JPS56119758A - Special steel strip with superior punchability and its manufacture - Google Patents
Special steel strip with superior punchability and its manufactureInfo
- Publication number
- JPS56119758A JPS56119758A JP2436680A JP2436680A JPS56119758A JP S56119758 A JPS56119758 A JP S56119758A JP 2436680 A JP2436680 A JP 2436680A JP 2436680 A JP2436680 A JP 2436680A JP S56119758 A JPS56119758 A JP S56119758A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- manufacture
- hot rolled
- annealing
- steel strip
- 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)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
PURPOSE: To manufacture the titled steel strip causing a low crashing sound and little wear of dies by punching by converting carbide in a hot rolled steel having a specified composition contg. C, Mn, sol. Al and Si into spindle-shaped or nodular graphite in an annealing process.
CONSTITUTION: A steel consisting of, by weight, 0.5W1.2% C, ≤0.50% Mn, 0.020W0.060% soln. Al, (1.16-5/7×%C)W(1.63-6/7×%C) Si and the balance Fe and inevitable impurities is hot rolled, and this hot rolled steel is subjected to cold rolling and annealing twice or more to convert carbide in the steel into spindle- shaped or nodular graphite in the annealing process. The dispersion density of the graphite in the steel is properly adjusted by controlling the annealing temp. after cold rolling.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2436680A JPS56119758A (en) | 1980-02-28 | 1980-02-28 | Special steel strip with superior punchability and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2436680A JPS56119758A (en) | 1980-02-28 | 1980-02-28 | Special steel strip with superior punchability and its manufacture |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56119758A true JPS56119758A (en) | 1981-09-19 |
JPH0219173B2 JPH0219173B2 (en) | 1990-04-27 |
Family
ID=12136186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2436680A Granted JPS56119758A (en) | 1980-02-28 | 1980-02-28 | Special steel strip with superior punchability and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56119758A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02107742A (en) * | 1988-10-14 | 1990-04-19 | Kawasaki Steel Corp | Steel stock excellent in workability and hardenability |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4838054A (en) * | 1971-09-16 | 1973-06-05 | ||
JPS4967816A (en) * | 1972-11-02 | 1974-07-01 | ||
JPS4967817A (en) * | 1972-11-06 | 1974-07-01 | ||
JPS51120919A (en) * | 1975-04-15 | 1976-10-22 | Sumitomo Metal Ind Ltd | Structural steel with excellent machinability |
JPS5429820A (en) * | 1977-08-10 | 1979-03-06 | Kawasaki Steel Co | Heat rolled band steel for steel pipe having good pipe expandability |
-
1980
- 1980-02-28 JP JP2436680A patent/JPS56119758A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4838054A (en) * | 1971-09-16 | 1973-06-05 | ||
JPS4967816A (en) * | 1972-11-02 | 1974-07-01 | ||
JPS4967817A (en) * | 1972-11-06 | 1974-07-01 | ||
JPS51120919A (en) * | 1975-04-15 | 1976-10-22 | Sumitomo Metal Ind Ltd | Structural steel with excellent machinability |
JPS5429820A (en) * | 1977-08-10 | 1979-03-06 | Kawasaki Steel Co | Heat rolled band steel for steel pipe having good pipe expandability |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02107742A (en) * | 1988-10-14 | 1990-04-19 | Kawasaki Steel Corp | Steel stock excellent in workability and hardenability |
JPH0579743B2 (en) * | 1988-10-14 | 1993-11-04 | Kawasaki Steel Co |
Also Published As
Publication number | Publication date |
---|---|
JPH0219173B2 (en) | 1990-04-27 |
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