JPS5711719A - Hydrostatic extruding method - Google Patents
Hydrostatic extruding methodInfo
- Publication number
- JPS5711719A JPS5711719A JP8545980A JP8545980A JPS5711719A JP S5711719 A JPS5711719 A JP S5711719A JP 8545980 A JP8545980 A JP 8545980A JP 8545980 A JP8545980 A JP 8545980A JP S5711719 A JPS5711719 A JP S5711719A
- Authority
- JP
- Japan
- Prior art keywords
- hardness
- nose
- extrusion
- sectional area
- heat treatment
- 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
- Extrusion Of Metal (AREA)
Abstract
PURPOSE: To safely practice an extrusion work without generating a peak pressure, by changing a condition of an aging heat treatment of a nose material in order to adjust its hardness, in a hyraostatic extruding method for shrinking diameter of a composite billet.
CONSTITUTION: In a composite billet, a coating material 3 is put on outside of a core material 2, and the tip of this coating material 3 is welded to a nose material 4 shaped so as to be fittable to an extrusion die 8. The nose material 4 is made of a Cr-Cu alloy wherein Cr content is limited to about 0.5W1.2%; a heating and hardening treament is applied previously to the nose material 4 by a nonoxidizing furnace at temperatures 950W1,050°C, and then an aging heat treatment for the purpose of a precipitation hardening is applied. The temperature and duration of this treatment are selected correspondingly to a required hardness. The aimed hardness is determine correspondingly to hardness of the coating metal 3 and core material 2, and to a ratio of each sectional area to whole sectional area. By the present method, an ideal extrusion condition C free from generation of a peak pressure is obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8545980A JPS591487B2 (en) | 1980-06-24 | 1980-06-24 | Hydrostatic extrusion method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8545980A JPS591487B2 (en) | 1980-06-24 | 1980-06-24 | Hydrostatic extrusion method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5711719A true JPS5711719A (en) | 1982-01-21 |
JPS591487B2 JPS591487B2 (en) | 1984-01-12 |
Family
ID=13859458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8545980A Expired JPS591487B2 (en) | 1980-06-24 | 1980-06-24 | Hydrostatic extrusion method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS591487B2 (en) |
-
1980
- 1980-06-24 JP JP8545980A patent/JPS591487B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS591487B2 (en) | 1984-01-12 |
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