GB950922A - Cast iron - Google Patents
Cast ironInfo
- Publication number
- GB950922A GB950922A GB47743/62A GB4774362A GB950922A GB 950922 A GB950922 A GB 950922A GB 47743/62 A GB47743/62 A GB 47743/62A GB 4774362 A GB4774362 A GB 4774362A GB 950922 A GB950922 A GB 950922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- silicon
- weight
- spheroidizing agent
- melt
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
In the production of spheroidal graphite iron particularly suitable for mechanical working, crude iron is refined by blowing with oxygen to lower the carbon content to the range of 1.2-3.6% and to remove substantially all the silicon. The bath is then deoxidized with a silicon-containing substance to give a silicon content of 0.2-0.5%; a spheroidizing agent and more silicon are next added, and the melt is cast into a chill mould to yield a carbide iron containing .C.1.2-3.6.% by weight .Si.1.0-2.0. .Mn.1.5. .P.0.07. the balance, apart from spheroidizing agent, impurities and incidental constituents, being iron. By annealing the casting above the upper critical point, e.g. at 1010-1065 DEG C. for 1-2 hours the carbides are decomposed to finely dispersed graphite spheroids and austenite. The initial crude iron contains preferably .C.2.5-4.2.% by weight .Si.2. .Mn.0.05-1. .P.0.06. .S.0.3. The spheroidizing agent is preferably magnesium, e.g. in the form of magnesium ferrosilicon, but this may be wholly or partially replaced by cerium, calcium, lithium, sodium or potassium. As exemplified a master alloy containing .Si.47.% by weight .Mg.9. .Ce.10. .Ca.10. .Fe.balance. is used. Prior to its use the melt is desulphurized with sodium carbonate followed by agitation with nitrogen. If the casting is allowed to become cold before it is annealed, it should be preheated at 540-705 DEG C. to uniform temperature before transfer to the annealing furnace; use of the products for steam traps and gear blanks is referred to. Specifications 630,070 and 678,487 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US162558A US3155498A (en) | 1961-12-27 | 1961-12-27 | Ductile iron and method of making same |
Publications (1)
Publication Number | Publication Date |
---|---|
GB950922A true GB950922A (en) | 1964-02-26 |
Family
ID=22586148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB47743/62A Expired GB950922A (en) | 1961-12-27 | 1962-12-18 | Cast iron |
Country Status (2)
Country | Link |
---|---|
US (1) | US3155498A (en) |
GB (1) | GB950922A (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3310397A (en) * | 1963-07-18 | 1967-03-21 | Inst Liteinogo Proisvodstva | Method of inoculating molten cast iron |
JPS599615B2 (en) * | 1974-09-25 | 1984-03-03 | 株式会社リケン | Tough spheroidal graphite cast iron with superplasticity and heat treatment method |
US4099994A (en) * | 1975-04-22 | 1978-07-11 | Riken Piston Ring Industrial Co. Ltd. | High duty ductile case iron and its heat treatment method |
DE2739159C3 (en) * | 1976-09-09 | 1980-03-13 | Electro-Nite, N.V., Houthalen (Belgien) | Process for the preparation of samples of spherulitic or worm line-shaped cast iron |
GB2203448B (en) * | 1987-03-09 | 1991-05-22 | Hitachi Metals Ltd | Nodular cast iron |
SE8701987L (en) * | 1987-05-26 | 1988-11-15 | Fischer Ag Georg | MAGNESIUM TREATED, COOLING ANGLE CAST IRON MATERIAL |
JP4523776B2 (en) * | 2003-02-12 | 2010-08-11 | 新日本製鐵株式会社 | Cast iron and manufacturing method thereof |
US20040171434A1 (en) * | 2003-02-27 | 2004-09-02 | Roger Cleveland Golf Co., Inc. | Golf club head of ductile or gray iron |
US7824605B2 (en) * | 2006-12-15 | 2010-11-02 | Dexter Foundry, Inc. | As-cast carbidic ductile iron |
ES2394403B2 (en) * | 2009-05-28 | 2013-06-07 | Acos Villares S.A. | A PROCEDURE FOR THE PRODUCTION OF FOUNDRY ROLLERS FOR A ROLLER AND A FOUNDING ROLLER FOR A ROLLING MACHINE |
US8328703B2 (en) * | 2009-05-29 | 2012-12-11 | Acos Villares S.A. | Rolling mill cast roll |
CN101905311B (en) * | 2009-06-03 | 2014-07-02 | 盖尔道集团 | Process for manufacturing cast-rolling roller of rolling mill and cast-rolling roller of rolling mill |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2256674A (en) * | 1939-12-06 | 1941-09-23 | Belle City Malleable Iron Comp | Method of making malleable cast iron |
US2578794A (en) * | 1949-09-02 | 1951-12-18 | Int Nickel Co | Magnesium-treated malleable iron |
GB702776A (en) * | 1950-07-15 | 1954-01-20 | Steinmueller Gmbh L & C | Improvements relating to the production of spherulitic cast iron |
US2855336A (en) * | 1957-02-04 | 1958-10-07 | Thomas W Curry | Nodular iron process of manufacture |
US2937084A (en) * | 1957-11-18 | 1960-05-17 | Voest Ag | Process for production of high-grade cast-iron |
-
1961
- 1961-12-27 US US162558A patent/US3155498A/en not_active Expired - Lifetime
-
1962
- 1962-12-18 GB GB47743/62A patent/GB950922A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3155498A (en) | 1964-11-03 |
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