DE807096C - Tempering agent for glow freshening - Google Patents

Tempering agent for glow freshening

Info

Publication number
DE807096C
DE807096C DEP27215D DEP0027215D DE807096C DE 807096 C DE807096 C DE 807096C DE P27215 D DEP27215 D DE P27215D DE P0027215 D DEP0027215 D DE P0027215D DE 807096 C DE807096 C DE 807096C
Authority
DE
Germany
Prior art keywords
freshening
glow
manganese
tempering agent
ores
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
DEP27215D
Other languages
German (de)
Inventor
Dr-Ing Habil Eugen Piwowarsky
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.)
PIWOWARSKY EUGEN DR ING HABIL
Original Assignee
PIWOWARSKY EUGEN DR ING HABIL
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 PIWOWARSKY EUGEN DR ING HABIL filed Critical PIWOWARSKY EUGEN DR ING HABIL
Priority to DEP27215D priority Critical patent/DE807096C/en
Application granted granted Critical
Publication of DE807096C publication Critical patent/DE807096C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D5/00—Heat treatments of cast-iron
    • C21D5/04—Heat treatments of cast-iron of white cast-iron
    • C21D5/06—Malleabilising
    • C21D5/08—Malleabilising with oxidation of carbon
    • C21D5/12—Malleabilising with oxidation of carbon in solid agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Tempermittel zum Glühfrischen Beim Glühfrischen von Temperrohguß besteht die Gefahr, daß bei zu scharfer Einstellung des Tempermittels eine Versinterung oder Verschlackung der Oberfläche der Gußstücke erfolgt, wodurch sie unansehnlich, unbrauchbar oder für eine nachfolgende Oberflächenbehandlung, z. B. Emaillierung, ungeeignet werden.Tempering agent for annealing refining In the annealing refining of malleable cast iron consists the risk of sintering if the tempering medium is set too sharply or slagging of the surface of the castings, making them unsightly, unusable or for a subsequent surface treatment, e.g. B. enamelling, become unsuitable.

Nach vorliegender Erfindung können die gekennzeichneten Fehler beseitigt und meistens auch noch eine ``erbesserung der notwendigen Temperzeiten erzielt werden, wenn man als Tempermittel ein Erz verwendet, das größere Mengen von 'Man ganoxyden enthält. Außer Siegerländer Spateisenstein oder ähnlichen Erzen eignen sich auch ausgesprochene Manganerze für den vorliegenden Zweck. Gegebenenfalls kann inan vorhandene Eisenerze oder Walzensinter mit manganhaltigen Erzen, Manganerzen oder technisch reinen Oxyden des Mangans in geeigneter Weise mischen. Unter vergleichbaren Verhältnissen kann die Tempererzmischung, bezogen auf das dreiwertige Grundmetall (Eisen bzw. '.Mangan), schärfer eingestellt werden, ohne daß die oben gekennzeichneten Mängel auftreten.According to the present invention, the identified errors can be eliminated and mostly also an `` improvement of the necessary tempering times can be achieved, if an ore is used as the tempering medium, the larger quantities of 'Man ganoxyden contains. Besides Siegerland Spateisenstein or similar ores are also suitable pronounced manganese ores for the present purpose. If necessary, inan existing Iron ores or roller sintering with ores containing manganese, manganese ores or technical Mix pure oxides of manganese in a suitable manner. Under comparable conditions the tempering ore mixture, based on the trivalent base metal (iron or '. Manganese), can be set more sharply without the defects identified above appear.

Claims (1)

PATENTANSPRUCH: Tempermittel zum Herstellen von Temperguß mit sauberer Oberfläche durch Glühfrischen, dadurch gekennzeichnet, daß es zum Teil oder ganz aus manganhaltigen Erzen, Manganerzen oder technisch reinen Manganoxyden besteht.PATENT CLAIM: Tempering agent for the production of malleable cast iron with cleaner Surface by annealing, characterized in that it is partially or entirely consists of ores containing manganese, manganese ores or technically pure manganese oxides.
DEP27215D 1948-12-28 1948-12-28 Tempering agent for glow freshening Expired DE807096C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP27215D DE807096C (en) 1948-12-28 1948-12-28 Tempering agent for glow freshening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP27215D DE807096C (en) 1948-12-28 1948-12-28 Tempering agent for glow freshening

Publications (1)

Publication Number Publication Date
DE807096C true DE807096C (en) 1951-06-25

Family

ID=7370738

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP27215D Expired DE807096C (en) 1948-12-28 1948-12-28 Tempering agent for glow freshening

Country Status (1)

Country Link
DE (1) DE807096C (en)

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