US2306976A - Process for the removal from cast iron the oxides introduced therein and other foreign inclusions - Google Patents

Process for the removal from cast iron the oxides introduced therein and other foreign inclusions Download PDF

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Publication number
US2306976A
US2306976A US435832A US43583242A US2306976A US 2306976 A US2306976 A US 2306976A US 435832 A US435832 A US 435832A US 43583242 A US43583242 A US 43583242A US 2306976 A US2306976 A US 2306976A
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cast iron
removal
foreign inclusions
oxides introduced
oxides
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Expired - Lifetime
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US435832A
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Nicholas L Pedersen
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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

Definitions

  • Patented Dec. 29, 1942 PROCESS FOR THE REMOVAL FROM CAST IRON THE OXIDES INTRODUCED THERE- IN AND OTHER FOREIGN INCLUSIONS Nicholas L. Peder-sen, Clifton, N. J.
  • This invention relates to the process of removing the oxides and other foreign inclusions introduced into cast iron in its various forms known as gray iron, semi-steel and alloyed cast iron in one single treatment by means of adding a distinct chemical known as sodium silico fluoride to the molten metal as a ladle scavenger or flux, or added to the stream of hot iron in the spout as it leaves the cupola and has for its object the purpose of furnishing to the trade a. superior casting product at a price at par with that charged for the product now cast from the untreated metal.
  • a distinct chemical known as sodium silico fluoride

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Description

Patented Dec. 29, 1942 PROCESS FOR THE REMOVAL FROM CAST IRON THE OXIDES INTRODUCED THERE- IN AND OTHER FOREIGN INCLUSIONS Nicholas L. Peder-sen, Clifton, N. J.
No Drawing. Application March 23, 1942, Serial No. 435,832
lClaim.
This invention relates to the process of removing the oxides and other foreign inclusions introduced into cast iron in its various forms known as gray iron, semi-steel and alloyed cast iron in one single treatment by means of adding a distinct chemical known as sodium silico fluoride to the molten metal as a ladle scavenger or flux, or added to the stream of hot iron in the spout as it leaves the cupola and has for its object the purpose of furnishing to the trade a. superior casting product at a price at par with that charged for the product now cast from the untreated metal.
I have found that sodium silico fluoride when added to the molten iron in amounts up to five reduction in rejects due to such defects as blow holes, sponge and slag, the casting product can pounds for every 2000 pounds of iron to be treatt ed will result in a cast iron more free of blow be manufactured and sold at a price at par with castings made from the ordinary run of untreated metal.
I claim:
The process of removing from cast iron the oxides introduced therein and other foreign inclusions by adding sodium silico fluoride to the molten cast iron.
NICHOLAS L. PEDERSEN.
US435832A 1942-03-23 1942-03-23 Process for the removal from cast iron the oxides introduced therein and other foreign inclusions Expired - Lifetime US2306976A (en)

Priority Applications (1)

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US435832A US2306976A (en) 1942-03-23 1942-03-23 Process for the removal from cast iron the oxides introduced therein and other foreign inclusions

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750279A (en) * 1952-05-24 1956-06-12 Pennsylvania Salt Mfg Co Process of treating cast iron with iron-fluorine compounds
US2760859A (en) * 1952-09-10 1956-08-28 Edward H Graf Metallurgical flux compositions
US2965477A (en) * 1956-09-24 1960-12-20 Foundry Services Int Ltd Treatment of molten metals
US5284617A (en) * 1992-09-04 1994-02-08 General Motors Corporation Process for dealuminizing molten cast iron

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750279A (en) * 1952-05-24 1956-06-12 Pennsylvania Salt Mfg Co Process of treating cast iron with iron-fluorine compounds
US2760859A (en) * 1952-09-10 1956-08-28 Edward H Graf Metallurgical flux compositions
US2965477A (en) * 1956-09-24 1960-12-20 Foundry Services Int Ltd Treatment of molten metals
US5284617A (en) * 1992-09-04 1994-02-08 General Motors Corporation Process for dealuminizing molten cast iron

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