JPS5589902A - Arm pipe and its manufacture - Google Patents

Arm pipe and its manufacture

Info

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
Application number
JP16122578A
Other languages
Japanese (ja)
Other versions
JPS6114563B2 (en
Inventor
Nobuhiro Tsukagoshi
Shinichi Yokozeki
Toshikazu Yoshino
Yasuyuki Arai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP16122578A priority Critical patent/JPS5589902A/en
Priority to US06/063,531 priority patent/US4261580A/en
Priority to GB7927325A priority patent/GB2027254B/en
Priority to DE19792933435 priority patent/DE2933435C2/en
Publication of JPS5589902A publication Critical patent/JPS5589902A/en
Publication of JPS6114563B2 publication Critical patent/JPS6114563B2/ja
Granted legal-status Critical Current

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
JP16122578A 1978-08-04 1978-12-28 Arm pipe and its manufacture Granted JPS5589902A (en)

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)

Also Published As

Publication number Publication date
JPS6114563B2 (en) 1986-04-19

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