JPS57199537A - Plastic working method - Google Patents
Plastic working methodInfo
- Publication number
- JPS57199537A JPS57199537A JP8528881A JP8528881A JPS57199537A JP S57199537 A JPS57199537 A JP S57199537A JP 8528881 A JP8528881 A JP 8528881A JP 8528881 A JP8528881 A JP 8528881A JP S57199537 A JPS57199537 A JP S57199537A
- Authority
- JP
- Japan
- Prior art keywords
- worked
- temperature
- elongated
- plasticity
- subsequently
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
PURPOSE:To extremely improve working efficiency, by supplying electric power to a material to be worked, and compensating a sudden change of a current, to as to coincide with the timing with the time point when executing a plastic working means. CONSTITUTION:A material to be worked 1 is electrified and heated from a heating electric power supply 6, also a temperature of the material to be worked 1 is measured by a temperature detector, and voltage is controlled by a controlling circuit so as to be raised to a temperature set in advance. Electric resistance is suddenly changed in a point where a structure stage of the material to be worked 1 is changed suddenly, therefore, if this sudden change has been detected, an optimum working temperature, that is to say, a structure state whose plasticity is highest is obtained by raising a temperature of the material to be worked 1 by a prescribed temperature from said temperature. Subsequently, an inclination of plasticity is provided in the axial direction by blowing cooling gas to the material to be worked 1 from nozzles 11 of each air nozzle block 7, 8 and 9. Subsequently, when a chuck 3 is moved in the direction as indicated with an arrow and is elongated in the axial direction, an estimated thin diameter part (c) is elongated longest and becomes a thin diameter (c), and other part is elongated by different elongation percentage in accordance with plasticity, and becomes a tapered rod having a tapered part (b).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8528881A JPS57199537A (en) | 1981-06-03 | 1981-06-03 | Plastic working method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8528881A JPS57199537A (en) | 1981-06-03 | 1981-06-03 | Plastic working method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57199537A true JPS57199537A (en) | 1982-12-07 |
Family
ID=13854374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8528881A Pending JPS57199537A (en) | 1981-06-03 | 1981-06-03 | Plastic working method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57199537A (en) |
-
1981
- 1981-06-03 JP JP8528881A patent/JPS57199537A/en active Pending
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