US3905418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous casting apparatus with resilient graphitic sealing element
Assignee: Bayer Corp
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Filing: 1973-11-26
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Granted: 1975-09-16
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Expires: 1993-11-26
Abstract
Abstract Apparatus for continuous casting of metals including a cooled axial mold wall defining at least part of a mold cavity and a wall structure extending transversely of the axial wall and located therein, provided with a solid cooled sealing element of resilient graphitic material extending therearound and internally abutting the axial wall which is moved on its axis relatively to the transverse wall. On the face thereof which contacts molten metal and covering a portion of the sealing element in overlapping relation, such transverse wall has a refractory element having an outer surface portion thereof adjacent the axial mold wall disposed at an angle to the last-mentioned wall. There is also provided a nozzle structure having improved thermal characteristics for delivering molten metal to a mold cavity for continuous casting.
Inventors
- 👤 Leonard Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:31
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/045; B22D11/047
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
172 words
Apparatus for the continuous casting of a metal article comprising, in combination: a cooled axial mold wall having a forward exit for the article and movable on its axis and defining at least in part a mold cavity; a wall structure extending transversely of said axial wall and located therein and which is exposed to molten metal in a casting operation, said transverse wall comprising a cooled peripheral portion having a face toward said exit extending transversely of said axial wall; means to oscillate said axial wall with reference to said transverse wall; and a solid dynamic sealing element of resilient graphitic material carried by said transverse wall and extending therearound forwardly of and in contact with said cooled face to be cooled thereby, said sealing element being in internal sealing contact with said axial wall; and said transverse wall having a forward refractory cover element thereon exposed to molten metal in said mold cavity, said cover element substantially overlapping the foremost portion of said sealing element for thermal insulation of it.
Claim 2
Dependent Claim
172 words
Apparatus for the continuous casting of a metal article comprising, in combination: a cooled axial mold wall having a forward exit for the article and movable on its axis and defining at least in part a mold cavity; a wall structure extending transversely of said axial wall and located therein and which is exposed to molten metal in a casting operation, said transverse wall comprising a cooled peripheral portion having a face toward said exit extending transversely of said axial wall; means to oscillate said axial wall with reference to said transverse wall; and a solid dynamic sealing element of resilient graphitic material carried by said transverse wall and extending therearound forwardly of and in contact with said cooled face to be cooled thereby, said sealing element being in internal sealing contact with said axial wall; and said transverse wall having a forward refractory cover element thereon exposed to molten metal in said mold cavity, said cover element substantially overlapping the foremost portion of said sealing element for thermal insulation of it.
Claim 3
Dependent Claim
45 words
Apparatus as defined in claim 1, wherein: said sealing element seats on a surface of said cover element extending at least generally parallel to said axial mold wall, said sealing element having a planar surface portion which is in flatwise contact with said cooled face.
Claim 4
Dependent Claim
39 words
Apparatus as defined in claim 1, wherein: the dimension of said sealing element in contact said axial mold wall in a direction parallel thereto is substantially equal to the longest dimension of said sealing element in said parallel direction.
Claim 5
Dependent Claim
33 words
Apparatus as defined in claim 1, whereIn: said sealing element has planar surface portions facing in opposite directions which are respectively engaged in flatwise relation by said cover element and said cooled face.
Claim 6
Dependent Claim
30 words
Apparatus as defined in claim 1, wherein: said cover element is a retainer for said sealing element and is spring biased to clamp said sealing element against said cooled face.
Claim 7
Dependent Claim
20 words
Apparatus as defined in claim 1, wherein: said sealing element in cross section parallel to said axial wall is rectangular.
Claim 8
Dependent Claim
29 words
Apparatus as defined in claim 1, wherein: said transverse wall has an opening therethrough axially of said axial mold wall for delivery of molten metal to said mold cavity.
Claim 9
Dependent Claim
29 words
Apparatus as defined in claim 1, wherein: said sealing element comprises seal segments arranged to abut one another in array around the internal surface of said axial mold wall.
Claim 10
Dependent Claim
26 words
Apparatus as defined in claim 1, wherein: said sealing element comprises laminated graphite the foliations of which are arranged in parallelism with said axial mold wall.
Claim 11
Dependent Claim
47 words
Apparatus as defined in claim 1, wherein: said sealing element comprises laminated graphite the foliations of which are arranged in parallelism with said axial mold wall, and said sealing element comprises seal segments abuting one another in array around the internal surface of said axial mold wall.
Claim 12
Dependent Claim
41 words
Apparatus as defined in claim 1, wherein: said transverse wall has an opening therethrough axially of said axial mold wall for delivery of molten metal to said mold cavity, said cover element having a non-planar portion extending into said mold cavity.
References Cited (Backward Citations)
US3040396A
Cited
US3344846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |