RO98955B1 - Composition for modifying cast irons - Google Patents

Composition for modifying cast irons

Info

Publication number
RO98955B1
RO98955B1 RO132638A RO13263888A RO98955B1 RO 98955 B1 RO98955 B1 RO 98955B1 RO 132638 A RO132638 A RO 132638A RO 13263888 A RO13263888 A RO 13263888A RO 98955 B1 RO98955 B1 RO 98955B1
Authority
RO
Romania
Prior art keywords
weight
composition
cast iron
cast irons
magnesium
Prior art date
Application number
RO132638A
Other languages
Romanian (ro)
Inventor
Iulian Riposan
Mihai Chisamera
Gheorghe Spinciu
Mircea Boghici
Cristian Alexe
Toader Ichim
Original Assignee
Institutul Politehnic
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 Institutul Politehnic filed Critical Institutul Politehnic
Priority to RO132638A priority Critical patent/RO98955B1/en
Publication of RO98955B1 publication Critical patent/RO98955B1/en

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  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

Inventia se refera la o compozitie pentru modificarea fontelor, care este folosita sub forma de brichete introduse în fonta lichida aflata în oala de turnare, de exemplu, în vederea obtinerii unei fonte cu grafit nodular si vermicular. Compozitia conform inventiei, este constituita din 7...30% în greutate magneziu, 0,2...2,5% în greutate pamânturi rare, 2...12% în greutate carbon, 3...15% în greutate siliciu, 1...6% în greutate calciu, 0...15% în greutate bariu, 0...2% în greutate aluminiu si/sau 0...2% în greutate strontiu, rest fier, în care raportul dintre magneziu si pamânturi rare este de 10 : 1...45 : 1, iar Ca+C+Ba+Al+Sr reprezinta 7,5...15,5% din greutatea totala.The invention relates to a composition for the modification of the cast iron, which is used in the form of briquettes introduced into the cast iron found in the casting pot, for example, in order to obtain a cast iron with nodular and vermicular graphite. The composition according to the invention consists of 7 to 30% by weight of magnesium, 0.2 to 2.5% by weight of rare earths, 2 to 12% by weight of carbon, 3 to 15% by weight silicon, 1-6% by weight of calcium, 0-15% by weight of barium, 0-2% by weight of aluminum and / or 0-2% by weight of strontium, of magnesium and rare earths is 10: 1 ... 45: 1, and Ca + C + Ba + Al + Sr represents 7.5 ... 15.5% of the total weight.

RO132638A 1988-03-18 1988-03-18 Composition for modifying cast irons RO98955B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO132638A RO98955B1 (en) 1988-03-18 1988-03-18 Composition for modifying cast irons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO132638A RO98955B1 (en) 1988-03-18 1988-03-18 Composition for modifying cast irons

Publications (1)

Publication Number Publication Date
RO98955B1 true RO98955B1 (en) 1990-07-30

Family

ID=40907048

Family Applications (1)

Application Number Title Priority Date Filing Date
RO132638A RO98955B1 (en) 1988-03-18 1988-03-18 Composition for modifying cast irons

Country Status (1)

Country Link
RO (1) RO98955B1 (en)

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