JPS648222A - Production of high toughness thick steel plate - Google Patents
Production of high toughness thick steel plateInfo
- Publication number
- JPS648222A JPS648222A JP16138287A JP16138287A JPS648222A JP S648222 A JPS648222 A JP S648222A JP 16138287 A JP16138287 A JP 16138287A JP 16138287 A JP16138287 A JP 16138287A JP S648222 A JPS648222 A JP S648222A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- rolling
- steel plate
- production
- thick 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
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE:To make the crystal grains of ferrite finer and to improve toughness by starting the rolling of a steel having a specific compsn. at a specific temp. or below and specifying the draft and time per pass and the resting or holding time after the end of rolling before accelerated cooling. CONSTITUTION:The steel contg., by weight %, 0.03-0.25 C, 0.01-0.5 Si, 0.5-1.8 Mn, 0.005-0.1 Al, and 0.001-0.010 N, contg. >=1 kinds among respectively <=0.05 Nb, Ti and V, respectively <=0.5 Cu and Mo, <=1.5 Ni, <=1.0 Cr, and <=0.002 B, and consisting of the balance Fe is used. The rolling of this steel is started at <=900 deg.C without cooling the steel after casting or heating the cold ingot to the AC3 point or above. The steel is thus subjected to the rolling at <=10% max. draft and within 15sec longest pass time per pass. The steel plate is rested or held for 100-1,000sec after the end of the rolling and is then subjected to the accelerated cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16138287A JPH0613733B2 (en) | 1987-06-30 | 1987-06-30 | High toughness steel plate manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16138287A JPH0613733B2 (en) | 1987-06-30 | 1987-06-30 | High toughness steel plate manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS648222A true JPS648222A (en) | 1989-01-12 |
| JPH0613733B2 JPH0613733B2 (en) | 1994-02-23 |
Family
ID=15734026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16138287A Expired - Lifetime JPH0613733B2 (en) | 1987-06-30 | 1987-06-30 | High toughness steel plate manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613733B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02175814A (en) * | 1988-12-28 | 1990-07-09 | Kawasaki Steel Corp | Manufacture of thick steel plate for uoe steel tube |
| JP2003105439A (en) * | 2001-10-01 | 2003-04-09 | Kawasaki Steel Corp | Low Yield Ratio Steel for Low Temperature and Method of Manufacturing the Same |
| KR100820115B1 (en) * | 2006-12-07 | 2008-04-10 | 이수호 | Multitap |
-
1987
- 1987-06-30 JP JP16138287A patent/JPH0613733B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02175814A (en) * | 1988-12-28 | 1990-07-09 | Kawasaki Steel Corp | Manufacture of thick steel plate for uoe steel tube |
| JP2003105439A (en) * | 2001-10-01 | 2003-04-09 | Kawasaki Steel Corp | Low Yield Ratio Steel for Low Temperature and Method of Manufacturing the Same |
| KR100820115B1 (en) * | 2006-12-07 | 2008-04-10 | 이수호 | Multitap |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0613733B2 (en) | 1994-02-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080223 Year of fee payment: 14 |