GB962992A - Method of manufacturing spheroidal graphite-cast steel-and cast iron - Google Patents
Method of manufacturing spheroidal graphite-cast steel-and cast ironInfo
- Publication number
- GB962992A GB962992A GB3771961A GB3771961A GB962992A GB 962992 A GB962992 A GB 962992A GB 3771961 A GB3771961 A GB 3771961A GB 3771961 A GB3771961 A GB 3771961A GB 962992 A GB962992 A GB 962992A
- Authority
- GB
- United Kingdom
- Prior art keywords
- melt
- cast
- iron
- spheroidal graphite
- steel
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- 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
- C21C1/02—Dephosphorising or desulfurising
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Spheroidal graphite-cast steel containing 1.0 -1.5% C and -cast iron containing 2.8-4.5% C is produced by first making the total C content of the raw material, e.g. steel scrap or pig iron, less than 4% and adding 0.5-4% C to the melt in the furnace, e.g. an arc furnace, with or without a basic slag, having a basicity of at least 1, e.g. limestone and fluorspar, thereby effecting intense deoxidation and desulphurization of the melt so that O and S contents thereof become less than 0.003% and 0.02% respectively, and then adding to the melt 0.2-7% Si either as elemental silicon or an alloy thereof, e.g. Fe-Si alloy, preferably a Si-base alloy containing up to 0.1% of SiO2 and/or 0.5-5% of Al; the Si addition may be made to the melt in a ladle after tapping at 1400-1700 DEG C. In order to decrease the oxygen content of the molten steel or iron in the first step, one or more of the alkali or alkaline earth metals, e.g. Na or Ca, Al, alloys thereof, and F-, Cl- or Co3- thereof may be added to the melt. In the case of Ca, the amount of Ca added is less than 0.25%. Conventional spheroidizing agents are referred to such as Mg, Ce, Ca, Sr, Li, Na, K, Te, Zn or alloys thereof.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4349860 | 1960-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB962992A true GB962992A (en) | 1964-07-08 |
Family
ID=12665362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3771961A Expired GB962992A (en) | 1960-10-29 | 1961-10-20 | Method of manufacturing spheroidal graphite-cast steel-and cast iron |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1408888A1 (en) |
| GB (1) | GB962992A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2780511A1 (en) * | 1998-06-25 | 1999-12-31 | Nissabu Corp | Graphite morphology determination in spheroidal and compact vermicular graphite cast irons |
-
1961
- 1961-10-20 GB GB3771961A patent/GB962992A/en not_active Expired
- 1961-10-27 DE DE19611408888 patent/DE1408888A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2780511A1 (en) * | 1998-06-25 | 1999-12-31 | Nissabu Corp | Graphite morphology determination in spheroidal and compact vermicular graphite cast irons |
| BE1015190A5 (en) * | 1998-06-25 | 2004-11-09 | Nissabu Corp | METHOD FOR DETERMINING THE FORM OF GRAPHITE IRONS IN COMPACT spheroidal graphite / vermicular. |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1408888A1 (en) | 1968-10-10 |
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