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WO2014084793A1 - Agencement pour la coulée par le bas de métal/acier - Google Patents

Agencement pour la coulée par le bas de métal/acier Download PDF

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Publication number
WO2014084793A1
WO2014084793A1 PCT/SE2013/051417 SE2013051417W WO2014084793A1 WO 2014084793 A1 WO2014084793 A1 WO 2014084793A1 SE 2013051417 W SE2013051417 W SE 2013051417W WO 2014084793 A1 WO2014084793 A1 WO 2014084793A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
steel
channel part
melted metal
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE2013/051417
Other languages
English (en)
Inventor
Martin Eriksson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP13857786.1A priority Critical patent/EP2928629A4/fr
Publication of WO2014084793A1 publication Critical patent/WO2014084793A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D9/00—Machines or plants for casting ingots
    • B22D9/006—Machines or plants for casting ingots for bottom casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D35/00—Equipment for conveying molten metal into beds or moulds
    • B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
    • B22D35/045—Runner base plates for bottom casting ingots

Definitions

  • the invention relates to an arrangement for casting from the bottom of metal/steel according to the preamble of claim 1.
  • Casting from the bottom of metal is done by feeding melted metal/steel from below to one or several mould(s), such as cast iron mould(s) .
  • mould(s) such as cast iron mould(s)
  • plashes and wave formations are avoided at the surface of the melted metal/steel in the cast iron mould(s), by which is achieved that the melted metal/steel is filled into the cast iron mould(s) evenly and controlled, and this result in a better and more even structure of the ingot .
  • one or more cast iron mould(s) for casting ingots having adequate shape and size is (are) placed on plates, preferably of cast iron, a so called bottom plate, in which there are channels provided with refractory material, preferably refractory bricks.
  • the channels are arranged to extend from a central distributor having a standing trumpet, which is higher than the cast iron moulds on the bottom plate, to respective cast iron mould. This means that the channels in the bottom plate, as seen in the flow direction of the melted metal/steel, first extend vertically downwardly, and then are angled so as to extend horizontally and then again are angled so as to extend
  • metal/steel is thus charged into the central distributor and flows through the channels and up into respective cast iron mould, whereby these are filled simultaneously to a suitable level, which is the same for all cast iron moulds, whereupon the metal/steel is allowed to solidify (freeze) .
  • a problem with casting from the bottom is that the metal/steel solidifies in the channels. This results in that, when the ingot with cast iron mould is removed for stripping, the ingot on its underside is stuck/attached to the metal solidified in the channel leading to the cast iron mould, and this metal strand must be pulled into two/cut off. This makes it
  • jet When casting brittle metals this jet will be broken off relatively easily, while when casting tough metals this jet must be mechanically removed from the ingot by a cutting torch, for instance.
  • this jet may present a problem if it is not removed in a correct way.
  • the object of the invention is to eliminate the above- mentioned disadvantages at least partly.
  • This object is achieved by an arrangement for casting from the bottom of metal/steel, comprising a distributor for
  • a mould arranged on a bottom plate having at least one channel provided with refectory material, which channel is adapted to, as seen in the flow direction of the melted metal/steel, first extend essentially vertically downwardly from the distributor, then essentially horizontally and then essentially vertically upwardly so as to discharge in the bottom of the mould and to convey the melted metal/steel from the distributor to the mould for casting an ingot, and a dividing device comprising a body having essentially the same cross section area as the channel and is adapted to be driven into the channel, when the flow of melted metal/steel has almost stopped or has stopped so as to divide the channel, characterized in that the
  • dividing device is placed along the channel and comprises a second channel part extending vertically upwardly to an upper surface of the bottom plate, and a third channel part in the form of a blind hole extending in the opposite direction relative to the second channel part and in line with the second channel part, that the body, in the non-divided state, is placed in the third channel part, that a means is arranged in the third channel part, which means extends to at least the bottom of the third channel part and makes it possible for the melted metal/steel to flow to the underside of the body, that the body has a density which is lower than the density of the melted metal/steel, that the body is provided with an
  • Fig. 1 is a schematic, partially sectioned side view showing a cast iron mould with ingot placed on a bottom plate with a non-divided refractory channel for metal,
  • Fig. 2 shows the same view as in Fig. 1 but with divided refractory channel for metal
  • Fig. 3 illustrates a sectional view in larger scale of a part of the refractory channel for metal for dividing the refractory channel, the channel being shown in the non-divided state
  • FIG. 4 illustrates the same sectional view as in Fig. 3 but with the dividing device in divided stat of the metal strand
  • FIG. 5 is a schematic, partially sectioned side view showing a cast iron mould mould with ingot placed on a bottom plate with non-divided refractory channel for metal according to one embodiment according to the invention, and
  • - Fig. 6 is a view similar to the one shown in Fig. 5 with floating state of the body for dividing the refractory
  • Fig. 1 shows schematically a partially sectional side view of an arrangement 1 for casting from the bottom of metal/steel.
  • the arrangement 1 comprises a central distributor (not shown) with a trumpet for distributing melted metal/steel, preferably melted steel, to at least one cast iron mould 2 arranged on a bottom plate 3.
  • a number of cast iron moulds 2 are arranged on one and the same bottom plate.
  • the bottom plate is provided with at least on channel 4 for metal and provided with refractory material, preferably refractory bricks, which channel 4 is adapted to, as seen in the flow direction of the melted metal, first extend essentially vertically downwardly from the distributor, then essentially horizontally and then essentially vertically upwardly so as to discharge on the upper side 5 of the bottom plate 3 and thereby in the bottom 6 of respective cast iron mould 2.
  • refractory material preferably refractory bricks
  • metal/steel is charged into the distributor, whereby the metal/steel flows through the refractory channels 4 and fills at the same time all cast iron moulds 2 to the same level, whereupon the metal is allowed to freeze to form an ingot 7.
  • a device 10 for dividing/blocking the refractory channel to respective cast iron mould is arranged below the upper side 5 of the bottom plate 3.
  • the dividing device 10 according to the invention may be arranged on one hand in the channel 4 which extends further to
  • the dividing device 10 may at the same time be arranged at one or several places along the channel 4 and/or the channel parts 4a, 4b provided with
  • the dividing device 10 comprises a portion of the refractory channel 4, which ends in the bottom 6 of the cast iron mould 2, which portion in the description below is termed muzzle stone 11.
  • the muzzle stone is made of an elongation or a final stone of the channel 4 and forms at least the portion of respective channel 4 which ends in the bottom 6 of the cast iron mould 2.
  • the muzzle stone 11 is at least provided with on one hand a first channel part 4a, which extends essentially horizontally and which constitutes an elongation of the channel 4, and on the other hand a second channel part 4b, which extends essentially vertically and which ends at the upper side 5 of the bottom plate 3.
  • the muzzle stone is provided also with a third channel part 4c which extends in the opposite direction to the second channel part 4b and in line with the same.
  • a body 12 for dividing the channel is arranged in the third channel part 4c.
  • This body 12 is preferably uniform and consists of a material which resists the temperature of the melted metal/steel.
  • the body 12 is displaceable arranged by an actuating device 13, in the form of a pneumatic cylinder 13, for instance, which is adapted to be actuated by compressed air or noble gas, so that the upper portion 12a of the body 12 may be located in the second channel part 4b, whereby the channel is divided. See Fig. 2. In this divided state of the body 12 a lower portion 12b of the body 12 is still located in the channel part 4c for sealing this channel part 4c towards the actuating device.
  • the channel parts 4b and 4c and the body 12 have essentially the same cross section area and shape, i.e. the body 12 fits tight in both channel parts.
  • a jet 20 is formed at the bottom of the ingot 7 (not shown) . This jet 20 extends into the second channel part 4b and will have a fixed length depending upon how far the body 12 is pushed/driven into the second channel part 4b, i.e. the longer the body 12 is
  • the jet 20 gets a defined, short length or no length at all the ingot with cast iron mould can be removed from the bottom plate without the feed for pulling off/cutting the solidified metal strand, as in the prior art is formed in the channel 4.
  • the ingot with cast iron mould can easily be transported to a stripping site without any
  • the third channel part 4c is shaped as a blind hole, see Figs. 5 and 6.
  • Means 14 is arranged in the third channel part 4c, which means extends to at least the bottom of the third channel part 4c and which means makes it possible for melted metal/steel to flow to and below the underside of the body 12.
  • This means 14 may consist of at least one groove or channel 14, for instance, and is arranged at the leading edge, as seen in the flow direction of the melted metal/steel, or at any other portion of the third channel part 4c. This groove extends to the bottom of the third channel part 4c and
  • the means 14 may be formed as a space 14 between the body 12 and the third channel part 4c, which space may extend wholly or partly around the circumference of the third channel part 4c.
  • the body 12 is preferably provided with wholly or partly inclined upper surface 12c, which surface inclines upwardly as seen in the flow direction of the melted metal/steel, and has a density which is lower than the density of the melted metal/ steel .
  • the flowing force of the melted metal/steel will act upon the upper surface of the body 12, and particularly upon the inclined surface 12c of the body 12, in case the body is provided with such inclined surface, and thereby push down the body 12 into the third channel part 4c, while some melted metal/steel will flow into the means 14 and below the body 12, which acts to lift the body 12. More particularly, the
  • inclined surface 12c of the body 12 and/or the density of the body 12 shall be adapted to the density of the melted metal, so that, as long as the melted metal/steel flows in the channel 4, the lifting force of the body 12 is lower than the flowing force of the melted metal/steel, and when the flow of melted metal/steel in channel 4 has almost stopped or has stopped the body 12 will float up into the second channel part 4b and divided channel 4.
  • the body 12 is provided at a lower portion of the same with at least one shoulder 15 adapted to run in a corresponding groove 15a formed in at least the third channel part 4c.
  • the cross section of the second and third channel part 4b, 4c and the body 12 is preferably circular .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blast Furnaces (AREA)

Abstract

L'invention concerne un agencement (1) pour une coulée par le bas de métal/acier, comprenant un distributeur pour distribuer du métal/acier fondu, au moins un moule (2) disposé sur une plaque inférieure (3) ayant au moins un canal (4, 4a, 4b) doté d'une matière réfractaire. Le canal est adapté pour transporter le métal/acier fondu du distributeur vers le ou les moules. Un dispositif de division (10) pour diviser le canal (4, 4a, 4b) comprend un corps (12). Le corps a une densité qui est inférieure à la densité du métal/acier fondu, le corps (12) ayant une surface supérieure inclinée (12c) s'inclinant vers le haut comme vu dans la direction d'écoulement dans le canal du métal/acier fondu. Le corps (12) est adapté pour être conduit dans une seconde partie du canal (4b) au moyen de flottation vers le haut dans ladite seconde partie de canal, lorsque l'écoulement du métal/acier fondu dans le canal s'est plus ou moins arrêté ou s'est arrêté.
PCT/SE2013/051417 2012-11-30 2013-11-29 Agencement pour la coulée par le bas de métal/acier Ceased WO2014084793A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13857786.1A EP2928629A4 (fr) 2012-11-30 2013-11-29 Agencement pour la coulée par le bas de métal/acier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1251361 2012-11-30
SE1251361-0 2012-11-30

Publications (1)

Publication Number Publication Date
WO2014084793A1 true WO2014084793A1 (fr) 2014-06-05

Family

ID=50828282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2013/051417 Ceased WO2014084793A1 (fr) 2012-11-30 2013-11-29 Agencement pour la coulée par le bas de métal/acier

Country Status (2)

Country Link
EP (1) EP2928629A4 (fr)
WO (1) WO2014084793A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015183166A1 (fr) * 2014-05-27 2015-12-03 Martin Eriksson Dispositif pour la coulée en source de métal/acier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672432A (en) * 1970-12-03 1972-06-27 British Iron Steel Research Bottom poured ingots
GB1394905A (en) 1971-05-25 1975-05-21 Graenges Eng Ab Method and apparatus in the casting of ingots by bottom- pouring techniques
JPS59206142A (ja) 1983-05-04 1984-11-21 Kawasaki Steel Corp 下注ぎ造塊による健全鋼塊の製造方法
US5732763A (en) * 1993-05-19 1998-03-31 Rotharnel; Claude Device for feeding molten metal particularly cast iron, to a casting machine, and casting installation incorporating same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672432A (en) * 1970-12-03 1972-06-27 British Iron Steel Research Bottom poured ingots
GB1394905A (en) 1971-05-25 1975-05-21 Graenges Eng Ab Method and apparatus in the casting of ingots by bottom- pouring techniques
JPS59206142A (ja) 1983-05-04 1984-11-21 Kawasaki Steel Corp 下注ぎ造塊による健全鋼塊の製造方法
US5732763A (en) * 1993-05-19 1998-03-31 Rotharnel; Claude Device for feeding molten metal particularly cast iron, to a casting machine, and casting installation incorporating same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2928629A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015183166A1 (fr) * 2014-05-27 2015-12-03 Martin Eriksson Dispositif pour la coulée en source de métal/acier
EP3148727A4 (fr) * 2014-05-27 2018-02-28 Martin Eriksson Dispositif pour la coulée en source de métal/acier

Also Published As

Publication number Publication date
EP2928629A4 (fr) 2016-05-18
EP2928629A1 (fr) 2015-10-14

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