US4039326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antiscorific powder for the casting of steels into ingot molds
Assignee: Acciaierie Di Piombino SpA
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Filing: 1976-03-19
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Granted: 1977-08-02
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Expires: 1996-03-19
Abstract
Abstract The invention has for its object an antiscorific powder to be used in casting "wild" or over-oxidized steels in an ingot moulds, so as to increase the slag fluidity. Said powder is easily obtained and of a relatively low cost.
Inventors
- 👤 Augusto Moschini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:08
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/076; B; B22; B22D; B22D11/00; B22D11/10; B22D11/11; B22D11/111; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
54 words
An antiscorific powder composition for addition after the casting of liquid wild steels into an ingot mold, essentially consisting of the following weight % composition: SiO 2 : 0.5 to 2.0% CaF 2 : 40.0 to 60.0% Na 2 Co 3 : 5.0 to 20.0% Borax: 2.0 to 12.0% Wood Flour: 20.0 to 30.0%
Claim 2
Dependent Claim
54 words
An antiscorific powder composition for addition after the casting of liquid wild steels into an ingot mold, essentially consisting of the following weight % composition: SiO 2 : 0.5 to 2.0% CaF 2 : 40.0 to 60.0% Na 2 Co 3 : 5.0 to 20.0% Borax: 2.0 to 12.0% Wood Flour: 20.0 to 30.0%
Claim 3
Dependent Claim
35 words
An antiscorific powder according to claim 1, wherein said powder in the proportion of 2-4 kgs for ingots weighing between 4 and 6 tons is added after pouring of said steel into the ingot mold.
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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |