JPS552761A - Steel material for cold plastic working high in tensile strength, very high in elongation and reduction of area, and manufacture thereof - Google Patents
Steel material for cold plastic working high in tensile strength, very high in elongation and reduction of area, and manufacture thereofInfo
- Publication number
- JPS552761A JPS552761A JP7544678A JP7544678A JPS552761A JP S552761 A JPS552761 A JP S552761A JP 7544678 A JP7544678 A JP 7544678A JP 7544678 A JP7544678 A JP 7544678A JP S552761 A JPS552761 A JP S552761A
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- plastic working
- cold plastic
- reduction
- tensile strength
- 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
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To provide a steel material of high strength and high workability, which is used for cold plastic working to produce coil springs etc., by subjecting a carbon steel material successively to high speed heating, hardening, high speed heating to a specific temp. at which it is kept for a short time, then to cooling.
CONSTITUTION: A steel material contg. C not less than 0.30 % is heated at a high rate by high frequency induction heating etc., and is hardened. It is then heated at a high rate to 300W600°C, and is kept at the temp. for, e.g., 60 secs., thereafter, cooled with water etc. Hereby, crystal grains of the steel material is made very small to produce steel material for cold plastic working, which is high in tensile strength, in reduction of area, and in workability.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7544678A JPS552761A (en) | 1978-06-23 | 1978-06-23 | Steel material for cold plastic working high in tensile strength, very high in elongation and reduction of area, and manufacture thereof |
| DE2917287A DE2917287C2 (en) | 1978-04-28 | 1979-04-27 | Process for the manufacture of coil springs, torsion bars or the like from spring steel wire |
| FR7910943A FR2424324B1 (en) | 1978-04-28 | 1979-04-27 | STEEL FOR COLD PLASTIC SHAPING AND HEAT TREATMENT PROMOTING THIS DEFORMATION |
| GB7914823A GB2023668B (en) | 1978-04-28 | 1979-04-27 | Steel for cold plastic working |
| US06/224,625 US4336081A (en) | 1978-04-28 | 1981-01-12 | Process of preparing steel coil spring |
| US06/368,847 US4407683A (en) | 1978-04-28 | 1982-04-15 | Steel for cold plastic working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7544678A JPS552761A (en) | 1978-06-23 | 1978-06-23 | Steel material for cold plastic working high in tensile strength, very high in elongation and reduction of area, and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS552761A true JPS552761A (en) | 1980-01-10 |
Family
ID=13576482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7544678A Pending JPS552761A (en) | 1978-04-28 | 1978-06-23 | Steel material for cold plastic working high in tensile strength, very high in elongation and reduction of area, and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS552761A (en) |
-
1978
- 1978-06-23 JP JP7544678A patent/JPS552761A/en active Pending
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