FR2427392A1 - Cementite-surface-free cast iron prodn. - by adding modifying mixt. comprising silico-calcium, silico-mischmetal, silumin and cupola coke - Google Patents
Cementite-surface-free cast iron prodn. - by adding modifying mixt. comprising silico-calcium, silico-mischmetal, silumin and cupola cokeInfo
- Publication number
- FR2427392A1 FR2427392A1 FR7816086A FR7816086A FR2427392A1 FR 2427392 A1 FR2427392 A1 FR 2427392A1 FR 7816086 A FR7816086 A FR 7816086A FR 7816086 A FR7816086 A FR 7816086A FR 2427392 A1 FR2427392 A1 FR 2427392A1
- Authority
- FR
- France
- Prior art keywords
- silico
- cast iron
- silumin
- cementite
- mixt
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
- C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys
-
- 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
- C21C1/08—Manufacture of cast-iron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A cast iron modifier contg. (by wt.) 30-40% Si, 2-8% rare earth elements, 10-20% Ca, 15-30% Al, 10-30% C, 0.1-0.3% S, balance Fe is added to molten cast iron in the form of a mixt. of 30-55 wt.% silicocalcium, 15-30 wt.% silumin, 5-25 wt.% silicomischmetal, and 10-30 wt.% cupola coke. The amt. added is 0.4-0.8% by wt. The modifier enables high quality castings or 5-10 mm. wall thickness to be mfd. in metal moulds without formation of cementite on the surface of the castings, thus eliminating the need for costly high-temp. annealing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7816086A FR2427392A1 (en) | 1978-05-30 | 1978-05-30 | Cementite-surface-free cast iron prodn. - by adding modifying mixt. comprising silico-calcium, silico-mischmetal, silumin and cupola coke |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7816086A FR2427392A1 (en) | 1978-05-30 | 1978-05-30 | Cementite-surface-free cast iron prodn. - by adding modifying mixt. comprising silico-calcium, silico-mischmetal, silumin and cupola coke |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2427392A1 true FR2427392A1 (en) | 1979-12-28 |
FR2427392B1 FR2427392B1 (en) | 1980-11-14 |
Family
ID=9208845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7816086A Granted FR2427392A1 (en) | 1978-05-30 | 1978-05-30 | Cementite-surface-free cast iron prodn. - by adding modifying mixt. comprising silico-calcium, silico-mischmetal, silumin and cupola coke |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2427392A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1338775A (en) * | 1962-11-08 | 1963-09-27 | Foseco Trading Ag | Treatment of cast iron and metals to be used for this purpose |
FR1429743A (en) * | 1965-04-02 | 1966-02-25 | Treibacher Chemische Werke Ag | Process for treating molten metals and new products thus obtained |
FR2049052A1 (en) * | 1969-03-15 | 1971-03-26 | Tsniitmash | Cast iron modification agent |
FR2264886A2 (en) * | 1974-03-22 | 1975-10-17 | Centres Rech Scientif Tech In |
-
1978
- 1978-05-30 FR FR7816086A patent/FR2427392A1/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1338775A (en) * | 1962-11-08 | 1963-09-27 | Foseco Trading Ag | Treatment of cast iron and metals to be used for this purpose |
FR1429743A (en) * | 1965-04-02 | 1966-02-25 | Treibacher Chemische Werke Ag | Process for treating molten metals and new products thus obtained |
FR2049052A1 (en) * | 1969-03-15 | 1971-03-26 | Tsniitmash | Cast iron modification agent |
FR2264886A2 (en) * | 1974-03-22 | 1975-10-17 | Centres Rech Scientif Tech In |
Also Published As
Publication number | Publication date |
---|---|
FR2427392B1 (en) | 1980-11-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1126013A (en) | Process for production of as-cast nodular iron | |
GB1357382A (en) | Agent for adding to a mould in which molten ferritic stainless steel is cast by a continuous casting process | |
FR2427392A1 (en) | Cementite-surface-free cast iron prodn. - by adding modifying mixt. comprising silico-calcium, silico-mischmetal, silumin and cupola coke | |
ES8402190A1 (en) | Method of making cast iron engine blocks and the like. | |
GB1341503A (en) | ||
ES468347A1 (en) | Manufacture of metal castings | |
FR2416268A1 (en) | Graphitisation modifier for cast iron - comprising silico-Mischmetal and coke, reducing cementite formation at thin walled casting surface | |
GB1377655A (en) | Vitreous enamelling steel | |
US1860852A (en) | Ferrous alloys | |
GB930523A (en) | Improvements in or relating to a process for producing grey cast iron | |
SU726173A1 (en) | Method of cast iron modification | |
GB1283829A (en) | A manufacturing method of free-cutting lead steel | |
ES230899A1 (en) | Process for making welding rods | |
GB1168160A (en) | A Synthetic Slag Forming Composition for the Casting of Steel Ingots | |
SU678081A1 (en) | Steel | |
GB1276018A (en) | Casting of ingots | |
GB100848A (en) | Process for the Production of an Alloy containing Magnesium and serving for the Deoxydisation of Cast Iron or Steel. | |
SU663483A1 (en) | Method of modifying cast iron in a mould | |
GB1240944A (en) | A method of manufacturing cooling members for a cooling system of a furnace | |
GB976812A (en) | Process for the preparation of cast iron having a eutectic graphite formation | |
JPS5265709A (en) | Oxygen steel making process in which oxygen steel making slag is hot r echarged into oxygen steel making furnace | |
GB1436561A (en) | Repair of ingot mould bottom plates | |
GB867934A (en) | Improved ferrous metal and method of making it | |
ES437892A1 (en) | A procedure to tune cast steel. (Machine-translation by Google Translate, not legally binding) | |
GB337844A (en) | Manufacture of cast iron |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |