JPS5773124A - Production of steel material having high breakdown toughness - Google Patents
Production of steel material having high breakdown toughnessInfo
- Publication number
- JPS5773124A JPS5773124A JP14972480A JP14972480A JPS5773124A JP S5773124 A JPS5773124 A JP S5773124A JP 14972480 A JP14972480 A JP 14972480A JP 14972480 A JP14972480 A JP 14972480A JP S5773124 A JPS5773124 A JP S5773124A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- steel
- steel material
- contg
- intermediate stage
- 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 eliminate the degrading characteristic in the central part of plate thickness and improve breakdown toughness by hot rolling a steel material ingot cont. prescribed amts. of C, Mn, P, S as basic components under specific conditions.
CONSTITUTION: A steel contg. ≤0.3% C, 0.5W2.5% Mn, ≤0.02% P, and ≤0.01% S as basic components and if necessary, contg. other specific elements is produced. The ingot produced by continuosly casting this steel is heated to rollable temps., after which it is reduced of thickness down to intermediate stage thickness under the conditions wherein the composite pass rolling effect (CIRE) expressed by the equation is kept at ≤0.02. Thence, it is subjected to heat treatment according to the intermediate stage thickness, after which it is hot-rolled down to the final thickness.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14972480A JPS5773124A (en) | 1980-10-25 | 1980-10-25 | Production of steel material having high breakdown toughness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14972480A JPS5773124A (en) | 1980-10-25 | 1980-10-25 | Production of steel material having high breakdown toughness |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5773124A true JPS5773124A (en) | 1982-05-07 |
JPH0219174B2 JPH0219174B2 (en) | 1990-04-27 |
Family
ID=15481421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14972480A Granted JPS5773124A (en) | 1980-10-25 | 1980-10-25 | Production of steel material having high breakdown toughness |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5773124A (en) |
-
1980
- 1980-10-25 JP JP14972480A patent/JPS5773124A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0219174B2 (en) | 1990-04-27 |
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