JPS5785928A - Manufactue of nonrefined high tensile steel with superior sulfide corrosion cracking resistance - Google Patents
Manufactue of nonrefined high tensile steel with superior sulfide corrosion cracking resistanceInfo
- Publication number
- JPS5785928A JPS5785928A JP15939380A JP15939380A JPS5785928A JP S5785928 A JPS5785928 A JP S5785928A JP 15939380 A JP15939380 A JP 15939380A JP 15939380 A JP15939380 A JP 15939380A JP S5785928 A JPS5785928 A JP S5785928A
- Authority
- JP
- Japan
- Prior art keywords
- nonrefined
- high tensile
- cracking resistance
- corrosion cracking
- tensile steel
- 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
Abstract
PURPOSE: To obtain a nonrefined high tensile steel with superior sulfide corrosion cracking resistance by subjecting a slab having a composition contg. a specified amount of C, Si, Mn, P, S and Al and satisfying a specified equation to a series of treatments, that is, hot rolling accelerated cooling and slow cooling under specified under specified conditions.
CONSTITUTION: A slab having a composition consisting of, by wt., 0.03W0.2% C, 0.05W0.5% Si, 0.6W1.4% Mn, <0.025% P, <0.002% S, 0.01W0.1% Al and the balance Fe with impurities and satisfying the equation is manufactured. In the equation, SC and SMn are the degrees of segregation of the elements, SC= 1.5, and SMn=2.5. The slab is heated and hot rolled so that the reducton ratio at ≤900°C is adjusted to ≥30%. It is acceleratedly cooled from 850W700°C to 650W550°C at 3W20°C/sec cooling rate and slowly cooled to 200°C at 1W10°C/sec cooling rate after stopping the accelerated cooling.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15939380A JPS5785928A (en) | 1980-11-14 | 1980-11-14 | Manufactue of nonrefined high tensile steel with superior sulfide corrosion cracking resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15939380A JPS5785928A (en) | 1980-11-14 | 1980-11-14 | Manufactue of nonrefined high tensile steel with superior sulfide corrosion cracking resistance |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5785928A true JPS5785928A (en) | 1982-05-28 |
JPS6155570B2 JPS6155570B2 (en) | 1986-11-28 |
Family
ID=15692795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15939380A Granted JPS5785928A (en) | 1980-11-14 | 1980-11-14 | Manufactue of nonrefined high tensile steel with superior sulfide corrosion cracking resistance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5785928A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57131318A (en) * | 1981-02-04 | 1982-08-14 | Nippon Kokan Kk <Nkk> | Production of high tensile steel of superior sulfide corrosion resistance |
JPS6033310A (en) * | 1983-07-30 | 1985-02-20 | Nippon Steel Corp | Manufacture of steel plate efficient in hydrogen induced crack resistance and sulfide stress corrosion crack resistance |
JPH05132715A (en) * | 1991-11-12 | 1993-05-28 | Sumitomo Metal Ind Ltd | Manufacture of steel excellent in fatigue crack progressing property in wet hydrogen sulfide environment |
-
1980
- 1980-11-14 JP JP15939380A patent/JPS5785928A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57131318A (en) * | 1981-02-04 | 1982-08-14 | Nippon Kokan Kk <Nkk> | Production of high tensile steel of superior sulfide corrosion resistance |
JPH0310688B2 (en) * | 1981-02-04 | 1991-02-14 | Nippon Kokan Kk | |
JPS6033310A (en) * | 1983-07-30 | 1985-02-20 | Nippon Steel Corp | Manufacture of steel plate efficient in hydrogen induced crack resistance and sulfide stress corrosion crack resistance |
JPS631369B2 (en) * | 1983-07-30 | 1988-01-12 | Nippon Steel Corp | |
JPH05132715A (en) * | 1991-11-12 | 1993-05-28 | Sumitomo Metal Ind Ltd | Manufacture of steel excellent in fatigue crack progressing property in wet hydrogen sulfide environment |
Also Published As
Publication number | Publication date |
---|---|
JPS6155570B2 (en) | 1986-11-28 |
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