EP0040069A1
Expired / Lapsed
EP
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Strip casting apparatus
Assignee: Battelle Development Corp
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Filing: 1981-05-08
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Granted: —
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Expires: 2001-05-08
Abstract
Abstract An apparatus for continuously casting metallic strip material, comprising a tundish (22) and a nozzle comprising a curvilinear element (24), with an orifice passage (30) in the element (24) having substantially uniform cross-sectional dimensions throughout the longitudinal extent thereof. Disposed outside the nozzle is a cooled casting surface (14) movable past the nozzle in a direction substantially perpendicular to the longitudinal axis of the orifice passage (30). The casting surface (14) is disposed at a standoff distance from the nozzle of less than 3.048mm (.120 inch).
Inventors
- 👤 Robert Edward Maringer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:58
CPC Classifications
B; B22; B22D; B22D15/00; B22D15/04; B22D11/00; B22D11/005; B22D11/06; B22D11/0637; B22D11/064; B22D11/0642
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
127 words
Apparatus for continuously casting metal strip comprising: a tundish for receiving and holding molten metal, a nozzle comprising a curvilinear element disposed in the tundish, said curvilinear element having an orifice passage therein, with the longitudinal extent of the orifice passage approximating the width of the strip to be cast, said orifice passage having substantially uniform cross-sectional dimensions throughout the longitudinal extent thereof, a cooled casting surface at least as wide as the strip to be cast, disposed at a standoff distance of less than 3.048mm (.120 inch) from the nozzle, movable past the orifice passage in a direction substantially perpendicular to the longitudinal axis of the orifice passage, said orifice passage defined between a first side portion and a second side portion of the curvilinear element.
Claim 2
Dependent Claim
127 words
Apparatus for continuously casting metal strip comprising: a tundish for receiving and holding molten metal, a nozzle comprising a curvilinear element disposed in the tundish, said curvilinear element having an orifice passage therein, with the longitudinal extent of the orifice passage approximating the width of the strip to be cast, said orifice passage having substantially uniform cross-sectional dimensions throughout the longitudinal extent thereof, a cooled casting surface at least as wide as the strip to be cast, disposed at a standoff distance of less than 3.048mm (.120 inch) from the nozzle, movable past the orifice passage in a direction substantially perpendicular to the longitudinal axis of the orifice passage, said orifice passage defined between a first side portion and a second side portion of the curvilinear element.
Claim 3
Dependent Claim
70 words
Apparatus according to claim 1 wherein: said first side portion has a substantially planar inside surface with respect to the orifice passage, and an outer, lip projecting surface at the discharge end of the orifice passage disposed toward, and facing the casting surface for a length of at least 0.254mm (.01 inch) before the outer, lip projecting surface of the first side portion is relieved to define a lip projection.
Claim 4
Dependent Claim
53 words
Apparatus according to claim 1 or 2 wherein: said second side portion has a substantially ' planar inside surface substantially parallel to and facing the inside surface of the first side portion at least at a lower portion of said orifice passage, and a bottom surface disposed toward, and facing the casting surface.
Claim 5
Dependent Claim
19 words
Apparatus according to claim 1,2 or 3 wherein the orifice passage is substantially centrally located in the curvilinear element.
Claim 6
Dependent Claim
37 words
Apparatus according to any one of the preceding claims, wherein the casting surface is movable past the nozzle at a rate of from 61 to 3048 linear surface metres (200 to 10,000 linear surface feet) per minute.
Claim 7
Dependent Claim
33 words
Apparatus according to claim 5, wherein the casting surface is movable past the nozzle at a rate of from 549 to 1219 linear surface metres (1,800 to 4,000 linear surface feet) per minute.
Claim 8
Dependent Claim
54 words
Apparatus according to claim 3,wherein an inside portion of the orifice passage defined between the inside surface of the first side portion and the inside surface of the second side portion tapers inwardly from the molten metal holding portion of the nozzle to the location where said inside surfaces are parallel to one another.
Claim 9
Dependent Claim
32 words
Apparatus according to any one of the preceding claims 2 to 7, wherein the standoff distance between the outer, lip projecting surface and the casting surface is less than 2.032mm (0.080 inch).
Claim 10
Dependent Claim
39 words
Apparatus according to any one of the preceding claims 2 to 8, wherein the outer, lip projecting surface extends for a length, of at least 0.508mm (0.02 inch). before the projecting surface is relieved to define the lip projection.
Claim 11
Dependent Claim
32 words
Apparatus according to claim 2 wherein an integral curvilinear surface is provided between the inside surface of the first side portion and the outer, lip projecting surface of the first side portion.
Claim 12
Dependent Claim
34 words
Apparatus according to any one of the preceding claims, wherein a standoff distance of less than 2.032mm (0.080 inch) is maintained between the bottom surface of the second side portion and the casting surface.
Claim 13
Dependent Claim
22 words
Apparatus according to any one of the preceding claims, wherein the casting surface comprises the peripheral surface of a water cooled wheel.
Claim 14
Dependent Claim
27 words
Apparatus according to claim 12 wherein the wheel is made of a metal selected from copper, copper alloy, aluminum, aluminum alloy, E teel, molybdenum and combinations thereof.
Claim 15
Dependent Claim
28 words
Apparatus according to claim 2, wherein at least a portion of the ouver, lip projecting surface is in complete parallelism with the opposed portion of the casting surface.
Claim 16
Dependent Claim
31 words
Apparatus according to claim 3, wherein at least a portion of the bottom surface of the second side portion is in complete parallelism with the opposed portion of the casting surface.
Claim 17
Dependent Claim
31 words
Apparatus according to claim 14, wherein the distance between the casting surface and the parallel, facing outer, lip projecting surface of the first side portion is less than 0.635mm (0.025 inch).
Claim 18
Dependent Claim
31 words
Apparatus according to claim 14, wherein the distance between the casting surface and the parallel, facing outer, lip projecting surface of the first side portion is less than 0.254mm (0.010 inchl.
Claim 19
Dependent Claim
34 words
Apparatus according to claim 14, wherein the distance between the casting surface and the parallel, facing outer, lip projecting surface of the first side portion is from 0.0762 to 0.1524mm (0.003 to 0.006 inch).
Claim 20
Dependent Claim
37 words
Apparatus according to any one of the preceding claims, wherein the distance between the parallel facing inside surfaces defining at least an outer portion of the orifice passage is from 0.254 to 0.889mm (0.010 to 0.035 inchl.
Claim 21
Dependent Claim
34 words
Apparatus according to any one of the preceding claims, wherein a standoff distance of less than 0.0508mm (0.002 inch) is maintained between the bottom surface of the second side portion and the casting surface.
Claim 22
Dependent Claim
30 words
Apparatus according to any one of the preceding claims, wherein the inside surfaces defining the orifice passage are disposed toward the casting surface at an angle of less than 90°.
Claim 23
Dependent Claim
25 words
Apparatus according to claim 21, wherein the inside surfaces defining the orifice passage are disposed toward the casting surface at an angle of substantially 45°.
Claim 24
Dependent Claim
45 words
Apparatus according to any one of the preceding claims, wherein the curvilinear element is constructed of a material selected from graphite, alumina graphite, clay graphite, quartz, fiberized kaolin, boron nitride, silicon nitride, silicon carbide, boron carbide, alumina, zirconia, stabilized zirconia silicate, magnesia and combinations thereof.
References Cited (Backward Citations)
US4142571A
Cited
DE2856795A1
Cited
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