GB1233672A - - Google Patents
Info
- Publication number
- GB1233672A GB1233672A GB1233672DA GB1233672A GB 1233672 A GB1233672 A GB 1233672A GB 1233672D A GB1233672D A GB 1233672DA GB 1233672 A GB1233672 A GB 1233672A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steel
- ladle
- melt
- nitrogen
- aluminium
- 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
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
Abstract
1,233,672. Producing steel. NIPPON KOKAN K.K. June 30, 1969 [July 1, 1968], No.33017/69. Heading C7D. Non-ageing deep-drawing steel is produced by feeding into a refined steel melt in a ladle at a rate of more than 5m/sec an aluminium wire of diameter greater than 5mm and simultaneously injecting nitrogen, nitrogen-rich inert gas or argon into the melt. The proportions of aluminium and nitrogen dissolved in the melt should be 0À020- 0À050% and 0À0045-0À0080% respectively. As described, aluminium wire is fed in at the top of the ladle and the gas is injected through a porous refractory, such as brick, at the bottom of the ladle and laterally offset from the feed-in point of the wire so as to ensure stirring of the steel and additives.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4540568 | 1968-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1233672A true GB1233672A (en) | 1971-05-26 |
Family
ID=12718327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1233672D Expired GB1233672A (en) | 1968-07-01 | 1969-06-30 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1933389B2 (en) |
| FR (1) | FR2012107B1 (en) |
| GB (1) | GB1233672A (en) |
| SE (1) | SE354875B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU579256B2 (en) * | 1985-07-29 | 1988-11-17 | Hoogovens Groep Bv | Hard steel sheet manufactured from Al-killed continuous-cast carbon-manganese steel,and a method for the manufacture of such sheet |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1464232A (en) * | 1974-04-26 | 1977-02-09 | Nippon Kokan Kk | Method of making cold-reduced al-killed steel strip for press- forming by continuous casting and continuous annealing process |
| DE3424741A1 (en) * | 1984-07-05 | 1986-01-16 | SKF GmbH, 8720 Schweinfurt | POCKET CAGE FOR ROLLER BEARINGS |
-
1969
- 1969-06-30 GB GB1233672D patent/GB1233672A/en not_active Expired
- 1969-06-30 SE SE924969A patent/SE354875B/xx unknown
- 1969-07-01 FR FR6922206A patent/FR2012107B1/fr not_active Expired
- 1969-07-01 DE DE19691933389 patent/DE1933389B2/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU579256B2 (en) * | 1985-07-29 | 1988-11-17 | Hoogovens Groep Bv | Hard steel sheet manufactured from Al-killed continuous-cast carbon-manganese steel,and a method for the manufacture of such sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2012107B1 (en) | 1974-09-20 |
| FR2012107A1 (en) | 1970-03-13 |
| DE1933389B2 (en) | 1973-08-30 |
| DE1933389A1 (en) | 1972-02-24 |
| SE354875B (en) | 1973-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |