GB1329216A - Process for controlling carbon content in steel - Google Patents
Process for controlling carbon content in steelInfo
- Publication number
- GB1329216A GB1329216A GB1212672A GB1212672A GB1329216A GB 1329216 A GB1329216 A GB 1329216A GB 1212672 A GB1212672 A GB 1212672A GB 1212672 A GB1212672 A GB 1212672A GB 1329216 A GB1329216 A GB 1329216A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steel
- carbon content
- march
- melt
- treatment
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 4
- 239000010959 steel Substances 0.000 title abstract 4
- 229910052799 carbon Inorganic materials 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title 1
- 239000000155 melt Substances 0.000 abstract 2
- 229910000669 Chrome steel Inorganic materials 0.000 abstract 1
- 229910017060 Fe Cr Inorganic materials 0.000 abstract 1
- 229910002544 Fe-Cr Inorganic materials 0.000 abstract 1
- 229910002551 Fe-Mn Inorganic materials 0.000 abstract 1
- 229910017082 Fe-Si Inorganic materials 0.000 abstract 1
- 229910017133 Fe—Si Inorganic materials 0.000 abstract 1
- 238000005275 alloying Methods 0.000 abstract 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 239000000126 substance 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
- C21C7/0685—Decarburising of stainless steel
-
- 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)
Abstract
1329216 Refining steel VACMETAL GES FUR VAKUUM-METALLURGIE mbH 15 March 1972 [25 March 1971] 12126/72 Heading C7D In a process for removing C from highlyalloyed steel, e.g. chrome steel, previously refined steel is treated with O 2 in a vacuum vessel and the temperature of the gases extracted from the vessel is monitored to detect an abrupt drop, whereupon the O 2 treatment is stopped and the temperature of the melt is measured. By means of a graph such as that shown, the C content is determined and the composition of the melt can be corrected, either by a further O 2 treatment or by adding alloying substances e.g. Fe-Mn (1%C), Fe-Cr (1À5%C), Fe-Si.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2114600A DE2114600B2 (en) | 1971-03-25 | 1971-03-25 | Process for targeted vacuum decarburization of high-alloy steels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1329216A true GB1329216A (en) | 1973-09-05 |
Family
ID=5802782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1212672A Expired GB1329216A (en) | 1971-03-25 | 1972-03-15 | Process for controlling carbon content in steel |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3837841A (en) |
| JP (1) | JPS5428370B1 (en) |
| CS (1) | CS216653B2 (en) |
| DE (1) | DE2114600B2 (en) |
| FR (1) | FR2130350B1 (en) |
| GB (1) | GB1329216A (en) |
| IT (1) | IT952335B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394214A (en) * | 1977-01-31 | 1978-08-18 | Kawasaki Steel Co | Denitriding method of high chrome molten steel with small chrome loss |
| HU189326B (en) * | 1983-08-26 | 1986-06-30 | Lenin Kohaszati Muevek,Hu | Process for production of steels with low or super-low carbon content with the regulation the end point of the carbon and blasting temperature |
| US4732607A (en) * | 1985-11-26 | 1988-03-22 | Sumitomo Metal Industries, Ltd. | Method of controlling the stirring strength and flow rate of a jet of gas blown through a lance onto a molten metal surface |
| CA1337846C (en) * | 1988-06-21 | 1996-01-02 | Hiroshi Nishikawa | Process for vacuum degassing and decarbonization with temperature drop compensating feature |
| KR100287568B1 (en) * | 1995-11-17 | 2001-04-16 | 마리오 파텍 | Method and apparatus for decarburizing steel melt |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3003865A (en) * | 1959-09-10 | 1961-10-10 | Cameron Iron Works Inc | Decarburizing process for alloy steels containing chromium |
| US3420657A (en) * | 1966-02-14 | 1969-01-07 | Union Carbide Corp | Oxygen treatment of chromium alloys |
| US3640119A (en) * | 1966-02-14 | 1972-02-08 | Leeds & Northrup Co | Carbon content measurement in a basic oxygen furnace |
| US3528800A (en) * | 1966-02-14 | 1970-09-15 | Leeds & Northrup Co | Optimized blowing control for basic oxygen furnaces |
| US3450867A (en) * | 1966-03-14 | 1969-06-17 | Leeds & Northrup Co | Estimated tap temperature calculator for basic oxygen furnace |
| AT297071B (en) * | 1966-05-23 | 1972-03-10 | Nippon Steel Corp | Method for determining the carbon content of a steel bath when operating an oxygen converter |
| US3645718A (en) * | 1967-10-09 | 1972-02-29 | Crucible Inc | Method for making steel |
| US3666439A (en) * | 1970-03-02 | 1972-05-30 | Allegheny Ludlum Ind Inc | Method of decarburizing alloy steels |
-
1971
- 1971-03-25 DE DE2114600A patent/DE2114600B2/en not_active Ceased
-
1972
- 1972-03-15 GB GB1212672A patent/GB1329216A/en not_active Expired
- 1972-03-17 US US00235506A patent/US3837841A/en not_active Expired - Lifetime
- 1972-03-17 FR FR7209306A patent/FR2130350B1/fr not_active Expired
- 1972-03-21 CS CS721883A patent/CS216653B2/en unknown
- 1972-03-21 IT IT49143/72A patent/IT952335B/en active
- 1972-03-24 JP JP2908972A patent/JPS5428370B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3837841A (en) | 1974-09-24 |
| JPS5428370B1 (en) | 1979-09-17 |
| FR2130350B1 (en) | 1976-08-06 |
| CS216653B2 (en) | 1982-11-26 |
| FR2130350A1 (en) | 1972-11-03 |
| DE2114600B2 (en) | 1981-05-07 |
| IT952335B (en) | 1973-07-20 |
| DE2114600A1 (en) | 1972-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |