JPS5766505A - Cantilever pipe for pickup and its manufacture - Google Patents
Cantilever pipe for pickup and its manufactureInfo
- Publication number
- JPS5766505A JPS5766505A JP17615280A JP17615280A JPS5766505A JP S5766505 A JPS5766505 A JP S5766505A JP 17615280 A JP17615280 A JP 17615280A JP 17615280 A JP17615280 A JP 17615280A JP S5766505 A JPS5766505 A JP S5766505A
- Authority
- JP
- Japan
- Prior art keywords
- alumina layer
- pipe
- base material
- terminal
- stage
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
Landscapes
- Electrochemical Coating By Surface Reaction (AREA)
Abstract
PURPOSE:To obtain a cantilever pipe which has the fast rise of sound and improved acoustic characteristics, by increasing hardness, rigidity, elasticity, etc., by forming a crystalline alumina layer by performing the two-stage anode oxidationof the surface of an Al (alloy) base pipe; CONSTITUTION:One terminal 1a of an Al or Al-alloy pipe base material is sealed by being pressed and a hole 2 for stylus installation is made near the terminal. After this base material 1 is pretreated as required, the same anode oxidation with the ordinary formation of an ''Alumite '' film is performed to form an amorphous alumina layer. With current density high enough to cause plasma discharge on tne alumina layer surface, especially 10-50A/dm<2>, anode oxidation as the 2nd stage is performed in an electrolytic bath of weak acidm for example, 1.5-2.5M/l density Na2CO3, at 30-50 deg.C and for about 2-7min, thus forming an about 10mum crystalline alumina layer 3. Consequently, a cantilever pipe which has large strength, increased internal friction,and superior acoustic and mechanical characteristics is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17615280A JPS5766505A (en) | 1980-12-13 | 1980-12-13 | Cantilever pipe for pickup and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17615280A JPS5766505A (en) | 1980-12-13 | 1980-12-13 | Cantilever pipe for pickup and its manufacture |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14136580A Division JPS5765098A (en) | 1980-10-09 | 1980-10-09 | Vibration diaphragm for acoustic transducer and its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5766505A true JPS5766505A (en) | 1982-04-22 |
Family
ID=16008564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17615280A Pending JPS5766505A (en) | 1980-12-13 | 1980-12-13 | Cantilever pipe for pickup and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5766505A (en) |
-
1980
- 1980-12-13 JP JP17615280A patent/JPS5766505A/en active Pending
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