GB867934A - Improved ferrous metal and method of making it - Google Patents
Improved ferrous metal and method of making itInfo
- Publication number
- GB867934A GB867934A GB42174/59A GB4217459A GB867934A GB 867934 A GB867934 A GB 867934A GB 42174/59 A GB42174/59 A GB 42174/59A GB 4217459 A GB4217459 A GB 4217459A GB 867934 A GB867934 A GB 867934A
- Authority
- GB
- United Kingdom
- Prior art keywords
- melt
- temperature
- ferrous metal
- boron
- making
- 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
- 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)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A low-carbon high-silicon ferrous metal containing boron has a microstructure with carbon in the form of compacted graphite, and has a composition such that without boron it would solidify as a white cast iron; the metal has the following composition by weight:-C 1 to 2.5%, Si 1.5 to 3.2%, B 0.001 to 0.05%, with or without S 0 to 0.5%, and Mn with content 1.7 times S content plus 0.2%, with or without Te 0 to 0.01%, and Bi 0 to 0.02%, the total Te and/or Bi up to 0.02%, with Fe as balance. During the production, the melt (e.g. first of low carbon steel and white cast iron) is superheated to a temperature between 2900 DEG F. and 3100 DEG F., then preferably tapped into a ladle (where the boron with or without the Te and/or Bi may be added to the first melt) at a temperature between 2750 DEG F. and 2850 DEG F. and finally poured into a mould at a temperature between 2600 DEG F. and 2800 DEG F. (preferably 2700 DEG F.). The melt may be lanced with a dry gas (e.g. O2, N2, NH3 or A).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US867934XA | 1958-12-29 | 1958-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB867934A true GB867934A (en) | 1961-05-10 |
Family
ID=22200956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB42174/59A Expired GB867934A (en) | 1958-12-29 | 1959-12-11 | Improved ferrous metal and method of making it |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB867934A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2116585A (en) * | 1982-02-27 | 1983-09-28 | Ae Italy S P A | Cast iron alloys |
-
1959
- 1959-12-11 GB GB42174/59A patent/GB867934A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2116585A (en) * | 1982-02-27 | 1983-09-28 | Ae Italy S P A | Cast iron alloys |
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