JPS5650777A - Manufacture of longitudinally short steel ingot - Google Patents
Manufacture of longitudinally short steel ingotInfo
- Publication number
- JPS5650777A JPS5650777A JP12505579A JP12505579A JPS5650777A JP S5650777 A JPS5650777 A JP S5650777A JP 12505579 A JP12505579 A JP 12505579A JP 12505579 A JP12505579 A JP 12505579A JP S5650777 A JPS5650777 A JP S5650777A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molding board
- heat insulator
- weight
- poured
- 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
Abstract
PURPOSE: To manufacture a fixed longitudinally short steel ingot without entailing a molding board crack by covering the inside wall of a mold with a heat insulator except a ring-shaped lip part and by specifying the ratios of molding board thickness and molding board weight to poured steel weight.
CONSTITUTION: On molding board 1, flat mold 2 is mounted and the inside wall of it is covered with heat insulator 5 except ring-shaped lip part 3 at the inside of the bottom of mold 2. The thickness of molding board 2 should be not less than 350mm, and ratio W1/W2 of molding board weight W1 to poured steeel weight W2 not less than 0.7. Melted steel 4 to be poured into mold 2 is solidified radpidly by molding board 2 and ring-shaped lip part 3, minimizing the leakage of melted metal from the bottom of mold 2. Because of heat insulator 5, solidification from the side wall of mold 2 is prevented and because of heat insulator 6 placed over melted metal 4, that from the top of the melted metal is eliminated, attaining unidirectional solidification from the bottom of mold 2. Thus, the cracking of molding board 1 is prevented and the internal quality of the longitudinally short steel ingot is improved.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12505579A JPS5650777A (en) | 1979-09-28 | 1979-09-28 | Manufacture of longitudinally short steel ingot |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12505579A JPS5650777A (en) | 1979-09-28 | 1979-09-28 | Manufacture of longitudinally short steel ingot |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5650777A true JPS5650777A (en) | 1981-05-08 |
Family
ID=14900698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12505579A Pending JPS5650777A (en) | 1979-09-28 | 1979-09-28 | Manufacture of longitudinally short steel ingot |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5650777A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5319290A (en) * | 1976-08-04 | 1978-02-22 | Yamato Scale Co Ltd | Carrier for conveyor |
-
1979
- 1979-09-28 JP JP12505579A patent/JPS5650777A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5319290A (en) * | 1976-08-04 | 1978-02-22 | Yamato Scale Co Ltd | Carrier for conveyor |
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