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EP1334324A2 - Melting furnace for metal leagues fit to the direct and continuous poured of the melted metal - Google Patents

Melting furnace for metal leagues fit to the direct and continuous poured of the melted metal

Info

Publication number
EP1334324A2
EP1334324A2 EP01993806A EP01993806A EP1334324A2 EP 1334324 A2 EP1334324 A2 EP 1334324A2 EP 01993806 A EP01993806 A EP 01993806A EP 01993806 A EP01993806 A EP 01993806A EP 1334324 A2 EP1334324 A2 EP 1334324A2
Authority
EP
European Patent Office
Prior art keywords
metal
basin
wait
melting
leagues
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
EP01993806A
Other languages
German (de)
French (fr)
Other versions
EP1334324B1 (en
Inventor
Antonio Spoleto
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.)
Hitech Srl
Original Assignee
Spoleto Antonio
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11451319&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1334324(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Spoleto Antonio filed Critical Spoleto Antonio
Publication of EP1334324A2 publication Critical patent/EP1334324A2/en
Application granted granted Critical
Publication of EP1334324B1 publication Critical patent/EP1334324B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F27D3/14—Charging or discharging liquid or molten material
    • F27D3/145—Runners therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B1/21—Arrangements of devices for discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/19—Arrangements of devices for discharging
    • 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
    • F27D2003/0085—Movement of the container or support of the charge in the furnace or in the charging facilities
    • F27D2003/0089—Rotation about a horizontal or slightly inclined axis

Definitions

  • the present invention regards an melting furnace for metal leagues of second melting with a special type of connection between the primary parts of the furnace system, the cupola and the basin of wait especially conformed and able to rotate, so that to realize a combined system of making without giving place interruptions of the cycle of work.
  • the first phase is constituted by the loading, in the melting furnace or cupola, of the league scrap and its melting. During this phase it is necessary to furnish remarkable quantity of caloric energy fit to produce the necessary specific heat to the melting of the material and a further quantity of energy, latent heat, necessary to the maintenance of the liquid phase of the metal in the time that is completed the melting of the whole scrap charge present in the cupola.
  • the second phase consists in the blowing out of the furnace and consequent partial cooling to allow the poured of the melted material, to means of special pouring channels, toward the basin of wait.
  • the pouring channels are realized generally with runs to open sky that behave a further cooling of the melted metal.
  • the third and last phase is constituted by the transformation of the material in league in the basin of wait with corrections and additions of metal as well as reinstatement of the caloric energy, constituent the specific and latent heat, necessary to make up for dissipated energy during the inevitable cooling that is had among the before and the second phase.
  • the long times of melting and poured of this technique they favor the absorption of remarkable quantity of gas of the melted material, much is that in the basin it is often had to also apply to a type of correction that foreseed the addition in the bath, through injection of liquid nitrogen, to degasify the league so that to get ingots and pigs exempted by defects.
  • Purpose of the present invention is that to eliminate the inconveniences in the preceding technique realizing an melting furnace that with a special connection allows the poured direct and continuous way of the melted metal from the cupola to the basin of wait able to rotate, and from this last to the ingot mould, decreasing the energetic costs and times of management and employment of hand of work and, at the same time, also realizing good conditions in safety terms of the job because the employees are not to contact with the melted material since the making cycle happens, in practice, completely to the closed one.
  • the continuous making cycle avoids, therefore, the interruptions, for the blowing out and the cooling of the first part of the furnace with least supply, in the second part, of further caloric energy assuring, therefore, the saving of fuel, time and hand of work.
  • the fig. 1 shows in schematic way a lateral view in section of the furnace; the fig. 2 shows in schematic way a view from the top and in section of the furnace; the fig. 3 shows in schematic way the rotating channel of connection.
  • the cupola essentially of cubic form with walls in material refractory (2) surrounded by a metal shirt (3), in which is present on a side the burner (4), on another side the door of load (5) and on the opposite side, centrally in low, an opening (6) from which the melted metal escapes for reaching, through the channel of poured (7) the basin of wait of spherical form (8) that is placed on a lower plan, in a pit (9), sustained by elements of support (10).
  • the channel of poured (7) realizes a special rotating joint, between the cupola (1) and the basin of wait (8), constituted by two hollow cylindrical bodies to circular section, adequately heat insulated (11) and (12), fixed each for an extremity (13) and (14) respectively to the cupola (1) and to the basin of wait (8) and the other free extremity of each (15) and (16), coaxially inserted one in the other.
  • the basin of wait of spherical form (8) is constituted by two semispheres set one on the other, with walls in refractory (17) and heat insulated (18) surrounded by a metallic shirt (19) and positioned in a pit (9) sustained by supports (10) in such way that his meridian circumference is practically to the same height of the channel of poured (7).
  • a burner (20) is placed and the orifice of exit (21) of the liquid metal. The metal scrap a melted time in the cupola, it comes out from the opening
  • the invention fulfils its objectives completely .
  • the particular adopted geometric form (spherical body) of the basin of wait it exalts and improves the whole procedure of the technological cycle of production.
  • the said constituent parts can work in contemporary realizing, so, a continuous melting system with notable saving of fuel, of time and hand of work; they are gotten, therefore, economies with percentages also of the fifty percent in comparison to the standards of the systems of the preceding technique. All the details can be substituted according to necessity by other elements with the same technical characteristics, essentially the dimensions and shapes can be varied according to the user's requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

Melting furnace for leagues of metal of second melting especially conformed with a special type of channel of connection, with a rotating joint (7) among the cupola(1) and the basin of wait of spherical form (8) and able to ruotate, such to allow the poured direct and continuous way of the liquid metal, without giving place interruptions of the cycle of work, from the cupola to the basin of wait and from this to the ingot mould.

Description

Description
Melting furnace for metal leagues fit to the direct and continuous poured of the melted metal.
Technical field
The present invention regards an melting furnace for metal leagues of second melting with a special type of connection between the primary parts of the furnace system, the cupola and the basin of wait especially conformed and able to rotate, so that to realize a combined system of making without giving place interruptions of the cycle of work.
State of the technique
In the systems to traditional technology, three phases of making of the foundry cycle can be individualized tied to the three primary elements: the melting furnace, the channel or the channels of poured and the basin of wait. The first phase is constituted by the loading, in the melting furnace or cupola, of the league scrap and its melting. During this phase it is necessary to furnish remarkable quantity of caloric energy fit to produce the necessary specific heat to the melting of the material and a further quantity of energy, latent heat, necessary to the maintenance of the liquid phase of the metal in the time that is completed the melting of the whole scrap charge present in the cupola. The second phase consists in the blowing out of the furnace and consequent partial cooling to allow the poured of the melted material, to means of special pouring channels, toward the basin of wait. The pouring channels, are realized generally with runs to open sky that behave a further cooling of the melted metal. The third and last phase is constituted by the transformation of the material in league in the basin of wait with corrections and additions of metal as well as reinstatement of the caloric energy, constituent the specific and latent heat, necessary to make up for dissipated energy during the inevitable cooling that is had among the before and the second phase. The long times of melting and poured of this technique, they favor the absorption of remarkable quantity of gas of the melted material, much is that in the basin it is often had to also apply to a type of correction that foreseed the addition in the bath, through injection of liquid nitrogen, to degasify the league so that to get ingots and pigs exempted by defects.
Purposes and aims of the invention
Purpose of the present invention is that to eliminate the inconveniences in the preceding technique realizing an melting furnace that with a special connection allows the poured direct and continuous way of the melted metal from the cupola to the basin of wait able to rotate, and from this last to the ingot mould, decreasing the energetic costs and times of management and employment of hand of work and, at the same time, also realizing good conditions in safety terms of the job because the employees are not to contact with the melted material since the making cycle happens, in practice, completely to the closed one.
The continuous making cycle avoids, therefore, the interruptions, for the blowing out and the cooling of the first part of the furnace with least supply, in the second part, of further caloric energy assuring, therefore, the saving of fuel, time and hand of work. Description of the drawings and way of realizing the invention.
The fig. 1 shows in schematic way a lateral view in section of the furnace; the fig. 2 shows in schematic way a view from the top and in section of the furnace; the fig. 3 shows in schematic way the rotating channel of connection. In the actual form preferred of the present invention and with reference to the attached figures is pointed out with (1) the cupola essentially of cubic form with walls in material refractory (2) surrounded by a metal shirt (3), in which is present on a side the burner (4), on another side the door of load (5) and on the opposite side, centrally in low, an opening (6) from which the melted metal escapes for reaching, through the channel of poured (7) the basin of wait of spherical form (8) that is placed on a lower plan, in a pit (9), sustained by elements of support (10). The channel of poured (7) realizes a special rotating joint, between the cupola (1) and the basin of wait (8), constituted by two hollow cylindrical bodies to circular section, adequately heat insulated (11) and (12), fixed each for an extremity (13) and (14) respectively to the cupola (1) and to the basin of wait (8) and the other free extremity of each (15) and (16), coaxially inserted one in the other. Between the two cylindrical bodies (11) and (12) there is an inter distance than no more than some centimeter in mode that inside can rotate without causing friction in comparison to that outside.
The basin of wait of spherical form (8) is constituted by two semispheres set one on the other, with walls in refractory (17) and heat insulated (18) surrounded by a metallic shirt (19) and positioned in a pit (9) sustained by supports (10) in such way that his meridian circumference is practically to the same height of the channel of poured (7). In proximity of the meridian circumference a burner (20) is placed and the orifice of exit (21) of the liquid metal. The metal scrap a melted time in the cupola, it comes out from the opening
(6) and through the channel of poured (7) reaches the spherical basin of wait (8), here it suffers further treatments, and at the end when the wanted result is reached, through a motorized system the spherical basin of wait (8) is rotated around the axle I of that so much that the liquid metal come out from the orifice of exit (21) to reach the ingot mould.
As can be clearly seen the invention fulfils its objectives completely . In fact, in virtue of the thermodynamic and physical principles of the isotropy, the particular adopted geometric form (spherical body) of the basin of wait, it exalts and improves the whole procedure of the technological cycle of production. Besides thanks to the particular connection realized between the cupola and the basin of wait of the furnace, (although separate, they result, in the operation, united to means of the rotating joint), it is gotten that the said constituent parts can work in contemporary realizing, so, a continuous melting system with notable saving of fuel, of time and hand of work; they are gotten, therefore, economies with percentages also of the fifty percent in comparison to the standards of the systems of the preceding technique. All the details can be substituted according to necessity by other elements with the same technical characteristics, essentially the dimensions and shapes can be varied according to the user's requirements.

Claims

Claims
1) Melting furnace for leagues of metal of second melting characterized by the fact that the channel of poured (7) of the liquid metal, from the cupola (1) to the basin of wait of spherical form (8), is constituted by two hollow cylindrical bodies to circular section (11) and (12), adequately heat insulating, fixed each for an extremity (13) and (14) respectively to the cupola (1) and to the basin of wait (8) and the other free extremity of each (15) and (16) coaxially inserted one in the other in such way that, through a motorized system, the basin of wait (8) can rotate around the axle I, allowing the going out of the melted metal by the orifice of exit (21) and the filling of the ingots mould.
2) Melting furnace for leagues of metal of second melting as to claim 1) characterized by the cupola (1) essentially of cubic form with walls in material refractory (2) surrounded by a metal shirt (3), in which is present on a side the burner (4), on another side the door of load (5), and on the opposite side, centrally in low, an opening (6) from which the melted metal escapes for reaching, through the channel of poured (7), the basin of wait of spherical form (8).
3) Melting furnace for leagues of metal of second melting as to claim 1) characterized by the fact that the channel of poured (7) realizes a special rotating joint between the cupola (1) and the basin of wait (8) and that between the two cylindrical bodies (11) and (12) component, there is an inter distance than no more than some centimeter in mode that inside can rotate without causing friction in comparison to that outside.
4) Melting furnace for leagues of metal of second melting as to claim 1) characterized from the fact that the basin of wait of spherical form (8) is constituted by two hollow semispheres set one on the other, with walls in refractory (17) and heat insulating (18) surrounded by a metallic shirt (19) and is partially positioned in a pit (9) sustained by supports (10) in such way that his meridian circumference is practically to the same height of the channel of poured (7).
5) Melting furnace for leagues of metal of second melting as to claim 1) and 4) characterized by the fact that in proximity of the meridian circumference of the spherical basin of wait (8) is placed a burner (20) and the orifice of exit (21) of the liquid metal 6) Melting furnace for leagues of metal of second melting characterized by the fact that the adoption of a channel of connection with a rotating joint (7), between the cupola (1) and the basin of wait of spherical form (8) and able to ruotate around the axle I, allow the poured direct and continuous way of the liquid metal, without giving place interruptions of the cycle of work, from the cupola to the basin of wait and from this, through the orifice of exit (21), to the ingot mould.
EP01993806A 2000-11-13 2001-11-07 Melting furnace for metal leagues fit to the direct and continuous poured of the melted metal Expired - Lifetime EP1334324B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000075A ITNA20000075A1 (en) 2000-11-13 2000-11-13 Melting furnace for metal alloys suitable for direct and continuous spillage of molten metal.
ITNA20000075 2000-11-13
PCT/IT2001/000557 WO2002039044A2 (en) 2000-11-13 2001-11-07 Melting furnace for metal leagues fit to the direct and continuous poured of the melted metal

Publications (2)

Publication Number Publication Date
EP1334324A2 true EP1334324A2 (en) 2003-08-13
EP1334324B1 EP1334324B1 (en) 2006-09-06

Family

ID=11451319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01993806A Expired - Lifetime EP1334324B1 (en) 2000-11-13 2001-11-07 Melting furnace for metal leagues fit to the direct and continuous poured of the melted metal

Country Status (11)

Country Link
EP (1) EP1334324B1 (en)
JP (1) JP4129914B2 (en)
CN (1) CN100365366C (en)
AT (1) ATE338930T1 (en)
AU (1) AU2002222507A1 (en)
DE (1) DE60122920T2 (en)
DK (1) DK1334324T3 (en)
ES (1) ES2295237T3 (en)
IT (1) ITNA20000075A1 (en)
PT (1) PT1334324E (en)
WO (1) WO2002039044A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011055402A1 (en) 2009-11-09 2011-05-12 Hitech Srl. Completely modular plant for melting and casting aluminium from scrap material
CN105043096A (en) * 2015-07-01 2015-11-11 江苏中储能源装备有限公司 Compact type phase change heat storage medium melting furnace

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITSA20030004A1 (en) * 2003-01-16 2004-07-17 Antonio Spoleto ROTARY OVEN SYSTEM FOR SALT-FREE MELTING OF METAL MATERIALS.
CN116851721B (en) * 2023-07-17 2024-06-11 江苏柯伊诺阀门有限公司 Casting device for thick large valve castings

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069340B (en) * 1959-11-19 Balzers Vakuum Gesellschaft mit beschränkter Haftung, Frankfurt/M.-Süd Device for casting and simultaneous degassing of metals
US2193034A (en) * 1936-05-08 1940-03-12 Mars Georg Apparatus for treating materials under reduced pressure
NO147204C (en) * 1980-06-30 1983-02-23 Ardal Og Sunndal Verk PROCEDURE AND DEVICE FOR DISCONTINUOUS WRAPPING OF LIQUID METAL IN A VACUUM ROOM WHICH CONTINUALLY MAINTAINS VACUUM
CN86203076U (en) * 1986-06-30 1987-04-08 机械工业部上海电缆研究所 Runner unit for oxygen-free copper casting
JPH0783575A (en) * 1993-09-08 1995-03-28 Mitsubishi Materials Corp Gutter for extracting molten metal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0239044A3 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011055402A1 (en) 2009-11-09 2011-05-12 Hitech Srl. Completely modular plant for melting and casting aluminium from scrap material
CN105043096A (en) * 2015-07-01 2015-11-11 江苏中储能源装备有限公司 Compact type phase change heat storage medium melting furnace

Also Published As

Publication number Publication date
ITNA20000075A1 (en) 2002-05-13
WO2002039044A3 (en) 2002-08-22
ATE338930T1 (en) 2006-09-15
ES2295237T3 (en) 2008-04-16
DK1334324T3 (en) 2007-01-15
CN100365366C (en) 2008-01-30
JP2004513327A (en) 2004-04-30
DE60122920D1 (en) 2006-10-19
JP4129914B2 (en) 2008-08-06
ITNA20000075A0 (en) 2000-11-13
CN1394272A (en) 2003-01-29
EP1334324B1 (en) 2006-09-06
DE60122920T2 (en) 2007-06-21
PT1334324E (en) 2007-01-31
AU2002222507A1 (en) 2002-05-21
WO2002039044A2 (en) 2002-05-16

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