US3623536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and mold for continuously casting metallic elements
Assignee: Vereinigte Aluminium Werke AG
•
Filing: 1969-11-07
•
Granted: 1971-11-30
•
Expires: 1989-11-07
Abstract
Abstract A mold for continuous casting of metallic elements has a passage which is oriented substantially vertically and has an upper open end and a lower open end so that metal introduced into the upper open end in molten state will solidify within the passage and advance therewithin in solidified form towards and beyond the lower open end. The passage is so configurated that its inner circumferential wall is spaced from the outer surface of the solidified metal element which forms and advances within the passage. The cross section of the passage first diverges and then converges in the direction from the upper open end to the lower open end. Cooling water conduits are provided in the mold and communicate with the passage in the convergent portion thereof, being so arranged that in this portion they cool only the mold and thereby indirectly the solidified metal element, whereupon the water runs along the inner circumferential wall of the passage to the throat or narrowest part of the convergentdivergent cross section where it contacts and directly cools the advancing metal element. The injection of water through the conduits into the convergent portion of the passage produces a venturi action and the resulting underpressure in the passage is utilized to draw air, a desired gas and/or lubricating fluid into the passage.
Inventors
- 👤 Gunther Moritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:12
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/049; B22D11/045
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
A method of continuously casting metallic elements, particularly elements of small thickness such as wires and bands, in a mold having a passage composed of an upstream casting portion and a downstream portion provided with an outlet and being of convergent-divergent cross section in direction towards said outlet, comprising the steps of introducing a stream of molten metal into said upstream portion for solidification and advancement as a metal element through said downstream portion towards said outlet; indirectly cooling said element in said upstream portion; directly cooling said element in said downstream portion by introducing into the convergent region of said convergent-divergent cross section jets of water at a velocity requisite for producing in said passage a venturi effect; and utilizing the thus obtained venturi effect for aspirating auxiliary fluid into said passage.
Claim 2
Independent Claim
133 words
A method of continuously casting metallic elements, particularly elements of small thickness such as wires and bands, in a mold having a passage composed of an upstream casting portion and a downstream portion provided with an outlet and being of convergent-divergent cross section in direction towards said outlet, comprising the steps of introducing a stream of molten metal into said upstream portion for solidification and advancement as a metal element through said downstream portion towards said outlet; indirectly cooling said element in said upstream portion; directly cooling said element in said downstream portion by introducing into the convergent region of said convergent-divergent cross section jets of water at a velocity requisite for producing in said passage a venturi effect; and utilizing the thus obtained venturi effect for aspirating auxiliary fluid into said passage.
Claim 3
Dependent Claim
33 words
A method as defined in claim 1; and further comprising the step of establishing communication between said passage and the ambient atmosphere so that the auxiliary fluid aspirated into said passage includes air.
Claim 4
Dependent Claim
39 words
A method as defined in claim 1; and further comprising the step of establishing communication between said passage and a source of gas having good thermal conductivity so that the auxiliary fluid aspirated into said passage includes said gas.
Claim 5
Dependent Claim
36 words
A method as defined in claim 1; and further comprising the step of establishing communication between said passage and a source of neutral gas, so that the auxiliary fluid aspirated into said passage includes said gas.
Claim 6
Dependent Claim
44 words
A method as defined in claim 1; and further comprising the step of establishing communication between the region of convergent cross section of said passage and a source of lubricating fluid, so that the auxiliary fluid aspirated into said passage includes said lubricating fluid.
Claim 7
Dependent Claim
198 words
Mold for continuous casting of metallic elements, particularly elements of small thickness such as wires and bands, comprising wall means defining an upright passage having an upstream casting portion and a downstream portion provided with an outlet end and being of convergent-divergent cross section in direction towards said outlet end; feed means for feeding into said upstream portion a stream of molten metal for solidification and advancement as a metallic element through said downstream portion to said outlet end; a plurality of channels having outer ends communicating with a source of auxiliary fluid, and inner ends communicating with said downstream portion in the region of the convergent cross section thereof; and cooling means for introducing into the region of convergent cross section of said passage jets of water in such a manner as to indirectly cool the metallic element in said upstream portion and directly cool the metallic element in said downstream portion and for producing in said passage an underpressure sufficient to aspirate said fluid into said passage, said cooling means comprising a plurality of water conduits communicating with said downstream portion in the region of said convergent cross section adjacent said inner ends of said channels.
Claim 8
Dependent Claim
198 words
Mold for continuous casting of metallic elements, particularly elements of small thickness such as wires and bands, comprising wall means defining an upright passage having an upstream casting portion and a downstream portion provided with an outlet end and being of convergent-divergent cross section in direction towards said outlet end; feed means for feeding into said upstream portion a stream of molten metal for solidification and advancement as a metallic element through said downstream portion to said outlet end; a plurality of channels having outer ends communicating with a source of auxiliary fluid, and inner ends communicating with said downstream portion in the region of the convergent cross section thereof; and cooling means for introducing into the region of convergent cross section of said passage jets of water in such a manner as to indirectly cool the metallic element in said upstream portion and directly cool the metallic element in said downstream portion and for producing in said passage an underpressure sufficient to aspirate said fluid into said passage, said cooling means comprising a plurality of water conduits communicating with said downstream portion in the region of said convergent cross section adjacent said inner ends of said channels.
Claim 9
Dependent Claim
56 words
Mold as defined in claim 6, wherein said cross section of said downstream portion is narrowest at a throat located at the juncture of the regions of convergent and divergent cross section; and wherein said cooling means is operative for introducing said water jets at a velocity requisite for producing a venturi effect in said throat.
Claim 10
Dependent Claim
47 words
Mold as defined in claim 7; and further comprising a plurality of ribs provided on an inner surface bounding said downstream portion, and extending in longitudinal direction of said passage at least in the region of said juncture with spacing from one another circumferentially of said passage.
Claim 11
Dependent Claim
26 words
Mold as defined in claim 14, wherein at least some of said channels are air channels, and said outer ends thereof communicate with the ambient atmosphere.
Claim 12
Dependent Claim
37 words
Mold as defined in claim 6; and further comprising lubricating fluid conduits having inner ends communicating with said passage in the region of said upstream portion thereof, and other ends communicating with a source of lubricating fluid.
Claim 13
Dependent Claim
35 words
Mold as defined in claim 10; and further comprising porous means interposed between said passage and said lubricating fluid conduits and being pervious to lubricating fluid passing from said lubricating fluid conduits into said passage.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |