US3849585A - Furnaces - Google Patents

Furnaces Download PDF

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Publication number
US3849585A
US3849585A US00424634A US42463473A US3849585A US 3849585 A US3849585 A US 3849585A US 00424634 A US00424634 A US 00424634A US 42463473 A US42463473 A US 42463473A US 3849585 A US3849585 A US 3849585A
Authority
US
United States
Prior art keywords
door
furnace
cover
container
mounting
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.)
Expired - Lifetime
Application number
US00424634A
Other languages
English (en)
Inventor
R Laflin
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.)
APV Paralec Ltd
Original Assignee
APV Paralec Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by APV Paralec Ltd filed Critical APV Paralec Ltd
Application granted granted Critical
Publication of US3849585A publication Critical patent/US3849585A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • F27B14/061—Induction furnaces
    • 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
    • F27D3/18—Charging particulate material using a fluid carrier

Definitions

  • ABSTRACT A static non-tipping electric induction furnace having a cover which extends over the upper end of the container in which metal to be melted is loaded, said cover comprising an outer casing lined with refractory material and having at one side thereof a cha ing door which slides between open and closed positions.
  • PATENRU .J/ 1 91914 3 849. 58 5 SHEET .3 OF 3 FURNACES This invention relates to furnaces and is more particularly concerned with a static non-tipping electric induction furnace.
  • a static electric furnace has a cover which extends over the upper end of the container in which metal to be melted is loaded, said cover comprising an outer casing lined with refractory material and having at one side thereof a charging door which slides between open and closed positions.
  • the door when opening moves bodily away from the door sill and then moves in a linear direction substantially parallel with the plane of the opening in the cover and thus, the door may be arranged to move in shaped guides which define its movement.
  • the door can be provided with guide elements which are spaced apart across its width and which locate against guides provided on each side of the opening.
  • the door is raised by a pivoted control arm and this may be balanced.
  • the control arm can be pivoted to the cover to one side of the door and power operated means can be provided for opening the door.
  • These power operated means may conveniently comprise a ram connected between the control arm and part of the hood cover.
  • the cover can be provided with an inspection door spaced away from the main charging door and which can be used for sampling.
  • the hood may also include an inclined loading chute which extends beneath the door into the interior of the cover.
  • FIG. 1 is a front view of a furnace cover according to the present invention
  • FIG. 2 is a cross sectional side view of the cover shown in FIG. 1, and
  • FIG. 3 is a part plan view of the same construction.
  • the furnace which is static, and is a coreless induction furnace is indicated generally at 1.
  • the cover indicated generally by reference numeral 2 extends over the upper end of the container 3 in which the metal to be melted is loaded.
  • the cover comprises an outer casing 4 made from steel which is lined with blocks of refractory material 5.
  • a charging door 6 is provided which slides between open and closed positions to close and open an opening indicated by reference numeral 7.
  • the door is also made with a metal outer casing 8 and is lined with a refractory material 9, and in both FIGS. I and 2 is shown in its closed position.
  • the door is provided with two spaced apart guide elements in the forms of guide pins 10 each of which rests against a guide rail 11.
  • the guide rails 11 are formed from angle material and there is a lower guide lug 12 which has an upper surface 13.
  • Each guide rail 11 has an outer surface 14 which extends substantially vertically apart from a lower guide portion 15.
  • the upper end of the door is provided with a pair of lugs 16 through which is passed a connection pin 17 on which is located a ring 18 which is in turn connected to. a connector 19 located in another ring 20 connected to a shackle 21.
  • the shackle 21 is carried on a pivoted control arm 22 which is pivoted to the side of the cover by a pivot pin 23 which also passes through a split bracket 24.
  • the end of the control arm 22 remote from the door 6 carries an adjustable balance weight 25 and the arm is operated by a pneumatic double acting ram 26 one end of which is pivoted at 27 to the arm and the other end at 28 to a bracket 29 carried on the wall of the cover.
  • a chute 32 which has side walls 33 outside the cover.
  • the lower edge of the door 6 is chamferred at 34 and carries an asbestos sheet 35 so that there is a seal against the surface of the chute 32 when the door is in its closed position.
  • the chute is not shown in FIGS. 1 and 3.
  • the door 6 is raised and material tipped onto the chute 32 so that it slides into the furnace. Apparatus which is suitable for charging such a furnace is described and shown in the Applicants co-pending U.S. application Ser. No. 424,560, filed Dec. 13, 1973, and when this kind of construction is employed the operation of the ram 26 is incorporated into the control system.
  • access ports 34 are also incorporated in the cover.
  • access ports 34 to allow for the addition of small quantities of alloy material, the introduction of thermo-couple elements for checking the metal temperature and for deslagging the metal bath during operation.
  • These ports 34 are closed by doors 35 which are also made from an outer casing of metal 36 and lined with a refractory material 37.
  • the portions of the chute 32 which are subject to wear may be lined with wear-resistant or heat-resisting materials (not shown) as appropriate and the selection of the particular type of material will depend upon the ,exact duty which the furnace is to perform.
  • the chute 32 and the cover 2 are carried on a heavy rolled steel frame indicated at 38 so that this can be raised by means of a crane in order to completely remove the roof to obtain acces to the lining for repair and for servicing of the furnace.
  • a static non-tipping electric induction furnace comprising a container in which metal to be melted is loaded, said container having an open upper end and a cover which extends over the upper end, said cover having at one side thereof a doorway defined by a door sill, a charging door, mounting means mounting said door for movement between an open position spaced from said door sill and a closed position engaging said door sill.
  • said mounting means including guide means operable during the initial opening movement of the door for moving the door laterally bodily away from the door sill and then in a linear direction substantially parallel to the door sill.
  • a furnace as claimed in claim 4 in which the control arm is pivoted to the cover to one side of the door.
  • a furnace as claimed in claim 4 in which balancing means are attached to the control arm for balancing the effect of the door thereon.
  • a furnace as claimed in claim 1 in which the cover is provided with an inspection door spaced away from the charging door.
  • a static non-tipping electric induction furnace comprising a container in which metal to be melted is loaded, said container having an open upper end and a cover which extends over the upper end, said cover comprising an outer casing lined with refractory material and having at one side thereof a doorway defined by a door sill, a charging door, mounting means mounting said door for movement between an open position spaced from said door sill and a closed position engaging said door sill, said outer casing including support frame means releaseably seated on said container for facilitating the removal of said cover as a unit to provide access to the interior of the furnace.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
US00424634A 1972-12-21 1973-12-13 Furnaces Expired - Lifetime US3849585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5906672 1972-12-21

Publications (1)

Publication Number Publication Date
US3849585A true US3849585A (en) 1974-11-19

Family

ID=10483005

Family Applications (1)

Application Number Title Priority Date Filing Date
US00424634A Expired - Lifetime US3849585A (en) 1972-12-21 1973-12-13 Furnaces

Country Status (7)

Country Link
US (1) US3849585A (fr)
BE (2) BE808925A (fr)
DE (2) DE2362828A1 (fr)
ES (2) ES421593A1 (fr)
FR (2) FR2212032A5 (fr)
LU (2) LU69031A1 (fr)
NL (2) NL7317424A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1107734B (it) * 1977-04-18 1985-11-25 Forcesi G O Dispositivo di caricamento per forni per la fusione di metalli

Also Published As

Publication number Publication date
DE2362828A1 (de) 1974-06-27
BE808926A (fr) 1974-04-16
NL7317424A (fr) 1974-06-25
FR2212032A5 (fr) 1974-07-19
LU69030A1 (fr) 1974-02-22
FR2212031A5 (fr) 1974-07-19
NL7317423A (fr) 1974-06-25
ES421593A1 (es) 1976-04-01
ES421630A1 (es) 1976-04-16
DE2362827A1 (de) 1974-06-27
LU69031A1 (fr) 1974-02-22
BE808925A (fr) 1974-04-16

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