US4076224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tundishes
Assignee: Foseco Trading AG
•
Filing: 1977-04-05
•
Granted: 1978-02-28
•
Expires: 1997-04-05
Abstract
Abstract A tundish is described in which a refractory lined metal casing has an inner expendable lining. In the impact area, there is a pad of erosion resistant and sacrificial material. According to the invention, a body of refractory material of high thermal conductivity is located below the pad to conduct heat away therefrom.
Inventors
- 👤 Jean Louis Duchateau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:11
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/003; B22D41/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
95 words
In a tundish comprising an outer metal casing, a permanent refractory lining adjacent the casing, and an inner expendable lining made up of a set of slabs of heat insulating material, the impact area of the tundish being protected by a material selected from the class consisting of highly erosion resistant materials and sacrificial materials, the improvement which comprises providing a body of refractory highly heat-conductive material set in a recess in the permanent lining in the base of the tundish, and located below the material protecting the impact area to conduct heat away therefrom.
Claim 2
Dependent Claim
95 words
In a tundish comprising an outer metal casing, a permanent refractory lining adjacent the casing, and an inner expendable lining made up of a set of slabs of heat insulating material, the impact area of the tundish being protected by a material selected from the class consisting of highly erosion resistant materials and sacrificial materials, the improvement which comprises providing a body of refractory highly heat-conductive material set in a recess in the permanent lining in the base of the tundish, and located below the material protecting the impact area to conduct heat away therefrom.
Claim 3
Dependent Claim
16 words
The tundish of claim 1 wherein the body is set in the recess by refractory mortar.
Claim 4
Dependent Claim
24 words
The tundish of claim 1 wherein the body is formed of a composition comprising graphite, alumina, silica and silicon carbide and a binding agent.
Claim 5
Dependent Claim
35 words
The tundish of claim 1 wherein the thermal conductivity of the highly heat-conductive refractory body is greater in directions parallel to the plane of the floor of the tundish than in the direction perpendicular thereto.
Claim 6
Dependent Claim
20 words
The tundish of claim 1 wherein the refractory highly heat conductive body is a block 100 to 150 mm thick.
Claim 7
Dependent Claim
33 words
The tundish of claim 1 and including at least one slab of refractory highly heat conductive material located between the permanent lining and the expendable lining adjacent the impact area of the tundish.
References Cited (Backward Citations)
US4012029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |