FR2186974A5 - Decarburisation of iron and steel alloys - contg chromium by blowing with oxygen, carbon dioxide and a rare gas - Google Patents
Decarburisation of iron and steel alloys - contg chromium by blowing with oxygen, carbon dioxide and a rare gasInfo
- Publication number
- FR2186974A5 FR2186974A5 FR7219428A FR7219428A FR2186974A5 FR 2186974 A5 FR2186974 A5 FR 2186974A5 FR 7219428 A FR7219428 A FR 7219428A FR 7219428 A FR7219428 A FR 7219428A FR 2186974 A5 FR2186974 A5 FR 2186974A5
- Authority
- FR
- France
- Prior art keywords
- carbon dioxide
- oxygen
- rare gas
- contg
- decarburisation
- 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
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 title abstract 2
- 239000007789 gas Substances 0.000 title abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title 2
- 229910000851 Alloy steel Inorganic materials 0.000 title 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title 1
- 229910000640 Fe alloy Inorganic materials 0.000 title 1
- 238000007664 blowing Methods 0.000 title 1
- 229910052804 chromium Inorganic materials 0.000 title 1
- 239000011651 chromium Substances 0.000 title 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 239000000155 melt Substances 0.000 abstract 2
- 229910000604 Ferrochrome Inorganic materials 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 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
- 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)
Abstract
Alloys contg. Cr are blown with a mixt of oxygen, carbon dioxide and a rare gas. The carbon dioxide decomposes into CO and O2 absorbing some heat released by the reaction between the O2 input and the Cu in the melt and the temp. of the melt is thus kept below 1750 degrees C above which temp the refractory lining becomes rapidly degraded. Method is esp. useful for stainless steel and ferrochrome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7219428A FR2186974A5 (en) | 1972-05-31 | 1972-05-31 | Decarburisation of iron and steel alloys - contg chromium by blowing with oxygen, carbon dioxide and a rare gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7219428A FR2186974A5 (en) | 1972-05-31 | 1972-05-31 | Decarburisation of iron and steel alloys - contg chromium by blowing with oxygen, carbon dioxide and a rare gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2186974A5 true FR2186974A5 (en) | 1974-01-11 |
Family
ID=9099386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7219428A Expired FR2186974A5 (en) | 1972-05-31 | 1972-05-31 | Decarburisation of iron and steel alloys - contg chromium by blowing with oxygen, carbon dioxide and a rare gas |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2186974A5 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2235198A1 (en) * | 1973-06-28 | 1975-01-24 | Union Carbide Corp |
-
1972
- 1972-05-31 FR FR7219428A patent/FR2186974A5/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2235198A1 (en) * | 1973-06-28 | 1975-01-24 | Union Carbide Corp |
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