JPS55157839A - Manufacture of cathode body - Google Patents

Manufacture of cathode body

Info

Publication number
JPS55157839A
JPS55157839A JP6537179A JP6537179A JPS55157839A JP S55157839 A JPS55157839 A JP S55157839A JP 6537179 A JP6537179 A JP 6537179A JP 6537179 A JP6537179 A JP 6537179A JP S55157839 A JPS55157839 A JP S55157839A
Authority
JP
Japan
Prior art keywords
sleeve
punch
molding part
mixed powder
strength
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
JP6537179A
Other languages
Japanese (ja)
Other versions
JPS6245659B2 (en
Inventor
Sadakichi Hotta
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6537179A priority Critical patent/JPS55157839A/en
Publication of JPS55157839A publication Critical patent/JPS55157839A/en
Publication of JPS6245659B2 publication Critical patent/JPS6245659B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

PURPOSE:To improve the flatness strength and mechanical strength of the electron emission surface and improve the thermal efficiency by installing a first sleeve consisting of hollow metal cylinder onto the die molding part and charging mixed powder into the first sleeve and pressing said mixed powder by a second sleeve with a punch. CONSTITUTION:The first sleeve 21 which has a high melting point and of which both ends are opened is installed in the molding part 26 of a die 25, and the knock- out 27 which has the outer diameter smaller than the inner diameter of the molding part 26 and larger than the outer diamter of the sleeve 21 is installed under the sleeve 21. After mixed powder 24 is charged into the inside space of the sleeve 21, the second sleeve 22 having the outer diameter smaller than the inner diameter of the sleeve 21 is inserted into the inside space of the first sleeve, in the state pressed into a punch 23, and then the powder 24 is pressed and molded. After that, the second sleeve 22 is left inside the first sleeve 21, and only the punch 23 is drawn out from the sleeve 21. Thus, the cathode body having superior flat sintering strength and mechanical strength and superior thermal efficiency can be obtained.
JP6537179A 1979-05-25 1979-05-25 Manufacture of cathode body Granted JPS55157839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6537179A JPS55157839A (en) 1979-05-25 1979-05-25 Manufacture of cathode body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6537179A JPS55157839A (en) 1979-05-25 1979-05-25 Manufacture of cathode body

Publications (2)

Publication Number Publication Date
JPS55157839A true JPS55157839A (en) 1980-12-08
JPS6245659B2 JPS6245659B2 (en) 1987-09-28

Family

ID=13285033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6537179A Granted JPS55157839A (en) 1979-05-25 1979-05-25 Manufacture of cathode body

Country Status (1)

Country Link
JP (1) JPS55157839A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62168316A (en) * 1986-01-10 1987-07-24 リツエンツイア・パテント−フエルヴアルツングス−ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Manufacture of porous pressed product with uneven end surface
CN109443297A (en) * 2018-11-09 2019-03-08 天津航空机电有限公司 A kind of flatness detection calibrator and detection correcting and regulating method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62168316A (en) * 1986-01-10 1987-07-24 リツエンツイア・パテント−フエルヴアルツングス−ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Manufacture of porous pressed product with uneven end surface
CN109443297A (en) * 2018-11-09 2019-03-08 天津航空机电有限公司 A kind of flatness detection calibrator and detection correcting and regulating method
CN109443297B (en) * 2018-11-09 2020-09-22 天津航空机电有限公司 Flatness detection and correction device and detection and correction method

Also Published As

Publication number Publication date
JPS6245659B2 (en) 1987-09-28

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