US3834445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous casting mold having a breakout sensing and control device
Assignee: Voestalpine AG
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Filing: 1972-08-25
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Granted: 1974-09-10
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Expires: 1992-08-25
Abstract
Abstract The invention relates to an apparatus to be used at a continuous casting plant for preventing the results of a break through of the solidifying bar. Such apparatus comprises a protective body which is resistant against liquid metal and immediately below the mould surrounds the bar shell over at least part of its circumference and is provided with a cavity open towards the bar shell for receiving liquid metal, and in said body a sensor connected with an alarm system for indicating a metal break through so that casting may be interrupted.
Inventors
- 👤 H Raschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:43
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/16; B22D11/14; B22D11/148
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
160 words
An apparatus for use in a continuous casting plant for determining if the liquid core of the cast bar has broken through the outer shell of the bar, the apparatus being positioned adjacent the casting mould, comprising, a protective body resistant against liquid metal which is positioned immediately below the mould for minimizing the flow of any liquid metal that breaks through the outer shell of the bar onto other parts of the plant, the protective body surrounding the cast bar over at least that part of its circumference where break throughs normally occur and being provided with a cavity therein open toward the cast bar, system means for indicating a metal break through including, a sensor for detecting the presence of liquid metal, said sensor being positioned in the cavity and connected to the system means in a way as to cause the system means to indicate a metal break through when liquid metal is present in the cavity.
Claim 2
Independent Claim
160 words
An apparatus for use in a continuous casting plant for determining if the liquid core of the cast bar has broken through the outer shell of the bar, the apparatus being positioned adjacent the casting mould, comprising, a protective body resistant against liquid metal which is positioned immediately below the mould for minimizing the flow of any liquid metal that breaks through the outer shell of the bar onto other parts of the plant, the protective body surrounding the cast bar over at least that part of its circumference where break throughs normally occur and being provided with a cavity therein open toward the cast bar, system means for indicating a metal break through including, a sensor for detecting the presence of liquid metal, said sensor being positioned in the cavity and connected to the system means in a way as to cause the system means to indicate a metal break through when liquid metal is present in the cavity.
Claim 3
Dependent Claim
17 words
The apparatus set forth in claim 1, wherein the protective body is releasably attached to the mould.
Claim 4
Dependent Claim
31 words
The apparatus set forth in claim 1, wherein the protective body comprises at least two parts, said parts being displaceable relative to each other for adaptation to different bar cross sections.
Claim 5
Dependent Claim
22 words
The apparatus set forth in claim 3, wherein the parts of said body are cooled by circulation of a cooling agent therein.
Claim 6
Dependent Claim
55 words
The apparatus set forth in claim 1, wherein for producing a broad slab with two broad sides and two narrow sides the protective body comprises two parts, the two parts being positioned on the two opposite broad sides of the cast slab and each of the parts having a cavity therein open toward the slab.
Claim 7
Dependent Claim
27 words
The apparatus set forth in claim 1, wherein the protective body is provided at least at its lower edge with a supporting plane for the bar shell.
Claim 8
Dependent Claim
25 words
The apparatus set forth in claim 6, wherein said supporting plane is formed by a hollow section cooled by circulation of a cooling agent therein.
Claim 9
Dependent Claim
30 words
The apparatus set forth in claim 1, wherein the cavity of the protective body is provided with a lateral opening through which liquid steel may flow into a collecting vessel.
Claim 10
Independent Claim
195 words
An apparatus for use in a continuous casting plant for determining if the liquid core of the cast bar has broken through the outer shell of the bar, the apparatus being positioned adjacent the casting mould, comprising: a protective body resistant against liquid metal and positioned immediately below the mould, said protective body surrounding the cast bar over at least a part of its circumference and being provided with a cavity therein open toward the cast bar; an alarm signal means with a first terminal connected to the mould; a sensor for indicating the presence of liquid metal, said sensor being positioned in the cavity of said protective body and being made of a metal wire which is electrically insulated against the protective body and against the cast bar; and a power supply with one pole connected to the wire and the other pole connected to a second terminal of said alarm signal means, whereby in case of a metal break through, the insulation of the metal wire is destroyed and an electrically conductive connection is established between the metal wire and, via the bar, with the mould, and the alarm signal means is actuated.
Claim 11
Independent Claim
195 words
An apparatus for use in a continuous casting plant for determining if the liquid core of the cast bar has broken through the outer shell of the bar, the apparatus being positioned adjacent the casting mould, comprising: a protective body resistant against liquid metal and positioned immediately below the mould, said protective body surrounding the cast bar over at least a part of its circumference and being provided with a cavity therein open toward the cast bar; an alarm signal means with a first terminal connected to the mould; a sensor for indicating the presence of liquid metal, said sensor being positioned in the cavity of said protective body and being made of a metal wire which is electrically insulated against the protective body and against the cast bar; and a power supply with one pole connected to the wire and the other pole connected to a second terminal of said alarm signal means, whereby in case of a metal break through, the insulation of the metal wire is destroyed and an electrically conductive connection is established between the metal wire and, via the bar, with the mould, and the alarm signal means is actuated.
Claim 12
Independent Claim
193 words
An apparatus for use in a continuous casting plant for determining if the liquid core of the cast bar has broken through the outer shell of the bar, the Apparatus being positioned adjacent the casting mould, comprising: a protective body resistant against liquid metal and positioned immediately below the mould, said protective body surrounding the cast bar over at least a part of its circumference and being provided with a cavity therein open toward the cast bar; an alarm signal means with a first terminal connected to said protective body; a sensor for indicating the presence of liquid metal, said sensor being positioned in the cavity of said protective body and being made of a metal wire which is electrically insulated against the protective body and against the cast bar; and a power supply with one pole connected to the wire and the other pole connected to a second terminal of said alarm signal means, whereby in case of a metal break through, the insulation of the metal wire is destroyed and an electrically conductive connection is established between the metal wire and said protective body, and the alarm signal means is actuated.
Claim 13
Independent Claim
193 words
An apparatus for use in a continuous casting plant for determining if the liquid core of the cast bar has broken through the outer shell of the bar, the Apparatus being positioned adjacent the casting mould, comprising: a protective body resistant against liquid metal and positioned immediately below the mould, said protective body surrounding the cast bar over at least a part of its circumference and being provided with a cavity therein open toward the cast bar; an alarm signal means with a first terminal connected to said protective body; a sensor for indicating the presence of liquid metal, said sensor being positioned in the cavity of said protective body and being made of a metal wire which is electrically insulated against the protective body and against the cast bar; and a power supply with one pole connected to the wire and the other pole connected to a second terminal of said alarm signal means, whereby in case of a metal break through, the insulation of the metal wire is destroyed and an electrically conductive connection is established between the metal wire and said protective body, and the alarm signal means is actuated.
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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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |