JPS5711706A - Rolling mill line - Google Patents
Rolling mill lineInfo
- Publication number
- JPS5711706A JPS5711706A JP8539480A JP8539480A JPS5711706A JP S5711706 A JPS5711706 A JP S5711706A JP 8539480 A JP8539480 A JP 8539480A JP 8539480 A JP8539480 A JP 8539480A JP S5711706 A JPS5711706 A JP S5711706A
- Authority
- JP
- Japan
- Prior art keywords
- rolling mill
- rolling
- leveler
- cooling apparatus
- light reducing
- 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
- Metal Rolling (AREA)
Abstract
PURPOSE: To reduce the hardness dispersion in the direction of thickness of a rolled material, by installing a light reducing rolling mill between a hot rolling mill and a cooling apparatus, in a rolling mill line operated for improving the tenacity of steel through a forcible cooling process following to a rolling pass.
CONSTITUTION: A steel billet extracted from a soaking pit is rolled to reduce its thickness by a hot rolling mill 1, and is carried into a cooling apparatus 2 through a leveler 3. A light reducing rolling mill 4, provided with a rolling roll of diameter smaller than that of the main rolling mill 1, is installed in front of the leveler 3. This rolling mill 4 gives a great strain to only the steel surface before entering the cooling apparatus, in order to promote the γ→α transformation by the distortion stress and by fining grains, for preventing generation of such a hardened structure as martensite in the steel surface during the next forcible cooling process. If the said light reducing mill 4 is installed next to the leveler 3, it is more effective because the rolling strain is released and the recrystallization and grain growth are restricted thereby.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8539480A JPS5711706A (en) | 1980-06-24 | 1980-06-24 | Rolling mill line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8539480A JPS5711706A (en) | 1980-06-24 | 1980-06-24 | Rolling mill line |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5711706A true JPS5711706A (en) | 1982-01-21 |
Family
ID=13857547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8539480A Pending JPS5711706A (en) | 1980-06-24 | 1980-06-24 | Rolling mill line |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5711706A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS619918A (en) * | 1984-06-22 | 1986-01-17 | Sumitomo Metal Ind Ltd | Treatment of hot rolled steel stock |
-
1980
- 1980-06-24 JP JP8539480A patent/JPS5711706A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS619918A (en) * | 1984-06-22 | 1986-01-17 | Sumitomo Metal Ind Ltd | Treatment of hot rolled steel stock |
JPS635169B2 (en) * | 1984-06-22 | 1988-02-02 | Sumitomo Kinzoku Kogyo Kk |
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