EP2022581B1 - Plaque integre dans une buse superieure et leur procede de separation - Google Patents

Plaque integre dans une buse superieure et leur procede de separation Download PDF

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Publication number
EP2022581B1
EP2022581B1 EP07743806.7A EP07743806A EP2022581B1 EP 2022581 B1 EP2022581 B1 EP 2022581B1 EP 07743806 A EP07743806 A EP 07743806A EP 2022581 B1 EP2022581 B1 EP 2022581B1
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EP
European Patent Office
Prior art keywords
nozzle
plate
upper nozzle
integral unit
upper plate
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EP07743806.7A
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German (de)
English (en)
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EP2022581A4 (fr
EP2022581A1 (fr
Inventor
Junichi Funato
Shunji Sadano
Kenji Tachibana
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Krosaki Harima Corp
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Krosaki Harima Corp
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    • 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
    • B22D41/34—Supporting, fixing or centering means 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
    • B22D41/28—Plates therefor

Definitions

  • the present invention relates to an upper nozzle/plate integral unit for a sliding nozzle assembly adapted to be attached to a bottom of a molten metal vessel, such as a tundish or ladle, and used for controlling a flow rate of molten metal, such as molten steel.
  • a molten metal vessel such as a tundish or ladle
  • a sliding nozzle assembly comprises a plurality of refractory members formed with respective nozzle holes and assembled together in such a manner as to be clamped at a high pressure, wherein at least one of the refractory members is adapted to be slidably moved so as to adjust an opening degree of a molten metal passage consisting of the nozzle holes communicated with each other, to control a flow rate of molten metal, such as molten steel.
  • five refractory members consisting of an upper nozzle, an upper plate, an intermediate plate, a lower plate and a lower nozzle, are arranged in this order in a downstream direction of a molten metal stream, although there is a type using no intermediate plate.
  • the on-site operation means an operation of attaching the refractory members to a bottom of a tundish while setting a metal frame in an open position, to form a sliding nozzle assembly on site (i.e., in an on-site manner).
  • the off-site operation means an operation of replacing an entirety of a sliding nozzle assembly detachably attached to a tundish (detachable-type sliding nozzle assembly), with a new one, wherein used refractory members of the detached sliding nozzle assembly are replaced with new ones at a location distant from the tundish (i.e., in an off-site manner).
  • the operation of assembling the refractory members to form a sliding nozzle assembly in an on-site manner is performed in the following process. Firstly, the upper nozzle is applied with mortar on an outer peripheral surface thereof, and inserted into an inner hole of a nozzle-seating brick inside a tundish. Then, the upper plate is pressed against a lower surface of the upper nozzle through a joint material, and fixed to a metal frame of the sliding nozzle assembly. Subsequently, the intermediate plate and the lower plate are fixed to the metal frame. Lastly, the lower nozzle is pressed against a lower surface of the lower plate through a joint material, and fixed to the metal flame through a bayonet coupling or the like.
  • the joint material such as a shaped joint material or mortar
  • a joint between respective ones of the refractory members is likely to have a problem about a variation in thickness thereof, due to variation factors, such as a position of the nozzle-seating brick, a size of the inner hole of the nozzle-seating brick, an outer diameter of the upper nozzle, an amount of the mortar applied onto the outer peripheral surface of the upper nozzle, and a hardness of the mortar. If the thickness of the joint is excessively small, a gap will be likely to occur around the joint during use. If the thickness of the joint is excessively large, wear of the joint will be accelerated to increase a risk of molten metal leakage.
  • Patent Document 1 discloses a technique of replacingly attaching a stationary plate and a slide plate fixed to a slide plate-supporting plate, to a retainer plate provided on an outer shell of a ladle, while holding by a plate-handling rod the stationary plate and a slide plate fixed to a slide plate-supporting plate.
  • Patent Document 2 discloses a detachable-type sliding nozzle assembly adapted to be replaced by a slide-valve replacement machine together with a slide-valve casing provided on a bottom of a tundish.
  • refractory members other than an upper nozzle i.e., a slide valve (plate) and a lower nozzle, are replaced simultaneously.
  • the slide-valve casing is gripped and pulled out by a clamp arm attached to a replacement carriage, and replaced with a slide-valve casing assembled with new refractory members.
  • Patent Document 3 proposes an upper nozzle/plate integral unit comprising an upper nozzle and an upper plate integrated together without any joint therebetween.
  • this upper nozzle/plate integral unit is suitable for simultaneously replacing an upper nozzle and an upper plate as in a tundish, the upper nozzle is liable to rigidly stick to a molten metal vessel during repetitive use.
  • the stuck upper nozzle causes a problem about difficulty in detaching the sliding nozzle assembly from the tundish.
  • the upper nozzle/plate integral unit is used in the type incapable of moving away the retaining metal frame as disclosed in the Patent Document 1, the plates will conflict with the retaining metal frame to cause difficulty in pulling out and detaching the entire assembly.
  • EP-A-0 646 430 describes a refractory block for continuous casting having a plate brick and a submerged nozzle.
  • the plate brick is accommodated in a metal casing and is connected via mortar or packing to a dowel portion of a submerged nozzle previously accommodated in a cylindrical metal casing.
  • the metal casings are joined together by means of spot welding or hole-peripheral welding.
  • JP 08-39234A discloses a sliding nozzle plate having a fall prevention device in which a spring system, which generates a pressurizing force of 50 to 500N against a face abutting on the metal frame for storing a plate that becomes a reference at the time of sliding, is provided between the metal frame and the plate.
  • the present invention is made with a focus on a fact that, when an upper nozzle and an upper plate in a sliding nozzle assembly are fixedly joined together by a joining force which allows the upper nozzle and the upper plate to be easily disjoined from each other after use, while maintaining the joining during use together with other refractory members, instead of being fully fixed together, an obtained upper nozzle/plate integral unit can be easily split into the upper nozzle and the upper plate, after use.
  • the present invention provides an upper nozzle/plate integral unit capable of being split into an upper nozzle and an upper plate and detached from a molten metal vessel, after use, wherein: the upper nozzle is in contact with the upper plate through a joint material, in such a manner that respective nozzle holes of the upper nozzle and the upper plate are aligned with each other; the upper nozzle has a metal member provided on a lower end portion thereof; and the upper plate has a metal sheet provided on an upper surface thereof, wherein the metal member of the upper nozzle is weldingly joined to the metal sheet of the upper plate at two or more positions, in such a manner that a weld leg is set in the range of 2 to 5 mm, and a total weld length is set in the range of 5 to 60 mm.
  • the metal member on the lower end portion of the upper nozzle is weldingly joined to the metal sheet on the upper surface of the upper plate at two or more positions. That is, the upper nozzle is joined to the upper plate only by means similar to spot welding, i.e., only by a joining force which allows the upper nozzle and/or the upper plate to be easily detached from a joined portion therebetween.
  • spot welding i.e., only by a joining force which allows the upper nozzle and/or the upper plate to be easily detached from a joined portion therebetween.
  • the metal member to be attached onto the lower end portion of the upper nozzle it is preferable to use a metal casing which covers an outer peripheral surface of an intermediate portion and the lower end portion of the upper nozzle, or a metal band disposed on the outer peripheral surface of the lower end portion of the upper nozzle, in view of capability to retain the upper nozzle in an attached state thereto.
  • the metal sheet to be attached onto the upper surface of the upper plate it is preferable to use a metal casing which covers a lateral surface and the upper surface of the upper plate, in view of capability to retain the upper plate in an attached state thereto.
  • a doughnut disk-shaped metal sheet may be attached onto the upper surface of the upper plate. That is, the metal sheet of the upper plate in the present invention is provided as a member to be weldingly joined to the metal member on the lower end portion of the upper nozzle, and may be provided on at least a welding area of the upper surface of the upper plate.
  • the metal sheet may be a type formed by laminating a plurality of metal sheets, or may be a type a part of which is buried in the upper surface of the upper plate.
  • the metal casing which covers the lateral surface and the upper surface of the upper plate may be formed by providing a metal band or hoop around the lateral surface of the upper plate, and welding a metal sheet covering the upper surface of the upper plate, to the metal band or hoop.
  • a weld leg is set in the range of 2 to 5 mm, and a total weld length is set in the range of 5 to 60 mm. If the weld leg is less than 2 mm, the welding operation becomes technically difficult, and a joining force is liable to become insufficient. If the weld leg is greater than 5 mm, it becomes an unrealistically large value as compared with a thickness of the metal member or sheet. If the total weld length is less than 5 mm, the upper nozzle/plate integral unit is liable to be unexpectedly disjoined into the upper nozzle and the upper plate during handling.
  • weld leg and “weld length” are defined, respectively, as a width S and a length L of a weld bead in a welded portion 6 between the upper nozzle 1 and the upper plate 2, as shown in FIG. 1 .
  • a method of splitting the upper nozzle/plate integral unit into the upper nozzle and the upper plate may comprise pulling the upper plate or the sliding nozzle assembly from outside the molten metal vessel.
  • a crowbar or the like may be used for manually scooping out the upper plate so as to pull the upper plate.
  • a driving source such as a hydraulic cylinder, may be used for pulling the upper plate or the sliding nozzle assembly.
  • the above method may comprise pulling or pushing the upper nozzle toward an inside of the molten metal vessel to detach the upper nozzle from the welded portion. Further, solidified metal may be pulled away from a bottom of the molten metal vessel to allow the upper nozzle to be detached together with the solidified metal.
  • a product W of the weld leg S [mm] and the total weld length L2 [mm] is preferably set in the range of 25 to 300.
  • a condition that the product W is 25 corresponds to a condition that a calculated value of the joining force based on welding is about 0.5 t (ton), and a condition that the product W is 300 corresponds to a condition that the calculated value of the joining force based on welding is about 7 t.
  • the joining force becomes insufficient, and the upper nozzle/plate integral unit is likely to be disjoined into the upper nozzle and the upper plate during transportation and during on-site handling. If the product W is greater than 300, a joining force becomes excessively strong, which is likely to cause difficulty in detaching the upper nozzle and/or the upper plate from the welded portion, and occurrence of distortion in the sliding nozzle assembly.
  • the upper nozzle and the upper plate are welded together while ensuring a gap therebetween in advance.
  • a mortal joint between the upper nozzle and the upper plate can be formed at a constant thickness, and the joint thickness can be accurately managed by a manufacturer or the like. This makes it possible to eliminate the risk of wear of the joint due to excessive increase in joint thickness, or the risk of abnormal refractory wear or molten metal leakage due to a gap caused by excessive decrease in joint thickness, so as to achieve a stable casting operation.
  • the upper nozzle/plate integral unit of the present invention is suitably used in a detachable-type sliding nozzle assembly.
  • the detachable-type sliding nozzle assembly is pulled out after use, for example, by the replacement carriage as disclosed in the Patent Document 2.
  • the upper nozzle and/or the upper plate can be detached from the welded portion therebetween by use of the pullout force.
  • a driving force of a driving source such as a motor or a hydraulic cylinder, may be additionally used.
  • the upper nozzle/plate integral unit installed in the detachable-type sliding nozzle assembly also has an advantage of allowing the upper nozzle to be mounted to the molten metal vessel in conjunction with an operation of attaching the detachable-type sliding nozzle assembly to the molten metal vessel, so as to achieve enhanced operating efficiency.
  • the welding portion between the upper plate and the upper nozzle may be broken by a hydraulic driving force of a hydraulic ram cylinder interposed between a retaining metal frame of the detachable-type sliding nozzle assembly and the molten metal vessel.
  • a retaining metal frame formed with a concave portion having a crowbar insertion groove may be provided.
  • the upper nozzle/plate integral unit can be easily split into the upper nozzle and the upper plate by inserting a crowbar into the crowbar insertion groove, and moving the crowbar to scoop out the upper plate.
  • the use of a crowbar makes it possible to split the upper nozzle/plate integral unit in a simple and easy manner based on the principle of leverage.
  • the upper nozzle/plate integral unit has a weld leg of 2 to 4 mm and a total weld length of 10 to 20 mm to allow one person to perform the splitting operation by himself/herself, using a crowbar having an adequate length.
  • the product W of the weld leg S [mm] and the total weld length L2 [mm] is set in the range of 25 to 100 to more facilitate the splitting operation using a crowbar.
  • a condition that the product W is 25 corresponds to a condition that the calculated value of the joining force based on welding is about 0.5 t (ton), and a condition that the product W is 100 corresponds to a condition that the calculated value of the joining force based on welding is about 2 t.
  • the product W is set in the above range, one or two persons can split the upper nozzle/plate integral unit using a crowbar.
  • the upper nozzle/plate integral unit of the present invention makes it possible to manage a joint thickness between the upper nozzle and the upper plate to eliminate the risk of molten metal leakage and abnormal refractory wear, so as to achieve a stable casting operation.
  • the upper nozzle/plate integral unit can be split into the upper nozzle and the upper plate to reduce the time and effort required for detaching the upper plate from the molten metal vessel.
  • the upper nozzle/plate integral unit installed in the detachable-type sliding nozzle assembly allows the upper nozzle to be mounted to the molten metal vessel in conjunction with an operation of attaching the detachable-type sliding nozzle assembly to the molten metal vessel, so as to achieve enhanced operating efficiency.
  • An upper nozzle/plate integral unit according to a first embodiment of the present invention will be shown as one example where a metal casing which covers an outer peripheral surface of an upper nozzle is used as "a metal member provided on a lower end portion of an upper nozzle", and a metal sheet which covers an upper surface of an upper plate is used as a “metal sheet provided on an upper surface of an upper plate ".
  • FIG. 2 is a front sectional view showing the upper nozzle/plate integral unit according to the first embodiment
  • FIG. 3 is a top plan view of the upper nozzle/plate integral unit.
  • the reference numeral 10 indicates the upper nozzle/plate integral unit which comprises an upper nozzle 1 and an upper plate 2 adapted to be fitted into a lower end portion of the upper nozzle 1, and the reference numeral 3 indicates a nozzle hole.
  • the upper nozzle 1 is a generally cylindrical-shaped refractory member having a nozzle hole 3.
  • the upper nozzle 1 has a metal casing 4 which is formed to have a thickness of 0.8 mm and provided to cover an outer peripheral surface of an intermediate portion and the lower end portion thereof, except an upper end portion.
  • a gap between the upper nozzle 1 and the metal casing 4 is filled with mortar 5.
  • the upper plate 2 is a rectangular plate-shaped alumina carbon-based refractory member having a nozzle hole 3 and a cutout in each corner.
  • the upper plate 2 has a metal band 7 which is formed to have a thickness of 3 mm and provided on a lateral surface thereof, and a metal sheet 8 which is formed to have a thickness of 3 mm and provided on an upper surface of the upper plate 2 while being weldingly fixed to the band 7.
  • the metal sheet 8 has a circular-shaped cutout concentric with a raised portion 21 of the upper plate 2, and a cylindrical portion 9 formed around the cutout.
  • the cylindrical portion 9 is formed to have a thickness of 3 mm.
  • the lower end portion of the upper nozzle 1 has a recess 11 formed in a bottom surface thereof and fitted onto the raised portion 21 of the upper plate 2 through mortal 5 as a joint material.
  • a portion of the metal casing 4 on an outer peripheral surface of the lower end portion of the upper nozzle 1 is fixedly joined to the cylindrical portion 9 of the metal sheet 8 through four welded portions 6.
  • the mortar 5 in the fitting region between the raised portion 21 and the recess 11 has a thickness of 3 mm. This joint thickness can be reliably managed by measuring a joint thickness around the nozzle hole 3 using a measuring instrument after welding.
  • Each of the four welded portions 6 has a weld leg of 3 mm, and a weld length of 4 mm. Thus, a total weld length is 16 mm.
  • An upper nozzle/plate integral unit different only in weld length from that in FIG. 3 was subjected to a weld split/break test.
  • an upper nozzle/plate integral unit having a weld leg of 3 mm, a weld length of 8 mm and a total weld length of 32 mm (a product W of the weld leg S and the total weld length L2 is 96) was split at 3.4 t
  • an upper nozzle/plate integral unit having a weld leg of 3 mm, a weld length of 15 mm and a total weld length of 60 mm (the product W of the weld leg S and the total weld length L2 is 180) was split at 4.7 t.
  • FIG. 4 is a perspective view showing an upper nozzle/plate integral unit according to a second embodiment of the present invention.
  • the upper nozzle/plate integral unit according to the second embodiment will be shown as one example where a metal band attached onto an outer peripheral surface of a lower end portion of an upper nozzle is used as the "metal member provided on a lower end portion of an upper nozzle", and a metal casing which covers an upper surface of an upper plate is used as the "metal sheet provided on an upper surface of an upper plate”.
  • An upper nozzle 1 has a metal band 7 which is formed to have a width of 30 mm and a thickness of 1 mm, and attached onto an outer peripheral surface of a lower end portion thereof to serve as the metal member.
  • the band 7 has a convex portion (not shown) formed on an inner surface thereof and adapted to be fitted into a concave portion (not shown) formed in the outer peripheral surface of the upper nozzle 1 so as to facilitate retaining therebetween. Further, the band 7 and the upper nozzle 1 are joined together by filling a gap therebetween using mortar with a high bonding force.
  • An upper plate 2 has a metal casing 4 which is formed to have a thickness of 1.6 mm, and provided to cover a lateral surface and an upper surface (except a raised portion) thereof.
  • a lower end of the band 7 attached onto the outer peripheral surface of the lower end portion of the upper nozzle 1 is fixed to the metal casing 4 through four welded portions 6.
  • Each of the four welded portions 6 has a weld leg of 2 mm, and a weld length of 4 mm. Thus, a total weld length is 16 mm.
  • a method of splitting the upper nozzle/plate integral unit according to the first or second embodiment will be described based on one example where a detachable-type sliding nozzle assembly having the upper nozzle/plate integral unit is attached to a tundish. More specifically, an operation of detaching a used detachable-type sliding nozzle assembly from a tundish to replace it with a detachable-type sliding nozzle assembly having new refractory members will be described below.
  • a detachable-type sliding nozzle assembly 100 in FIG. 5 comprises the upper nozzle/plate integral unit as shown in FIG. 2 , an intermediate plate, a lower plate and a lower nozzle, which are housed in a metal frame, and adapted to be detachably attached to a bottom of a tundish together with the metal frame.
  • the sliding nozzle assembly 100 illustrated in FIG. 5 is fixedly attached to a tundish (not shown) by fastening a fixing bracket (not shown) provided on a lateral surface of the assembly to a bolt provided on a shell (not shown) of the tundish, using a nut.
  • the sliding nozzle assembly 100 has two splitting brackets 20 provided on respective ones of opposed longitudinally-extending lateral surfaces thereof, and a hydraulic ram cylinder 30 having an output of 5 of force is detachably attached to each of the splitting brackets 20.
  • a hook of a crane is attached to an upper portion of the sliding nozzle assembly 100, and then the fixing between the tundish and the sliding nozzle assembly 100 is released by loosening the nut fastened to the bolt provided on the shell of the tundish. Subsequently, the sliding nozzle assembly 100 is hung by the crane, and the hydraulic ram cylinders 30 are attached to the respective brackets 20 in such a manner as to be interposed between the tundish and the sliding nozzle assembly 100.
  • a hydraulic pressure of the hydraulic ram cylinders 30 is increased to break the welded portions between the upper nozzle and the upper plate by a hydraulic driving force of the hydraulic ram cylinders 30.
  • the welded portions between the upper nozzle and the upper plate can be broken when the output force of the hydraulic ram cylinders 30 is in the range of 1 to 2 t.
  • the upper nozzle left in the tundish can be detached in such a manner that it is pulled out from outside the tundish or pushed out from inside the tundish.
  • a method of splitting the upper nozzle/plate integral unit according to the first or second embodiment will be described based on one example of an operation of replacing a refractory member in an on-site manner without detaching the entire upper nozzle/plate integral unit from a tundish.
  • FIG. 6 is a sectional view for explaining the operation.
  • a retaining metal frame 12 has a concave portion for receiving therein the upper plate 2, and the concave portion is formed with a groove 13.
  • a crowbar 14 is manually inserted into the groove 13, and moved to scoop out the upper plate 2 so as to break welded portions based on the principle of leverage to split the upper nozzle/plate integral unit into the upper nozzle 1 and the upper plate 2. Then, the upper nozzle 1 can be pulled out using a hydraulic power unit or the like.
  • the upper nozzle/plate integral unit has three welded portions, wherein a weld leg is 3 mm, and a total weld length is 9 mm.
  • a weld leg is 3 mm
  • a total weld length is 9 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (4)

  1. Unité intégrale de plaque/buse supérieure (10) pouvant être partagée en une buse supérieure (1) et en une plaque supérieure (2) et détachée d'un récipient de métal en fusion, après utilisation, dans laquelle :
    ladite buse supérieure (1) est en contact avec ladite plaque supérieure (2) par un matériau d'assemblage, de sorte que les trous de buse (3) respectifs de ladite buse supérieure (1) et de ladite plaque supérieure (2) sont alignés entre eux ;
    ladite buse supérieure (1) a un élément métallique (4) prévu sur sa partie d'extrémité inférieure ; et
    ladite plaque supérieure (2) a une feuille métallique (8) prévue sur sa surface supérieure,
    dans laquelle ledit élément métallique (4) de ladite buse supérieure est assemblé par soudage à ladite feuille métallique (8) de ladite plaque supérieure dans deux ou plusieurs positions, de sorte qu'une patte de soudure est de l'ordre de 2 à 5 mm, et une longueur totale de soudure est de l'ordre de 5 à 60 mm.
  2. Unité intégrale de plaque/buse supérieure (10) selon la revendication 1, dans laquelle un produit (W) de ladite patte de soudure (S [mm]) et de ladite longueur totale de soudure (L2 [mm]) est de l'ordre de 25 à 300.
  3. Unité intégrale de plaque/buse supérieure (10) selon la revendication 1 ou 2, qui est installée dans un ensemble de buse coulissante (100) de type détachable.
  4. Procédé pour partager l'unité intégrale de plaque/buse supérieure (10) selon la revendication 3, comprenant les étapes consistant à :
    intercaler un cylindre de vérin hydraulique (30) entre l'ensemble de buse coulissante (100) de type détachable et le récipient de métal en fusion ; et
    déplacer ledit cylindre de vérin hydraulique (30) de sorte que ledit ensemble de buse coulissante (100) de type détachable est détaché dudit récipient de métal en fusion tout en séparant ladite unité intégrale de plaque/buse supérieure (10) en dite buse supérieure (1) et en dite plaque supérieure (2).
EP07743806.7A 2006-05-19 2007-05-21 Plaque integre dans une buse superieure et leur procede de separation Active EP2022581B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006140310 2006-05-19
PCT/JP2007/060372 WO2007136034A1 (fr) 2006-05-19 2007-05-21 plaque intÉgrÉe dans une buse supÉrieure et leur procÉdÉ de sÉparation

Publications (3)

Publication Number Publication Date
EP2022581A1 EP2022581A1 (fr) 2009-02-11
EP2022581A4 EP2022581A4 (fr) 2010-01-27
EP2022581B1 true EP2022581B1 (fr) 2014-10-08

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EP07743806.7A Active EP2022581B1 (fr) 2006-05-19 2007-05-21 Plaque integre dans une buse superieure et leur procede de separation

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Country Link
US (1) US20100019420A1 (fr)
EP (1) EP2022581B1 (fr)
JP (1) JP5129745B2 (fr)
CN (1) CN101448590A (fr)
AU (1) AU2007252534B2 (fr)
BR (1) BRPI0712712B1 (fr)
ES (1) ES2522292T3 (fr)
WO (1) WO2007136034A1 (fr)

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CN109570935B (zh) * 2019-01-03 2020-01-14 上海江南船舶管业有限公司 压力筒焊接工艺
JP7335170B2 (ja) * 2020-01-08 2023-08-29 黒崎播磨株式会社 スライディングノズル用のバブリングプレート

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JP4544723B2 (ja) * 2000-10-23 2010-09-15 三菱重工業株式会社 ガスタービン圧縮機の吸気冷却用水噴霧ノズル及びこれを備えたガスタービンプラント
KR100624830B1 (ko) * 2001-05-01 2006-09-18 구로사키 하리마 코포레이션 슬라이딩 노즐 장치
JP3614817B2 (ja) * 2001-12-28 2005-01-26 品川白煉瓦株式会社 スライドバルブの面圧負荷装置

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JP5129745B2 (ja) 2013-01-30
ES2522292T3 (es) 2014-11-14
CN101448590A (zh) 2009-06-03
AU2007252534B2 (en) 2011-04-21
EP2022581A4 (fr) 2010-01-27
BRPI0712712A2 (pt) 2012-05-29
JPWO2007136034A1 (ja) 2009-10-01
WO2007136034A1 (fr) 2007-11-29
US20100019420A1 (en) 2010-01-28
EP2022581A1 (fr) 2009-02-11
BRPI0712712B1 (pt) 2016-07-12
AU2007252534A1 (en) 2007-11-29

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