GB1290831A - - Google Patents
Info
- Publication number
- GB1290831A GB1290831A GB1290831DA GB1290831A GB 1290831 A GB1290831 A GB 1290831A GB 1290831D A GB1290831D A GB 1290831DA GB 1290831 A GB1290831 A GB 1290831A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- vacuum
- ladle
- pit
- additions
- 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
- C21C7/10—Handling in a vacuum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
1290831 Refining steels LECTROMELT CORP 7 Jan 1970 [12 June 1969] 747/70 Heading C7D Molten ferrous alloy is introduced into the lower chamber of an apparatus comprising upper and lower chambers connected by a conduit, and is partially forced into the upper chamber by a combination of vacuum applied to the latter and pressure applied to the lower chamber. The metal in the upper chamber is then decarburized by addition of oxides of iron, nickel or chromium, or by gaseous oxygen, while it may also be heated. In one embodiment metal in ladle 11 is introduced into pit 10 which may be sealed by cover 17 and pressurized e.g. by nitrogen supplied through pipe 21. Vessel 27 mounted on the cover is provided with vacuum connection 30, hopper 60 for additions and induction coil 33. By intermittently reducing the pressure in the pit 10 the treated metal from the vacuum vessel may be mixed with the untreated metal remaining in the ladle. In addition to the hopper 60 for oxidizing additions a lance for oxygen may also be provided.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US83278169A | 1969-06-12 | 1969-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1290831A true GB1290831A (en) | 1972-09-27 |
Family
ID=25262597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1290831D Expired GB1290831A (en) | 1969-06-12 | 1970-01-07 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2005468A1 (en) |
| FR (1) | FR2046702B3 (en) |
| GB (1) | GB1290831A (en) |
| ZA (1) | ZA703995B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2032830A1 (en) * | 1970-07-02 | 1972-03-23 | Kloeckner Werke Ag | Process and device for the oxidizing and then reducing treatment of metal melts under reduced pressure |
| US4212665A (en) * | 1978-07-27 | 1980-07-15 | Special Metals Corporation | Decarburization of metallic alloys |
| LU84093A1 (en) * | 1982-04-16 | 1983-12-16 | Arbed | DEVICE FOR METALLURGIC TREATING OF LIQUID METALS |
-
1970
- 1970-01-07 GB GB1290831D patent/GB1290831A/en not_active Expired
- 1970-02-06 DE DE19702005468 patent/DE2005468A1/en active Pending
- 1970-05-21 FR FR707018615A patent/FR2046702B3/fr not_active Expired
- 1970-06-12 ZA ZA703995A patent/ZA703995B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2046702B3 (en) | 1973-03-16 |
| FR2046702A7 (en) | 1971-03-12 |
| DE2005468A1 (en) | 1970-12-23 |
| ZA703995B (en) | 1971-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |