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DE969312C - Process for the production of a cast iron in which the graphite is present exclusively as spheroidal graphite - Google Patents

Process for the production of a cast iron in which the graphite is present exclusively as spheroidal graphite

Info

Publication number
DE969312C
DE969312C DER12208A DER0012208A DE969312C DE 969312 C DE969312 C DE 969312C DE R12208 A DER12208 A DE R12208A DE R0012208 A DER0012208 A DE R0012208A DE 969312 C DE969312 C DE 969312C
Authority
DE
Germany
Prior art keywords
graphite
cast iron
issue
iron
production
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
Application number
DER12208A
Other languages
German (de)
Inventor
Dr Phil Franz Roll
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.)
PHIL FRANZ ROLL DR
Original Assignee
PHIL FRANZ ROLL DR
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 PHIL FRANZ ROLL DR filed Critical PHIL FRANZ ROLL DR
Priority to DER12208A priority Critical patent/DE969312C/en
Application granted granted Critical
Publication of DE969312C publication Critical patent/DE969312C/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • 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)

Description

AUSGEGEBEN AM 22. MAI 1958ISSUED MAY 22, 1958

R 12208 VI/18bR 12208 VI / 18b

Die Herstellung von Gußeisen mit Kugelgraphit ist in der Praxis noch nicht so betriebssicher aufgebaut, daß es möglich ist, auch sehr unterschiedliche Gußstücke in allen Wanddicken gleichmäßig zur Auskristallisation von Kugelgraphit zu zwingen. Vielfach werden bei der Erstellung von solchen Gußeisensorten neben der Kristallisation von Kugelgraphit immer noch gewisse störende Anteile von Blättchengraphit beobachtet. Vor allem tritt dieser Blättchengraphit bei zu langer Abstehzeit des Eisens nach dem Legieren mit den bekannten Magnesiumzusätzen (z. B. Mg-Ni usw.) bzw. nach dem Impfen mit z. B. Ferrosilizium auf. Dadurch wird die Festigkeit des Gußeisens dieser Art wesentlich beeinflußt. Vor allem sinkt die Dehnung solcher Gußeisenlegierungen.In practice, the production of cast iron with spheroidal graphite is not yet so reliable, that it is possible to evenly produce very different castings in all wall thicknesses to force nodular graphite to crystallize out. Often used in the creation of such In addition to the crystallization of spheroidal graphite, types of cast iron still have certain disruptive components observed from flake graphite. Above all, this flake graphite occurs if the standing time is too long of iron after alloying with the known magnesium additives (e.g. Mg-Ni etc.) or after vaccination with z. B. ferrosilicon. This increases the strength of the cast iron of this type significantly influenced. Above all, the elongation of such cast iron alloys decreases.

Das nachfolgend beschriebene Verfahren sichert demgegenüber den einwandfreien ioo°/oigen Anfall von Kugelgraphit, so daß auch bei langer Abstehzeit kein Blättchengraphit anfällt. Bekanntlich ist in flüssigen Metallen immer ein gewisser Anteil von Gasen und Oxyden der verschiedensten Art enthalten. Diese Gase und die in Suspension oder Lösung befindlichen Oxyde, Silikate und ähnliche Verunreinigungen sind die Ursache für den Anfall von Blättchengraphit entweder gleich in der bekannten Verfahrenstechnik des Legierens bzw. Impfens oder nach dem Abstehen in längerer als üblicher Zeit.The procedure described below, on the other hand, ensures a perfect 100% attack of spheroidal graphite, so that no flake graphite is obtained even with a long standing time. It is well known in liquid metals there is always a certain proportion of gases and oxides of the most varied kinds contain. These gases and the oxides, silicates and the like that are in suspension or solution Impurities are the cause of the accumulation of flake graphite either in the well known Process engineering of alloying or inoculation or after standing in longer than usual time.

Es wurde nun beobachtet, daß man durch das sogenannte Polen, d. h. also das Umrühren des flüssigen Eisens mit Hilfe eines trockenen Baum-It has now been observed that what is known as poling, i. H. So stirring the liquid iron with the help of a dry tree

809 515/52809 515/52

Stammes (Birke oder Föhre usw.) oder einer Latte aus gleichem Holz oder eines Holzes gleicher Art, das an einem starken Draht in das flüssige Metall hineingehalten wird, die Gase und Oxyde bzw. Suspensionen oder Lösungen austreiben und/oder ausfällen kann, so daß ihre schädliche Wirkung beim Legieren mit den bekannten Mg-Ni-Metallen usw. sowie beim nachfolgenden Impfen entfällt. Dadurch wird auch die Abstehzeit solcher Gußeisensorten nicht mehr schädlich. Es wird somit nach diesem Verfahren die Sicherheit gegeben, Gußeisen mit Kugelgraphit zu erzeugen, das in jedem Falle frei ist von Graphit in Blättchenform. Zweckmäßigerweise wird dieses Polen vor dem Zusatz der Mg-Ni-Legierungen angewendet.Trunk (birch or pine, etc.) or a lath made of the same wood or a wood of the same type, which is held into the liquid metal by a strong wire, the gases and oxides or suspensions or solutions can drive out and / or precipitate, so that their harmful effect when Alloying with the well-known Mg-Ni metals etc. as well as in the subsequent seeding is not necessary. Through this The standing time of such types of cast iron is no longer harmful either. So it becomes after this Process given the security of producing spheroidal graphite cast iron, which is free in any case is made of graphite in flake form. Appropriately, this poles is added before the Mg-Ni alloys are used.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Verfahren zur Herstellung von Gußeisen, in dem der Graphit ausschließlich als Kugelgraphit vorliegt, gekennzeichnet durch die Anwendung des sogenannten Polens, und zwar unter Verwendung trockenen Holzes vor der bekannten Behandlung der Schmelze durch Einführen von Magnesium-Nickel-Legierungen od. dgl. und nachfolgendes Impfen mit Ferrosilizium od. dgl.Process for the production of cast iron, in which the graphite exclusively as spheroidal graphite present, characterized by the application of so-called poling, using dry wood before known treatment of the melt by introducing magnesium-nickel alloys or the like. And subsequent inoculation with ferrosilicon or the like. In Betracht gezogene Druckschriften:Considered publications: Deutsche Patentschriften Nr. 581 579, 674 130; schweizerische Patentschrift Nr. 270 087; französische Patentschrift Nr. 957 046; deutsche Patentanmeldung ρ 5i848/i8dD;German Patent Nos. 581 579, 674 130; Swiss Patent No. 270 087; French Patent No. 957 046; German patent application ρ 5i848 / i8dD; Piwowarsky, E., »Hochwertiges Gußeisen«, 2. Auflage 1951, S. 247;Piwowarsky, E., "High quality cast iron", 2nd edition 1951, p. 247; Tafel, »Lehrbuch der Metallhüttenkunde«, Bd. i, 1951, S. 418, 427;Blackboard, "Textbook of Metallurgy", Vol. I, 1951, pp. 418, 427; Durrer, »Metallurgie des Eisens«, 1943, S.829;Durrer, "Metallurgie des Eisen", 1943, p.829; Durrer, »Grundlagen der Eisengewinnung«, 1947, S. 147;Durrer, "Basics of Iron Extraction", 1947, p. 147; Camp und Francis: »The Making, Shaping and Treating of Steel«, 1951, S. 441; »Metall und Erz«, 1944, Heft 13/14, S. 149/55;Camp and Francis: The Making, Shaping and Treating of Steel, 1951, p. 441; "Metall und Erz", 1944, issue 13/14, p. 149/55; »Die Neue Gießerei, Technisch-Wissenschaftliche Beihefte«, Heft 3 (Juni 1950), S. 102; Heft 10 (1953); «"The New Foundry, Technical-Scientific Supplements", Issue 3 (June 1950), p. 102; Issue 10 (1953); « »Stahl und Eisen«, 1900, S. 1042; »Die Neue Gießerei«, 1950, S. 413; »Die Gießerei«, 1953, S. 94;"Steel and Iron", 1900, p. 1042; "Die Neue Gießerei", 1950, p. 413; "Die Gießerei", 1953, p. 94; »Chemisches Zentralblatt«, 195 i/I, S. 2496; 1952, S. 3893 und 4051;"Chemisches Zentralblatt", 195 i / I, p. 2496; 1952, pp. 3893 and 4051; »The Proceedings of the Institute of British Foundryman«, Bd. XL, 1946/47, S. 14/15;"The Proceedings of the Institute of British Foundryman", Vol. XL, 1946/47, pp. 14/15; »vonRoll-Mitteilungen«, 10. Jahrgang, Nr. 2/3/4 (Juni/Dezember 1951), S. 40."VonRoll-Mitteilungen", Volume 10, No. 2/3/4 (June / December 1951), p. 40. 1809 515/52 5.581809 515/52 5.58
DER12208A 1953-07-25 1953-07-25 Process for the production of a cast iron in which the graphite is present exclusively as spheroidal graphite Expired DE969312C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER12208A DE969312C (en) 1953-07-25 1953-07-25 Process for the production of a cast iron in which the graphite is present exclusively as spheroidal graphite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER12208A DE969312C (en) 1953-07-25 1953-07-25 Process for the production of a cast iron in which the graphite is present exclusively as spheroidal graphite

Publications (1)

Publication Number Publication Date
DE969312C true DE969312C (en) 1958-05-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DER12208A Expired DE969312C (en) 1953-07-25 1953-07-25 Process for the production of a cast iron in which the graphite is present exclusively as spheroidal graphite

Country Status (1)

Country Link
DE (1) DE969312C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248515B (en) * 1965-09-27 1967-08-24 Siemens Ag Tape display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE581579C (en) * 1930-09-22 1933-07-29 Ougree Marihaye Sa D Device for cleaning steel, cast iron and other castable metals
DE674130C (en) * 1936-03-21 1939-04-05 Buderus Eisenwerk Process for the desulfurization of liquid iron
FR957046A (en) * 1950-02-13
CH270087A (en) * 1946-07-22 1950-08-15 British Cast Iron Res Ass Gray cast iron and process for its manufacture.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR957046A (en) * 1950-02-13
DE581579C (en) * 1930-09-22 1933-07-29 Ougree Marihaye Sa D Device for cleaning steel, cast iron and other castable metals
DE674130C (en) * 1936-03-21 1939-04-05 Buderus Eisenwerk Process for the desulfurization of liquid iron
CH270087A (en) * 1946-07-22 1950-08-15 British Cast Iron Res Ass Gray cast iron and process for its manufacture.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248515B (en) * 1965-09-27 1967-08-24 Siemens Ag Tape display device

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