WO2017203394A1 - Parties supérieures amovibles de poches de coulée, poches de coulée comprenant celles-ci, et systèmes et procédés associés destinés à être utilisés dans le traitement du métal fondu - Google Patents

Parties supérieures amovibles de poches de coulée, poches de coulée comprenant celles-ci, et systèmes et procédés associés destinés à être utilisés dans le traitement du métal fondu Download PDF

Info

Publication number
WO2017203394A1
WO2017203394A1 PCT/IB2017/052883 IB2017052883W WO2017203394A1 WO 2017203394 A1 WO2017203394 A1 WO 2017203394A1 IB 2017052883 W IB2017052883 W IB 2017052883W WO 2017203394 A1 WO2017203394 A1 WO 2017203394A1
Authority
WO
WIPO (PCT)
Prior art keywords
upper portion
lower portion
top end
bottom end
ladle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2017/052883
Other languages
English (en)
Inventor
Mansour AL-HARBI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SABIC Global Technologies BV
Original Assignee
SABIC Global Technologies BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SABIC Global Technologies BV filed Critical SABIC Global Technologies BV
Publication of WO2017203394A1 publication Critical patent/WO2017203394A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases

Definitions

  • the present invention relates generally to molten metal processing, and more specifically, but not by way of limitation, to removable upper portions of ladles (e.g., ladle extensions), ladles including the same, and related systems and methods for use in molten metal processing, such as, for example, vacuum degassing.
  • Vacuum degassing is a common metallurgical process in which molten metal (e.g., steel, iron, aluminum, and/or the like) disposed within a ladle is exposed to vacuum.
  • molten metal e.g., steel, iron, aluminum, and/or the like
  • vacuum degassing may be enhanced by passing insert gasses through the molten metal (e.g., to displace reactive gasses within the molten metal, encourage mixing of the molten metal, and/or the like).
  • Vacuum degassing can be advantageously performed to remove reactive gasses, such as hydrogen, and/or undesired trace elements from molten metal, as well as limit oxidation of reactive elements and/or the formation of non-metallic oxide inclusion within the molten metal, which can ultimately provide for a better casting using the molten metal.
  • molten metal within a ladle may be subject to splashing.
  • a freeboard, or a distance between the surface of the molten metal and the top of the ladle needs to be relatively large.
  • a freeboard appropriate for vacuum degassing may be 25% or more of the otherwise usable depth of the ladle.
  • Certain molten metal processing techniques may impose a limitation on usable volume of a ladle, thereby limiting an amount of molten metal that can be otherwise transported, processed, and/or the like using the ladle.
  • Some embodiments of the present ladle upper portions e.g., ladle extensions
  • Coupled is defined as connected, although not necessarily directly, and not necessarily mechanically; two items that are “coupled” may be unitary with each other.
  • the terms “a” and “an” are defined as one or more unless this disclosure explicitly requires otherwise.
  • the term “substantially” is defined as largely but not necessarily wholly what is specified (and includes what is specified; e.g., substantially 90 degrees includes 90 degrees and substantially parallel includes parallel), as understood by a person of ordinary skill in the art. In any disclosed embodiment, the terms “substantially” and “approximately” may be substituted with “within [a percentage] of what is specified, where the percentage includes .1, 1, 5, and 10 percent. "Approximately” may refer to a range around what is specified, within which the functionality of what is specified would not be impaired.
  • a device or system that is configured in a certain way is configured in at least that way, but it can also be configured in other ways than those specifically described.
  • any embodiment of any of the apparatuses, systems, and methods can consist of or consist essentially of - rather than comprise/have/include - any of the described steps, elements, and/or features.
  • the term “consisting of or “consisting essentially of” can be substituted for any of the open-ended linking verbs recited above, in order to change the scope of a given claim from what it would otherwise be using the open- ended linking verb.
  • FIGs. 1A and IB are schematic side views of one embodiment of the present ladles, including one embodiment of the present ladle extensions.
  • FIG. 1C is a schematic top view of the ladle of FIGs. 1A and IB.
  • FIG. 2 is a schematic side view of one embodiment of the present systems for vacuum degassing of molten metal, which may be suitable for use with the ladle of FIGs. 1A and IB.
  • FIGs. 1A-1C are schematic views of one embodiment 14 of the present ladles, including one embodiment 22 of the present ladle extensions.
  • Ladle 14 can be a vessel used for receiving, transporting, processing, pouring, and/or the like molten metal.
  • ladle 14 can include a lower portion 18 and an upper portion 22, sometimes referred to as a ladle extension, that can be removably coupled to the lower portion (described in more detail below).
  • Lower portion 18 can include a sidewall 26 that extends between a top end 30 and a bottom end 34 to define an interior volume 38.
  • Top end 30 of lower portion 18 can be open; for example, the top end can define an opening 42 in communication with interior volume 38 and through which molten metal can be provided to and from the interior volume.
  • Bottom end 34 of lower portion 18 can be closed in that the bottom end is impermeable to molten metal; nevertheless, portion(s) of the closed bottom end, such as porous plug 46, can be permeable to gas (e.g., to facilitate vacuum degassing, as described in more detail below).
  • Lower portion 18 can be sized to hold any suitable amount of molten metal, such as, for example, approximately 160 tons of molten steel.
  • Lower portion 18 can comprise any suitable material, such as, for example, steel, and can include a refractory material (e.g., a refractory lining disposed on an inner surface of sidewall 26 and/or top end 30), such as, for example, alumina, magnesia, silica, and/or the like.
  • a lower portion e.g., 18
  • Upper portion 22 of ladle 14 can have a sidewall 50 extending between a bottom end 54 and a top end 58 to define an interior volume 62.
  • Bottom end 54 of upper portion 22 can be open in that the bottom end defines an opening 66 in communication with interior volume 62.
  • top end 58 of upper portion 22 can be open in that the top end defines an opening 70 in communication with interior volume 62.
  • bottom end 54 and top end 58 of upper portion 22 each define a single opening, 66 and 70, respectively; however, in other embodiments, an upper portion (e.g., 22) can include a bottom end (e.g., 54) and a top end (e.g., 58), each defining any suitable number of openings (e.g., 66, 70), such as, for example, 2, 3, 4, 5, 6, 7, 8, 9, 10, or more openings.
  • Upper portion 22 can extend any suitable height 74 between bottom end 54 and top end 58, such as, for example, from 20 to 50 centimeters (cm), which can be selected based upon a desired amount of freeboard to be added to ladle 14 when the upper portion is coupled to lower portion 18.
  • upper portion 22 has a circular outer perimeter (FIG. 1C) (e.g., which corresponds to a circular outer perimeter of lower portion 18); however, in other embodiments, an upper portion (e.g., 22) can have any suitable shape, such as, for example, having an outer perimeter that is square, rectangular, or otherwise polygonal, elliptical, or otherwise rounded.
  • Upper portion 22 can comprise any suitable material, such as, for example, steel, and can include a refractory material (e.g., a refractory lining disposed on an inner surface of sidewall 50, top end 58, bottom end 54, and/or the like), which can facilitate removal of the upper portion from lower portion 18.
  • upper portion 22 of ladle 14 can be removably coupled to lower portion 18 of the ladle such that, when molten metal is disposed within the lower portion, the upper portion increases the freeboard of the ladle (e.g., from 78a to 78b, as shown in FIG. IB).
  • Upper portion 22 can be removably coupled to lower portion 18 such that, for example, bottom end 54 of the upper portion is coupled to top end 30 of the lower portion, sidewall 50 of the upper portion contributes to the freeboard of ladle 14, at least a portion of an inner surface 82 of sidewall 50 of the upper portion is substantially flush with at least a portion of an inner surface 86 of sidewall 26 of the lower portion, interior volume 62 of the upper portion is in communication with interior volume 38 of the lower portion, and/or the like.
  • Such removable coupling between an upper portion (e.g., 22) and a lower portion (e.g., 18) can be accomplished in any suitable fashion, such as, for example, via fastener(s) (e.g., pins), engaging features of the upper portion and the lower portion (e.g., projection(s) of one of the upper portion and the lower portion that are receivable by recess(es) of the other of the upper portion and the lower portion), a weight of the upper portion (e.g., the upper portion can rest on the lower portion), hinge(s), clamp(s), and/or the like.
  • fastener(s) e.g., pins
  • engaging features of the upper portion and the lower portion e.g., projection(s) of one of the upper portion and the lower portion that are receivable by recess(es) of the other of the upper portion and the lower portion
  • a weight of the upper portion e.g., the upper portion can rest on the lower portion
  • Bottom end 54 of upper portion 22 can have opening(s) (e.g., 66) that correspond to (e.g., having substantially similar shape(s), dimension(s), and/or the like as) opening(s) (e.g., 42) of top end 30 of lower portion 18.
  • opening 66 of bottom end 54 of upper portion 22 can have a maximum first transverse dimension 90
  • opening 42 of top end 30 of lower portion 18 can have a maximum second transverse dimension 94
  • the first transverse dimension can be substantially equal to the second transverse dimension.
  • Upper portion 22 can extend a first height (e.g., height 74) between bottom end 54 and top end 58, lower portion 18 can extend a second height 98 between bottom end 34 and top end 30, and the first height can be 5, 10, 15, 20, 25, 30, 35, 40%, or more (e.g., from 10 to 30%) of the second height.
  • upper portion 22 can be removably coupled to lower portion 18 to provide for a (e.g., temporary) increase of the freeboard of ladle 14, allowing the ladle to be used in molten metal processing techniques that may require an increased freeboard, such as vacuum degassing, without unduly limiting an amount of molten metal that can be otherwise transported, processed, and/or the like using the ladle.
  • System 10 can include a vacuum chamber 102 within which ladle 14 can be disposed such that the vacuum chamber can be used to vacuum degas molten metal disposed within the ladle.
  • vacuum chamber 102 can include a housing 106 defining an interior volume 1 10 and an opening 1 14 through which ladle 14, or at least lower portion 18 thereof, can be passed through the housing and into the interior volume.
  • Vacuum chamber 102 can include a cover 1 18 (e.g., a lid) that can be (e.g., removably, pivotally, and/or slidably) coupled to housing 106 to cover and seal opening 1 14.
  • Vacuum chamber 102 can include a port 122 through which fluid may be communicated (e.g., generally along a direction indicated by arrow 126), for example, using a vacuum pump, to reduce an internal pressure within interior volume 110.
  • vacuum chamber 102 can include a hopper 130 through which additives, such as alloying additives, can be provided to molten metal disposed within interior volume 110.
  • ladle 14, and more particularly, lower portion 18, can include a porous plug 46 through which inert gas(ses), such as, for example, argon, helium, and/or the like, can be supplied (e.g., generally along a direction indicated by arrow 134) to molten metal disposed within the lower portion.
  • inert gas(ses) such as, for example, argon, helium, and/or the like
  • reactive gas(ses) such as, for example, oxygen, carbon dioxide, and/or the like within the molten metal may be displaced by such inert gas(ses), mixing of the molten metal can be encouraged, and/or the like, thereby facilitating the vacuum degassing process.
  • an upper portion (e.g., 22) of a ladle (e.g., 14) can be a component of a vacuum chamber (e.g., 102).
  • an upper portion (e.g., 22) of a ladle (e.g., 14) can be coupled to a vacuum chamber (e.g., 102) such that, for example, when a lower portion (e.g., 18) of the ladle is disposed within an interior volume (e.g., 110) of the vacuum chamber such that vacuum degassing of molten metal disposed within the lower portion can be performed, the upper portion is coupled to the lower portion, and, in such embodiments, the upper portion can remain coupled to the vacuum chamber after the lower portion is removed from the interior volume.
  • an upper portion (e.g., 22) of a ladle (e.g., 14) can be coupled to a cover (e.g., 118) of a vacuum chamber (e.g., 102) such that, for example, when a lower portion (e.g., 18) of the ladle is disposed within an interior volume (e.g., 110) of the vacuum chamber, placement of the cover to seal at least a portion of the vacuum chamber may couple the upper portion to the lower portion.
  • Some embodiments of the present methods for processing molten metal disposed within a lower portion (e.g., 18) of a ladle (e.g., 14), the lower portion including a closed bottom end (e.g., 34), an open top end (e.g., 30), and a sidewall (e.g., 26) extending between the bottom end and the top end, comprise coupling an open bottom end (e.g., 54) of an upper portion (e.g., 22) of the ladle to the top end of the lower portion, the upper portion further including a top end (e.g., 58) and a sidewall (e.g., 50) extending between the bottom end and the top end, wherein the coupling is performed such that the upper portion increases the freeboard of the ladle (e.g., from 78a to 78b, as shown in FIG. IB).
  • Some methods comprise removing the upper portion from the lower portion.
  • Some methods comprise, after the coupling of the upper portion to the lower portion is performed, applying vacuum (e.g., using vacuum chamber 102) to the molten metal. Some methods comprise passing a gas, such as, for example, an inert gas, through the molten metal. Some methods comprise removing the upper portion from the lower portion after the applying vacuum to the molten metal is performed.
  • applying vacuum e.g., using vacuum chamber 102
  • Some methods comprise passing a gas, such as, for example, an inert gas, through the molten metal.
  • Some methods comprise removing the upper portion from the lower portion after the applying vacuum to the molten metal is performed.
  • Some embodiments of the present apparatuses comprise a removable upper portion of a ladle, the upper portion including: an open bottom end, a top end, and a sidewall extending between the bottom end and the top end, wherein the bottom end of the upper portion is configured to be removably coupled to an open top end of a lower portion of a ladle, the lower portion further including a closed bottom end and a sidewall extending between the top end and the bottom end, such that, when molten metal is disposed within the lower portion, the upper portion increases the freeboard of the ladle.
  • Some apparatuses comprise the lower portion of the ladle.
  • Some embodiments of the present apparatuses include a ladle comprising: a lower portion having a closed bottom end, an open top end, and a sidewall extending between the bottom end and the top end, and an upper portion having an open bottom end, a top end, and a sidewall extending between the bottom end and the top end, wherein the bottom end of the upper portion is configured to be removably coupled to the top end of the lower portion such that, when molten metal is disposed within the lower portion, the upper portion increases the freeboard of the ladle.
  • the lower portion is sized to hold approximately 160 tons of molten metal.
  • the top end of the upper portion is open.
  • the upper portion extends a height between the bottom end and the top end that is from 20 to 50 centimeters (cm).
  • the upper portion comprises a refractory material.
  • the refractory material comprises at least one of: alumina, silica, and magnesia.
  • the upper portion extends a first height between the bottom end and the top end
  • the lower portion extends a second height between the bottom end and the top end
  • the first height is from 10 to 30% of the second height.
  • the bottom end of the upper portion defines an opening having a maximum first transverse dimension
  • the top end of the lower portion defines an opening having a maximum second transverse dimension
  • the first transverse dimension is substantially equal to the second transverse dimension.
  • an inner surface of the sidewall of the upper portion is substantially flush with an inner surface of the sidewall of the lower portion.
  • Some embodiments comprise a vacuum chamber, wherein the ladle is configured to be disposed within the vacuum chamber.
  • Some embodiments of the present methods for processing molten metal disposed within a lower portion of a ladle, the lower portion including a closed bottom end, an open top end, and a sidewall extending between the bottom end and the top end comprise: coupling an open bottom end of an upper portion of the ladle to the top end of the lower portion, the upper portion further including a top end and a sidewall extending between the bottom end and the top end, wherein the coupling is performed such that the upper portion increases the freeboard of the ladle.
  • Some embodiments comprise removing the upper portion from the lower portion.
  • Some embodiments comprise, after the coupling the upper portion to the lower portion is performed, applying vacuum to the molten metal. Some embodiments comprise passing a gas through the molten metal. Some embodiments comprise removing the upper portion from the lower portion after the applying vacuum to the molten metal is performed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

La présente invention comprend des parties supérieures amovibles de poches de coulée (par exemple, des extensions de poches de coulée), des poches de coulée comprenant celles-ci, et des procédés associés destinés à être utilisés dans le traitement du métal fondu. Certaines parties supérieures amovibles des poches de coulée comprennent une extrémité inférieure ouverte, une extrémité supérieure et une paroi latérale s'étendant entre l'extrémité inférieure et l'extrémité supérieure, l'extrémité inférieure de la partie supérieure étant configurée pour être couplée de manière amovible à une extrémité supérieure ouverte d'une partie inférieure d'une poche de coulée, la partie inférieure comprenant en outre une extrémité inférieure fermée et une paroi latérale s'étendant entre l'extrémité supérieure et l'extrémité inférieure, de telle sorte que, lorsque le métal fondu est disposé à l'intérieur de la partie inférieure, la partie supérieure augmente le franc-bord de la poche de coulée.
PCT/IB2017/052883 2016-05-23 2017-05-16 Parties supérieures amovibles de poches de coulée, poches de coulée comprenant celles-ci, et systèmes et procédés associés destinés à être utilisés dans le traitement du métal fondu Ceased WO2017203394A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662340274P 2016-05-23 2016-05-23
US62/340,274 2016-05-23

Publications (1)

Publication Number Publication Date
WO2017203394A1 true WO2017203394A1 (fr) 2017-11-30

Family

ID=58794127

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2017/052883 Ceased WO2017203394A1 (fr) 2016-05-23 2017-05-16 Parties supérieures amovibles de poches de coulée, poches de coulée comprenant celles-ci, et systèmes et procédés associés destinés à être utilisés dans le traitement du métal fondu

Country Status (1)

Country Link
WO (1) WO2017203394A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647019A (en) * 1986-04-01 1987-03-03 Union Carbide Corporation Very small refining vessel
US4708738A (en) * 1986-04-01 1987-11-24 Union Carbide Corporation Method for refining very small heats of molten metal
JP3458424B2 (ja) * 1993-10-29 2003-10-20 Ｊｆｅスチール株式会社 溶鋼の真空脱炭方法
CN101352755A (zh) * 2008-09-18 2009-01-28 冬燕 多个滑动水口钢水包倒包脱气和真空铸锭的设备和工艺
DE102009036699A1 (de) * 2009-08-07 2011-02-10 Refratechnik Holding Gmbh Pfannenrandstein

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647019A (en) * 1986-04-01 1987-03-03 Union Carbide Corporation Very small refining vessel
US4708738A (en) * 1986-04-01 1987-11-24 Union Carbide Corporation Method for refining very small heats of molten metal
JP3458424B2 (ja) * 1993-10-29 2003-10-20 Ｊｆｅスチール株式会社 溶鋼の真空脱炭方法
CN101352755A (zh) * 2008-09-18 2009-01-28 冬燕 多个滑动水口钢水包倒包脱气和真空铸锭的设备和工艺
DE102009036699A1 (de) * 2009-08-07 2011-02-10 Refratechnik Holding Gmbh Pfannenrandstein

Similar Documents

Publication Publication Date Title
US10458886B2 (en) Apparatus and method for simultaneous sampling of material at multiple depths
US10086430B2 (en) Method for producing iron metal castings
CN104001902A (zh) 一体式高温合金调压精密铸造装置
CN107159857B (zh) 一种防止开浇过程钢液二次氧化的方法
WO2017203394A1 (fr) Parties supérieures amovibles de poches de coulée, poches de coulée comprenant celles-ci, et systèmes et procédés associés destinés à être utilisés dans le traitement du métal fondu
CN104057070B (zh) 一种浇铸铜阳极板铸模的模具
WO2023238113A1 (fr) Appareil de coulée de mousse perdue d'un métal à l'aide d'un vide pendant la solidification et procédé amélioré de coulée de mousse perdue d'un métal à l'aide de l'appareil
CA2441342A1 (fr) Installation de transfert de metaux liquides d'un recipient collecteur dans un recipient recepteur
CA2770823C (fr) Louche de versement de metal en fusion
CA3030693C (fr) Entonnoir de panier de coulee
KR101597742B1 (ko) 금속 용탕 여과 장치
CN204035550U (zh) 连铸中间包水口用密封吹氩保护的装置
JP5361212B2 (ja) タンディッシュへの溶鋼注入方法
CN103632837B (zh) 浇注模具
JPH05293634A (ja) 鋳造用等の溶湯運搬炉
KR20110059441A (ko) 극저탄소강의 진공정련방법
RU2015122359A (ru) Способ внепечной обработки стали
EP1750075A1 (fr) Creuset pour le traitement de métal liquide et et son procédé de fabrication
ZA200600119B (en) Method for determining reuse or disposal of a refractory plate and device therefor
US9403209B2 (en) Methods for sand core gas evacuation and related systems and apparatus
US20020024173A1 (en) Tundish cover
JPS6229472Y2 (fr)
JP2015093293A (ja) 取鍋自然開孔率の向上方法
KR20160077832A (ko) 용탕 수강 장치
RU114463U1 (ru) Устройство дегазации стали

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17726376

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17726376

Country of ref document: EP

Kind code of ref document: A1