JPS558454A - Manufacture of v-type high toughness high tension steel of good weldability - Google Patents
Manufacture of v-type high toughness high tension steel of good weldabilityInfo
- Publication number
- JPS558454A JPS558454A JP8072678A JP8072678A JPS558454A JP S558454 A JPS558454 A JP S558454A JP 8072678 A JP8072678 A JP 8072678A JP 8072678 A JP8072678 A JP 8072678A JP S558454 A JPS558454 A JP S558454A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- rolling
- manufacture
- rolled
- balance
- 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 manufacture titled steel good in the low temperature toughness at low cost, by preparing the steel composed of respective specified amount of C, Si, Mn, and V, and the balance of Fe and inevitable impurities, at the γ grain fineness number more than three, and by executing rolling and air cooling under the heating- rolling condition and the limited draft percentage within the transformation region.
CONSTITUTION: The steel, composed of 0.05W0.2% C, Si ≤0.7%, 0.5W2% Mn, 0.005W0.07% V, and the balance of Fe and inevitable impurities, is prepared at the γ grain fineness number more than three. Next, this steel is rolled by the draft percentage 30% at the temperature Ar3W900°C; after that, the steel is rolled by the draft percentage 10W60% while the γ→α transformation progresses so far as 5W 60%. Then, this V-type steel is coiled while being air cooled or at the temperature lower than Ar1. This method is available especially for the rolling of the hot strip, the thick plate, etc., and besides, can be applied to the rolling of the steel shape (bar), rod, etc. This steel is applied to the high strength steel sheet, especially the line pipe, the machinery structure, etc., for service in the cold district.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8072678A JPS558454A (en) | 1978-07-03 | 1978-07-03 | Manufacture of v-type high toughness high tension steel of good weldability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8072678A JPS558454A (en) | 1978-07-03 | 1978-07-03 | Manufacture of v-type high toughness high tension steel of good weldability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS558454A true JPS558454A (en) | 1980-01-22 |
Family
ID=13726361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8072678A Pending JPS558454A (en) | 1978-07-03 | 1978-07-03 | Manufacture of v-type high toughness high tension steel of good weldability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS558454A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02254119A (en) * | 1989-03-28 | 1990-10-12 | Nippon Steel Corp | Production of v-added high toughness and high tensile strength steel plate |
| CN105861799A (en) * | 2016-05-31 | 2016-08-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Thick vanadium-containing pipeline steel and production method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5282624A (en) * | 1975-12-30 | 1977-07-11 | Nippon Steel Corp | Preparation of high tensile steel excelling in ductility and toughness |
-
1978
- 1978-07-03 JP JP8072678A patent/JPS558454A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5282624A (en) * | 1975-12-30 | 1977-07-11 | Nippon Steel Corp | Preparation of high tensile steel excelling in ductility and toughness |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02254119A (en) * | 1989-03-28 | 1990-10-12 | Nippon Steel Corp | Production of v-added high toughness and high tensile strength steel plate |
| JPH06104861B2 (en) * | 1989-03-28 | 1994-12-21 | 新日本製鐵株式会社 | Manufacturing method of V added high toughness high strength steel sheet |
| CN105861799A (en) * | 2016-05-31 | 2016-08-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Thick vanadium-containing pipeline steel and production method thereof |
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