EP2543455B1 - Feuerfeste keramische Schieberplatte und zugehöriges Schieberplattenset - Google Patents

Feuerfeste keramische Schieberplatte und zugehöriges Schieberplattenset Download PDF

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Publication number
EP2543455B1
EP2543455B1 EP11173215.2A EP11173215A EP2543455B1 EP 2543455 B1 EP2543455 B1 EP 2543455B1 EP 11173215 A EP11173215 A EP 11173215A EP 2543455 B1 EP2543455 B1 EP 2543455B1
Authority
EP
European Patent Office
Prior art keywords
sliding plate
discharge openings
sectional area
set according
cross sectional
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.)
Active
Application number
EP11173215.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2543455A1 (de
Inventor
Michelitsch
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.)
Refractory Intellectual Property GmbH and Co KG
Original Assignee
Refractory Intellectual Property GmbH and Co KG
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
Priority to ES11173215.2T priority Critical patent/ES2452553T3/es
Application filed by Refractory Intellectual Property GmbH and Co KG filed Critical Refractory Intellectual Property GmbH and Co KG
Priority to EP11173215.2A priority patent/EP2543455B1/de
Priority to PL11173215T priority patent/PL2543455T3/pl
Priority to RS20140093A priority patent/RS53188B/en
Priority to EA201301299A priority patent/EA025092B1/ru
Priority to US14/125,365 priority patent/US9375786B2/en
Priority to UAA201314873A priority patent/UA107058C2/uk
Priority to BR112013033640-4A priority patent/BR112013033640A2/pt
Priority to JP2014517689A priority patent/JP2014518158A/ja
Priority to PCT/EP2012/062516 priority patent/WO2013007526A2/de
Priority to KR1020137033943A priority patent/KR101550518B1/ko
Priority to CN201280032216.5A priority patent/CN103619513B/zh
Publication of EP2543455A1 publication Critical patent/EP2543455A1/de
Priority to ZA2013/09725A priority patent/ZA201309725B/en
Application granted granted Critical
Publication of EP2543455B1 publication Critical patent/EP2543455B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/28—Plates therefor
    • 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
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • 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
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/24—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings characterised by a rectilinearly movable plate

Definitions

  • the invention relates to a slide plate set of a refractory ceramic slide plate and at least one further plate for aligned contact with corresponding main surfaces in their functional position.
  • a single slide plate or the associated slide plate set are components of a slide valve closure (slide system) for controlling the outflow and outflow rate of a molten metal from a metallurgical vessel, such as a ladle or an intermediate container (English: tundish).
  • Slide systems of the type mentioned include so-called linear slide and rotary valve. They can include two or more plates. In this case, at least one of the plates is movable (in the case of a linear slide: linearly movable, in the case of a rotary slide valve: rotationally movable). Each plate has two parallel main surfaces and at least one opening extending between the main surfaces, that is perpendicular to the main surfaces.
  • corresponding openings of the plates can be offset, partially overlapping or aligned with each other to adjust the mass and velocity of the melt passed therethrough or to interrupt the melt flow.
  • All panels are made of a refractory ceramic material capable of withstanding the high temperatures of the molten metal (for example 1500 ° C). In particular, when opening and closing the slide closure, there are strong corrosion phenomena of the refractory material.
  • the EP 0 373 287 A2 describes a slide plate having a plurality of flow openings, so that the slide plate can be used even if the first flow opening is worn by the second flow opening is used to control the slide closure.
  • the invention has for its object to offer a slide plate set that allows optimized flow of the passed molten metal.
  • the shortest distance between two circular openings is the distance along a straight line passing through the centers of the openings. Often, this straight line will define the direction of displacement of the slide plate in a linear slide.
  • displacement direction of the slide plate is basically a straight line in a linear slide, with a rotary slide the direction of displacement runs along a circular arc.
  • a first partial flow flows through the spout opening of the further plate of the spool closure and then through a portion of the first spout opening, while a second partial flow also flows through the spout opening of the further (usually stationary) plate of the spool closure and then through at least a portion of the second spout opening of the spool plate ,
  • the essential feature of the slide plate is thus to allow optimized control with less wear via at least one second pouring hole (a second pouring opening), which can be switched fluidically at least partially parallel to the first pouring hole.
  • the vast majority of the pouring stream can be poured off via a small pouring spout, which is brought completely under the spout opening of the associated (further) plate of the spool closure.
  • the larger spout opening can serve together with the other opening for fine control of the flow rate of the molten metal, depending after, to what extent it is additionally brought into fluid communication with the spout opening of the further plate (s).
  • a reduced amount of melt that flows through a restricted spout opening in the constellation described above causes only less erosion / corrosion.
  • the risk is reduced that air is sucked in the region of the slide closure, provided that the casting takes place largely on the smaller spout opening and only sections of the larger spout opening are also in fluid communication with the spout opening of the associated plate.
  • This is due to the fact that the melt flow through the smaller spout opening then takes place centrally (for example coaxially) with respect to the spout openings of the further plates.
  • the spout opening of the slide plate always has a clearance from the boundary wall of the spout opening of the associated (usually solid) plate. This too is evident from the following description of the figures.
  • the shortest distance from two adjacent spout openings is 0.01 to 0.5 times the largest chord of the two spout openings.
  • This distance may, in one embodiment, be limited to a lower limit of 0.05 and / or an upper limit of 0.35.
  • An alternative lower limit is 0.1, another possible upper limit is 0.25 or 0.30.
  • An embodiment of the invention provides that in the region of at least one main surface, the sum of the cross-sectional area of the small-cross-sectional area spout and x times the cross-sectional area of the large cross-sectional area spout is greater than or equal to the cross-sectional area of the large cross-section spout x has a value ⁇ 0.4 and ⁇ 0.95, in particular a value ⁇ 0.9, ⁇ 0.8 or ⁇ 0.7 or ⁇ 0.6 with lower limit values ⁇ 0.45, ⁇ 0.50 or ⁇ 0.55.
  • QS20 is the cross-sectional area of the small cross-sectional area spout and QS10 is the cross-sectional area of the large cross-sectional area spout.
  • suitable lower limits for x are 0.10; 0.20 or 0.25 and appropriate upper limits for x at 0.90; 0.80 or 0.70, where QS defines the respective circle diameter.
  • ⁇ QS ⁇ 20 detects the cross-sections of the spout openings that can be brought into fluid communication with a spout opening of an adjacent plate simultaneously with the spout with large cross-section (QS10), wherein ⁇ QS20 does not contain QS10.
  • the spout opening (s) it is not absolutely necessary that the spout opening (s) have a circular cross section, although this is preferred.
  • the spout openings can have any geometric cross-section, for example rectangular or polygonal.
  • the cross-sectional area of the spout openings between the main surfaces is constant, so that results in a circular cross-section, a cylindrical spout opening.
  • the invention is not limited to such embodiments, it also includes spout openings, which for example have a funnel-shaped profile.
  • the centers of the spout openings along a main surface may lie on a common straight line in the case of a linear spool closure and on a common circular line in the case of a rotary spool closure. This information is not in the exact mathematical sense, but to understand technical, for example, taking into account production tolerances. You can also be arranged offset to the direction of displacement, as shown in the following embodiment.
  • the complete slide plate set (a complete slide closure), consists of at least one slide plate of the aforementioned type and at least one further plate, wherein corresponding plates are aligned in their functional position with their respective main surfaces flat against each other.
  • the at least one further plate has at least one spout opening, the cross-sectional area and arrangement of which are selected such that it completely and / or partially covers one or more spout openings of the slide plate as a function of the position of the slide plate.
  • slide plate like the further plate (s), can be designed according to the state of the art with respect to its respective material or its assembly (for example in a metal cassette).
  • the value 50% can be extended to 60%, but smaller values ( ⁇ 45%, ⁇ 40%, ⁇ 30%) are preferred, so that as much melt as possible flows through the smaller opening.
  • the centers of all spouts are preferably along corresponding major surfaces in a common plane that is perpendicular to the major surfaces. This applies to a linear slide gate valve.
  • the centers of all spouts are along corresponding major surfaces in a common cylinder surface surface that is perpendicular to the main surfaces.
  • FIG. 1 shows a slide plate S having an upper main surface SO and a parallel lower main surface SU and in the top view (top in FIG. 1 ) has approximately an oval shape.
  • the larger spout opening S10 has a diameter SS10.
  • the diameter of the smaller spout opening S20 is designated SS20.
  • Both spout openings S10, S20 have a constant circular cross-section between the main surfaces SO, SU, wherein the associated central longitudinal axes are denoted by MS 10, MS20.
  • FIG. 2 shows the assignment of such a slide plate S in a 3-plate slide valve closure.
  • the corresponding slide plate set comprises three plates, namely an upper, fixed plate PO and a lower, fixed plate PU. Between two or the bottom POU of the plate PO and the top PUO of the plate PU extends the slide plate S.
  • the plates PO, PU each have a pouring opening PO10, PU10, each with a circular cross-section and the same dimensions to the spout opening S 10 of the slide plate S.
  • the smaller spout opening S20 of the slide plate S is covered upwardly by the plate PO and bounded below by the plate PU.
  • no molten metal flows out of the above-arranged melting vessel SG or the associated sleeve H into downstream aggregates through the spout opening S20, which are denoted here only schematically by A.
  • FIG. 3 shows a position of the slide plate S, compared to the position according to FIG. 2 is shifted to the left, so that the smaller spout opening S20 is completely in the region of the spout opening PO10, but the larger spout opening S10 is still not completely removed from the covering area with the spouts PO10, PU10.
  • M melt stream
  • the partial flow M10 has approximately a speed G2 which is greater than G0.
  • the flow profile is such that a region is formed in the center, in which the flow velocity G1 is greater than G2, wherein G2 is observed in the outer region of the melt stream M20.
  • the representation according to FIG. 3 shows that due to the central position of the spout opening S20 below the spout opening PU10 a suction of external air is virtually excluded. At most in the transition region of the melt stream M10 between adjacent plates still a residual amount of external air can be sucked.
  • the inventive assignment of the two spout openings of the slide plate S thus not only increases the controllability of Schieberplattensets (the slide closure), but also improves the quality of the passed metal melt in comparison with the prior art due to lower oxidation.
  • FIG. 4 The state of the art is in FIG. 4 shown. All spout openings of all plates are identical. In a linear displacement of the slide plate S, although it comes to a throttling (reducing the flow rate) of the molten metal. In this way, however, at the same time the risk of undesired air infiltration in the transition region between adjacent plates is increased. In addition, it has been observed that in the region of the edge K of the slide plate S, a deflection of the flow and a greatly increased flow velocity of the molten metal are formed, causing high corrosion and erosion. This can be avoided with the design according to the invention.
  • FIG. 5 shows another embodiment of a linear slide plate S.
  • the diameter SS10 of the large flow passage S10 is 60 mm
  • the diameter SS20 of the small flow passage S20 is 25 mm
  • the shortest distance s1 between both spouts S10, S20 is 15 mm.
  • the result for the spout opening S10 is a cross-sectional area of 2,827 mm 2 , for S20 a value of 491 mm 2 .
  • the opening PO10 of an adjacent plate is indicated.
  • the value x for the above-mentioned formula is accordingly about 0.83.
  • the direction of displacement is indicated by VV.
  • the opening S20 is offset to the displacement direction VV (distance AB to the center of the opening S20).
  • the diameter of the spout opening PO10 is also 60 mm.
  • the distance S1 is 17 mm.
  • the spout opening S20 of the slide plate S is correspondingly completely and the spout opening S10 of the slide plate S to about 21.9% of the spout opening PU10 covered in the position shown.
  • FIG. 7 is an embodiment similar FIG. 6 shown, wherein the spout openings, however, have no circular cross-section, but each having a square cross-section. It is readily apparent that in the illustrated allocation of the spouts PO10 of upper plate PO and slide plate S, the degree of coverage with the smaller spout opening S20 is 100% and the degree of coverage with the larger spout opening S10 is 50%.
  • FIG. 8 Finally, a representation is similar FIG. 5 However, for a rotary valve closure, wherein the circular displacement path is shown with VV.
  • the slide plate S may consist of a carbon-bonded material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Sliding Valves (AREA)
EP11173215.2A 2011-07-08 2011-07-08 Feuerfeste keramische Schieberplatte und zugehöriges Schieberplattenset Active EP2543455B1 (de)

Priority Applications (13)

Application Number Priority Date Filing Date Title
EP11173215.2A EP2543455B1 (de) 2011-07-08 2011-07-08 Feuerfeste keramische Schieberplatte und zugehöriges Schieberplattenset
PL11173215T PL2543455T3 (pl) 2011-07-08 2011-07-08 Ognioodporna ceramiczna płyta suwakowa i przynależny zestaw ceramicznych płyt suwakowych
RS20140093A RS53188B (en) 2011-07-08 2011-07-08 FIRE-RESISTANT CERAMIC SLIDING PANEL AND ASSOCIATED SLIDING PANEL ASSEMBLY
ES11173215.2T ES2452553T3 (es) 2011-07-08 2011-07-08 Placa corredera de cerámica ignífuga y conjunto de placa corredera correspondiente
CN201280032216.5A CN103619513B (zh) 2011-07-08 2012-06-27 耐火的陶瓷滑板和所属的滑板套件
UAA201314873A UA107058C2 (uk) 2011-07-08 2012-06-27 Вогнетривка керамічна шиберна плита та відповідний комплект із шиберною плитою
EA201301299A EA025092B1 (ru) 2011-07-08 2012-06-27 Огнеупорная керамическая шиберная плита и соответствующий комплект плит для шиберного затвора
JP2014517689A JP2014518158A (ja) 2011-07-08 2012-06-27 耐火性セラミックスライディングプレート及びスライディングプレートセット
PCT/EP2012/062516 WO2013007526A2 (de) 2011-07-08 2012-06-27 Feuerfeste keramische schieberplatte und zugehöriges schieberplattenset
KR1020137033943A KR101550518B1 (ko) 2011-07-08 2012-06-27 내화 세라믹 슬라이딩 플레이트 및 연계된 슬라이딩 플레이트 세트
US14/125,365 US9375786B2 (en) 2011-07-08 2012-06-27 Refractory ceramic slide plate and associated slide plate set
BR112013033640-4A BR112013033640A2 (pt) 2011-07-08 2012-06-27 placa deslizante de cerâmicos refratária e conjunto de placa deslizante associadas
ZA2013/09725A ZA201309725B (en) 2011-07-08 2013-12-23 Refractory ceramic slide plate and associated slide plate set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11173215.2A EP2543455B1 (de) 2011-07-08 2011-07-08 Feuerfeste keramische Schieberplatte und zugehöriges Schieberplattenset

Publications (2)

Publication Number Publication Date
EP2543455A1 EP2543455A1 (de) 2013-01-09
EP2543455B1 true EP2543455B1 (de) 2014-01-15

Family

ID=44487131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11173215.2A Active EP2543455B1 (de) 2011-07-08 2011-07-08 Feuerfeste keramische Schieberplatte und zugehöriges Schieberplattenset

Country Status (13)

Country Link
US (1) US9375786B2 (ko)
EP (1) EP2543455B1 (ko)
JP (1) JP2014518158A (ko)
KR (1) KR101550518B1 (ko)
CN (1) CN103619513B (ko)
BR (1) BR112013033640A2 (ko)
EA (1) EA025092B1 (ko)
ES (1) ES2452553T3 (ko)
PL (1) PL2543455T3 (ko)
RS (1) RS53188B (ko)
UA (1) UA107058C2 (ko)
WO (1) WO2013007526A2 (ko)
ZA (1) ZA201309725B (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103240410B (zh) * 2013-05-17 2016-04-13 莱芜钢铁集团有限公司 通过分离回收引流砂提高钢水洁净度的滑动水口装置
TWI717455B (zh) * 2016-01-25 2021-02-01 比利時商維蘇威集團股份有限公司 滑動閘閥板、金屬殼及滑動閘閥

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1507852A (en) * 1922-03-09 1924-09-09 Illinois Pacific Glass Co Glass feeder
US3352465A (en) * 1965-05-06 1967-11-14 United States Steel Corp Refractory closure member for bottom pour vessels
CH640442A5 (de) * 1979-05-25 1984-01-13 Stopinc Ag Drehschiebeverschluss fuer metallurgische gefaesse, insbesondere stahlgiesspfannen.
JPS5844959A (ja) * 1981-09-11 1983-03-16 Nippon Kokan Kk <Nkk> 溶融金属容器の注出口開閉装置における固定盤と摺動盤の装着使用方法
CA1200384A (en) * 1982-04-22 1986-02-11 Francis L. Kemeny, Jr. Ladle slide gate collector nozzle
CH663366A5 (en) * 1983-11-18 1987-12-15 Stopinc Ag Sliding gate nozzle for molten materials, in particular molten metals
WO1989002801A1 (en) * 1987-09-24 1989-04-06 Kevin Thompson Process and device for regulating the inflow of liquid into a container
DE3869609D1 (de) 1988-08-31 1992-04-30 Metacon Ag Feuerfester plattensatz fuer dreiplattenschieberverschluesse.
IT218110Z2 (it) 1988-12-14 1992-03-30 Sirma Nuova Dispositivo di colata continua di metalli
LU87752A1 (fr) 1990-06-20 1992-01-15 Arbed Amelioration aux dispositifs servant a faire ecouler du metal en fusion
CN2230639Y (zh) * 1995-03-14 1996-07-10 周秉文 滑动水口装置
CN2323893Y (zh) * 1998-01-22 1999-06-16 邯郸市正泰冶金技术开发有限公司 钢包滑动水口控制装置
DE19917851C2 (de) * 1999-04-21 2003-04-10 Didier Werke Ag Drehschieberplatte
SK287454B6 (sk) * 2000-03-16 2010-10-07 Vesuvius Crucible Company Zariadenie na odmeriavanie prietoku pri kontinuálnom liatí roztaveného kovu a spôsob odmeriavania prietoku
DE10324801A1 (de) 2003-06-02 2005-01-05 Knöllinger FLO-TEC GmbH Gießpfannenschieber
JP4681399B2 (ja) * 2005-09-05 2011-05-11 新日本製鐵株式会社 鋼の連続鋳造方法

Also Published As

Publication number Publication date
WO2013007526A3 (de) 2013-06-13
EP2543455A1 (de) 2013-01-09
BR112013033640A2 (pt) 2018-06-12
EA025092B1 (ru) 2016-11-30
EA201301299A1 (ru) 2016-01-29
US20140124546A1 (en) 2014-05-08
CN103619513A (zh) 2014-03-05
RS53188B (en) 2014-06-30
UA107058C2 (uk) 2014-11-10
KR20140019841A (ko) 2014-02-17
ES2452553T3 (es) 2014-04-01
PL2543455T3 (pl) 2014-05-30
KR101550518B1 (ko) 2015-09-04
US9375786B2 (en) 2016-06-28
JP2014518158A (ja) 2014-07-28
WO2013007526A2 (de) 2013-01-17
ZA201309725B (en) 2014-10-29
CN103619513B (zh) 2016-01-20

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