US3765472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvements in supporting slabs during continuous casting
Assignee: Individual
•
Filing: 1971-02-11
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Granted: 1973-10-16
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Expires: 1991-02-11
Abstract
Abstract A slab shaped strand of metal is continuously cast by pouring metal into the top of a tubular mold and withdrawing a partially solidified strand from beneath the mold. Grid strips extend down from the bottom of the mold and press against the flat sides of the strand to maintain concavities therein during the initial cooling period. The grid strips then terminate; and edge rolls then press inwardly against the narrow edges of the slab to maintain the sidewall concavities.
Inventors
- 👤 I Rossi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:07
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/14; B22D11/142; B22D11/04; B22D11/0406
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
154 words
Metal casting apparatus comprising a tubular mold having means for cooling the same, said mold having a pair of oppositely disposed wide sidewalls inwardly arched toward one another and interconnected at their edges by oppositely disposed narrow edge walls, said mold being mounted with one end above the other, the casting molten metal into a continuous slab comprising an outer shell of solidified metal enclosing a molten core thereof and having inwardly arched wide sidewalls interconnected by narrow edge walls, bracing means adjacent the exit from said mold adapted to bear against the concavely arched wide sidewall surfaces of the cast slab shell for mechanically bracing the same against rupture, means for cooling said slab while so braced and support means below said bracing means for engaging only the opposite edge walls of said slab and for applying compressive forces to the slab widthwise thereby to retain the inwardly arched configuration of said sidewalls.
Claim 2
Dependent Claim
154 words
Metal casting apparatus comprising a tubular mold having means for cooling the same, said mold having a pair of oppositely disposed wide sidewalls inwardly arched toward one another and interconnected at their edges by oppositely disposed narrow edge walls, said mold being mounted with one end above the other, the casting molten metal into a continuous slab comprising an outer shell of solidified metal enclosing a molten core thereof and having inwardly arched wide sidewalls interconnected by narrow edge walls, bracing means adjacent the exit from said mold adapted to bear against the concavely arched wide sidewall surfaces of the cast slab shell for mechanically bracing the same against rupture, means for cooling said slab while so braced and support means below said bracing means for engaging only the opposite edge walls of said slab and for applying compressive forces to the slab widthwise thereby to retain the inwardly arched configuration of said sidewalls.
Claim 3
Dependent Claim
77 words
Apparatus according to claim 1 wherein said bracing means includes a pair of reticulated and substantially rigid bracing members mounted in spaced apart relation substantially parallel to the axis of said mold, said bracing members being inwardly arched toward one another and mounted respectively adjacent the inwardly arched sidewalls of said mold, and means disposed adjacent said bracing members for spraying a coolant liquid against the arched faces of said slab thru reticulations of said bracing members.
Claim 4
Dependent Claim
46 words
Apparatus according to claim 2 wherein each of said bracing members comprises a metal grid composed of spaced bars extending parallel to the axis of said mold and spaced cross bars integrated thereto, said cross bars being shaped to impArt an arcuate contour of said grid.
Claim 5
Dependent Claim
29 words
Apparatus according to claim 3 wherein said spaced parallel bars are of substantial width and are perforated at spaced intervals for spraying said coolant fluid therethrough into said slab.
Claim 6
Dependent Claim
43 words
Apparatus according to claim 2 wherein each of said bracing members comprises a substantially triangular metal plate mounted with one edge substantially parallel to and adjacent the exit of said mold, said plates being perforated for spraying said coolant therethrough into said slab.
Claim 7
Independent Claim
94 words
The method of continuous metal casting which comprises: casting said metal from a molten state into a continuous slab comprising a thin walled shell of solidified metal and a core of molten metal, said shell having formed across its width, oppositely disposed concavely arched surfaces, subjecting said arched surfaces as cast to mechanical bracing across their width to prevent rupture thereof and thereafter removing said mechanical bracing and subjecting the edges of said slab to mechanical bracing to apply compressive force to the slab widthwise to retain the concavely arched configuration of said sidewalls.
Claim 8
Independent Claim
94 words
The method of continuous metal casting which comprises: casting said metal from a molten state into a continuous slab comprising a thin walled shell of solidified metal and a core of molten metal, said shell having formed across its width, oppositely disposed concavely arched surfaces, subjecting said arched surfaces as cast to mechanical bracing across their width to prevent rupture thereof and thereafter removing said mechanical bracing and subjecting the edges of said slab to mechanical bracing to apply compressive force to the slab widthwise to retain the concavely arched configuration of said sidewalls.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |