JPS5521517A - Manufacture of hot-rolled coil - Google Patents
Manufacture of hot-rolled coilInfo
- Publication number
- JPS5521517A JPS5521517A JP9274278A JP9274278A JPS5521517A JP S5521517 A JPS5521517 A JP S5521517A JP 9274278 A JP9274278 A JP 9274278A JP 9274278 A JP9274278 A JP 9274278A JP S5521517 A JPS5521517 A JP S5521517A
- Authority
- JP
- Japan
- Prior art keywords
- hot
- rolled
- manufacture
- steel
- low alloy
- 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
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To prevent the separation of low alloy steel containing Nb and V when the steel is hot-rolled and coiled, by limiting the reduction in the thickness of the hot-rolled steel in the austenite recrystallization zone.
CONSTITUTION: When the low alloy steel containing Nb and V as indispensable constituents is hot-rolled and coiled, the reduction y (percentage) in the thickness of the hot-rolled steel in the austenite recrystallization zone is limited as y≥975x-7.5 where x denotes the percentage of P of microsegregation part. The preferable composition of the low alloy steel is 0.05 to 0.2% of C, 0.05 to 0.5% of SC, 0.6 to 2% of Mn, 0.005 to 0.08% of Al, 0.03% or less of S, 0.005 to 0.1% of Nb, 0.005 to 0.1% of Nb and the rest of Fe.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9274278A JPS5521517A (en) | 1978-07-28 | 1978-07-28 | Manufacture of hot-rolled coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9274278A JPS5521517A (en) | 1978-07-28 | 1978-07-28 | Manufacture of hot-rolled coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5521517A true JPS5521517A (en) | 1980-02-15 |
Family
ID=14062862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9274278A Pending JPS5521517A (en) | 1978-07-28 | 1978-07-28 | Manufacture of hot-rolled coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5521517A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60187663A (en) * | 1984-03-01 | 1985-09-25 | Nippon Steel Corp | Electric welded oil well pipe having low hardness and high yield strength and its production |
| JPS60187664A (en) * | 1984-03-01 | 1985-09-25 | Nippon Steel Corp | Electric welded oil well pipe having low hardness and high yield strength and its production |
| JPS61143385U (en) * | 1985-02-25 | 1986-09-04 | ||
| RU2505619C1 (en) * | 2012-11-23 | 2014-01-27 | Открытое акционерное общество "Научно-производственное объединение "Прибор" | Low-carbon alloy steel |
-
1978
- 1978-07-28 JP JP9274278A patent/JPS5521517A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60187663A (en) * | 1984-03-01 | 1985-09-25 | Nippon Steel Corp | Electric welded oil well pipe having low hardness and high yield strength and its production |
| JPS60187664A (en) * | 1984-03-01 | 1985-09-25 | Nippon Steel Corp | Electric welded oil well pipe having low hardness and high yield strength and its production |
| JPS61143385U (en) * | 1985-02-25 | 1986-09-04 | ||
| RU2505619C1 (en) * | 2012-11-23 | 2014-01-27 | Открытое акционерное общество "Научно-производственное объединение "Прибор" | Low-carbon alloy steel |
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