ES406431A1 - Metallurgical process - Google Patents
Metallurgical processInfo
- Publication number
- ES406431A1 ES406431A1 ES72406431A ES406431A ES406431A1 ES 406431 A1 ES406431 A1 ES 406431A1 ES 72406431 A ES72406431 A ES 72406431A ES 406431 A ES406431 A ES 406431A ES 406431 A1 ES406431 A1 ES 406431A1
- Authority
- ES
- Spain
- Prior art keywords
- carbon
- chromium
- oxidation
- metallurgical process
- oxidise
- 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
- 238000010310 metallurgical process Methods 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- 229910052799 carbon Inorganic materials 0.000 abstract 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 3
- 229910052804 chromium Inorganic materials 0.000 abstract 3
- 239000011651 chromium Substances 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
-
- 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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
- C21C7/0685—Decarburising of stainless steel
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)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The carbon content in iron, cobalt, or nickel based alloys containing at least about 16 percent chromium is substantially eliminated without significant loss of chromium by blowing the alloy with oxygen to oxidise the carbon and simultaneously introducing steam or ammonia in amounts such that the partial pressure of carbon monoxide (formed by oxidation of carbon) is lower than that which corresponds to the equilibrium pressure for the carbon/chromium oxidation e.g. below 0.95 and preferably below 0.5 atmospheres.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4650771 | 1971-10-06 | ||
| GB916272*[A GB1396317A (en) | 1971-10-06 | 1972-02-28 | Process for decarbu''sing chromium containing alloys |
| SE7207583A SE386205C (en) | 1971-10-06 | 1972-06-09 | SETTING TO REDUCE THE CARBON CONTENT IN CHROME-CONTAINED METAL MELTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES406431A1 true ES406431A1 (en) | 1975-07-16 |
Family
ID=27255318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES72406431A Expired ES406431A1 (en) | 1971-10-06 | 1972-09-06 | Metallurgical process |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3867135A (en) |
| JP (1) | JPS5545610B2 (en) |
| AT (1) | AT338855B (en) |
| AU (1) | AU477134B2 (en) |
| BE (1) | BE789083A (en) |
| CA (1) | CA977556A (en) |
| DE (1) | DE2243779C2 (en) |
| ES (1) | ES406431A1 (en) |
| FI (1) | FI53597C (en) |
| FR (1) | FR2158859A5 (en) |
| GB (1) | GB1396317A (en) |
| IT (1) | IT964235B (en) |
| LU (1) | LU66234A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4188206A (en) * | 1971-10-06 | 1980-02-12 | Uddeholms Aktiebolag | Metallurgical process |
| FR2340375A2 (en) * | 1976-02-04 | 1977-09-02 | Creusot Loire | PROCESS FOR THE PREPARATION OF CHROME STEELS |
| US4187474A (en) * | 1977-08-11 | 1980-02-05 | Xerox Corporation | Metal vapor laser discharge tube |
| US4260415A (en) * | 1979-12-12 | 1981-04-07 | Allegheny Ludlum Steel Corporation | Decarburizing molten metal |
| US4451288A (en) * | 1982-06-29 | 1984-05-29 | Union Carbide Corporation | Method for producing low hydrogen content in steels produced by subsurface pneumatic refining |
| US5055253A (en) * | 1990-07-17 | 1991-10-08 | Nelson & Associates Research, Inc. | Metallic composition |
| US5182079A (en) * | 1990-07-17 | 1993-01-26 | Nelson & Associates Research, Inc. | Metallic composition and processes for use of the same |
| US5505798A (en) * | 1994-06-22 | 1996-04-09 | Jerry L. Nelson | Method of producing a tool or die steel |
| US6146033A (en) * | 1998-06-03 | 2000-11-14 | Printronix, Inc. | High strength metal alloys with high magnetic saturation induction and method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2079901A (en) * | 1934-07-05 | 1937-05-11 | Burtner Fleeger | Metallurgical addition agent and process |
| US2855293A (en) * | 1955-03-21 | 1958-10-07 | Air Liquide | Method and apparatus for treating molten metal with oxygen |
| US2864689A (en) * | 1956-07-24 | 1958-12-16 | Electro Chimie Metal | Process of successively desulphurizing and desiliconizing a bath of pig iron |
| US3076703A (en) * | 1958-04-28 | 1963-02-05 | Arbed | Manufacture of steel |
| BE610265A (en) * | 1960-11-18 | |||
| BE635868A (en) * | 1962-08-07 | |||
| GB1182959A (en) * | 1967-12-08 | 1970-03-04 | Steel Co Of Wales Ltd | Improvements in and relating to the Refining of Iron. |
| GB1253581A (en) * | 1968-02-24 | 1971-11-17 | Maximilianshuette Eisenwerk | Improvements in processes and apparatus for making steel |
-
0
- BE BE789083D patent/BE789083A/en not_active IP Right Cessation
-
1972
- 1972-02-28 GB GB916272*[A patent/GB1396317A/en not_active Expired
- 1972-07-28 FI FI2128/72A patent/FI53597C/en active
- 1972-08-24 IT IT28475/72A patent/IT964235B/en active
- 1972-09-06 DE DE2243779A patent/DE2243779C2/en not_active Expired
- 1972-09-06 ES ES72406431A patent/ES406431A1/en not_active Expired
- 1972-10-02 AT AT845572A patent/AT338855B/en not_active IP Right Cessation
- 1972-10-04 LU LU66234A patent/LU66234A1/xx unknown
- 1972-10-04 JP JP9972072A patent/JPS5545610B2/ja not_active Expired
- 1972-10-04 AU AU47399/72A patent/AU477134B2/en not_active Expired
- 1972-10-04 FR FR7235109A patent/FR2158859A5/fr not_active Expired
- 1972-10-05 US US295355A patent/US3867135A/en not_active Expired - Lifetime
- 1972-10-05 CA CA153,345A patent/CA977556A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3867135A (en) | 1975-02-18 |
| JPS4845413A (en) | 1973-06-29 |
| FI53597C (en) | 1978-06-12 |
| CA977556A (en) | 1975-11-11 |
| FR2158859A5 (en) | 1973-06-15 |
| JPS5545610B2 (en) | 1980-11-19 |
| IT964235B (en) | 1974-01-21 |
| AT338855B (en) | 1977-09-26 |
| ATA845572A (en) | 1977-01-15 |
| DE2243779C2 (en) | 1985-06-27 |
| FI53597B (en) | 1978-02-28 |
| DE2243779A1 (en) | 1973-04-12 |
| LU66234A1 (en) | 1973-02-01 |
| GB1396317A (en) | 1975-06-04 |
| AU477134B2 (en) | 1976-10-14 |
| AU4739972A (en) | 1974-04-11 |
| BE789083A (en) | 1973-01-15 |
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