JPS57131309A - Method for controlling content of manganese of molten steel - Google Patents
Method for controlling content of manganese of molten steelInfo
- Publication number
- JPS57131309A JPS57131309A JP1544181A JP1544181A JPS57131309A JP S57131309 A JPS57131309 A JP S57131309A JP 1544181 A JP1544181 A JP 1544181A JP 1544181 A JP1544181 A JP 1544181A JP S57131309 A JPS57131309 A JP S57131309A
- Authority
- JP
- Japan
- Prior art keywords
- blowing
- amts
- amt
- end point
- molten steel
- 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
- C21C5/32—Blowing from above
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
PURPOSE:To calculate the amt. of Mn in molten steel with high accuracy during blowing and to expedite its regulation by estimating the end point amt. of Mn from the mathematical expression corresponding the rate of de-Mn and the amts. of Mn and C in the steel and the direct measurement of the amts. of Mn and C in the steel at the end period of blowing. CONSTITUTION:The rate of de-Mn at the end period of blowing of converter operations is expressed by the mathematical expression wherein the amts. of Mn and C of molten steel (hereinafter omitted) are used as variables. The estimation equation for determining the amt. of Mn at the end point of blowing is beforehand obtained in accordance with said expression and the actual data including at least the amts. of Mn and C obtained through measurement with a sublance at the point of time before a suitable time from the end point of blowing and the amts. of Mn and C at the end point of blowing. At every blowing, the amts. of Mn and C obtained through the measurement with a sublance at the point of time before a suitable time from the end point of blowing and the target value of the amt. of C at the end point of blowing are at least given to said estimation equation, and the amt. of Mn at the end point of blowing is estimated. This estimated value and the same target value are compared, and a material contg. Mn of the amt. necessary for making these coincident is charged to the molten steel till the end of blowing or after the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1544181A JPS57131309A (en) | 1981-02-03 | 1981-02-03 | Method for controlling content of manganese of molten steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1544181A JPS57131309A (en) | 1981-02-03 | 1981-02-03 | Method for controlling content of manganese of molten steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57131309A true JPS57131309A (en) | 1982-08-14 |
Family
ID=11888886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1544181A Pending JPS57131309A (en) | 1981-02-03 | 1981-02-03 | Method for controlling content of manganese of molten steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57131309A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593852A (en) * | 1983-12-29 | 1986-06-10 | Nihon Radiator Co., Ltd. | Air conditioner for automobile |
| JPH0310012A (en) * | 1989-06-07 | 1991-01-17 | Nippon Steel Corp | Steelmaking method in converter |
| JPH0310014A (en) * | 1989-06-08 | 1991-01-17 | Nippon Steel Corp | Method for controlling end point in secondary refining |
| JPH0361309A (en) * | 1989-07-28 | 1991-03-18 | Nippon Steel Corp | Method for controlling end point in molten iron pre-treating process |
-
1981
- 1981-02-03 JP JP1544181A patent/JPS57131309A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593852A (en) * | 1983-12-29 | 1986-06-10 | Nihon Radiator Co., Ltd. | Air conditioner for automobile |
| JPH0310012A (en) * | 1989-06-07 | 1991-01-17 | Nippon Steel Corp | Steelmaking method in converter |
| JPH0310014A (en) * | 1989-06-08 | 1991-01-17 | Nippon Steel Corp | Method for controlling end point in secondary refining |
| JPH0361309A (en) * | 1989-07-28 | 1991-03-18 | Nippon Steel Corp | Method for controlling end point in molten iron pre-treating process |
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