US5651411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of continuous casting
Assignee: Hitachi Ltd
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Filing: 1995-06-05
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Granted: 1997-07-29
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Expires: 2015-06-05
Abstract
Abstract The apparatus is formed by confronting wide side mold walls and confronting narrow side mold walls, The narrow side mold walls are composed of an electrically conductive refractory material and are directly heated. Each of the narrow side mold walls include an upper squeezed portion and a lower parallel portion, The upper squeezed portion has a surface in contact with the molten metal which converges in width along a casting direction. The lower parallel portion has surface in contact with the molten metal which is substantially uniform in width.
Inventors
- 👤 Satoshi Hirano
- 👤 Yutaka Fukui
- 👤 Hideyo Kodama
- 👤 Toshiyuki Kajiwara
- 👤 Yasutsugu Yoshimura
- 👤 Tomoaki Kimura
- 👤 Kenji Horii
- 👤 Tadashi Nishino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:36
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/059; B21; B21B; B21B1/00; B21B1/46; B22D11/0408; B22D11/049; B22D11/053; B22D11/055; B22D11/12; B22D11/1206; B22D11/128; B22D11/1287; B22D11/16; B22D11/20; B21B1/22; B21B1/24; B21B1/26; B21B13/00; B21B13/02; B21B13/023; B21B13/14; B21B13/142; B21B13/145; B21B13/147; B21B2013/025; B21B2013/028; B21B2203/00; B21B2203/42; B21B2267/00; B21B2267/02; B21B2267/06; B21B2267/065; B21B2267/24; B21B2269/00; B21B2269/02; B21B2269/04; B21B2269/12; B21B27/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49991; Y10T29/51; Y10T29/5184
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
125 words
A continuous casting apparatus for continuously manufacturing an ingot from molten metal, comprising: a fixed mold formed by facing wide side mold walls and facing narrow side mold walls, said fixed mold receiving a molten metal, each of said narrow side mold walls comprising an upper squeezed portion and a lower parallel portion, said upper squeezed portion having a surface in contact with the molten metal which converges in width along a casting direction, said lower parallel portion having a surface in contact with the molten metal which is substantially uniform in width, and a heater disposed on the upper squeezed portion, said heater heating the narrow side mold walls over a full extent of said upper squeezed portion in contact with the molten metal.
Claim 2
Dependent Claim
125 words
A continuous casting apparatus for continuously manufacturing an ingot from molten metal, comprising: a fixed mold formed by facing wide side mold walls and facing narrow side mold walls, said fixed mold receiving a molten metal, each of said narrow side mold walls comprising an upper squeezed portion and a lower parallel portion, said upper squeezed portion having a surface in contact with the molten metal which converges in width along a casting direction, said lower parallel portion having a surface in contact with the molten metal which is substantially uniform in width, and a heater disposed on the upper squeezed portion, said heater heating the narrow side mold walls over a full extent of said upper squeezed portion in contact with the molten metal.
Claim 3
Dependent Claim
55 words
A continuous casting apparatus according to claim 1, wherein said heater is arranged on the surface of the upper squeezed portion of each of said narrow side mold walls in contact with the molten metal so that the molten metal is not solidified on the respective upper squeezed portions of said narrow side mold walls.
Claim 4
Dependent Claim
57 words
A continuous casting apparatus according to claim 1, further comprising: temperature measuring means provided proximate each of said narrow side mold walls in contact with the molten metal; and control means for effecting control so that the temperature of the narrow side mold walls can be controlled to an arbitrarily set temperature prior to and during casting.
Claim 5
Dependent Claim
47 words
A continuous casting apparatus according to claim 3, wherein the heating temperature of the surface of the squeezed portion of each of said narrow side mold walls in contact with the molten metal is controlled to a temperature higher than the liquidus temperature of the molten metal.
Claim 6
Dependent Claim
25 words
A continuous casting apparatus according to claim 3, further comprising a vibration unit arranged and configured to vibrate said fixed mold in said casting direction.
Claim 7
Dependent Claim
35 words
A continuous casting apparatus according to claim 1, wherein said narrow side mold walls can be selectively moved in a widthwise direction of the ingot regardless of whether casting is being carried out or not.
Claim 8
Dependent Claim
38 words
A continuous casting apparatus according to claim 1, further comprising support rolls provided on an outlet side of and below said fixed mold to prevent expansion of the ingot due to the static pressure of the molten metal.
Claim 9
Dependent Claim
25 words
A continuous casting apparatus according to claim 7, wherein back-up rolls are provided in contact with said support rolls to back up said support rolls.
Claim 10
Dependent Claim
78 words
A continuous casting apparatus according to claim 1, wherein an end of the upper squeezed portion of said narrow side mold walls which is in contact with said wide side mold walls is formed of a material which is identical to a material from which said wide side mold walls are formed, axed has a thickness (d) which is measured in the thicknesswise direction of the ingot which is not more than a thickness (t) of the ingot.
Claim 11
Dependent Claim
44 words
A continuous casting apparatus according to claim 1, wherein the surface of the upper squeezed portion of each of said narrow side mold walls which contacts the molten metal is composed of an electrically conductive refractory material which is heated by being electrically energized.
Claim 12
Dependent Claim
31 words
A continuous casting apparatus according to claim 1, further comprising a unit for applying an electromagnetic force from said wide side mold walls to the molten metal in said fixed mold.
Claim 13
Dependent Claim
25 words
A continuous casting apparatus according to claim 1, further comprising a vibration unit arranged and configured to vibrate said fixed mold in said casting direction.
Claim 14
Dependent Claim
33 words
A continuous casting apparatus according to claim 12, further comprising rolls consecutively provided downstream of said fixed mold and adapted to rotate in synchronism with movement of the ingot to support the ingot.
Claim 15
Dependent Claim
27 words
A continuous casting apparatus according to claim 12, wherein a side of said parallel portion which contacts the molten metal is composed of a water-cooled metal body.
Claim 16
Dependent Claim
28 words
A continuous casting apparatus according to claim 1, wherein said upper squeezed portion is arcuate in shape and has a radius of curvature of 1500 to 5000 mm.
Claim 17
Dependent Claim
113 words
A continuous casting apparatus according to claim 1, wherein said upper squeezed portion of said narrow side mold walls is formed of an electrically conductive refractory material, is arcuate in shape, end has a radius of curvature of 1500 to 5000 mm, wherein said casting apparatus further comprises width varying means provided on said narrow side mold walls for optionally moving said narrow side mold walls in a widthwise direction of the ingot during casting and non-casting, and wherein an end of said upper squeezed portion which contacts said wide side mold walls is formed of a material which is identical to a material from which said wide side mold walls are formed.
Claim 18
Dependent Claim
113 words
A continuous casting apparatus according to claim 1, wherein said heater heats a side of said upper squeezed portion which contacts the molten metal to a higher temperature than the liquidus temperature of the molten metal, wherein said upper squeezed portion is formed of an electrically conductive refractory material, is arcuate in shape, and has a radius of curvature of 1500 to 5000 mm, wherein a side of said lower parallel portion which contacts the molten metal is composed of a watercooled metal body, and wherein said apparatus further comprises rolls consecutively provided downstream of said fixed mold and adapted to rotate in synchronism with movement of the ingot to support the ingot.
Claim 19
Dependent Claim
69 words
A continuous casting apparatus comprising: a fixed mold formed by facing wide side mold walls and facing narrow side mold walls, said narrow side mold walls forming a squeezed portion with decreasing width in a casting direction and an adjoining constant width section leading from the squeezed portion to a mold outlet, and a heater heating the narrow side mold walls over a full extent of said squeezed portion.
Claim 20
Dependent Claim
69 words
A continuous casting apparatus comprising: a fixed mold formed by facing wide side mold walls and facing narrow side mold walls, said narrow side mold walls forming a squeezed portion with decreasing width in a casting direction and an adjoining constant width section leading from the squeezed portion to a mold outlet, and a heater heating the narrow side mold walls over a full extent of said squeezed portion.
Claim 21
Independent Claim
119 words
A method of continuously casting on ingot from molten metal, comprising the steps of: continuously supplying a molten metal to a fixed mold, said fixed mold formed by facing wide side mold walls and facing narrow side mold walls, each of said narrow side mold walls comprising an upper squeezed portion and a lower parallel portion, said upper squeezed portion having a surface in contact with the molten metal which converges in width along a casting direction, said lower parallel portion having a surface in contact with the molten metal which is substantially uniform in width, and heating said molten metal which is in contact with said upper squeezed portion over a full extent of said upper squeezed portion.
Claim 22
Independent Claim
119 words
A method of continuously casting on ingot from molten metal, comprising the steps of: continuously supplying a molten metal to a fixed mold, said fixed mold formed by facing wide side mold walls and facing narrow side mold walls, each of said narrow side mold walls comprising an upper squeezed portion and a lower parallel portion, said upper squeezed portion having a surface in contact with the molten metal which converges in width along a casting direction, said lower parallel portion having a surface in contact with the molten metal which is substantially uniform in width, and heating said molten metal which is in contact with said upper squeezed portion over a full extent of said upper squeezed portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-28 | 2001-01-27 | 2001-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-28 | 2005-01-27 | 2005-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-28 | 2009-01-27 | 2009-07-29 | $7700.00 | Window Closed / Lapsed |