comprises a molten metal container or crucible with an entry port in its bottom wall for the passage of the core member. Positioned within the entry port is a bushing member of molybdenum alloyed with titanium and zirconium, and in the method the core member is passed through the molybdenum alloy bushing.
Inventors
- 👤 Marcel V. Carrara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:30
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/34; C23C2/36; C23C2/38; B; B22; B22D; B22D11/00; B22D11/008; B22D7/00; B22D7/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
Apparatus for the continuous casting of metals by passing a metal core member upwardly through a crucible containing molten metal and thereby accreting and solidifying molten metal on the core member, comprising: a crucible for the containment of molten metal having an entry port below the surface of said molten metal contents for the passage of a metal core member into the crucible and through the contents thereof, said entry port having positioned therein a bushing member consisting essentially of a molybdenum alloy containing minor amounts of titanium and zirconium.
Claim 2
Dependent Claim
90 words
Apparatus for the continuous casting of metals by passing a metal core member upwardly through a crucible containing molten metal and thereby accreting and solidifying molten metal on the core member, comprising: a crucible for the containment of molten metal having an entry port below the surface of said molten metal contents for the passage of a metal core member into the crucible and through the contents thereof, said entry port having positioned therein a bushing member consisting essentially of a molybdenum alloy containing minor amounts of titanium and zirconium.
Claim 3
Dependent Claim
29 words
The apparatus of claim 1, wherein the molybdenum alloy contains about 0.25 to 1.0 percent by weight of titanium and about 0.04 to 0.2 percent by weight of zirconium.
Claim 4
Dependent Claim
29 words
The apparatus of claim 1, wherein the molybdenum alloy contains about 0.40 to 0.55 percent by weight of titanium and about 0.06 to 0.12 percent by weight of zirconium.
Claim 5
Dependent Claim
128 words
Apparatus for the continuous casting of copper by passing a metal core member comprising copper upwardly through a crucible containing molten copper and thereby accreting and solidifying molten copper on the core member, comprising: a crucible having enclosing walls defining a closed chamber for the containment of molten copper, said crucible walls including a bottom wall provided with an entry port and a top wall provided with an exit port for the passage of a metal core member comprising copper up through the closed chamber of the crucible and the molten copper contents thereof; and a refractory bushing member positioned within the entry port of the bottom wall of the crucible, said refractory bushing member consisting essentially of a molybdenum alloy containing minor amounts of titanium and zirconium.
Claim 6
Dependent Claim
128 words
Apparatus for the continuous casting of copper by passing a metal core member comprising copper upwardly through a crucible containing molten copper and thereby accreting and solidifying molten copper on the core member, comprising: a crucible having enclosing walls defining a closed chamber for the containment of molten copper, said crucible walls including a bottom wall provided with an entry port and a top wall provided with an exit port for the passage of a metal core member comprising copper up through the closed chamber of the crucible and the molten copper contents thereof; and a refractory bushing member positioned within the entry port of the bottom wall of the crucible, said refractory bushing member consisting essentially of a molybdenum alloy containing minor amounts of titanium and zirconium.
Claim 7
Dependent Claim
29 words
The apparatus of claim 4, wherein the molybdenum alloy contains about 0.25 to 1.0 percent by weight of titanium and about 0.04 to 0.2 percent by weight of zirconium.
Claim 8
Dependent Claim
29 words
The apparatus of claim 5, wherein the molybdenum alloy contains about 0.40 to 0.55 percent by weight of titanium and about 0.06 to 0.12 percent by weight of zirconium.
Claim 9
Dependent Claim
35 words
The apparatus of claim 5, wherein the molybdenum alloy comprises at least about 99.25 percent by weight of molybdenum, and approximately 0.48 percent by weight of titanium and approximately 0.09 percent by weight of zirconium.
References Cited (Backward Citations)
US2678271A
Cited
US3610204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-07 | 1980-06-07 | 1980-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-07 | 1984-06-07 | 1984-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-07 | 1988-06-07 | 1988-12-07 | $7700.00 | Window Closed / Lapsed |