EP0588266A1 - Procédé et appareil pour la fabrication d'objets métalliques - Google Patents

Procédé et appareil pour la fabrication d'objets métalliques Download PDF

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Publication number
EP0588266A1
EP0588266A1 EP93114609A EP93114609A EP0588266A1 EP 0588266 A1 EP0588266 A1 EP 0588266A1 EP 93114609 A EP93114609 A EP 93114609A EP 93114609 A EP93114609 A EP 93114609A EP 0588266 A1 EP0588266 A1 EP 0588266A1
Authority
EP
European Patent Office
Prior art keywords
metal
alloy
main metal
connecting channel
fed
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
EP93114609A
Other languages
German (de)
English (en)
Other versions
EP0588266B1 (fr
Inventor
Harri Juhani Majonen
Tom Erland Marttila
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.)
Outokumpu Wenmec Oy
Original Assignee
Wenmec Systems Oy
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 Wenmec Systems Oy filed Critical Wenmec Systems Oy
Publication of EP0588266A1 publication Critical patent/EP0588266A1/fr
Application granted granted Critical
Publication of EP0588266B1 publication Critical patent/EP0588266B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/007—Treatment of the fused masses in the supply runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D5/00—Machines or plants for pig or like casting

Definitions

  • the present invention relates to a method and apparatus for producing alloy metal objects, advantageously of a standard weight, by means of casting, so that the alloy ingredients are added to the main metal flow after smelting the main metal.
  • the alloy ingredients are usually added, in connection with the smelting of the main metal, to the same smelting furnace in solid state.
  • an analysis sample Prior to the casting, an analysis sample must be taken from the smelting furnace in order to define the right composition, which operation essentially increases the duration of the casting cycle.
  • the furnace Prior to the casting, if several alloys containing different alloy ingredients are desired to be cast in the same smelting furnace, the furnace must essentially be completely emptied in order to prevent any mixing of the respective alloys.
  • the object of the present invention is to eliminate some of the drawbacks of the prior art and to achieve an improved and peratively more secure method and apparatus for producing alloy metal objects, essential of a standard weight, by casting so that the alloy ingredients need not be fed into the smelting furnace used in the smelting of the main metal, but the alloy ingredients are fed later into the molten main metal flow in between the smelting furnace and the casting mould.
  • molten metal from the smelting furnace of the main metal, there is conducted molten metal, advantageously at a rate allowed by the smelting capacity of the furnace, to at least one connecting channel provided in between the smelting furnace and the molten metal batching member, which connecting channel can be moved essentially in the transversal and vertical directions.
  • the amount of molten metal to be conducted into the connecting channel is adjusted by means of control members, so that an essentially continuous feeding of molten metal from the smelting furnace into the connecting channel is achieved.
  • the metals to be alloyed which can be one or several, are conducted in desired quantities to the molten flow in between the smelting furnace and the casting mold, so that the control members adjusting the main metal flow also are advantageously used for adjusting the feeding quantities of the alloy metal or metals, according to the desired alloy ratio and the weigh of the metal object to be cast.
  • the alloy metals can be conducted into the main metal flow either in molten or solid state, either into the connecting channel in between the smelting furnace and the molten metal batching member, or directly into the molten metal batching member.
  • the molten metal is conducted to the batching member advantageously so, that the connecting channel is shifted vertically downwards by means of shifting members, and the melt begins to flow from the connecting channel to the batching member of the casting mold.
  • the feeding rate of the melt from the smelting furnace to the connecting channel and respectively the feeding rate of the alloy metals to the connecting channel, or directly to the batching member if so desired can be increased.
  • the feeding of the melt from the connecting channel to the batching member, and the resulting turbulence of the metal alloy advantageously intensifies the mixing of the metal alloy in an advantageous fashion.
  • the batching member receives the molten metal flow fed from the connecting channel, and possibly also at least one alloy metal flow fed directly into the batching member.
  • a small amount of the said metal alloy is advantageously left in the batching member from the previous casting cycle, so that there can advantageously be taken into account for instance metal losses caused by splashing of the molten metal, as well as metal losses caused by its sticking to the bottom of the batching member.
  • a new charge of molten metal corresponding to the weight of the metal object to be cast, is fed into the batching member. If the metal alloy to be cast should be changed, to the batching member there is fed alloyed molten metal only as much as is necessary in order to make the melt quantity contained in the batching member to correspond to the weight of the metal object to be cast.
  • the melt flow into the batching member is stopped, advantageously for instance by lifting the connecting channel and the alloy metal feeding members to their top position.
  • the alloyed melt corresponding in quantity to the object to be cast is conducted into a casting mold by tilting the batching member. Only if the metal alloy to be cast should be changed, the batching member is emptied altogether, otherwise a small amount of the alloyed molten metal to be cast is advantageously left in the batching member as a base charge.
  • the feeding of the main metal in the metal object to be cast from the smelting furnace to at least one connecting channel in between the smelting furnace and the batching member is advantageously carried out in two successive stages, so that when the connecting channel is in its lifted position, and thus the melt does not flow into the batching member, only molten main metal is fed into the connecting channel.
  • the connecting channel advantageously serves as an intermediate tank for the molten main metal, in which case a separate intermediate tank is not needed, and thus one slag-forming transfer of the melt from one tank to another is avoided.
  • the connecting channel is in its low position, so that the melt flows from the connecting channel to the batching member, the feeding rate of the molten main metal from the smelting furnace into the connecting channel is increased.
  • the feeding of the alloy ingredient or ingredients is switched on, and the alloy ingredients are fed either in solid or molten state to the main metal flow contained in the connecting channel, or directly to the batching member.
  • the main metal flow in the smelting furnace remains clear of the alloy ingredients, and the metal alloy to be cast can be changed simply by changing either the quantity of the alloy ingredient, the alloy ratio or the alloy ingredient, and by feeding the alloy ingredient or ingredients from the smelting furnace to the main metal flow that is already removed from the smelting furnace, in between the smelting furnace and the casting mold.
  • the feeding of the alloy ingredient or ingredients to the connecting channel advantageously starts the alloying of the main metal flow already prior to the batching member.
  • the alloy ingredient quantity, alloy ratio or alloy ingredient of the metal object can be changed essentially without a break in the production.
  • each metal object accurately contains a desired amount of alloy metals, and the metal object is essentially accurately of the desired weight.
  • the alloy ingredient quantity, alloy ratio or alloy ingredients there are not created incorrectly alloyed metal objects, and thus the analysis samples become essentially unnecessary.
  • the need for space and labour is essentially reduced. Owing to its simplicity, the apparatus requires an essentially small amount of building and installation work in the production facilities, and thus the apparatus is installable essentially rapidly, which increases the applicability of the method and apparatus of the invention.
  • the main metal in the metal object to be alloyed is smelted in the smelting furnace 1.
  • the smelted main metal is conducted to the connecting channel 2 advantageously by means of a pump 3, and the molten flow passing therethrough can advantageously be adjusted to be suitable for the capacity of the smelting furnace 1.
  • the quantity of the melt fed into the connecting channel 2 by the pump 3 is adjusted by means of the control member 4.
  • the melt feeding rate is adjusted so that when the connecting channel 2 is in its top position, i.e. during the unloading stage of the batching member 5, the melt feeding rate is advantageously maintained such that only a small amount of melt flows into the chute-like connecting channel 2.
  • the connecting channel 2 when the connecting channel 2 is in its low position, i.e. during the filling stage of the batching members 5, the melt feeding rate is increased, and essentially simultaneously with an increase in the feeding rate, the feeding of alloy ingredients into the connecting channel 2 is begun.
  • One of the alloy ingredients is first smelted in the alloy ingredient smelting furnace 6, and a desired quantity of alloy ingredient per one metal object is conducted via the alloy ingredient batching member 7 to the connecting channel, whereas a desired amount of the second alloy ingredient to be fed in solid state is fed via the alloy ingredient feeder 8 to the molten metal flowing in the connecting channel 2.
  • the feeding of the alloy ingredients to the connecting channel 2 is also advantageously conducted by means of the same control member 4.
  • the alloyed molten metal is conducted in batches and in standard charges to the batching member 5.
  • the standard charge essentially corresponds to the weight of the metal object to be cast.
  • the method of the invention in the first batching after changing the alloying of the metal object, into the batching member 5 there is, however, fed a batch which corresponds to the weight of the metal object to be cast plus the base charge left in the batching member 5 after unloading the same. This base charge is removed in connection with the last unloading of the batching member 5, which takes place prior to changing the alloying of the metal object.
  • a quantity of the alloyed molten metal corresponding to the weight of the metal object to be cast is discharged into the casting mold 9.
  • the casting molds 9 can also be located immovably, advantageously in a curved configuration, so that the batching member 5 is located turnably in the center of the circle pertaining to the said curve.
  • the batching member 5 can advantageously be common for two or several connecting channels 2.
  • the batching member 5 can advantageously be common for two or several connecting channels 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP19930114609 1992-09-14 1993-09-10 Procédé et appareil pour la fabrication d'objets métalliques Expired - Lifetime EP0588266B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI924112A FI95671C (fi) 1992-09-14 1992-09-14 Menetelmä ja laitteisto metallikappaleen valmistamiseksi
FI924112 1992-09-14

Publications (2)

Publication Number Publication Date
EP0588266A1 true EP0588266A1 (fr) 1994-03-23
EP0588266B1 EP0588266B1 (fr) 1999-06-09

Family

ID=8535862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930114609 Expired - Lifetime EP0588266B1 (fr) 1992-09-14 1993-09-10 Procédé et appareil pour la fabrication d'objets métalliques

Country Status (6)

Country Link
EP (1) EP0588266B1 (fr)
JP (1) JP3513190B2 (fr)
AU (1) AU676486B2 (fr)
CA (1) CA2105850A1 (fr)
DE (1) DE69325219T2 (fr)
FI (1) FI95671C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20162690A1 (it) * 2016-04-18 2017-10-18 Fonderia Ghirlandina Spa Impianto di fonderia per la realizzazione di getti in ghisa
CN111534707A (zh) * 2020-04-07 2020-08-14 浙江顺虎铝业有限公司 一种高精度耐磨铝合金材料的一体化生产设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20075949L (fi) * 2007-12-21 2009-06-22 Outotec Oyj Järjestely anodivalulaitoksessa kuparianodien valamiseksi
DE102014104509A1 (de) * 2014-03-31 2015-10-01 Thyssenkrupp Ag Vorrichtung und Verfahren zur Reinigung einer Schmelze und Schmelztauchbeschichtungsanlage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE122573C (fr) *
DE2316045A1 (de) * 1972-04-01 1973-10-04 Mitsui Mining & Smelting Co Verfahren zur herstellung grosser gussbloecke einer zinklegierung
WO1980002659A1 (fr) * 1979-06-07 1980-12-11 Mezger Ag Maschf Giesserei Dispositif de reglage automatique par asservissement pour l'inoculation du metal fondu lors d'une operation de coulee
JPS57134241A (en) * 1981-02-13 1982-08-19 Jidosha Imono Kk Method for addition of inoculant
US4436142A (en) * 1981-11-09 1984-03-13 Harvey Hubbell Incorporated Method and apparatus for making ductile iron castings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE122573C (fr) *
DE2316045A1 (de) * 1972-04-01 1973-10-04 Mitsui Mining & Smelting Co Verfahren zur herstellung grosser gussbloecke einer zinklegierung
WO1980002659A1 (fr) * 1979-06-07 1980-12-11 Mezger Ag Maschf Giesserei Dispositif de reglage automatique par asservissement pour l'inoculation du metal fondu lors d'une operation de coulee
JPS57134241A (en) * 1981-02-13 1982-08-19 Jidosha Imono Kk Method for addition of inoculant
US4436142A (en) * 1981-11-09 1984-03-13 Harvey Hubbell Incorporated Method and apparatus for making ductile iron castings

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 6, no. 236 (M - 173)<1114> 25 November 1982 (1982-11-25) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20162690A1 (it) * 2016-04-18 2017-10-18 Fonderia Ghirlandina Spa Impianto di fonderia per la realizzazione di getti in ghisa
CN111534707A (zh) * 2020-04-07 2020-08-14 浙江顺虎铝业有限公司 一种高精度耐磨铝合金材料的一体化生产设备

Also Published As

Publication number Publication date
FI95671B (fi) 1995-11-30
CA2105850A1 (fr) 1994-03-15
DE69325219T2 (de) 1999-09-30
DE69325219D1 (de) 1999-07-15
FI924112A (fi) 1994-03-15
JP3513190B2 (ja) 2004-03-31
JPH06262300A (ja) 1994-09-20
AU4628593A (en) 1994-03-24
EP0588266B1 (fr) 1999-06-09
FI924112A0 (fi) 1992-09-14
FI95671C (fi) 1996-03-11
AU676486B2 (en) 1997-03-13

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