JPS56137795A - Parts for acoustic equipment and its manufacture - Google Patents

Parts for acoustic equipment and its manufacture

Info

Publication number
JPS56137795A
JPS56137795A JP4135880A JP4135880A JPS56137795A JP S56137795 A JPS56137795 A JP S56137795A JP 4135880 A JP4135880 A JP 4135880A JP 4135880 A JP4135880 A JP 4135880A JP S56137795 A JPS56137795 A JP S56137795A
Authority
JP
Japan
Prior art keywords
vacuum
container
bases
held
parts
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
Application number
JP4135880A
Other languages
Japanese (ja)
Inventor
Tsutomu Hiromoto
Yoshiro Shimamune
Minetaro Hirose
Makoto Otani
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4135880A priority Critical patent/JPS56137795A/en
Publication of JPS56137795A publication Critical patent/JPS56137795A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension

Abstract

PURPOSE:To increase the modulus of elasticity, to uniform the thickness and to facilitate the treatment, by depositing crystal, which consists essentially of TiB1.1, on the basic body of the parts made of titanium used for acoustic equipment. CONSTITUTION:Titanium-made parts base 1, after being cleaned by removing grease and by acid pickling, is fitted to holding jig 3. Next, after boron powder 2 is laid on the bottom surface of vacuum container 4, holding jig 3 fitted with bases 3 is put in the container and lid 5 is closed. Then, vacuum device 8 is operated to produce a high vacuum of >=10<-5> Torr in vacuum container 4, which is then put in furnace 6 to rise the temperature. During this temperature rise, adsorption gas of bases 1 and boron powder 2 is exhausted and while a vacuum of >=10<-4> Torr is held, a prescribed temperature is obtained and then held for a prescribed time. Next, furnace 6 is moved and, while the vacuum is held, cooled by radiation to the room temperature, and then lid 5 is opened to take titanium-made parts bases 1 out of the container.
JP4135880A 1980-03-31 1980-03-31 Parts for acoustic equipment and its manufacture Pending JPS56137795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4135880A JPS56137795A (en) 1980-03-31 1980-03-31 Parts for acoustic equipment and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4135880A JPS56137795A (en) 1980-03-31 1980-03-31 Parts for acoustic equipment and its manufacture

Publications (1)

Publication Number Publication Date
JPS56137795A true JPS56137795A (en) 1981-10-27

Family

ID=12606262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4135880A Pending JPS56137795A (en) 1980-03-31 1980-03-31 Parts for acoustic equipment and its manufacture

Country Status (1)

Country Link
JP (1) JPS56137795A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760244A (en) * 1985-11-11 1988-07-26 Jiri Hokynar Apparatus for the treatment of semiconductor materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760244A (en) * 1985-11-11 1988-07-26 Jiri Hokynar Apparatus for the treatment of semiconductor materials

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