Patent US3926246A successfully refreshed from Google Patents.
US3926246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux for continuous casting of steel
Assignee: Stollberg Inc
•
Filing: 1974-02-20
•
Granted: 1975-12-16
•
Expires: 1994-02-20
Abstract
Abstract There is disclosed a flux composition consisting essentially of controlled proportions of alkali metal oxides and phosphorus pentoxide, and desirably with fluorides, alkaline earth oxides, alumina, silica or boria. The flux which is substantially entirely vitrified is characterized by having flowidity, plastic deformation point, and alumina solubility all of which are suitable in the process for continuous casting of steel. In such process, the exposed molten steel surface is covered with a layer of said flux composition.
Inventors
- 👤 Paul M Corbett
- 👤 Michael P Fedock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:39
CPC Classifications
C; C22; C22B; C22B7/00; C22B7/04; B; B22; B22D; B22D11/00; B22D11/10; B22D11/11; B22D11/111; C22B9/00; C22B9/10; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
65 words
A FLUX COMPOSITION HAVING FLOWIDITY, PLASTIC DEFORMATION POINT, AND ALUMINUM SOLUBILITY SUITABLE FOR USE IN THE CONTINUOUS CASTING OF STEEL, SAID COMPOSITION BEING SUBSTANTIALLY IN THE VITREOUS STATE AS FRIT PARTICLES, AND CONSISTING ESSENTIALLY OF: INGREDIENTS % BY WEIGHT NA2O 18-24 K2O 0-10 LI20 2.5 - 6 SIO2 1-20 P2O3 10-40 AL2O3 0-25 F 0-10 MGO 5-20 CAO 5-20 BAO 5-20 SRO 5-20 B2O3 0-6
Claim 2
Dependent Claim
65 words
A FLUX COMPOSITION HAVING FLOWIDITY, PLASTIC DEFORMATION POINT, AND ALUMINUM SOLUBILITY SUITABLE FOR USE IN THE CONTINUOUS CASTING OF STEEL, SAID COMPOSITION BEING SUBSTANTIALLY IN THE VITREOUS STATE AS FRIT PARTICLES, AND CONSISTING ESSENTIALLY OF: INGREDIENTS % BY WEIGHT NA2O 18-24 K2O 0-10 LI20 2.5 - 6 SIO2 1-20 P2O3 10-40 AL2O3 0-25 F 0-10 MGO 5-20 CAO 5-20 BAO 5-20 SRO 5-20 B2O3 0-6
Claim 3
Dependent Claim
36 words
A flux composition having flowidity, Plastic Deformation Point, and alumina solubility suitable for use in the continuous casting of steel, said composition being substantially entirely in a vitreous state as frit particles and consisting essentially of:
Claim 4
Dependent Claim
36 words
A flux composition having flowidity, Plastic Deformation Point, and alumina solubility suitable for use in the continuous casting of steel, said composition being substantially entirely in a vitreous state as frit particles and consisting essentially of:
Claim 5
Dependent Claim
7 words
The flux composition of claim 1 wherein:
Claim 6
Dependent Claim
36 words
A flux composition having flowidity, Plastic Deformation Point, and alumina solubility suitable for use in the continuous casting of steel, said composition being substantially entirely in a vitreous state as frit particles and consisting essentially of:
Claim 7
Dependent Claim
36 words
A flux composition having flowidity, Plastic Deformation Point, and alumina solubility suitable for use in the continuous casting of steel, said composition being substantially entirely in a vitreous state as frit particles and consisting essentially of:
Claim 8
Dependent Claim
36 words
A flux composition having flowidity, Plastic Deformation Point, and alumina solubility suitable for use in the continuous casting of steel, said composition being substantially entirely in a vitreous state as frit particles, and consisting essentially of:
Claim 9
Dependent Claim
36 words
A flux composition having flowidity, Plastic Deformation Point, and alumina solubility suitable for use in the continuous casting of steel, said composition being substantially entirely in a vitreous state as frit particles, and consisting essentially of:
Claim 10
Dependent Claim
39 words
In a process for the continuous casting of steel using an open-ended mold for the molten metal, the improvement which comprises covering the exposed surface of said molten metal with a layer of the flux composition of claim 1.
References Cited (Backward Citations)
US2825947A
Cited
US3454433A
Cited
US3357876A
Cited
US3318363A
Cited
US3433611A
Cited
US3642052A
Cited
US3698466A
Cited
US3685986A
Cited
US3649249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |