JPS5750248A - Production of segregation-free killed steel ingot - Google Patents
Production of segregation-free killed steel ingotInfo
- Publication number
- JPS5750248A JPS5750248A JP12527380A JP12527380A JPS5750248A JP S5750248 A JPS5750248 A JP S5750248A JP 12527380 A JP12527380 A JP 12527380A JP 12527380 A JP12527380 A JP 12527380A JP S5750248 A JPS5750248 A JP S5750248A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- equation
- gaseous
- temp
- pieces
- 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
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE: To control the rate of solidification and obtain a segregation free killed steel ingot by casting molten steel at high temps., then blowng granular steel pieces of limited components together with gaseous Ar at specific weight ratios.
CONSTITUTION: Molten steel is cast at temps. higher by ≥5°C than a solidification initiation temp. in a mold. Next, the granular steel pieces of ≤1mm grain sizes having the components of the component type A of Table 1 are blown together with gaseous Ar at the ratio of the equation I. In the equation I, α is the flatness of a mold, D is the average thickness mm of a steel ingot and K is a constant which is 10W20. Further, the granular steel pieces of ≤1mm grain sizes having the components of the component type B of the Table 1 are blown together with gaseous Ar at the ratio of the equation II. The α, WD, K in the equation II are the same as those of the above-mentioned equation I. The second blowing of the steel pieces may be omitted if the temp. T in the head part of the molten steel at the second blowing of the steel pieces is T≤Tm+5°C (where Tm is a liquid phase temp.).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12527380A JPS5750248A (en) | 1980-09-11 | 1980-09-11 | Production of segregation-free killed steel ingot |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12527380A JPS5750248A (en) | 1980-09-11 | 1980-09-11 | Production of segregation-free killed steel ingot |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5750248A true JPS5750248A (en) | 1982-03-24 |
Family
ID=14905987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12527380A Pending JPS5750248A (en) | 1980-09-11 | 1980-09-11 | Production of segregation-free killed steel ingot |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5750248A (en) |
-
1980
- 1980-09-11 JP JP12527380A patent/JPS5750248A/en active Pending
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