US3795269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for casting on moving surfaces
Assignee: Alcan Research and Development Ltd
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Filing: 1972-03-27
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Granted: 1974-03-05
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Expires: 1992-03-27
Abstract
Abstract In the casting of metals on or between movable endless surfaces, a two-layer dressing is applied to each casting surface. The dressing includes a heat-insulating coating fixedly adhered to the casting surface, and a removable parting layer deposited on the coating for preventing metal from sticking to the coating. As the casting surface moves successively out of and into engagement with metal being cast during each cycle of operation, it is cleaned to remove the previously applied parting layer, and a fresh parting layer is newly applied.
Inventors
- 👤 G Leconte
- 👤 J Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:57
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/06; B22D11/0637; B22D11/0665; B22D11/0668; B22C; B22C3/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
A method of continuously casting a metal ingot in contact with a moving surface, including the steps of a. continuously advancing an endless metal casting surface along a closed path while b. continuouSly bringing molten metal into contact with said surface at a first locality in said path and while c. continuously separating freshly cast ingot from said surface at a second locality in said path, wherein the improvement comprises d. said casting surface bearing a continuous and fixedly adherent heat-insulating coating; and e. continuously applying to the coating, during advance of said casting surface as aforesaid, a discrete layer of a parting material for preventing adherence of solidifying ingot to the coating.
Claim 2
Independent Claim
113 words
A method of continuously casting a metal ingot in contact with a moving surface, including the steps of a. continuously advancing an endless metal casting surface along a closed path while b. continuouSly bringing molten metal into contact with said surface at a first locality in said path and while c. continuously separating freshly cast ingot from said surface at a second locality in said path, wherein the improvement comprises d. said casting surface bearing a continuous and fixedly adherent heat-insulating coating; and e. continuously applying to the coating, during advance of said casting surface as aforesaid, a discrete layer of a parting material for preventing adherence of solidifying ingot to the coating.
Claim 3
Dependent Claim
13 words
A method according to claim 1, wherein said coating comprises a silicone resin.
Claim 4
Dependent Claim
67 words
A method according to claim 1, wherein said parting material is readily removable from said coating, and wherein the layer-applying step includes the steps of i. cleaning the coated casting surface to remove parting material therefrom as said surface advances beyond said second locality and thereafter ii. applying a fresh layer of parting material to the surface prior to return of the surface to the first locality.
Claim 5
Dependent Claim
38 words
A method according to claim 3, wherein said parting material is a dry particulate material and wherein said cleaning step comprises brushing the coated casting surface to effect substantially complete removal of residual particles of parting material therefrom.
Claim 6
Dependent Claim
12 words
A method according to claim 4, wherein said parting material is talc.
Claim 7
Dependent Claim
84 words
Apparatus for casting metal, including a. a movable endless casting surface and b. means for delivering molten metal thereto, wherein the improvement comprises c. a thermally insulating coating deposited on and fixedly adhered to said casting surface and d. means for continuously applying to said casting surface, during movement thereof, a discrete layer of parting material for preventing metal from sticking to said coating, deposited on said coating so as to be interposed between said coating and the metal delivered to said casting surface.
Claim 8
Dependent Claim
84 words
Apparatus for casting metal, including a. a movable endless casting surface and b. means for delivering molten metal thereto, wherein the improvement comprises c. a thermally insulating coating deposited on and fixedly adhered to said casting surface and d. means for continuously applying to said casting surface, during movement thereof, a discrete layer of parting material for preventing metal from sticking to said coating, deposited on said coating so as to be interposed between said coating and the metal delivered to said casting surface.
Claim 9
Dependent Claim
97 words
Apparatus as defined in claim 6, wherein said parting material is a dry particulate material; and further including e. means for continuously advancing said casting surface along a closed path past first and second localities at which metal is respectively brought into contact with said surface for casting and removed from contact with said surface after casting, f. said applying means being disposed ahead of said first locality for depositing a layer of said particulate material on the coated casting surface; and g. means beyond said second locality for removing residual particulate material from the casting surface.
Claim 10
Dependent Claim
74 words
A method according to claim 1, wherein said coating comprises a silicone resin, wherein said parting material is readily removable from said coating, and wherein the layer-applying step includes the steps of i. cleaning the coated casting surface to remove parting material therefrom as said surface advances beyond said second locality and thereafter ii. applying a fresh layer of parting material to the surface prior to return of the surface to the first locality.
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |