JPS5726125A - Production of hot rolled steel plate of superior longitudinal crack resistance having low yield ratio and high tensile strength - Google Patents
Production of hot rolled steel plate of superior longitudinal crack resistance having low yield ratio and high tensile strengthInfo
- Publication number
- JPS5726125A JPS5726125A JP9981780A JP9981780A JPS5726125A JP S5726125 A JPS5726125 A JP S5726125A JP 9981780 A JP9981780 A JP 9981780A JP 9981780 A JP9981780 A JP 9981780A JP S5726125 A JPS5726125 A JP S5726125A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- high tensile
- crack resistance
- yield ratio
- contg
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
PURPOSE:To improve the longitudinal crack resistance of a steel plate by hot rolling and heat treating a slab for a low yield ratio high tensile hot-rolled steel plate contg. specific elements under specific temp. conditions thereby working the same to a steel plate. CONSTITUTION:A steel slab contg. 0.03-0.15% C, 0.03-0.80% Si, 1-2% Mn, <0.020% P, <0.010% S, 0.010-0.10% solAl, <0.030% As+Sn+Sb, contg. >=1 kind of V, Ti, Zr, Nb, B at 0.001-0.15% or contg. >=1 kind of Cr, Ni, Mo, Cu at 0.01-1.50% is hot-rolled and is finish-rolled at temps. above the Ar3 point. This is coiled below the Ar1 point, and the coil is heated to 750-900 deg.C temps. in a heat treatment furnace, after which it is cooled down to 600-250 deg.C at 5-50 deg.C/ sec cooling rates from said temps. The resultant long yield ratio high tensile hot- rolled steel plate has superior longitudinal crack resistance and is suited as a material for automotive bodies.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9981780A JPS5726125A (en) | 1980-07-23 | 1980-07-23 | Production of hot rolled steel plate of superior longitudinal crack resistance having low yield ratio and high tensile strength |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9981780A JPS5726125A (en) | 1980-07-23 | 1980-07-23 | Production of hot rolled steel plate of superior longitudinal crack resistance having low yield ratio and high tensile strength |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5726125A true JPS5726125A (en) | 1982-02-12 |
JPS618128B2 JPS618128B2 (en) | 1986-03-12 |
Family
ID=14257388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9981780A Granted JPS5726125A (en) | 1980-07-23 | 1980-07-23 | Production of hot rolled steel plate of superior longitudinal crack resistance having low yield ratio and high tensile strength |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5726125A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57145929A (en) * | 1981-03-06 | 1982-09-09 | Nippon Kokan Kk <Nkk> | Production of hot-rolled high-tensile steel plate of high workability |
JP2006342387A (en) * | 2005-06-08 | 2006-12-21 | Sumitomo Metal Ind Ltd | High-strength hot-rolled steel sheet and its manufacturing method |
CN103667911A (en) * | 2013-12-13 | 2014-03-26 | 莱芜钢铁集团有限公司 | Low yield ratio X100 high-grade steel pipeline steel hot-rolled steel plate and manufacturing method thereof |
CN109825766A (en) * | 2019-02-28 | 2019-05-31 | 邯郸钢铁集团有限责任公司 | A kind of 460MPa high-strength steel reducing lobe defect and its production method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106381453B (en) * | 2016-09-22 | 2018-12-07 | 三明市毅君机械铸造有限公司 | A kind of cast steel components and its production technology for nuclear power unit |
-
1980
- 1980-07-23 JP JP9981780A patent/JPS5726125A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57145929A (en) * | 1981-03-06 | 1982-09-09 | Nippon Kokan Kk <Nkk> | Production of hot-rolled high-tensile steel plate of high workability |
JPS623212B2 (en) * | 1981-03-06 | 1987-01-23 | Nippon Kokan Kk | |
JP2006342387A (en) * | 2005-06-08 | 2006-12-21 | Sumitomo Metal Ind Ltd | High-strength hot-rolled steel sheet and its manufacturing method |
JP4539447B2 (en) * | 2005-06-08 | 2010-09-08 | 住友金属工業株式会社 | High strength hot rolled steel sheet and method for producing the same |
CN103667911A (en) * | 2013-12-13 | 2014-03-26 | 莱芜钢铁集团有限公司 | Low yield ratio X100 high-grade steel pipeline steel hot-rolled steel plate and manufacturing method thereof |
CN103667911B (en) * | 2013-12-13 | 2015-12-02 | 莱芜钢铁集团有限公司 | Low yield strength ratio X100 Hi-grade steel pipeline steel hot rolled steel plate and manufacture method thereof |
CN109825766A (en) * | 2019-02-28 | 2019-05-31 | 邯郸钢铁集团有限责任公司 | A kind of 460MPa high-strength steel reducing lobe defect and its production method |
Also Published As
Publication number | Publication date |
---|---|
JPS618128B2 (en) | 1986-03-12 |
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