Patent US2242738A successfully refreshed from Google Patents.
US3854935A
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Grain refining compositions and method of refining aluminum therewith
Assignee: Foseco International Ltd
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Filing: 1973-08-09
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Granted: 1974-12-17
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Expires: 1993-08-09
Abstract
Abstract Grain refining compositions for aluminium and aluminium alloys containing 15 - 85 percent by weight finely particulate Ti or high-Ti alloy, 2.5 - 70 percent by weight of an alkali metal complex fluoride and optionally a dense metal. The compositions are of density at least 2.4 g/cm3.
Inventors
- 👤 G Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:39
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/026; C22B; C22B21/00; C22B21/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
A COMPOSITION FOR THE GRAIN REFINEMENT OF ALUMINUM OR ALUMINUM ALLOYS CONSISTING ESSENTIALLY OF I. 15 - 85 PERCENT BY WEIGHT OF A MATERIAL SELECTED FROM THE CLASS CONSISTING OF METALLIC TITANIUM AND TITANIUM ALLOYS CONTAINING NNOT LESS THAN 85 PERCENT TITANNIUM, II. 2.5 - 70 PERCENT BY WEIGHT OF AT LEAST ONE COMPONENT SELECTED FROM THE CLASS CONSISTING OF SODIUM BOROFLUORIDE, POTASSIUM BOROFLUORIDE, SODIUM TITANOFLUORIDE, POTASSIUM TITANOFLUORIDE, SODIUM ZIRCONIUM FLUORIDE AND POTASSIUM ZIRCONIM FLUORIDE, AND III. 0 - 46 PERCENT BY WEIGHT OF A METAL HAVING A DENSITY GREATER THAN 4.5 G/CM3, THE CONTENT OF SAID METAL NOT EXCEEDING THE CONTENT OF SAID COMPONENT I), THE CONTENT OF COMPOUND II) BEING AT LEAST 12 PERCENT OF THE CONTENT OF SAID COMPONENT I). SAID COMPONENT I) HAVING A PARTICLE SIZE NOT GREATER THAN 500 MICRONS, AND SAID COMPOSITION HAVING A DENSITY OF AT LEAST 2.4 G/CM3.
Claim 2
Dependent Claim
146 words
A COMPOSITION FOR THE GRAIN REFINEMENT OF ALUMINUM OR ALUMINUM ALLOYS CONSISTING ESSENTIALLY OF I. 15 - 85 PERCENT BY WEIGHT OF A MATERIAL SELECTED FROM THE CLASS CONSISTING OF METALLIC TITANIUM AND TITANIUM ALLOYS CONTAINING NNOT LESS THAN 85 PERCENT TITANNIUM, II. 2.5 - 70 PERCENT BY WEIGHT OF AT LEAST ONE COMPONENT SELECTED FROM THE CLASS CONSISTING OF SODIUM BOROFLUORIDE, POTASSIUM BOROFLUORIDE, SODIUM TITANOFLUORIDE, POTASSIUM TITANOFLUORIDE, SODIUM ZIRCONIUM FLUORIDE AND POTASSIUM ZIRCONIM FLUORIDE, AND III. 0 - 46 PERCENT BY WEIGHT OF A METAL HAVING A DENSITY GREATER THAN 4.5 G/CM3, THE CONTENT OF SAID METAL NOT EXCEEDING THE CONTENT OF SAID COMPONENT I), THE CONTENT OF COMPOUND II) BEING AT LEAST 12 PERCENT OF THE CONTENT OF SAID COMPONENT I). SAID COMPONENT I) HAVING A PARTICLE SIZE NOT GREATER THAN 500 MICRONS, AND SAID COMPOSITION HAVING A DENSITY OF AT LEAST 2.4 G/CM3.
Claim 3
Dependent Claim
29 words
A composition according to claim 1 wherein the metal of density greater than 4.5 g/cm3 is selected from the group consisting of manganese, copper, iron ferromanganese and nickel-chromium alloys.
Claim 4
Dependent Claim
34 words
A composition according to claim 1 and including up to 53 percent by weight of a compound selected from the group consisting of alkali and alkaline earth metal halides and carbonates as fluxing agent.
Claim 5
Independent Claim
155 words
A method of treating molten aluminium and alloys thereof to effect grain-refinement, which comprises adding to said aluminium and alloys a composition consisting essentially of i. 15-85 percent by weight of a material selected from the class consisting of metallic titanium and titanium alloys containing not less than 85 percent titanium, ii. 2.5 - 70 percent by weight of at least one component selected from the class consisting of sodium borofluoride, potassium borofluoride, sodium titanofluoride, potassium titanofluoride, sodium zirconium fluoride and potassium zirconium fluoride, and iii. 0 - 46 percent by weight of a metal having a density greater than 4.5 g/cm3, the content of said metal not exceeding the content of said component i), the content of component ii) being at least 12 percent of the content of said component i), said component i) having a particle size not greater than 500 microns, and said composition having a density of at least 2.4 g/cm3.
Claim 6
Independent Claim
155 words
A method of treating molten aluminium and alloys thereof to effect grain-refinement, which comprises adding to said aluminium and alloys a composition consisting essentially of i. 15-85 percent by weight of a material selected from the class consisting of metallic titanium and titanium alloys containing not less than 85 percent titanium, ii. 2.5 - 70 percent by weight of at least one component selected from the class consisting of sodium borofluoride, potassium borofluoride, sodium titanofluoride, potassium titanofluoride, sodium zirconium fluoride and potassium zirconium fluoride, and iii. 0 - 46 percent by weight of a metal having a density greater than 4.5 g/cm3, the content of said metal not exceeding the content of said component i), the content of component ii) being at least 12 percent of the content of said component i), said component i) having a particle size not greater than 500 microns, and said composition having a density of at least 2.4 g/cm3.
Claim 7
Dependent Claim
30 words
The method of claim 4 wherein the composition is added to the molten metal at a ratio of 0.005 to 0.2 percent of Ti by weight to said molten metal.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |