JPS5589902A - Arm pipe and its manufacture - Google Patents
Arm pipe and its manufactureInfo
- Publication number
- JPS5589902A JPS5589902A JP16122578A JP16122578A JPS5589902A JP S5589902 A JPS5589902 A JP S5589902A JP 16122578 A JP16122578 A JP 16122578A JP 16122578 A JP16122578 A JP 16122578A JP S5589902 A JPS5589902 A JP S5589902A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- graphite powder
- rigidity
- arm pipe
- plate
- 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
Abstract
PURPOSE: To obtain the arm pipe light in weight, high in rigidity, and of high performance, by kneading resin and graphite powder in mixture and molding the material orientating the graphite powder in pipe shape, then carbonizing or graphiting the molding.
CONSTITUTION: After heating and kneading 30% of polyvinylchloride and 70% of graphite powder below 20μ in average particle diameter, for example, the plate 3 in which the graphite powder 2 is oriented in the resin 1 in parallel with the plane of the flat plate 3 is made with rolling. The thickness of the flat plate 3 is determined in matching with the thickness of the arm pipe 5. Next, the plate 3 is rounded in matching with the diameter of the pipe 5, and the joint 4 is bonded with heating press or bonding agent. The temperature of the pipe 5 is increased to 250°C under oxidized atmosphere, the pipe 5 is sintered in preparatory, and carbonized at 1200°C under non-oxidized atmosphere or vacuum to increase the rigidity to about 4 times before the carbonization. Further, it is graphited at 2500°C or more to increase the rigidity to about 1.5 times. Thus, the arm pipe 5 having several times the specific elasticity or more than Al and Ti can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16122578A JPS5589902A (en) | 1978-12-28 | 1978-12-28 | Arm pipe and its manufacture |
US06/063,531 US4261580A (en) | 1978-08-04 | 1979-08-03 | Arm pipe for record player tonearms |
GB7927325A GB2027254B (en) | 1978-08-04 | 1979-08-06 | Tubular arm for record player tonearms |
DE19792933435 DE2933435C2 (en) | 1978-08-18 | 1979-08-17 | Tube-like arm for the tonearms of record players and a method for manufacturing the tube-like arm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16122578A JPS5589902A (en) | 1978-12-28 | 1978-12-28 | Arm pipe and its manufacture |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5589902A true JPS5589902A (en) | 1980-07-08 |
JPS6114563B2 JPS6114563B2 (en) | 1986-04-19 |
Family
ID=15730997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16122578A Granted JPS5589902A (en) | 1978-08-04 | 1978-12-28 | Arm pipe and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5589902A (en) |
-
1978
- 1978-12-28 JP JP16122578A patent/JPS5589902A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6114563B2 (en) | 1986-04-19 |
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