JPS57126916A - Production of high-tensile strength steel sheet excellent in workability and weldability - Google Patents
Production of high-tensile strength steel sheet excellent in workability and weldabilityInfo
- Publication number
- JPS57126916A JPS57126916A JP1232081A JP1232081A JPS57126916A JP S57126916 A JPS57126916 A JP S57126916A JP 1232081 A JP1232081 A JP 1232081A JP 1232081 A JP1232081 A JP 1232081A JP S57126916 A JPS57126916 A JP S57126916A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- rolling
- steel sheet
- weldability
- workability
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
Abstract
PURPOSE:To produce a high-tensile strength steel sheet excellent in workability and weldability, by adding specified elements to a low-carbon steel, finish-rolling the steel in a specified temperature range, and then quenching and optionally annealing the steel. CONSTITUTION:A steel slab containing 0.02-0.10% C, 0.05-0.40% Si, 0.50- 3.00% Mn, and 0.005-0.10% sol. Al as basic components, and one or more of 0.005-0.050% Nb, 0.01-0.10%V and 0.005-0.10% Ti and optionally one or more of 0.05-1.00% Mo, 0.05-1.00% Cr and 0.10-1.00% Ni is rolled into a sheet. In this case, the upper limit of a rolling temperature is controlled at a level just above its Ar3 transition point, while the lower limit is controlled at a level where a ferrite rate, directly precipitated from an austenite phase having a work-strain during rolling, is at 40% or less. After completion of rolling, the steel sheet is quenched from a temperature range where a ferrite rate will be 50-90%, and then optionally tempered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1232081A JPS57126916A (en) | 1981-01-29 | 1981-01-29 | Production of high-tensile strength steel sheet excellent in workability and weldability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1232081A JPS57126916A (en) | 1981-01-29 | 1981-01-29 | Production of high-tensile strength steel sheet excellent in workability and weldability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57126916A true JPS57126916A (en) | 1982-08-06 |
| JPH0116888B2 JPH0116888B2 (en) | 1989-03-28 |
Family
ID=11802014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1232081A Granted JPS57126916A (en) | 1981-01-29 | 1981-01-29 | Production of high-tensile strength steel sheet excellent in workability and weldability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57126916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007231319A (en) * | 2006-02-28 | 2007-09-13 | Jfe Steel Kk | Non-heat-treated high-tensile strength steel plate and its production method |
| CN109500099A (en) * | 2018-09-27 | 2019-03-22 | 东南大学 | The experimental method that a kind of pair of mild steel DSIT rolling mill practice optimizes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5541927A (en) * | 1978-09-16 | 1980-03-25 | Kobe Steel Ltd | Production of high toughness, high tensile steel excelling in processability |
| JPS5544590A (en) * | 1978-09-26 | 1980-03-28 | Kawasaki Steel Corp | Production of high tensile thin steel plate of superior cold workability |
| JPS57114613A (en) * | 1980-12-30 | 1982-07-16 | Kawasaki Steel Corp | Production of high tensile steel for welded construction |
-
1981
- 1981-01-29 JP JP1232081A patent/JPS57126916A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5541927A (en) * | 1978-09-16 | 1980-03-25 | Kobe Steel Ltd | Production of high toughness, high tensile steel excelling in processability |
| JPS5544590A (en) * | 1978-09-26 | 1980-03-28 | Kawasaki Steel Corp | Production of high tensile thin steel plate of superior cold workability |
| JPS57114613A (en) * | 1980-12-30 | 1982-07-16 | Kawasaki Steel Corp | Production of high tensile steel for welded construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007231319A (en) * | 2006-02-28 | 2007-09-13 | Jfe Steel Kk | Non-heat-treated high-tensile strength steel plate and its production method |
| CN109500099A (en) * | 2018-09-27 | 2019-03-22 | 东南大学 | The experimental method that a kind of pair of mild steel DSIT rolling mill practice optimizes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0116888B2 (en) | 1989-03-28 |
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