JPS57185917A - Steel making method by converter - Google Patents
Steel making method by converterInfo
- Publication number
- JPS57185917A JPS57185917A JP7122181A JP7122181A JPS57185917A JP S57185917 A JPS57185917 A JP S57185917A JP 7122181 A JP7122181 A JP 7122181A JP 7122181 A JP7122181 A JP 7122181A JP S57185917 A JPS57185917 A JP S57185917A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- blowing
- rate
- oxygen supply
- flow rate
- 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.)
- Pending
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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
-
- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/34—Blowing through the bath
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
PURPOSE:To produce all kinds of steels from extra low carbon steel to middle and high carbon steels with the same converter by setting the flow rate of a bottom blowing gas to an adequate flow rate in correspondence to the kind of the steel to be produced and seetting the rate of oxygen supply in correspondence to the target carbon content in a steel bath at the end of blowing. CONSTITUTION:In the stage of converter refining by top and bottom blowing, the flow rate of the bottom blowing gas is set at an adequate flow rate in correspondence to the kind of the steel to be produced. In the case of producing middle and high carbon steel of >=0.1% target carbon content in the steel bath at the end of blowing, the blowing is ended by keeping the rate of oxygen supply on the verge of ending of the blowing higher than the rate of oxygen supply before this. On the other hand, in the case of producing extra low carbon steel of <=0.03% target carbon content of the molten steel at the end of the blowing, the rate of oxygen supply on the verge of ending of the blowng is kept lower than the rate of oxygen supply before this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7122181A JPS57185917A (en) | 1981-05-12 | 1981-05-12 | Steel making method by converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7122181A JPS57185917A (en) | 1981-05-12 | 1981-05-12 | Steel making method by converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57185917A true JPS57185917A (en) | 1982-11-16 |
Family
ID=13454395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7122181A Pending JPS57185917A (en) | 1981-05-12 | 1981-05-12 | Steel making method by converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57185917A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55161014A (en) * | 1979-05-31 | 1980-12-15 | Sumitomo Metal Ind Ltd | Refining method for steel |
| JPS569313A (en) * | 1979-07-03 | 1981-01-30 | Sumitomo Metal Ind Ltd | Manufacture of very-low carbon steel |
-
1981
- 1981-05-12 JP JP7122181A patent/JPS57185917A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55161014A (en) * | 1979-05-31 | 1980-12-15 | Sumitomo Metal Ind Ltd | Refining method for steel |
| JPS569313A (en) * | 1979-07-03 | 1981-01-30 | Sumitomo Metal Ind Ltd | Manufacture of very-low carbon steel |
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