EP0040112A1 - Steel-making converters - Google Patents

Steel-making converters Download PDF

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Publication number
EP0040112A1
EP0040112A1 EP81400570A EP81400570A EP0040112A1 EP 0040112 A1 EP0040112 A1 EP 0040112A1 EP 81400570 A EP81400570 A EP 81400570A EP 81400570 A EP81400570 A EP 81400570A EP 0040112 A1 EP0040112 A1 EP 0040112A1
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EP
European Patent Office
Prior art keywords
belt
retort
parts
chairs
plane
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.)
Granted
Application number
EP81400570A
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German (de)
French (fr)
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EP0040112B1 (en
EP0040112B2 (en
Inventor
Edouard Menu
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Fives Cail Babcock SA
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Fives Cail Babcock SA
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Application filed by Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to AT81400570T priority Critical patent/ATE3650T1/en
Publication of EP0040112A1 publication Critical patent/EP0040112A1/en
Publication of EP0040112B1 publication Critical patent/EP0040112B1/en
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    • 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
    • C21C5/4633—Supporting means

Definitions

  • the present invention relates to steelworks converters constituted by a retort carried by a belt which surrounds it with a radial clearance and is provided with two diametrically opposed pins and making it possible to tilt the retort around a horizontal axis.
  • connection between the retort and the belt must be designed to support and maintain the retort in all positions and allow its free expansion relative to the belt.
  • the retort is provided with chairs or consoles which rest on the upper face of the belt when the retort is vertical and its beak at the top, and various means are provided to take up the forces which appear when the retort is tilted.
  • a first solution consists in providing a second series of chairs fixed to the retort, under the belt, and coming to bear on the underside of the latter when the retort is tilted. With this construction, it appears hot, as a result of the different expansions of the retort and of the belt, a play between the chairs and the belt which is the cause of significant shocks during the tilting.
  • a third solution consists in holding the chairs on the belt by means of shoulder pieces or clamps fixed on the belt and which support the retort when the latter is placed vertically with the beak at the bottom. These clamps are arranged at the ends of the chairs which are therefore subject to high bending stresses. In addition, the bearing surface of the chairs on the frames is relatively small and the matting is important.
  • the purpose of the present invention is to provide a connection between retort and belt fulfilling the conditions imposed, namely: allow free expansion of the retort and maintain it in all positions, and allowing to reduce the stresses in the chairs and possibly reduce the number of chairs.
  • the converter object of the invention is characterized in that the chairs integral with the retort and resting on the upper face of the belt when the retort is vertical with the beak at the top are linked to the belt by mushroom-shaped parts, the hat is located above said sole and the foot of which passes through the sole of the chair rests on the upper face of the belt and is made integral with the latter by fixing rods which pass through the belt parallel to its axis and exert on said parts predetermined clamping forces allowing them to be prestressed and to keep them assembled without play with the belt whatever the conditions of use, the openings provided in the sole for the passage of the foot of said parts having dimensions greater than those of said foot and less than those of the cap of these parts and a clearance being provided for mounting between the hat of said parts and the sole of the chairs so that the chairs can slide on the belt in all directions and in all circumstances.
  • the mushroom-shaped parts can be pierced with an axial bore for the passage of the fixing rods, these rods being threaded at at least one of their two ends and being provided with nuts making it possible to assemble the said parts and the belt. with a predetermined clamping force and exert on these parts a compression force to put them in prestress.
  • the forces parallel to the axis of the retort are transmitted to the belt only by two chairs which are situated above the trunnions, each chair resting on the belt, when the retort is vertical with the beak above, in two support zones located symmetrically with respect to the plane containing the axes of the retort and the trunnions, and the connection between each chair and the belt is ensured by two mushroom-shaped parts each fixed on one of said zones belt support.
  • Figure 1 is an elevational view of a converter produced according to the invention
  • Figure 2 is a cross section along 2-2 of the converter of Figure 1
  • Figure 3 is a cross section along 3-3 of the converter of Figure 1
  • Figure 4 is a view along arrow A and on a larger scale of a portion of the converter, some elements being shown in section
  • Figure 5 shows a detail of the attachment of the chairs on the belt
  • Figure 6 is a view along arrow B and on a larger scale of a portion of the converter
  • Figure 7 is a partial view, in section, of the converter of Figure 1, the section plane containing the axes of the retort and pins
  • Figure 8 shows a detail of the attachment of the chairs on the belt according to a variant
  • Figure 9 is a view along 9-9 of the detail of Figure 8
  • Figures 10 to 13 show in section and in plan different embodiments of the fasteners of the chairs on the belt.
  • the converter shown in the drawings comprises a retort 10 and a belt 12 provided with two pins 14 intended to be mounted on fixed bearings.
  • Each chair 16 comprises a lower sole 18 ′ and an upper sole 20 welded to the wall of the retort and stiffening ribs connecting the two soles.
  • On the underside of the sole 18 are fixed two sliding plates 22 arranged symmetrically with respect to the plane containing the axes of the journals and the retort and the trace of which in FIG. 4 is represented by the axis x-x.
  • the plates 22 rest on sliding plates 24 fixed on the upper face of the belt.
  • the plates 22 and / or 24 are made of a metal having a low coefficient of friction or have undergone a surface treatment to reduce the friction forces and allow the free expansion of the retort.
  • each chair 16 is linked to the belt by two pieces 26 fixed to the belt, on the plates 24, by means of threaded rods 28 parallel to the axis of the retort .
  • the parts 26 are of revolution and have the shape of mushrooms; they include a foot 29 whose diameter decreases from bottom to top and a cap 30 whose diameter is significantly greater than the maximum diameter of the foot.
  • the foot is connected to the cap by a surface whose radius of curvature is relatively large to avoid a concentration of stresses in the connection area; this is located above the plane of the underside of the hat.
  • the cap of the parts 26 could be square ( Figures 9 to 13) and their base could have a cylindrical shape ( Figures 8, 9 and 11 to 13).
  • These parts can be in one piece ( Figures 5 and 10) or in two parts; in the latter case, the two parts can be assembled by welding or by embedding the end of the foot in a groove (FIG. 12) or in a circular housing. re (figure 13) of the hat.
  • the parts 26 can be mounted adjusted ( Figure 5) or with play (Figure 8) on the rods 28.
  • the foot of the parts 26 can be embedded in the plates 24 ( Figure 8).
  • the parts 26 are pierced with an axial bore for the passage of the rods 28. These pass right through the parts 26 and the belt, and nuts 32 screwed on their ends make it possible to exert on the parts 26 and the plates 24 a sufficient compression force to put them in prestressing so that no play appears between the parts and the plates or between them and the belt whatever the conditions of use, in particular when the retort is overturned with the beak down.
  • the foot of the parts 26 crosses the bottom sole of the chairs 16 and their hat is located above said sole.
  • the openings 34 provided in the sole for the passage of the foot of the parts 26 are oblong and have dimensions clearly greater than the diameter of the foot so as to allow the retort to expand or deform freely relative to the belt. These openings could lead to the outer edge of the sole of the chairs to form notches.
  • a set j is formed cold between the cap of the parts 26 and the lower sole of the chairs; this game is chosen to be practically completely absorbed when hot, without the sole 18 being able to be clamped between the cap of the parts 26 and the sliding plates 24 and its movements relative to the belt being able to be hindered. This clearance is obtained during assembly by the use of plates 24 of suitable thickness.
  • a spur 36 is welded to the lower sole of the chairs 16, and is engaged in a notch 38 of the belt.
  • the median plane of the spurs and notches coincides with the plane xx containing the axes of the retort and the trunnions and their cooperating faces are parallel to this. plan ; a clearance is provided between these faces so that, when hot, the spur can slide freely in the notch.
  • a much greater clearance is provided between the bottom of the notches and the opposite face of the spurs so that the spurs can never bear on the bottom of the notches and that no force parallel to the axis of the retort is transmitted. to the belt by the spur it can transmit to the belt only forces perpendicular to the plane xx.
  • the two spurs 36 transmit to the belt part of the forces perpendicular to the plane x-x acting on the retort.
  • the other part is transmitted by two other spurs 40 diametrically opposed to the spurs 36 relative to the axis of the trunnions and cooperating with notches 42 of the belt, in the same way as the spurs 36 with the notches 38.
  • the spurs 40 are welded to chairs 44 fixed to the wall of the retort by means of bolts so that it is possible to dismantle them when it is desired to separate the retort from the belt.
  • the chairs 16 and 44 are placed on either side of the belt.
  • the spurs 40 cannot bear on the bottom of the notches and can transmit to the belt only forces perpendicular to the plane x-x.
  • the chairs 44 can be in contact with the belt, but when hot, there appears a play of several millimeters due to the expansion of the retort, which is greater than that of the belt.
  • Two other chairs 46 provided with spurs 48 are fixed to the retort at two diametrically opposite points, the median plane of the spurs being the diametrical plane perpendicular to the plane xx containing the axes of the retort and the journals. These chairs are located above the belt, when the retort is vertical, beak up, and the spurs are engaged in notches 50 formed on the upper face of the belt.
  • the spurs 36, 40 and 48 and the notches with which they cooperate make it possible to keep the axes of the belt and the retort in coincidence.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Stackable Containers (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

1. Converter consisting of a vessel (10) supported by a ring (12) which surrounds it and is fitted with two diametrically opposed trunnions (14) allowing the vessel to tilt on a horizontal axis, the vessel being fitted with brackets (16) resting on the upper side of the ring when the vessel is vertical and its spout at the top, characterized by the fact that the said brackets (16) are attached to the ring by mushroom-shaped parts (26) whose cap (30) is situated above the base plate (18) of the brackets (16) and whose foot (29), which passes through the said base plate, rests on the upper side of the ring (12) and is made an integral part of the latter by means of attachment rods (28) which pass through the ring (12) on a parallel with its axis and exert predetermined clamping stresses on the said parts (26) allowing them to be prestressed and joined together with the ring, without clearance, and by the fact that the passages (34) provided in the base plates of the brackets for the foot of the said parts have greater dimensions than those of the said feet to allow the differential expansion of the vessel (10) and ring (12) and by the fact that during installation a clearance (j) is left between the cap (29) of the said parts and the base plate (18) of the brackets so that the latter can slide freely over the ring under any circumstances.

Description

La présente invention concerne les convertisseurs d'aciérie constitués par une cornue portée par une ceinture qui l'entoure avec un jeu radial et est munie de deux tourillons diamétralement opposés et permettant de faire basculer la cornue autour d'un axe horizontal.The present invention relates to steelworks converters constituted by a retort carried by a belt which surrounds it with a radial clearance and is provided with two diametrically opposed pins and making it possible to tilt the retort around a horizontal axis.

La liaison entre la cornue et la ceinture doit être conçue pour supporter et maintenir la cornuè en toutes positions et permettre sa libre dilatation par rapport à la ceinture.The connection between the retort and the belt must be designed to support and maintain the retort in all positions and allow its free expansion relative to the belt.

Généralement, la cornue est munie de chaises ou consoles qui reposent sur la face supérieure de la ceinture quand la cornue est verticale et son bec en haut, et différents moyens sont prévus pour reprendre les efforts qui apparaissent lorsqu'on fait basculer la cornue. Une première solution consiste à prévoir une seconde série de chaises fixées à la cornue, sous la ceinture, et venant s'appuyer sur la face inférieure de celle-ci lorsque la cornue est basculée. Avec cette construction, il apparaît à chaud, par suite des dilatations différentes dela cornue et de la ceinture, un jeu entre les chaises et la ceinture qui est la cause de chocs importants au cours du basculement. On a cherché à améliorer cette solution en inclinant les surfaces de contact chaise-ceinture de telle sorte qu'elles restent en contact lorsque la cornue et la ceinture se dilatent. Mais en pratique cette solution ne s'est pas révélée satisfaisante et on a constaté qu'il y avait grippage des surfaces de glissement empêchant la dilatation de la cornue et engendrant des déformations de cette dernière.Generally, the retort is provided with chairs or consoles which rest on the upper face of the belt when the retort is vertical and its beak at the top, and various means are provided to take up the forces which appear when the retort is tilted. A first solution consists in providing a second series of chairs fixed to the retort, under the belt, and coming to bear on the underside of the latter when the retort is tilted. With this construction, it appears hot, as a result of the different expansions of the retort and of the belt, a play between the chairs and the belt which is the cause of significant shocks during the tilting. We sought to improve this solution by tilting the chair-belt contact surfaces so that they remain in contact when the retort and the belt expand. But in practice this solution has not proved satisfactory and it has been found that there was jamming of the sliding surfaces preventing the expansion of the retort and causing deformations of the latter.

Une autre solution consiste à fixer les chaises supérieures sur la ceinture au moyen de boulons. Cette solution ne donne pas non plus satisfaction car il est impossible de- régler le serrage des boulons de telle sorte qu'en toutes circonstances il permette le glissement des chaises sur la ceinture et évite l'apparition d'un jeu générateur de chocs ;Another solution is to fix the upper chairs on the belt with bolts. This solution is not satisfactory either because it is impossible to adjust the tightening of the bolts so that in all circumstances it allows the sliding of the chairs on the belt and avoids the appearance of a game generating shocks;

si les boulons sont trop serrés la cornue ne pourra pas se dilater librement et s'ils ne sont pas assez serrés, un jeu risque d'apparaître entre les chaises et la cornue dans certaines conditions d'utilisation, entraînant rapidement la détérioration et la rupture des boulons.if the bolts are too tight the retort will not be able to expand freely and if they are not tight enough, a clearance may appear between the chairs and the retort under certain conditions of use, quickly leading to deterioration and rupture bolts.

Une troisième solution consiste à maintenir les chaises sur la ceinture au moyen de pièces épaulées ou clames fixées sur la ceinture et qui supportent la cornue lorsque celle-ci est placée verticalement avec le bec en bas. Ces clames sont disposées aux extrémités des chaises qui sont de ce fait soumises à des contraintes de flexion élevées. De plus, la surface d'appui des chaises sur les clames est relativement faible et le matage est important.A third solution consists in holding the chairs on the belt by means of shoulder pieces or clamps fixed on the belt and which support the retort when the latter is placed vertically with the beak at the bottom. These clamps are arranged at the ends of the chairs which are therefore subject to high bending stresses. In addition, the bearing surface of the chairs on the frames is relatively small and the matting is important.

Le but de la présente invention est de réaliser une liaison entre cornue et ceinture remplissant les conditions imposées, à savoir : permettre la libre dilatation de la cornue et maintenir celle-ci en toutes positions, et permettant de réduire les contraintes dans les chaises et éventuellement de diminuer le nombre de chaises.The purpose of the present invention is to provide a connection between retort and belt fulfilling the conditions imposed, namely: allow free expansion of the retort and maintain it in all positions, and allowing to reduce the stresses in the chairs and possibly reduce the number of chairs.

Le convertisseur objet de l'invention est caractérisé en ce que les chaises solidaires de la cornue et reposant sur la face supérieure de la ceinture lorsque la cornue est verticale avec le bec en haut sont liées à la ceinture par des pièces en forme de champignon dont le chapeau se trouve au-dessus de ladite semelle et dont le pied qui traverse la semelle de la chaise repose sur la face supérieure de la ceinture et est rendu solidaire de celle-ci par des tiges de fixation qui traversent la ceinture parallèlement à son axe et exercent sur les dites pièces des efforts de serrage prédéterminés permettant de les mettre en précontrainte et de les maintenir assemblées sans jeu avec la ceinture quelles que soient les conditions d'utilisation, les ouvertures prévues dans la semelle pour le passage du pied des dites pièces ayant des dimensions supérieures à celles du dit pied et inférieures à celles du chapeau de ces pièces et un jeu étant ménagé au montage entre le chapeau des dites pièces et la semelle des chaises de telle sorte que les chaises peuvent glisser sur la ceinture dans-toutes les directions et en toutes circonstances.The converter object of the invention is characterized in that the chairs integral with the retort and resting on the upper face of the belt when the retort is vertical with the beak at the top are linked to the belt by mushroom-shaped parts, the hat is located above said sole and the foot of which passes through the sole of the chair rests on the upper face of the belt and is made integral with the latter by fixing rods which pass through the belt parallel to its axis and exert on said parts predetermined clamping forces allowing them to be prestressed and to keep them assembled without play with the belt whatever the conditions of use, the openings provided in the sole for the passage of the foot of said parts having dimensions greater than those of said foot and less than those of the cap of these parts and a clearance being provided for mounting between the hat of said parts and the sole of the chairs so that the chairs can slide on the belt in all directions and in all circumstances.

Les pièces en forme de champignon peuvent être percées d'un alésage axial pour le passage des tiges de fixation, ces tiges étant filetées à au moins une de leurs deux extrémités et étant munies d'écrous permettant d'assembler les dites pièces et la ceinture avec un effort de serrage prédéterminé et d'exercer sur ces pièces un effort de compression pour les mettre en précontrainte.The mushroom-shaped parts can be pierced with an axial bore for the passage of the fixing rods, these rods being threaded at at least one of their two ends and being provided with nuts making it possible to assemble the said parts and the belt. with a predetermined clamping force and exert on these parts a compression force to put them in prestress.

Dans un mode de réalisation préféré, les forces parallèles à l'axe de la cornue sont transmises à la ceinture seulement par deux chaises qui sont situées au-dessus des tourillons, chaque chaise reposant sur la ceinture, quand la cornue est verticale avec le bec en haut, en deux zones d'appui situées symétriquement par rapport au plan contenant les axes de la cornue et des tourillons, et la liaison entre chaque chaise et la ceinture est assurée par deux pièces en forme de champignon fixées chacune sur une des dites zones d'appui de la ceinture.In a preferred embodiment, the forces parallel to the axis of the retort are transmitted to the belt only by two chairs which are situated above the trunnions, each chair resting on the belt, when the retort is vertical with the beak above, in two support zones located symmetrically with respect to the plane containing the axes of the retort and the trunnions, and the connection between each chair and the belt is ensured by two mushroom-shaped parts each fixed on one of said zones belt support.

Les forces perpendiculaires au plan contenant les axes de la cornue et des tourillons sont reprises par des éperons solidaires de la cornue et engagés dans des échancrures formées dans la ceinture, au-dessus et au-dessous des tourillons, les faces des éperons et des échancrures coopérant pour reprendre ces forces étant parallèles au dit plan, et ces éperons ne transmettant à la ceinture aucune force parallèle à l'axe de la cornue.The forces perpendicular to the plane containing the axes of the retort and the pins are taken up by spurs integral with the retort and engaged in notches formed in the belt, above and below the pins, the faces of the spurs and notches cooperating to resume these forces being parallel to said plane, and these spurs transmitting to the belt no force parallel to the axis of the retort.

Les forces parallèles aux faces de la ceinture et au plan contenant les axes de la cornue et des tourillons sont reprises par des éperons solidaires de la cornue et engagés dans des échancrures formées dans la ceinture à 90° des tourillons, les faces des éperons et des échancrures coopérant pour reprendre ces forces étant perpendiculaires au dit plan et ces éperons ne transmettant à la ceinture aucune force parallèle à l'axe de la cornue.The forces parallel to the faces of the belt and to the plane containing the axes of the retort and the pins are taken up by spurs secured to the retort and engaged in notches formed in the belt at 90 ° to the pins, the faces of the spurs and notches cooperated rant to resume these forces being perpendicular to said plane and these spurs transmitting to the belt no force parallel to the axis of the retort.

D'autres caractéristiques de l'invention apparaîtront à la lecture de la description qui suit et se réfère aux dessins l'accompagnant qui montrent, à titre d'exemple non limitatif, un mode de réalisation de l'invention et sur lesquels :Other characteristics of the invention will appear on reading the description which follows and refers to the accompanying drawings which show, by way of nonlimiting example, an embodiment of the invention and in which:

La figure 1 est une vue en élévation d'un convertisseur réalisé conformément à l'invention ; la figure 2 est une coupe transversale suivant 2-2 du convertisseur de la figure 1 ; la figure 3 est une coupe transversale suivant 3-3 du convertisseur de la figure 1 ; la figure 4 est une vue suivant la flèche A et à plus grande échelle d'une partie du convertisseur, certains éléments étant montrés en coupe ; la figure 5 montre un détail de la fixation des chaises sur la ceinture ; la figure 6 est une vue suivant la flèche B et à plus grande échelle d'une partie du convertisseur ; la figure 7 est une vue partielle, en coupe, du convertisseur de la figure 1, le plan de coupe contenant les axes de la cornue et des tourillons ; la figure 8 montre un détail de la fixation des chaises sur la ceinture suivant une variante ; la figure 9 est une vue suivant 9-9 du détail de la figure 8 ; et les figures 10 à 13 montrent en coupe et en plan différentes formes de réalisation des pièces de fixation des chaises sur la ceinture.Figure 1 is an elevational view of a converter produced according to the invention; Figure 2 is a cross section along 2-2 of the converter of Figure 1; Figure 3 is a cross section along 3-3 of the converter of Figure 1; Figure 4 is a view along arrow A and on a larger scale of a portion of the converter, some elements being shown in section; Figure 5 shows a detail of the attachment of the chairs on the belt; Figure 6 is a view along arrow B and on a larger scale of a portion of the converter; Figure 7 is a partial view, in section, of the converter of Figure 1, the section plane containing the axes of the retort and pins; Figure 8 shows a detail of the attachment of the chairs on the belt according to a variant; Figure 9 is a view along 9-9 of the detail of Figure 8; and Figures 10 to 13 show in section and in plan different embodiments of the fasteners of the chairs on the belt.

Le convertisseur représenté sur les dessins comporte une cornue 10 et une ceinture 12 munie de deux tourillons 14 destinés à être montés sur des paliers fixes.The converter shown in the drawings comprises a retort 10 and a belt 12 provided with two pins 14 intended to be mounted on fixed bearings.

Lorsque la cornue est en position verticale, bec en haut ou en bas, elle est supportée uniquement par deux chaises 16 solidaires de la cornue, placées au droit des tourillons et liées à la ceinture par des moyens qui vont être décrits.When the retort is in the vertical position, beak up or down, it is supported only by two chairs 16 secured to the retort, placed in line with the pins and linked to the belt by means which will be described.

Chaque chaise 16 comprend une semelle inférieure 18'et une semelle supérieure 20 soudées sur la paroi de la cornue et des nervures de raidissement reliant les deux semelles. Sur la face inférieure de la semelle 18 sont fixées deux plaques de glissement 22 disposées symétriquement par rapport au plan contenant les axes des tourillons et de la cornue et dont la trace sur la figure 4 est représentée par l'axe x-x. Lorsque la cornue est verticale avec le bec en haut, comme représenté sur la figure 1, les plaques 22 reposent sur des plaques de glissement 24 fixées sur la face supérieure de la ceinture. Les plaques 22 et/ou 24 sont réalisées en un métal ayant un faible coefficient de frottement ou ont subi un traitement de surface pour réduire les forces de frottement et permettre la libre dilatation de la cornue.Each chair 16 comprises a lower sole 18 ′ and an upper sole 20 welded to the wall of the retort and stiffening ribs connecting the two soles. On the underside of the sole 18 are fixed two sliding plates 22 arranged symmetrically with respect to the plane containing the axes of the journals and the retort and the trace of which in FIG. 4 is represented by the axis x-x. When the retort is vertical with the beak at the top, as shown in FIG. 1, the plates 22 rest on sliding plates 24 fixed on the upper face of the belt. The plates 22 and / or 24 are made of a metal having a low coefficient of friction or have undergone a surface treatment to reduce the friction forces and allow the free expansion of the retort.

Pour supporter la cornue lorsqu'elle est renversée, bec en bas, chaque chaise 16 est liée à la ceinture par deux pièces 26 fixées à la ceinture, sur les plaques 24, au moyen de tiges filetées 28 parallèles à l'axe de la cornue.To support the retort when it is overturned, beak down, each chair 16 is linked to the belt by two pieces 26 fixed to the belt, on the plates 24, by means of threaded rods 28 parallel to the axis of the retort .

Comme on le voit sur la figure 5, les pièces 26 sont de révolution et ont la forme de champignons ; elles comportent un pied 29 dont le diamètre décroît de bas en haut et un chapeau 30 dont le diamètre est nettement supérieur au diamètre maximal du pied. Le pied est raccordé au chapeau par une surface dont le rayon de courbure est relativement important pour éviter une concentration des contraintes dans la zone de raccordement ; celle-ci est située au-dessus du plan de la face inférieure du chapeau.As seen in Figure 5, the parts 26 are of revolution and have the shape of mushrooms; they include a foot 29 whose diameter decreases from bottom to top and a cap 30 whose diameter is significantly greater than the maximum diameter of the foot. The foot is connected to the cap by a surface whose radius of curvature is relatively large to avoid a concentration of stresses in the connection area; this is located above the plane of the underside of the hat.

En variante, le chapeau des pièces 26 pourrait être carré (figures 9 à 13) et leur pied pourrait avoir une forme cylindrique (figures 8, 9 et 11 à 13). Ces pièces peuvent être monobloc (figures 5 et 10) ou en deux parties ; dans ce dernier cas, les deux parties peuvent être assemblées par soudage ou par encastrement de l'extrémité du pied dans une rainure (figure 12) ou dans un logement circulaire (figure 13) du chapeau. Les pièces 26 peuvent être montées ajustées (figure 5) ou avec jeu (figure 8) sur les tiges 28. Le pied des pièces 26 peut être encastré dans les plaques 24 (figure 8).Alternatively, the cap of the parts 26 could be square (Figures 9 to 13) and their base could have a cylindrical shape (Figures 8, 9 and 11 to 13). These parts can be in one piece (Figures 5 and 10) or in two parts; in the latter case, the two parts can be assembled by welding or by embedding the end of the foot in a groove (FIG. 12) or in a circular housing. re (figure 13) of the hat. The parts 26 can be mounted adjusted (Figure 5) or with play (Figure 8) on the rods 28. The foot of the parts 26 can be embedded in the plates 24 (Figure 8).

Les pièces 26 sont percées d'un alésage axial pour le passage des tiges 28. Celles-ci traversent de part en part les pièces 26 et la ceinture, et des écrous 32 vissés sur leurs extrémités permettent d'exercer sur les pièces 26 et les plaques 24 un effort de compression suffisant pour les mettre en précontrainte de façon qu'aucun jeu n'apparaisse entre les pièces et les plaques ou entre celles-ci et la ceinture quelles que soient les conditions d'utilisation, notamment quand la cornue est renversée avec le bec en bas.The parts 26 are pierced with an axial bore for the passage of the rods 28. These pass right through the parts 26 and the belt, and nuts 32 screwed on their ends make it possible to exert on the parts 26 and the plates 24 a sufficient compression force to put them in prestressing so that no play appears between the parts and the plates or between them and the belt whatever the conditions of use, in particular when the retort is overturned with the beak down.

Le pied des pièces 26 traverse la semelle inférieure des chaises 16 et leur chapeau se trouve au-dessus de ladite semelle. Les ouvertures 34 prévues dans la semelle pour le passage du pied des pièces 26 sont oblongues et ont des dimensions nettement supérieures au diamètre du pied de manière à permettre à la cornue de se dilater ou se déformer librement par rapport à la ceinture. Ces ouvertures pourraient aboutir au bord extérieur de la semelle des chaises pour former des échancrures. Un jeu j est ménagé à froid entre le chapeau des pièces 26 et la semelle inférieure des chaises ; ce jeu est choisi pour être pratiquement complètement résorbé à chaud, sans que la semelle 18 puisse être serrée entre le chapeau des pièces 26 et les plaques de glissement 24 et que ses déplacements par rapport à la ceinture puissent être gênés. Ce jeu est obtenu au montage par l'emploi de plaques 24 d'épaisseur convenable.The foot of the parts 26 crosses the bottom sole of the chairs 16 and their hat is located above said sole. The openings 34 provided in the sole for the passage of the foot of the parts 26 are oblong and have dimensions clearly greater than the diameter of the foot so as to allow the retort to expand or deform freely relative to the belt. These openings could lead to the outer edge of the sole of the chairs to form notches. A set j is formed cold between the cap of the parts 26 and the lower sole of the chairs; this game is chosen to be practically completely absorbed when hot, without the sole 18 being able to be clamped between the cap of the parts 26 and the sliding plates 24 and its movements relative to the belt being able to be hindered. This clearance is obtained during assembly by the use of plates 24 of suitable thickness.

Un éperon 36 est soudé sur la semelle inférieure des chaises 16, et est engagé dans une échancrure 38 de la ceinture. Le plan médian des éperons et des échancrures coïncide avec le plan x-x contenant les axes de la cornue et des tourillons et leurs faces coopérantes sont parallèles à ce plan ; un jeu est ménagé entre ces faces pour que, à chaud, l'éperon puisse glisser librement dans l'échancrure. Un jeu beaucoup plus important-est ménagé entre le fond des échancrures et la face en regard des éperons de façon que les éperons ne puissent jamais porter sur le fond des échancrures et qu'aucun effort parallèle à l'axe de la cornue ne soit transmis à la ceinture par l'éperon celui-ci ne peut transmettre à la ceinture que des forces perpendiculaires au plan x-x.A spur 36 is welded to the lower sole of the chairs 16, and is engaged in a notch 38 of the belt. The median plane of the spurs and notches coincides with the plane xx containing the axes of the retort and the trunnions and their cooperating faces are parallel to this. plan ; a clearance is provided between these faces so that, when hot, the spur can slide freely in the notch. A much greater clearance is provided between the bottom of the notches and the opposite face of the spurs so that the spurs can never bear on the bottom of the notches and that no force parallel to the axis of the retort is transmitted. to the belt by the spur it can transmit to the belt only forces perpendicular to the plane xx.

Lorsque la cornue est inclinée ou horizontale, les deux éperons 36 transmettent à la ceinture une partie des forces perpendiculaires au plan x-x s'exerçant sur la cornue. L'autre partie est transmise par deux autres éperons 40 diamétralement opposés aux éperons 36 par rapport à l'axe des tourillons et coopérant avec des échancrures 42 de la ceinture, de la même manière que les éperons 36 avec les échancrures 38. Les éperons 40 sont soudés sur des chaises 44 fixées sur la paroi de la cornue au moyen de boulons pour qu'il soit possible de les démonter lorsqu'on veut séparer la cornue de la ceinture. Les chaises 16 et 44 sont placées de part et d'autre de la ceinture. Comme les éperons 36, les éperons 40 ne peuvent pas porter sur le fond des échancrures et ne peuvent transmettre à la ceinture que des efforts perpendiculaires au plan x-x. A froid, les chaises 44 peuvent être en contact avec la ceinture, mais à chaud, il apparaît un jeu de plusieurs millimètres dû à la dilatation de la cornue, qui est supérieure à celle de la ceinture.When the retort is inclined or horizontal, the two spurs 36 transmit to the belt part of the forces perpendicular to the plane x-x acting on the retort. The other part is transmitted by two other spurs 40 diametrically opposed to the spurs 36 relative to the axis of the trunnions and cooperating with notches 42 of the belt, in the same way as the spurs 36 with the notches 38. The spurs 40 are welded to chairs 44 fixed to the wall of the retort by means of bolts so that it is possible to dismantle them when it is desired to separate the retort from the belt. The chairs 16 and 44 are placed on either side of the belt. Like the spurs 36, the spurs 40 cannot bear on the bottom of the notches and can transmit to the belt only forces perpendicular to the plane x-x. When cold, the chairs 44 can be in contact with the belt, but when hot, there appears a play of several millimeters due to the expansion of the retort, which is greater than that of the belt.

Deux autres chaises 46 munies d'éperons 48 sont fixées à la cornue en deux points diamétralement opposés, le plan médian des éperons étant le plan diamétral perpendiculaire au plan x-x contenant les axes de la cornue et des tourillons. Ces chaises se trouvent au-dessus de la ceinture, quand la cornue est verticale, bec en haut, et les éperons sont engagés dans des échancrures 50 formées sur la face supérieure de la ceinture. Les faces coopérantes des éperons 48 et des échancrures 50 sont perpendiculaires au plan x-x et un jeu suffisant est ménagé entre le fond des échancrures et la face en regard des éperons de sorte que ceux- ci ne peuvent transmettre à la ceinture que des efforts parallèles au plan x-x et perpendiculaires à l'axe de la cornue ; ces efforts sont essentiellement ceux crées par la dilatation dissymétrique de la cornue. Les chaises 46 sont suffisamment écartées de la face supérieure de la ceinture pour que celle-ci ne vienne jamais à leur contact.Two other chairs 46 provided with spurs 48 are fixed to the retort at two diametrically opposite points, the median plane of the spurs being the diametrical plane perpendicular to the plane xx containing the axes of the retort and the journals. These chairs are located above the belt, when the retort is vertical, beak up, and the spurs are engaged in notches 50 formed on the upper face of the belt. Cooperating faces of swords rons 48 and notches 50 are perpendicular to the plane xx and sufficient clearance is provided between the bottom of the notches and the opposite face of the spurs so that the latter can transmit to the belt only forces parallel to the plane xx and perpendicular to the axis of the retort; these efforts are essentially those created by the asymmetric expansion of the retort. The chairs 46 are sufficiently spaced from the upper face of the belt so that the latter never comes into contact with them.

Les éperons 36, 40 et 48 et les échancrures avec lesquelles ils coopèrent permettent de maintenir en coïncidence les axes de la ceinture et de la cornue.The spurs 36, 40 and 48 and the notches with which they cooperate make it possible to keep the axes of the belt and the retort in coincidence.

Il est bien entendu que toutes les modifications qui peuvent être apportées au mode de réalisation décrit par l'emploi de moyens techniques équivalents entrent dans le cadre de l'invention.It is understood that all the modifications which can be made to the embodiment described by the use of equivalent technical means are within the scope of the invention.

Claims (9)

1. Convertisseur constitué par une cornue (10) portée par une ceinture (12) qui l'entoure et est munie de deux tourillons (14) diamétralement opposés permettant le basculement de la cornue autour d'un axe horizontal, la cornue étant munie de chaises (16) reposant sur la face supérieure de la ceinture quand la cornue est verticale et son bec en haut, caractérisé en ce que les dites chaises (16) sont liées à la ceinture par des pièces (26) en forme de champignon dont le chapeau (30) se trouve au-dessus de la semelle (18) des chaises (16) et dont le pied (29), qui traverse ladite semelle, repose sur la face supérieure de la ceinture (12) et est rendu solidaire de celle-ci par des tiges de fixation (28) qui traversent la ceinture (12) parallèlement à son axe et exercent sur les dites pièces (26) des efforts de serrage prédéterminés permettant de les mettre en précontrainte et de les maintenir assemblées sans jeu avec la ceinture (12), en ce que les passages (34) prévus dans les semelles des chaises pour le pied des dites pièces ont des dimensions supérieures à celles des dits pieds pour permettre les dilatations différentielles de la cornue (10) et de la ceinture (12), et en ce qu'un jeu (j) est ménagé au montage entre le chapeau (29) des dites pièces et la semelle (18) des chaises de façon que celles-ci puissent glisser librement sur la ceinture en toutes circonstances.1. Converter constituted by a retort (10) carried by a belt (12) which surrounds it and is provided with two diametrically opposed pins (14) allowing the tilting of the retort around a horizontal axis, the retort being provided with chairs (16) resting on the upper face of the belt when the retort is vertical and its beak at the top, characterized in that said chairs (16) are linked to the belt by pieces (26) in the shape of a mushroom, the hat (30) is located above the sole (18) of the chairs (16) and whose foot (29), which passes through said sole, rests on the upper face of the belt (12) and is made integral with that -this by fixing rods (28) which pass through the belt (12) parallel to its axis and exert on said parts (26) predetermined clamping forces allowing them to be prestressed and to keep them assembled without play with the belt (12), in that the passages (34) provided in the soles of s chairs for the foot of said parts have dimensions greater than those of said feet to allow differential expansions of the retort (10) and of the belt (12), and in that a clearance (j) is provided for assembly between the cap (29) of said parts and the sole (18) of the chairs so that they can slide freely on the belt in all circumstances. 2. Convertisseur selon la revendication 1, caractérisé en ce que les pièces (26) en forme de champignon sont percées d'un alésage axial pour le passage des dites tiges (28).2. Converter according to claim 1, characterized in that the mushroom-shaped parts (26) are pierced with an axial bore for the passage of said rods (28). 3. Convertisseur selon la revendication 1 ou 2, caractérisé en ce que les pièces (26) en forme de champignon sont montées ajustées sur les tiges filetées (28).3. Converter according to claim 1 or 2, characterized in that the parts (26) in the form of a mushroom are mounted adjusted on the threaded rods (28). 4. Convertisseur selon la revendication 1 ou 2, caractérisé en ce que les pièces (26) en forme de champignon sont montées avec jeu sur les tiges filetées (28) et leur pied est encastré dans la ceinture (12) ou dans une plaque (24) solidaire de celle-ci.4. Converter according to claim 1 or 2, characterized in that the parts (26) in the form of a mushroom are mounted with play on the threaded rods (28) and their base is recessed very in the belt (12) or in a plate (24) integral with the latter. 5. Convertisseur selon la revendication 1, 2, 3 ou 4, caractérisé en ce que les pièces (26) en forme de champignon sont en deux parties et le pied (29) est lié au chapeau (30) par encastrement.5. Converter according to claim 1, 2, 3 or 4, characterized in that the mushroom-shaped parts (26) are in two parts and the base (29) is connected to the cap (30) by embedding. 6. Convertisseur selon l'une quelconque des revendications précédentes, caractérisé en ce que la cornue (10) est supportée, lorsqu'elle est verticale, seulement par deux chaises (16) qui sont situées au droit des tourillons (14), chaque chaise reposant sur la ceinture, quand la cornue est verticale avec le bec en haut, en deux zones d'appui situées symétriquement par rapport au plan X-X contenant les axes de la cornue et des tourillons, et la liaison entre chaque chaise et la ceinture est assurée par deux pièces (26) en forme de champignon fixées chacune sur une des dites zones d'appui de la ceinture.6. Converter according to any one of the preceding claims, characterized in that the retort (10) is supported, when it is vertical, only by two chairs (16) which are located in line with the pins (14), each chair resting on the belt, when the retort is vertical with the beak at the top, in two support zones located symmetrically with respect to plane XX containing the axes of the retort and trunnions, and the connection between each chair and the belt is ensured by two mushroom-shaped parts (26) each fixed on one of said support zones of the belt. 7. Convertisseur selon la revendication 6, caractérisé en ce que chaque chaise (16) est munie d'un éperon (36) dont le plan médian coïncide avec le plan X-X contenant les axes des tourillons et de la cornue et qui est engagé dans une échancrure (38) de la ceinture, les faces de l'éperon et de l'échancrure parallèles au dit plan coopérant pour transmettre de la cornue à la ceinture les efforts perpendiculaires à ce plan, et ces éperons (36) sont agencés de façon à ne transmettre à la ceinture aucun effort parallèle à l'axe de la cornue.7. Converter according to claim 6, characterized in that each chair (16) is provided with a spur (36) whose median plane coincides with the plane XX containing the axes of the trunnions and the retort and which is engaged in a notch (38) of the belt, the faces of the spur and the notch parallel to said plane cooperating to transmit from the retort to the belt the forces perpendicular to this plane, and these spurs (36) are arranged so as to do not transmit any force parallel to the axis of the retort to the belt. 8. Convertisseur selon la revendication 6 ou 7, caractérisé en ce que la cornue (10) est munie de deux éperons (40) placés au droit des tourillons (14), à l'opposé des dites chaises (16) par rapport à la ceinture (12), et chaque éperon est engagé dans une échancrure (42) de la ceinture, les faces des éperons et des échancrures parallèles au plan X-X contenant les axes des tourillons et de la cornue coopérant pour transmettre de la cornue à la ceinture les efforts perpendiculaires à ce plan, et ces éperons (40) sont agencés de façon à ne transmettre à la ceinture aucun effort parallèle à l'axe de la cornue.8. Converter according to claim 6 or 7, characterized in that the retort (10) is provided with two spurs (40) placed in line with the pins (14), opposite said chairs (16) relative to the belt (12), and each spur is engaged in a notch (42) of the belt, the faces of the spurs and notches parallel to the plane X - X containing the axes of the journals and the cooperating retort to transmit from the retort to the belt the forces perpendicular to this plane, and these spurs (40) are arranged so as to transmit to the belt no force parallel to the axis of the retort. 9. Convertisseur selon la revendication 6, 7 ou 8, caractérisé en ce que la cornue (10) est munie de deux éperons (48) diamétralement opposés et dont le plan médian est perpendiculaire au plan X-X contenant les axes des tourillons et de la cornue, et chaque éperon est engagé dans une échancrure (50) de la ceinture (12), les faces des éperons et des échancrures parallèles à leur plan médian coopérant pour transmettre de la cornue à la ceinture les efforts perpendiculaires au dit plan médian, ces éperons (48) étant agencés de façon à ne transmettre à la ceinture aucun effort parallèle à l'axe de la cornue.9. Converter according to claim 6, 7 or 8, characterized in that the retort (10) is provided with two spurs (48) diametrically opposed and whose median plane is perpendicular to the plane XX containing the axes of the pins and the retort , and each spur is engaged in a notch (50) of the belt (12), the faces of the spurs and notches parallel to their median plane cooperating to transmit from the retort to the belt the forces perpendicular to said median plane, these spurs (48) being arranged so as not to transmit to the belt any force parallel to the axis of the retort.
EP81400570A 1980-05-12 1981-04-10 Steel-making converters Expired EP0040112B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81400570T ATE3650T1 (en) 1980-05-12 1981-04-10 STEEL MILL CONVERTER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8010556A FR2482135A1 (en) 1980-05-12 1980-05-12 IMPROVEMENT IN STEEL CONVERTERS
FR8010556 1980-05-12

Publications (3)

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EP0040112A1 true EP0040112A1 (en) 1981-11-18
EP0040112B1 EP0040112B1 (en) 1983-06-01
EP0040112B2 EP0040112B2 (en) 1987-09-09

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EP81400570A Expired EP0040112B2 (en) 1980-05-12 1981-04-10 Steel-making converters

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EP (1) EP0040112B2 (en)
JP (1) JPS575812A (en)
AT (1) ATE3650T1 (en)
DE (1) DE3160383D1 (en)
FR (1) FR2482135A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591233A1 (en) * 1985-12-11 1987-06-12 Fives Cail Babcock Improvements to steelworks converters
US4700929A (en) * 1984-03-24 1987-10-20 Mannesmann Ag Mounting a metallurgical vessel
US6290901B1 (en) * 1999-06-19 2001-09-18 Sms Schloemann-Siemag Ag Converter

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6414239A (en) * 1987-07-06 1989-01-18 Idemitsu Petrochemical Co Novel phosphazene compound
JPS6414240A (en) * 1987-07-06 1989-01-18 Idemitsu Petrochemical Co Novel curable resin
JPS6474230A (en) * 1987-09-17 1989-03-20 Idemitsu Petrochemical Co Cured phosphazene resin
JPS6474229A (en) * 1987-09-17 1989-03-20 Idemitsu Petrochemical Co Phosphazene composition
CN101948941B (en) * 2010-10-26 2011-12-21 武汉钢铁(集团)公司 Device for connecting converter body and trunnion ring
ITMI20120871A1 (en) * 2012-05-21 2013-11-22 Danieli Off Mecc SUSPENSION DEVICE FOR OXYGEN AND CONVERTER TILTING CONVERTERS PROVIDED WITH THE SUSPENSION DEVICE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197106B (en) * 1961-12-14 1965-07-22 Beteiligungs & Patentverw Gmbh Converter rotating in an inclined position and tiltable around a transverse axis
FR1550837A (en) * 1967-06-28 1968-12-20
DE1291345B (en) * 1963-08-02 1969-03-27 Demag Ag Converter for steel production with loose support ring and support flange welded onto the vessel
DE1293179B (en) * 1962-03-21 1969-04-24 Demag Ag Exchangeable vessel for metal, especially steel melts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197106B (en) * 1961-12-14 1965-07-22 Beteiligungs & Patentverw Gmbh Converter rotating in an inclined position and tiltable around a transverse axis
DE1293179B (en) * 1962-03-21 1969-04-24 Demag Ag Exchangeable vessel for metal, especially steel melts
DE1291345B (en) * 1963-08-02 1969-03-27 Demag Ag Converter for steel production with loose support ring and support flange welded onto the vessel
FR1550837A (en) * 1967-06-28 1968-12-20

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4700929A (en) * 1984-03-24 1987-10-20 Mannesmann Ag Mounting a metallurgical vessel
FR2591233A1 (en) * 1985-12-11 1987-06-12 Fives Cail Babcock Improvements to steelworks converters
US6290901B1 (en) * 1999-06-19 2001-09-18 Sms Schloemann-Siemag Ag Converter

Also Published As

Publication number Publication date
ATE3650T1 (en) 1983-06-15
FR2482135B1 (en) 1984-12-07
DE3160383D1 (en) 1983-07-07
EP0040112B1 (en) 1983-06-01
JPS575812A (en) 1982-01-12
FR2482135A1 (en) 1981-11-13
JPS6411683B2 (en) 1989-02-27
EP0040112B2 (en) 1987-09-09

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