RO98955B1 - Composition for modifying cast irons - Google Patents
Composition for modifying cast ironsInfo
- 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
Links
Landscapes
- 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.
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) |
-
1988
- 1988-03-18 RO RO132638A patent/RO98955B1/en unknown
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