GB803652A - Process for producing nodular cast iron - Google Patents
Process for producing nodular cast ironInfo
- Publication number
- GB803652A GB803652A GB18592/58A GB1859258A GB803652A GB 803652 A GB803652 A GB 803652A GB 18592/58 A GB18592/58 A GB 18592/58A GB 1859258 A GB1859258 A GB 1859258A GB 803652 A GB803652 A GB 803652A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- magnesium
- agent
- sulphur content
- calcium carbide
- 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
Links
Classifications
-
- 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
- C21C1/10—Making spheroidal graphite cast-iron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A process for the production of spheroidal graphite cast iron in which a stream of calcium carbide is injected to produce a minimum sulphur content higher than 0.01 per cent and a spheroidizing agent is added together with an innoculant, is characterized by the addition to the melt of a metal or alloy deoxidizing agent prior to the injection of the calcium carbide to reduce the sulphur content to less than 0.01 per cent, and the addition of spheroidizing agent in amount to provide less than 0.01 per cent residual spheroidizing agent in the metal. The deoxidizing agent may be an alloy of calcium-silicon or aluminium and the amount added may be 0.1 per cent of the weight of the melt. The calcium carbide may be added in a stream of inert gas, e.g. argon, to reduce the sulphur content to between 0.005 per cent and 0.01 per cent. The spheroidizing agent may be magnesium, cerium, magnesium - ferro-silicon, misch metal, rare earth oxides, or cerium-magnesium-ferrosilicon. Specifications 630,070 and 670,245 also are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US803652XA | 1953-12-30 | 1953-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB803652A true GB803652A (en) | 1958-10-29 |
Family
ID=22156906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18592/58A Expired GB803652A (en) | 1953-12-30 | 1954-12-29 | Process for producing nodular cast iron |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB803652A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438274A (en) * | 2022-02-21 | 2022-05-06 | 内蒙古圣泉科利源新材料科技有限公司 | Production method of special high-silicon nodulizer for large castings |
-
1954
- 1954-12-29 GB GB18592/58A patent/GB803652A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438274A (en) * | 2022-02-21 | 2022-05-06 | 内蒙古圣泉科利源新材料科技有限公司 | Production method of special high-silicon nodulizer for large castings |
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