JPS57202919A - Plastic working method - Google Patents
Plastic working methodInfo
- Publication number
- JPS57202919A JPS57202919A JP8715881A JP8715881A JPS57202919A JP S57202919 A JPS57202919 A JP S57202919A JP 8715881 A JP8715881 A JP 8715881A JP 8715881 A JP8715881 A JP 8715881A JP S57202919 A JPS57202919 A JP S57202919A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- supersonic
- plasticity
- axial direction
- change
- 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 improve working efficiency for various kinds of materials to be worked, by measuring the change of supersonic characteristics of the material, and performing plastic working at the temp. which exceeds the temp. measured at that point of time. CONSTITUTION:A material 1 to be worked is heated by applying electric current from an electric-heating source 6, and together, the change of supersonic characteristics accompanying the temp. rise is measured by a supersonic flaw detector 13. When the sudden change of supersonic characteristics caused by the sudden change of a structural state of the material 1 is detected, a prescribed heat energy is given by the source 6 to rise the temp. of it by a prescribed temp., by setting the temp. detected, at that point of time with a temp. detector 12, as a standard temp. The material 1 is, then, made to be in the optimum working temp. i.e. in a structural state of the highest degree of plasticity. Then cooling gas is blown against the material 1 from each air nozzle to make the material 1 possess a temp. pattern through its axial direction in order to make the material 1 possess a gradient in the degree of plasticity. Next, respective parts of the material 1 are stretched through the axial direction in different elongation ratios respectively, corresponding to a small diametral part and to the degrees of plasticity at respective parts, so as to form a taper rod of which diameter changes in its axial direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8715881A JPS57202919A (en) | 1981-06-05 | 1981-06-05 | Plastic working method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8715881A JPS57202919A (en) | 1981-06-05 | 1981-06-05 | Plastic working method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57202919A true JPS57202919A (en) | 1982-12-13 |
Family
ID=13907174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8715881A Pending JPS57202919A (en) | 1981-06-05 | 1981-06-05 | Plastic working method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57202919A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6372423A (en) * | 1986-09-16 | 1988-04-02 | Kobe Steel Ltd | Working method and device for metallic wire rod |
US6463779B1 (en) * | 1999-06-01 | 2002-10-15 | Mehmet Terziakin | Instant heating process with electric current application to the workpiece for high strength metal forming |
US6718809B1 (en) * | 1998-01-10 | 2004-04-13 | General Electric Company | Method for processing billets out of metals and alloys and the article |
-
1981
- 1981-06-05 JP JP8715881A patent/JPS57202919A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6372423A (en) * | 1986-09-16 | 1988-04-02 | Kobe Steel Ltd | Working method and device for metallic wire rod |
US6718809B1 (en) * | 1998-01-10 | 2004-04-13 | General Electric Company | Method for processing billets out of metals and alloys and the article |
US6826940B2 (en) * | 1998-01-10 | 2004-12-07 | General Electric Company | Method of metal and alloy billet treatment |
US6463779B1 (en) * | 1999-06-01 | 2002-10-15 | Mehmet Terziakin | Instant heating process with electric current application to the workpiece for high strength metal forming |
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