JPS5779117A - Production of ultrathick temper type high tensile steel - Google Patents
Production of ultrathick temper type high tensile steelInfo
- Publication number
- JPS5779117A JPS5779117A JP15513280A JP15513280A JPS5779117A JP S5779117 A JPS5779117 A JP S5779117A JP 15513280 A JP15513280 A JP 15513280A JP 15513280 A JP15513280 A JP 15513280A JP S5779117 A JPS5779117 A JP S5779117A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- subjected
- type high
- high tensile
- tempering
- 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
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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/02—Hardening by precipitation
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)
Abstract
PURPOSE:To produce a titled steel under low carbon equiv. and low Ni by subjecting the specific composition steel contg. C, Si, Mn, Ni, Cr, Mo, V in accordance with product thickness and further contg. B, Al, Nb to hardening and tempering after heat treatment. CONSTITUTION:The respective components of <=0.20% C, <=0.50% Si, <=2.0% Mn, <=1.0% Ni, <=0.7% Cr, <=0.5% Mo, <=0.10% V are contained within the range of the equation I (t: plate thickness mm.) in accordance with product thicknesses. Further, the steel contained with 0.0005-0.0040 B, 0.03-0.10% acid sol Al, 0.01-0.07% Nb and consisting of the balance Fe and unavoidable impurities is subjected to the following treatment: This steel is cooled down to below the Ar1 point after hot working. Thereafter, it is subjected to one time of the pretreatment wherein it is reheated to the austenite region below, 1,000 deg.C then cooled down to below the Ar1 point. Next, it is subjected to ordinary hardening and tempering, whereby the ultra thick temper type high tensile steel of 58kgf/mm.<2>-70kg/mm.<2> tensile strength and >=100mm. plate thickness is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15513280A JPS5779117A (en) | 1980-11-06 | 1980-11-06 | Production of ultrathick temper type high tensile steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15513280A JPS5779117A (en) | 1980-11-06 | 1980-11-06 | Production of ultrathick temper type high tensile steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5779117A true JPS5779117A (en) | 1982-05-18 |
Family
ID=15599247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15513280A Pending JPS5779117A (en) | 1980-11-06 | 1980-11-06 | Production of ultrathick temper type high tensile steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5779117A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6187818A (en) * | 1984-10-03 | 1986-05-06 | Nippon Steel Corp | Manufacture of ultrathick steel material of high strength low alloy steel |
| JPS61136622A (en) * | 1984-12-04 | 1986-06-24 | Nippon Steel Corp | Manufacture of high strength low alloy ultrathick steel material |
| WO2013051231A1 (en) * | 2011-10-03 | 2013-04-11 | Ｊｆｅスチール株式会社 | High-tensile steel plate giving welding heat-affected zone with excellent low-temperature toughness, and process for producing same |
-
1980
- 1980-11-06 JP JP15513280A patent/JPS5779117A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6187818A (en) * | 1984-10-03 | 1986-05-06 | Nippon Steel Corp | Manufacture of ultrathick steel material of high strength low alloy steel |
| JPH0247526B2 (en) * | 1984-10-03 | 1990-10-22 | Nippon Steel Corp | |
| JPS61136622A (en) * | 1984-12-04 | 1986-06-24 | Nippon Steel Corp | Manufacture of high strength low alloy ultrathick steel material |
| WO2013051231A1 (en) * | 2011-10-03 | 2013-04-11 | Ｊｆｅスチール株式会社 | High-tensile steel plate giving welding heat-affected zone with excellent low-temperature toughness, and process for producing same |
| JPWO2013051231A1 (en) * | 2011-10-03 | 2015-03-30 | Ｊｆｅスチール株式会社 | High tensile strength steel sheet with excellent low temperature toughness of weld heat affected zone and method for producing the same |
| US9945015B2 (en) | 2011-10-03 | 2018-04-17 | Jfe Steel Corporation | High-tensile steel plate giving welding heat-affected zone with excellent low-temperature toughness, and process for producing same |
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