WO1989008811A1 - Procede de realisation par diffusion radiale d'un orifice de sortie de metal en fusion, installation et impulseur de diffusion radiale de l'orifice utilise par ladite installation - Google Patents

Procede de realisation par diffusion radiale d'un orifice de sortie de metal en fusion, installation et impulseur de diffusion radiale de l'orifice utilise par ladite installation Download PDF

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Publication number
WO1989008811A1
WO1989008811A1 PCT/JP1989/000247 JP8900247W WO8908811A1 WO 1989008811 A1 WO1989008811 A1 WO 1989008811A1 JP 8900247 W JP8900247 W JP 8900247W WO 8908811 A1 WO8908811 A1 WO 8908811A1
Authority
WO
WIPO (PCT)
Prior art keywords
impeller
molten metal
projection
metal outlet
repair
Prior art date
Application number
PCT/JP1989/000247
Other languages
English (en)
Japanese (ja)
Inventor
Masayuki Fujita
Sueki Kubo
Hiroyuki Ito
Original Assignee
Kurosaki Refractories Co., Ltd.
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 Kurosaki Refractories Co., Ltd. filed Critical Kurosaki Refractories Co., Ltd.
Priority to EP89903237A priority Critical patent/EP0357795B1/fr
Priority to DE1989903237 priority patent/DE357795T1/de
Priority to DE68916344T priority patent/DE68916344T2/de
Publication of WO1989008811A1 publication Critical patent/WO1989008811A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/44—Refractory linings
    • C21C5/445—Lining or repairing the taphole
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
    • F27D1/1673—Repairing linings by projecting or spraying refractory materials on the lining applied centrifugally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1694—Breaking away the lining or removing parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools

Definitions

  • the present invention relates to a method and an apparatus for projecting a molten metal outlet such as a converter outlet hole, a vacuum degassing furnace, and the like, and a concave metal impeller for use in the apparatus, and the molten metal outlet by projection. It can be used for repair, construction, molding, etc.
  • the converter outlet which is an example of a molten metal outlet
  • a refractory material for example, is covered with a refractory material and the internal refractory is damaged or melted down by use, so it needs to be repaired.
  • Methods for performing this repair hot include a press-fit repair method, a spray repair method, and a projection repair method.
  • the press-in repair method is a method of filling a cylinder with a fluid repair material and extruding it with a viston, so that the inner cone-shaped erosion part (wrapper-shaped erosion) of the converter outlet hole is used.
  • the repair material adhered to the portion the construction of the repaired portion with a dense and good structure could not be obtained.
  • the above-mentioned spray repair method is a method in which the repair material is conveyed with compressed air and the repair material is sprayed from the spray outlet of the spray lance to the part to be repaired. If a sufficient distance cannot be secured to the inner wall of the silk hole, the adhesion rate of the repair material is poor due to the effect of compressed air for transporting the repair material, There was a problem that the organization was bad.
  • the spray discharge port 11 is attached to the spray lance 12 for the cone erosion portion 10 inside the converter outlet hole as shown in FIG.
  • the repair material will be clogged in the bent parts of the spray lance 12 and the spray outlet 11 and spraying will not be possible. There was a problem.
  • the above-mentioned projection repair method uses the repair equipment for degassing equipment for molten metal described in Japanese Utility Model Registration No. 14432690 (described in Japanese Utility Model Publication No. 56-325151).
  • Means for repairing the converter outlet are conceivable, but as shown in FIG. 12, the repair device 17 described in the above-mentioned publication is equipped with a rotary pipe at the lower center of the impeller 18 that is driven by rotation.
  • a vertical pipe 19 connected to the rotating pipe 19a and the rotating pipe 19a is provided, a refractory material is supplied from the vertical pipe 19, and the refractory material is jetted from the west of the impeller 18.
  • the gas device repair device 17 has a problem in that the material may be clogged at the joint between the rotating pipe 19a and the impeller 18 and the function may not be achieved.
  • the present invention has been made in view of such circumstances, and has been made to increase the adhesive force by increasing the material projection speed, and in some cases, it is possible to efficiently repair a molten metal outlet that is unevenly or locally melted.
  • Projectile materials including refractory materials and other repair materials
  • a method and apparatus for projecting a molten metal outlet having high adhesion to (a concave part of a molten metal outlet) and capable of projecting a fine structure, and an impeller for projecting a concave part used in the apparatus is to:
  • a method for projecting and projecting a molten metal outlet comprises the steps of: ⁇ disposing an impeller connected to a rotary power source in the molten metal outlet so as to be able to advance and retreat, and using air or a pump in front of the impeller.
  • the impeller is provided with a material supply pipe for supplying a projection material, and the projection material discharged from the material supply pipe is changed in course by the impeller and projected to a concave portion of the molten metal outlet.
  • the method of the present invention it is possible to project the projected material discharged from the material supply pipe near the circumferential direction by the impeller, and to perform high-speed projection of the material by increasing the rotation of the impeller.
  • a dense construction body can be formed, and projection can be performed.
  • the air can pass through the gaps between the impeller blades, so that the projection material and the transport air can be separated.
  • a molten metal outflow and projection apparatus comprises: an impeller connected to a rotating shaft; and a projection material arranged and conveyed in front of the impeller. It comprises a stationary material supply pipe having a ring-shaped discharge port for discharging, and a reciprocating device for reciprocating with respect to a molten metal outflow port where these are to be constructed.
  • the molten metal outlet projection construction apparatus includes: an impeller connected to a rotating shaft; and a projection material having an outlet disposed in front of the impeller and conveyed. It comprises a material supply pipe composed of two or more pipes arranged around the rotating shaft for discharging, and a reciprocating device for reciprocating with respect to a molten metal outlet for constructing these pipes.
  • a recess may be formed on the front side of the impeller, and the tip of each material supply pipe may be fitted into the recess. It is possible to ensure that the impeller can project the material from the radial direction to the circumferential direction even when the emission speed of the projection material is low. Further, in the molten metal outlet projection apparatus according to the first or second invention, it is possible to provide a cutter at the tip of the impeller so that the cutter rotates simultaneously with the impeller. As a result, the protrusions and the like made of slag and the like adhered inside can be scraped off and the molten metal outlet can be formed into a cylindrical shape.
  • Each impeller blade of the impeller used in the molten metal outlet projection apparatus according to the first or second invention is attached with a constant twist angle with respect to the rotation axis, and is fed from the material supply pipe. It is also possible to configure so that the projected material is projected in the rearward oblique direction. As a result, the projection material can be supplied to the cone-shaped erosion portion inside the molten metal outlet, that is, the concave portion of the molten metal outlet near a right angle, and a high-quality construction body can be obtained.
  • FIG. 1 is a side view showing an embodiment of a molten metal outlet projecting apparatus according to a first embodiment of the present invention
  • FIG. 2 is a schematic sectional view showing a main configuration of the molten metal outlet repair apparatus
  • FIG. 3 is a schematic side view of a molten metal outlet repairing apparatus according to a second embodiment of the present invention
  • FIG. 4 is a schematic enlarged cross-sectional view taken along a line A-A in FIG. 3
  • FIG. 6 is a partially omitted cross-sectional view of a main part of the molten metal outlet repair device according to the third embodiment
  • FIG. 6 is a cross-sectional view taken along the line BB in FIG. 5, and FIG. FIG.
  • FIG. 8 is a schematic side view of a molten metal outlet projection construction apparatus according to an embodiment
  • FIG. 8 is a front view of a cutter used in the fourth embodiment
  • FIG. 9 is a side view thereof
  • FIG. FIG. 11 is a perspective view of an impeller according to another embodiment used for a metal outlet projection device
  • FIG. 11 is a schematic side view showing a molten metal outlet repair method according to a conventional example
  • FIG. 12 is a sectional view of a repair device using a conventional impeller.
  • the molten metal outlet repairing device 21 is disposed at the front of a converter steel outlet hole, which is an example of the molten metal outlet, not shown.
  • the retreating device 22 supported by the support member 2 2 A traveling platform 2 2a that forms a frame, a traveling platform 2 3 having a driving source inside and moving the traveling platform 2 2 .a in the lateral direction, and a support forest under the traveling platform 2 3 A rotating shaft 24 that is freely rotatable through the shaft, an impeller 25 that is mounted at the tip of the rotating shaft 24, and a material supply tube 26 that is formed around the rotating shaft 24. It is configured.
  • these will be described in detail.
  • the reciprocating device 22 has a well-known structure as shown in FIG. 1, and is supported by a supporting member (not shown) by an electric motor, a hydraulic or pneumatic cylinder, or the like.
  • the traveling carriage 23 moves back and forth in parallel with the converter outlet hole 27 along the axis.
  • the traveling carriage 23 has a structure in which it only moves forward and backward, but it is also possible to add a lateral movement function or a turning function of a known structure to the converter if necessary.
  • a rotating shaft 24 is disposed at a lower portion of the traveling coach 23 via a support member, and an impeller 25 is attached to a tip of the rotating shaft 24.
  • the device is adapted to move back and forth in the converter tapping hole 27.
  • the impeller 25 is made of metal or ceramic blades, and a rotary shaft 24 is fixed to the center of the impeller 25 as shown in FIG. 2, and a rear end of the rotary shaft 24 is provided. Is connected to a rotation motor 32 as a rotation drive source via a coupling 31 so as to rotate the impeller 25 at high speed.
  • the rotary shaft 24 is provided with bearings 28, 29.30 on the way, and the bearings 28, 29, 30 are fixed in a support pipe 26a.
  • a pipe 26 b is provided, and a ring-shaped material supply pipe 26 formed concentrically with the rotation shaft 24 by the outer tube 26 b and the support pipe 26 a is configured.
  • the repair material which is an example of the projection material, is discharged from the ring-shaped discharge portion 26c at the tip of the impeller 25.
  • the starting end of the material supply pipe 26 is connected to a material supply hose 34 connected to a material tank 33 as shown in FIG. 1, and a repair material transported by compressed air generated by a compressor (not shown) is connected to the material supply hose 34.
  • the material is supplied from a ring-shaped discharge portion 26c at the tip of the material supply pipe 26.
  • a water addition device 35 having a water spout formed obliquely in the material advancing direction is arranged around the material supply hose 34, and appropriate water is added to the repair material. Can now be used.
  • the water addition device 35 may be configured to be attached to the end of the outer tube 26 b.
  • reference numeral 36 denotes a reciprocating cooling water hose (not shown in FIG. 2) for circulating cooling water for cooling the material supply pipe 26, and 37 denotes a water addition device 35.
  • the hose that supplies water to the tube, and 38 indicates the inner cone-shaped erosion to be repaired.
  • the molten metal outlet repairing device 21 Since the molten metal outlet repairing device 21 according to the first embodiment is configured as described above, before use, the state of melting of the steel outlet hole 27 in the converter is checked in advance. After circulating the cooling water necessary for the device 21, while the rotary motor 32 is being driven, the traveling carriage 23 is controlled to drive the impeller 25 and the material supply pipe 26 together with the converter outlet hole. 2 Insert into 7. Next, the repair material in the material tank 33 is supplied by compressed air from the material supply hose 34 by driving a not-shown compressor or the like. The material is transported into the pipe 26 and discharged toward the impeller 25 from the ring-shaped discharge port 26 c at the tip of the material supply pipe 26.
  • the repair material for example, a magnesium-based or dolomite-based basic material is used, and it is assumed that an appropriate amount of water is mixed in by a water adding device 35 on the way.
  • the repair material supplied to the impeller 25 is projected outward by the impeller because the impeller 15 is rotating at a high speed, thereby repairing the converter outlet hole 27 as shown in FIG. Also, the projection speed is high and the projection is almost perpendicular to the repaired surface, and it is possible to obtain a denser construction body under favorable conditions than before.
  • a dry repair material is used.
  • a wet material supplied by a pump or the like for example, the above magnesia And dolomite-based basic materials to which water, etc. are added.
  • the impeller is made up of plate-like blades and is open at the tip.Most of the compressed air for transport flows in the axial direction, and only the repair material is projected by the blades, improving the adhesion rate of the repair material. As a result, clogging of the material at the root of the blade as in the conventional example described above is eliminated.
  • the outer tube 26 b constituting the material supply tube 26 is disposed eccentrically with respect to the support pipe 26 a supporting the impeller shaft 24, so that it can be rotated appropriately.
  • the projection material is eccentrically discharged from the ring-shaped discharge portion 26 c by changing the heat flow to the molten metal outlet 27, and the projection from the impeller 25 is deflected in one direction only. In this way, it is possible to adjust the thickness of the layer in the circumferential direction, and it is also possible to repair a local concave portion. You.
  • the material supply pipe is rotatable with respect to the traveling vehicle, and the projection position is controlled.However, since the material supply pipe does not rotate simultaneously with the impeller, the material supply pipe is in a stationary state based on the impeller. Become.
  • the molten metal outlet repair device 39 according to the second embodiment shown in FIGS. 3 and 4 will be described.
  • the same components as those of the molten metal outlet repair device 21 are the same. A number is attached and the explanation is omitted.
  • a material supply pipe 40a to 40h composed of two or more pipes (8 in this embodiment). Are arranged around the rotating shaft 24, and the respective material supply pipes 40a to 40h are connected to the centralized material supply pipe 42 via valves 41a to 41h, respectively. ing. It is assumed that the centralized material supply pipe 42 is connected to the material tank as described above, and a repair material, which is an example of a predetermined blast material, is pneumatically transported.
  • valves 41a to 41h are controlled to control the material supply pipe 40. If the repair material is discharged only from the material supply pipe b and the material supply pipe 40c, only the material that collides with the impeller 25 from the material supply port at the tip becomes only one part. The material is projected in a concentrated manner on the right side shaded area). As a result, the converter tap hole 27 can be partially repaired.
  • the repair material is appropriately added with water in advance and pneumatically transported by compressed air generated from a compressor, as in the first embodiment (not shown).
  • a water adding device for adding an appropriate amount of water to the repair material as described above in the middle of or before 0 h.
  • a support pipe 44 that is sufficiently longer than the length of the converter outlet hole described above.
  • a rotating shaft 48 is disposed rotatably via bearings 45, 46, and 47, and an impeller 9 is fixed to a tip of the rotating shaft 48.
  • a material made of four stainless steel tubes ⁇ H co-supply tubes 50a to 50d are held at both ends by ends 51 and 52.
  • Cooling water supply pipes 53a to 53d are arranged in an intermediate portion adjacent to the material supply pipes 50a to 50d.
  • An outer tube 54 is disposed outside the material supply tubes 50a to 50d, the front end of which holds the end plate 51, and the rear end of which holds the end plate 52. It is fixed to the support bracket 55.
  • the support bracket 55 is provided with a water supply port 56 and a water discharge port 57, and the water outlet is connected to the four cooling water supply pipes 53a to 53d.
  • 7 is connected to the inside of the outer tube 54 and supports the water sent to the front of the material supply tubes 50a to 50d by the supply tubes 53a to 53d and the pipe 44. The water is discharged to the outside from the water discharge port 57 through the gap with the outer cylinder No. 54.
  • FIG. 5 shows a state in which cooling water is not flowing
  • FIG. 6 shows a state in which cooling water is flowing.
  • the starting end of each of the material supply pipes 50a to 50d is compressed air.
  • An air supply port 59 for supplying compressed air and a water supply port 60 for supplying water required for the repair material are provided.
  • a valve is provided in each of the material supply hoses so that the supply of the repair material to the material supply pipes 50a to 50d can be independently stopped.
  • One end of the rotary shaft 48 is provided with a power coupling 60a for connecting to an output shaft of a rotary drive source (not shown) (for example, an electric motor, a hydraulic motor, or an air motor).
  • a rotary drive source for example, an electric motor, a hydraulic motor, or an air motor.
  • the impeller 49 fixed to the other end side has a concave portion 61 formed on the near side.
  • the tip of the above-described material supply pipe 50a to 50d is fitted into the recess 61, and the released repair material always hits the impeller 49 and is projected around the circumference from the radial direction to the circumferential direction. It has become so.
  • the support bracket 55 is attached to a traveling vehicle 23 constituting the above-mentioned reciprocating device 22, and the device reciprocates inside the converter outlet hole 27 by the movement of the traveling vehicle 23. It has become.
  • an appropriate amount of water is added to the repair material from the water supply port 60 and humidified. If necessary, compressed air is supplied from the air supply port 59 to supply the repair material. Can be further accelerated to supply the impeller 49 blades.
  • the repair material discharged from each of the material supply pipes 50a to 50d is fitted into the recess 61 of the impeller 49 because the tip of the material supply pipe 50a to 50d fits into the recess 61 of the impeller 49. Even if the released repair material does not have a sufficient speed, if it is released, it will always be projected to the surroundings by the impeller 49, and the repair work can be performed efficiently.
  • the support pipe 26a is Even in the case of the material supply tube 26 formed by the outer tube 26 b, it is possible to fit the tip of the material supply tube 26 into the upper concave portion 61, whereby the repair material supplied is provided. It has the characteristic that projection can be performed sufficiently with an impeller even when the emission speed is low.
  • a force cutter 64 as shown in FIGS. 8 and 9 is provided at the front end of the impeller 63 so as to be freely attached and detached. Therefore, the cutter 64 rotates with the rotation of the impeller 63, whereby the protrusions 65, 66 in the converter outlet hole 27 can be removed before the repair, and further, an example of the projection material Even if the repair material is excessively projected in one direction, the cutter 64 can scrape the repair material.
  • each impeller blade 67 is moved with respect to a rotation axis (not shown).
  • the impeller 68 is twisted by an angle and mounted at an angle r in the direction of the radius of rotation.
  • the impeller blades 6 7 are twisted with respect to the rotating shaft for mounting.
  • the repair material which is an example of the projectile material blown from the material supply pipe 69 toward the impeller 68, can be projected obliquely rearward as shown by the arrow P, and its blades are rotated in the radial direction of rotation.
  • the impeller 68 is disposed slightly forward of the eroded portion and the repair material is projected onto the eroded portion.
  • the material is projected obliquely rearward, which enables extremely efficient projection.
  • repair of the inside of the converter outlet was described as an example, but the concave part of the vacuum degassing furnace reflux tank, the furnace of the converter and electric furnace (insertion port), etc. There are many applicable places such as kiln parts. Furthermore, it can be used not only for repairs, but also for construction and molding of details using irregular shapes such as converters.
  • the projecting material supplied to the impeller through the material supply pipe collides with the impeller blades rotating at a high speed and is projected in the circumferential direction.
  • the projection material can be more effectively projected onto the recess of the molten metal outlet while the air or the like is passed in the direction of the rotation axis.
  • the apparatus for performing the above-mentioned method can be provided by the molten metal outlet repairing apparatus according to the first and second inventions, and high-speed projection of the blasting material onto the inner wall of the molten metal outlet can be performed.
  • the inner wall can be constructed with a high bulk density (low porosity).
  • the projected material to be projected can be collected in only one direction and projected.
  • the thickness of the layer in the circumferential direction can be adjusted, and the molten metal outlet can be repaired efficiently, which also contributes to a reduction in the unit cost of repair materials. Since the molten metal outlet can be repaired to be a perfect circle, the area where the molten metal flow comes into contact with air is reduced, which has a positive effect on quality.
  • a concave portion is provided on the front side of the impeller, and the tip of the material supply pipe is fitted into the concave portion, so that the material discharge speed can be reduced. Even if it is late, the projection by the impeller is possible.
  • molten metal outlet projecting apparatus when a cutter is attached to the impeller, it is also possible to remove projections in the molten metal outlet or excessively projected material. It is possible to form or repair the molten metal outlet that is close to a perfect circle.
  • the projected material can be projected obliquely in the rearward direction, thereby projecting the molten metal outlet into the inner cone-shaped eroded portion. Can be performed more efficiently If the impeller impeller repair of the present invention is applied to a converter outlet, it is possible to repair the molten metal outlet during blowing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Procédé de réalisation et de façonnage d'un orifice de coulée d'acier provenant d'un convertisseur, comprenant un matériau réfractaire et un orifice d'écoulement de métal en fusion d'un four de dégazage sous vide, etc., procédé de réparation en cas de rupture desdits orifices, installation permettant d'appliquer ce procédé et impulseur utilisé par l'installation. Un matériau transféré via une conduite d'alimentation en matériau depuis le côté en aval d'un impulseur entraîné en rotation est déchargé et heurte l'impulseur qui tourne à grande vitesse, de sorte que le matériau peut être diffusé radialement dans le sens de la circonférence afin de former une couche réfractaire compacte ou une couche de réparation. En outre, il est possible d'effectuer une réparation partielle en alimentant de manière excentrique le matériau destiné à être diffusé à partir de la conduite, et on peut effectuer le façonnage de l'orifice de sortie de métal en fusion en adaptant un élément tranchant sur l'impulseur.
PCT/JP1989/000247 1988-03-17 1989-03-08 Procede de realisation par diffusion radiale d'un orifice de sortie de metal en fusion, installation et impulseur de diffusion radiale de l'orifice utilise par ladite installation WO1989008811A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP89903237A EP0357795B1 (fr) 1988-03-17 1989-03-08 Procede de realisation par diffusion radiale d'un orifice de sortie de metal en fusion, installation et impulseur de diffusion radiale de l'orifice utilise par ladite installation
DE1989903237 DE357795T1 (de) 1988-03-17 1989-03-08 Herstellung von metallabstichoeffnungen nach dem schleuderverfahren.
DE68916344T DE68916344T2 (de) 1988-03-17 1989-03-08 Herstellung von metallabstichöffnungen nach dem schleuderverfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63065235A JP2683807B2 (ja) 1988-03-17 1988-03-17 溶融金属流出口投射施工方法及びその装置
JP63/65235 1988-03-17

Publications (1)

Publication Number Publication Date
WO1989008811A1 true WO1989008811A1 (fr) 1989-09-21

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PCT/JP1989/000247 WO1989008811A1 (fr) 1988-03-17 1989-03-08 Procede de realisation par diffusion radiale d'un orifice de sortie de metal en fusion, installation et impulseur de diffusion radiale de l'orifice utilise par ladite installation

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EP (1) EP0357795B1 (fr)
JP (1) JP2683807B2 (fr)
DE (1) DE68916344T2 (fr)
WO (1) WO1989008811A1 (fr)

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FR2691164B1 (fr) * 1992-05-18 1994-10-21 Lorraine Laminage Outil de forage du trou de coulée d'un récipient métallurgique tel qu'un convertisseur.
EP0649911A1 (fr) * 1993-10-20 1995-04-26 Lafarge Refractaires Monolithiques S.A. Dispositif pour orienter une composition minérale à base de liant en sortie d'une lance d'injection et procédé utilisant cette lance
KR100805069B1 (ko) * 2001-08-13 2008-02-20 주식회사 포스코 출강구보호용 자동노즐분사장치
CH710773B1 (de) * 2015-02-20 2019-04-30 Refractory Intellectual Property Gmbh & Co Kg Verfahren und Vorrichtung zur Reparatur einer feuerfesten Hülse eines metallurgischen Gefässes.

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JPS5226483Y2 (fr) * 1973-09-11 1977-06-16
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AT361526B (de) * 1978-05-10 1981-03-10 Veitscher Magnesitwerke Ag Vorrichtung zum aufbauen und ausbessern der feuerfesten auskleidung von industriellen oefen durch aufschleudern von gekoerntem feuerfestem material
JPS556997U (fr) * 1978-06-29 1980-01-17
JPS57207102A (en) * 1981-06-16 1982-12-18 Nippon Atomaizu Kako Kk Producing device for metallic powder
JPS61221312A (ja) * 1985-03-27 1986-10-01 Kawasaki Steel Corp 衝撃霧化による金属粉末の製造方法およびその装置

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JPS4883006A (fr) * 1972-02-10 1973-11-06
JPS5569697U (fr) * 1978-11-08 1980-05-13
JPS55127758U (fr) * 1979-03-06 1980-09-09

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Title
See also references of EP0357795A4 *

Also Published As

Publication number Publication date
EP0357795A1 (fr) 1990-03-14
JP2683807B2 (ja) 1997-12-03
EP0357795B1 (fr) 1994-06-22
DE68916344D1 (de) 1994-07-28
JPH01240612A (ja) 1989-09-26
EP0357795A4 (fr) 1990-06-26
DE68916344T2 (de) 1995-02-23

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