JPS5524935A - Manufacture of high tensile hot rolled steel plate having excellent low-temperature toughness - Google Patents
Manufacture of high tensile hot rolled steel plate having excellent low-temperature toughnessInfo
- Publication number
- JPS5524935A JPS5524935A JP9661278A JP9661278A JPS5524935A JP S5524935 A JPS5524935 A JP S5524935A JP 9661278 A JP9661278 A JP 9661278A JP 9661278 A JP9661278 A JP 9661278A JP S5524935 A JPS5524935 A JP S5524935A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- temperature toughness
- rolling
- rolled steel
- manufacture
- 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.)
- Granted
Links
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To raise the low-temperature toughness of rolled steel plate by giving a temperature-lowing time of steel plate during rough rolling or between rough rolling and finishing rolling in the rolling of steel slab containing a specific amount of Ti.
CONSTITUTION: A steel slab, containing 0.03 to 0.30% C, <0.60% Si, 0.50 to 2.00% Mn, <0.03% P, <0.20% S, 0.01 to 0.10% Nb, 0.01 to 0.10% Ti, and 0.003 to 0.06% sol. Al, together with one or two or more of <1.0% Cu, <1.0% Ni, <1.0% Cr, <0.5% Mo, and 0.01 to 0.15% V, is heated at 1200°C or more for soaking. After a rough rolling of a draft of 30% or more per one pass at 1100 to 1000°C, finishing rolling is made at a temperature below 900°C with a 30% or more cumulative draft at an interval of 10 to 300 sec. expectant periods. TiN prevents the coarsening of austenite grains and the precipitation of TiC suppresses the growth of grains, raising the low-temperature toughness of steel.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9661278A JPS5524935A (en) | 1978-08-10 | 1978-08-10 | Manufacture of high tensile hot rolled steel plate having excellent low-temperature toughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9661278A JPS5524935A (en) | 1978-08-10 | 1978-08-10 | Manufacture of high tensile hot rolled steel plate having excellent low-temperature toughness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5524935A true JPS5524935A (en) | 1980-02-22 |
| JPS5738653B2 JPS5738653B2 (en) | 1982-08-17 |
Family
ID=14169674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9661278A Granted JPS5524935A (en) | 1978-08-10 | 1978-08-10 | Manufacture of high tensile hot rolled steel plate having excellent low-temperature toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5524935A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61560A (en) * | 1984-06-12 | 1986-01-06 | Nippon Steel Corp | Steel having superior toughness at welded joint |
| US5133205A (en) * | 1990-11-13 | 1992-07-28 | Mannesmann Aktiengesellschaft | System and process for forming thin flat hot rolled steel strip |
| CN102650018A (en) * | 2012-05-29 | 2012-08-29 | 江苏省沙钢钢铁研究院有限公司 | Seawater corrosion resistant steel plate and production method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818436B (en) * | 2015-04-21 | 2016-09-28 | 舞阳钢铁有限责任公司 | Surrender 620MPa level hydroelectric project hot rolled steel plate and production method thereof |
-
1978
- 1978-08-10 JP JP9661278A patent/JPS5524935A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61560A (en) * | 1984-06-12 | 1986-01-06 | Nippon Steel Corp | Steel having superior toughness at welded joint |
| US5133205A (en) * | 1990-11-13 | 1992-07-28 | Mannesmann Aktiengesellschaft | System and process for forming thin flat hot rolled steel strip |
| CN102650018A (en) * | 2012-05-29 | 2012-08-29 | 江苏省沙钢钢铁研究院有限公司 | Seawater corrosion resistant steel plate and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5738653B2 (en) | 1982-08-17 |
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