US3825240A - Device for making nodular cast iron - Google Patents

Device for making nodular cast iron Download PDF

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Publication number
US3825240A
US3825240A US00294273A US29427372A US3825240A US 3825240 A US3825240 A US 3825240A US 00294273 A US00294273 A US 00294273A US 29427372 A US29427372 A US 29427372A US 3825240 A US3825240 A US 3825240A
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United States
Prior art keywords
vessel
treatment
collar
longitudinal axis
opening
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Expired - Lifetime
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US00294273A
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English (en)
Inventor
H Lustenberger
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.)
Georg Fischer AG
Original Assignee
Georg Fischer AG
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Filing date
Publication date
Application filed by Georg Fischer AG filed Critical Georg Fischer AG
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Publication of US3825240A publication Critical patent/US3825240A/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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron

Definitions

  • ABSTRACT A device for making nodular cast iron with nodular graphite by introducing metallic magnesium into an iron-carbon melt, includes a drum-shaped treatment vessel with a longitudinal axis.
  • the vessel has an opening for charging and discharging the melt and a chamber is formed within the vessel for supplying magnesium into the melt.
  • a collar Disposed around the opening in the vessel is a collar which extends outwardly from the vessel and the axis of the collar is positioned at an acute angle to the longitudinal axis of the vessel. Fur ther, as the axis of the collar extends outwardly it is inclined toward the opposite end of the vessel which contains the charge chamber.
  • the treatment vessel ' is pivotally displaceable between three positions, a filling position, a treatment'position, and a discharging position. When the vessel is in the filling position its longitudinal axis is horizontal, while in the other two positions its longitudinal axis is approximately vertical.
  • the filling position, the vessel opening and the charge chamber are located above the longitudinal axis.
  • the present invention is directed to a device for making nodular cast iron with nodular graphite by introducing metallic magnesium into an iron-carbon melt and, more particularly, it is directed to a treatment vessel pivotally displaceable between a number of different operating positions and the vessel contains an opening 1 for charging and discharging the melt and a charge chamber for supplying magnesium into the melt.
  • the charging chamber is located in the base of the treatment vessel and presents a number of openings communicating with the interior of the vessel so that, when the vessel is in the vertical position, the melt contacts the magnesium in the charging chamber in such a manner that a regulated, dosable evaporation of the magnesium takes place.
  • Anotherobject of the present invention is to provide a tiltable treatment vessel of low structural height so that it can be installed and used immediately adjacent the melting installation. 7
  • the treatment vessel differs from other known designs in that an outwardly extending collar is arranged about the vessel opening and the inner surfaces of the collar are in an outwardly diverging relationship. Further, the opening with the collar and the charging chamber for the magnesium are located on the same side of the vessel spaced from its longitudinal axis. Further, the axis of the collar is inclined in the direction of the charging chamber as it extends outwardly from the vessel and the collar axis forms an acute angle with the longitudinal axis of the treatment vessel.
  • FIG. 1 is a cross-sectional view of a treatment vessel, embodying the present invention, arranged in the filling position;
  • FIG. 2 is a cross-sectional view of the treatment vessel shown in FIG. 1 but in the treatment position;
  • FIG. 3 is a cross-sectional view of the treatment Vessel shown in FIGS. 1 and 2 with the vessel located in the discharging position.
  • the device for making nodular cast iron includes a drum-shaped treatment vessel -1 having a longitudinal axis 2, note FIG. 2, and lined with refractory material. Located in one end of the ves- 0 sel and spaced laterally from its longitudinal axis, is a charging chamber 3 for supplying metallic magnesium into the melt being treated. An opening extends through the treatment vessel 1 into the charging chamber 3 for introducing magnesium into the chamber and a plug-type stopper 4 provides a closure for the openmg.
  • an opening 5 for charging the melt into and for discharging it from thetreatment vessel.
  • the opening 5 has a collar 6 which extends outwardly from the vessel with its inner surfaces diverging as it extends outwardly from the opening 5.
  • the opening 5 and the collar 6 are located on the same side of the vessel 1 as the charging chamber 3.
  • the axis 7 of the opening 5 and its collar 6 is preferably inclined toward the charging chamber and forms, with the longitudinal axis 2, an acute angle a.
  • the treatment vessel 1 has a pivot axis 9 disposed perpendicularly to its longitudinal axis 2.
  • the treatment vessel can be pivoted about the axis 9 either in the direction of the arrow 10, in FIG. 1, or the direction of the arrow 11, in FIG. 2.
  • the vessel is shown with its longitudinal axis arranged horizontally and by pivotally displacing it in the direction of the arrow 10, the vessel assumes the treatment position illustrated in FIG. 2.
  • the vessel can be pivoted in the direction of the arrow 11 and inverted into the discharging position disclosed by FIG. 3. Further, the vessel 1 can be pivoted further than that shown in FIG. 3
  • slag dam 12 is positioned in the mouth of the collar it extends across the path of flow of the melt as it is discharged. In the filling position, shown in FIG. 1, the slag darn can be pivoted about its axis 13 so that it is displaced from the mouth of the collar.
  • the collar6 can be arranged with its axis 7 inclined differently, as long as the angle the axis forms with the longitudinal axis 2 of the treatment vessel does not exceed
  • the treatment vessel 1 is located in the filling position indicated by FIG. 1, and the iron melt to be treated is charged into.
  • the vessel and magnesium in lump form is introduced into the charging cated under the spout 20 of a melting unit, such as a eupola or induction furnace, or of a conveyor bucket.
  • the treatment vessel 1 By pivoting the treatment vessel 1, in the direction of the arrow through approximatelys90", the treatment of the iron melt 8 is commenced.
  • the longitudinal axis of the treatment vessel is approximately vertical and the charging chamber is located at the lower end of the vessel immersed in the melt.
  • the contacting chamber 3 has openings and 16 located through its wall in communication with the interior of the vessel 1.
  • the iron melt passes through one or more openings 15 into contact with the metallic magnesium and causes a controlled evaporation of the magnesium.
  • the magnesium vapor preferably discharging through the opening 16, reacts with the iron melt.
  • the treatment vessel is pivoted about its pivot axis 9 in the direction of the arrow 11 in FIG. 2 until the treated melt commences to empty over the edge 17 of the collar 6 into a conveyor bucket or a pouring ladle 21.
  • the discharging flow 18 is indicated by dashed linesin FIG. 3.
  • the treatment vessel can be pivoted back to the position shown in FIG. 1. Accordingly, the vessel is in position for the next treatment cycle.
  • a square or rectangular vessel can also be used.
  • the configuration of the treatment vessel and its pivoting mechanism affords pivoting motion in both directions up to 360 and provides the shortest pivoting movements between the various positions shown in FIGS. 1 to 3.
  • a line 23 is shown extending from the surface of the melt within the treatment vessel into the collar 6, and the line 23 indicates that there is no straight or direct path for any spatter, developing during the reaction between the metallic magnesium and the iron melt, out of the treatment vessel.
  • the path of the line 23 or any other line from the surface of the melt 8 as it passes over the inner edge 22 at the opening 5 will contact the inner surface of the collar.
  • the arrangement of the collar 6 is such that a direct line of view to the melt in the treatment position of the vessel is not possible. This feature virtually eliminates any danger to the operating personnel. It is unnecessary to provide a cover over the opening 5.
  • the melting unit such as a cupola or induction furnace, can be placed in line with the treatment vessel and a conveyor bucket or pouring ladle for receiving the melt after it has been treated.
  • the discharge of the ironmelt is effected merely by pivoting the treatment vessel which effects a shortening of the overall treatment cycle.
  • the shorter structural lengths of the treatment. vessel made possible by the present invention, also afford a considerable saving in the space required. Filling, emptying and cleaning the treatment vessel of slag through its outwardly expanding collar is easier to accomplish than has been the case in previously known designs.
  • Device for making nodular cast iron with nodular graphite by introducing metallic magnesium into an iron-carbon belt including a drum-shaped treatment vessel having a tubular shaped side wall extending between a pair of end walls, said treatment vessel having a longitudinal axis extending between and through said end walls and said vessel is tiltable about a pivot axis extending transversely of said longitudinal axis, means secured within said treatment chamber forming at least one charging chamber arranged in communication with the interior of said treatment chamber, said charging chamber located at one said end wall and spaced laterally from said longitudinal axis of said treatment vessel and defined in part by said side wall of said vessel, said charging chamber arranged to be charged from the exterior of said treatment vessel, said treatment vessel having an opening for introducing a melt into and discharging the melt from said treatment vessel, wherein the improvement comprises that said opening is spaced in the direction of the longitudinal axis from said charging chamber and said opening is located in said side wall and disposed adjacent the opposite end of said vessel from said charging chamber and is aligned in the longitudinal direction
  • Device for making nodular cast iron as set forth in claim 1, wherein a sla'gdam is displaceably secured to said collar and is arranged to be positioned in the 4.
  • Device for making nodular cast iron with nodular graphite introducing metallic magnesium into an ironcarbon melt including a treatment vessel tiltable about a pivot axis, said vessel having a longitudinal axis, being secured within said treatment chamber and forming at least one charging chamber arranged in communication with the interior of said treatment chamber, said charging chamber spaced laterally from the longitudinal axis of said treatment vessel and arranged to be charged with magnesium from the exterior of said treatment vessel, said treatment vessel having an opening for introducing a melt into and discharging the melt from said treatment vessel, wherein the improvement comprises that said opening is spaced in the direction of the longitudinal axis from said charging chamber, a
  • a slag dam displaceably secured to said collar and arranged to be positioned in the path of the melt discharged through said collar from the opening in said treatment vessel, and said slag dam has a pivot axis located on the end of said collar spaced outwardly from the opening in said treatment vessel so that said slag dam can be pivoted about its axis into the path of the melt to be discharged or can be displaced from the path of flow through said collar into said vessel.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)
US00294273A 1971-10-05 1972-10-02 Device for making nodular cast iron Expired - Lifetime US3825240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1444371A CH564605A5 (ja) 1971-10-05 1971-10-05

Publications (1)

Publication Number Publication Date
US3825240A true US3825240A (en) 1974-07-23

Family

ID=4400871

Family Applications (1)

Application Number Title Priority Date Filing Date
US00294273A Expired - Lifetime US3825240A (en) 1971-10-05 1972-10-02 Device for making nodular cast iron

Country Status (12)

Country Link
US (1) US3825240A (ja)
JP (1) JPS5127203B2 (ja)
AT (1) AT324384B (ja)
CH (1) CH564605A5 (ja)
CS (1) CS174856B2 (ja)
DD (1) DD98951A5 (ja)
DE (1) DE2237236A1 (ja)
ES (1) ES406658A1 (ja)
FR (1) FR2156021B3 (ja)
GB (1) GB1404779A (ja)
IT (1) IT968534B (ja)
SU (1) SU564816A3 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52107236A (en) * 1976-03-06 1977-09-08 Kusaka Reametaru Kenkiyuushiyo Ladle
CH668925A5 (de) * 1985-12-31 1989-02-15 Fischer Ag Georg Behandlungsgefaess zur behandlung von fluessigen metall-legierungen.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1815214C3 (de) * 1968-01-26 1975-06-19 Georg Fischer Ag, Schaffhausen (Schweiz) 03.12.68 Schweiz 17961-68 Kippbares BehandlungsgefäB zum Behandeln von Metall-Schmelzen durch Einbringen verdampfbarer Zusätze, insbesondere zum Herstellen von Eisen-Kohlenstoff-GuBwerkstoffen mit Kugelgraphit durch Einbringen von Reinmagnesium in die im Gefäß enthaltene Schmelze Georg Fischer AG, Schaffhausen (Schweiz)

Also Published As

Publication number Publication date
CH564605A5 (ja) 1975-07-31
AT324384B (de) 1975-08-25
FR2156021B3 (ja) 1975-10-31
GB1404779A (en) 1975-09-03
JPS5127203B2 (ja) 1976-08-11
IT968534B (it) 1974-03-20
DE2237236A1 (de) 1973-04-26
CS174856B2 (ja) 1977-04-29
DD98951A5 (ja) 1973-07-12
FR2156021A1 (ja) 1973-05-25
SU564816A3 (ru) 1977-07-05
ES406658A1 (es) 1975-09-16
JPS4845415A (ja) 1973-06-29

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