SU663335A3 - Method of vacuum treatment of cathode-ray tube - Google Patents

Method of vacuum treatment of cathode-ray tube

Info

Publication number
SU663335A3
SU663335A3 SU752117531A SU2117531A SU663335A3 SU 663335 A3 SU663335 A3 SU 663335A3 SU 752117531 A SU752117531 A SU 752117531A SU 2117531 A SU2117531 A SU 2117531A SU 663335 A3 SU663335 A3 SU 663335A3
Authority
SU
USSR - Soviet Union
Prior art keywords
cathode
heat treatment
parts
zone
temperature
Prior art date
Application number
SU752117531A
Other languages
Russian (ru)
Inventor
Стэнли Совикки Фрэнк
Original Assignee
Рка Корпорейшн (Фирма)
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 Рка Корпорейшн (Фирма) filed Critical Рка Корпорейшн (Фирма)
Application granted granted Critical
Publication of SU663335A3 publication Critical patent/SU663335A3/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus 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
    • H01J9/38Exhausting, degassing, filling, or cleaning vessels
    • H01J9/385Exhausting vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (2)

и последующем понижении примерно до 100°С. В определенное врем  осуществл ют последовательную термообработку jtisTaлей внутренней арматуры токами высокой частоты пор дка 1,0-1,5 МГ и катода - подачей электрического тока пор дка 1,1 А на подогреватель в течение 15тЗО мин при 200-8CfO°C. Затем осуществл ют одновременную термообработку деталей внутренней арматуры и катода в течение 5-10 мин при 450-lOOO C. После окончани  вакуумной обработки оболочку электронно-лучевой трубки герметизируют. П р и м е р. Электронно-лучевые трубки присоедан ют к вакуумным системам и производ т откачку газов из оболочек с одновременным их подогревом от кс 1натной температури до 300450с с.последующим понижением температуры до в течение 2-3 ч, с 1 по 28 зоны.; Начина  с зоны 17, осуществл ют термообработку деталей внут ренней а клатурв токами высокой частоты пор дка 1,0-1,5МГ в течение 1530 мин при . Затем отключают подачу энергии высокой частоты и в зоне 20 подают на подогреватель 1са.т6да ток 1,1 А напр жением 12 В и производ т термообработку катода при , После последовательной терлбббработки деталей внутренней арматуры и 1катода в зоне 20 Ьс::УЙ1ёствл ют их одноврёменную термообработку в течение 5-10 мни при 450-1000С, в зШйсИЙОсти от типа эл ё :тронно-лучевой трубки Процесс вакуумной обработки йакан чнваетс  герметизацией электронно-лу чевой трубки, Дополнительна  одновременна  термообработка при высокой температуре очищает и обеэгаживает детали внутренней арматуры и катода без разрушени  покрыти  последнего, исключа  отложение удал емых веществ на указанных детал х, что приводит к увеличению, примерно на 8% тока эмиссии катода в готовых трубках и уменьшение количества брака.. Электронно-лучевые трубки, изготовленные данным crtoco6oM, имеют повышенное качество изображени . Формула изобретени  Способ вакуумной обработки элек ронно- лучевой трубки, включакадий термообработку оболочки и деталей внутренней арматуры при температуре 300-450с с одновременной откачкой газов из оболочки, последовательную термообработку деталей внутренней арматуры токами высокой частоты и катода - подачей электричесжого тока на подогреватель и герметизацию оболочки, о т л и Ч а ю щ И и с   тем, что, с целью пбвьшёнй  надежности и качества электронно-лучевых трубок, после; последовательной те| 1ообработки деталей внутренней арматуры и катрда производ т их одновременную термообработку в течение 5-10 мин при температуре 450-iqOO°C. , , . Источники информации, прин тые во внимание при экспертизе 1.Патент США 2532315, кл, 316-12, 1950,  and subsequent decrease to about 100 ° C. At a certain time, sequential heat treatment of internal fittings by high-frequency currents of the order of 1.0-1.5 MG and of the cathode is carried out by supplying an electric current of 1.1 A to the preheater for 15 min COO at 200-8CfO ° C. Then, simultaneous heat treatment of the parts of the internal reinforcement and the cathode is carried out for 5-10 min at 450-1OOO C. After the end of the vacuum treatment, the shell of the cathode ray tube is sealed. PRI me R. The cathode ray tubes are attached to the vacuum systems and the gases are pumped out of the shells while they are heated from the condensate temperature to 300–450 seconds before the temperature is reduced to within 2-3 hours, from zone 1 to zone 28; Starting from zone 17, heat treatment of the parts is carried out using internal high temperature clutches of the order of 1.0-1.5 mg for 1530 minutes at. Then the high-frequency power supply is disconnected and in zone 20 it is supplied to the heater 1cA. Then a current of 1.1 A is applied at a voltage of 12 V and the cathode is heat-treated at, After consecutive heat-treating parts of the internal reinforcement and cathode in the zone 20 bc heat treatment for 5–10 min at 450–1000 ° C, in accordance with the type of electrons: thron-beam tube. Vacuum processing process is performed by sealing a cathode-ray tube. Additionally, simultaneous heat treatment at high temperature cleans and ejects Details of the internal reinforcement and cathode without destroying the coating of the latter, excluding the deposition of removed substances on the specified parts, which leads to an increase of about 8% of the cathode emission current in the finished tubes and a decrease in the number of scrap. have enhanced image quality. The invention The method of vacuum processing of an electron-beam tube, including heat treatment of the casing and parts of internal reinforcement at a temperature of 300-450s with simultaneous pumping of gases from the casing, sequential heat treatment of parts of the internal reinforcement by high frequency currents and the cathode - supplying electric current to the heater and sealing the casing, About t and and And y and I with the fact that, for the purpose of reliability and quality of electron beam tubes, after; consistent ones | The processing of the internal fittings and the parts is carried out by simultaneous heat treatment of them for 5-10 minutes at a temperature of 450 ° C. ,, Sources of information taken into account in the examination 1. US patent 2532315, class, 316-12, 1950, 2.Барановский В,И, Технологи  производства приет ных электронно-лучевых трубок, Энерги , Москва, 1970, с, 269-273 и.289-290.2. Baranovsky V, I, Technologists of production of helium cathode-ray tubes, Energie, Moscow, 1970, p., 269-273 and 299-290.
SU752117531A 1974-03-25 1975-03-25 Method of vacuum treatment of cathode-ray tube SU663335A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US454158A US3922049A (en) 1974-03-25 1974-03-25 Method of degassing a cathode-ray tube prior to sealing

Publications (1)

Publication Number Publication Date
SU663335A3 true SU663335A3 (en) 1979-05-15

Family

ID=23803543

Family Applications (1)

Application Number Title Priority Date Filing Date
SU752117531A SU663335A3 (en) 1974-03-25 1975-03-25 Method of vacuum treatment of cathode-ray tube

Country Status (15)

Country Link
US (1) US3922049A (en)
JP (1) JPS555810B2 (en)
BE (1) BE827021A (en)
BR (1) BR7501624A (en)
CA (1) CA1022227A (en)
DE (1) DE2512906C3 (en)
ES (1) ES435720A1 (en)
FR (1) FR2273365B1 (en)
GB (1) GB1489644A (en)
IT (1) IT1034121B (en)
MX (1) MX2991E (en)
NL (1) NL7503481A (en)
PL (1) PL97861B1 (en)
SU (1) SU663335A3 (en)
ZA (1) ZA751834B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54111750A (en) * 1978-02-22 1979-09-01 Hitachi Ltd Manufacture for cathode ray tube
DE2941422A1 (en) * 1979-10-12 1981-04-23 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Evacuation procedure for vacuum tubes - placing in HV electric oven, operating vacuum pump, and cleaning contacts by electrical discharge
US4335926A (en) * 1980-03-26 1982-06-22 Rca Corporation Method for vaporizing getter material in a succession of cathode-ray tubes
US4410310A (en) * 1981-04-23 1983-10-18 Rca Corporation Degassing a CRT with modified RF heating of the mount assembly thereof
US4406637A (en) * 1981-07-02 1983-09-27 Rca Corporation Processing the mount assembly of a CRT to suppress afterglow
JPS6230769U (en) * 1985-08-09 1987-02-24
DE3625803A1 (en) * 1986-07-30 1988-02-04 Ifr Ingenieurbuero Fuer Regelu Method for evacuating the atmosphere from vacuum vessels, especially from cathode ray tubes or television tubes, and an installation for carrying out the method
JPS63198240A (en) * 1987-02-10 1988-08-16 Sony Corp Manufacture of resistor
JPH01289049A (en) * 1988-05-17 1989-11-21 Toshiba Corp Manufacture of cathode ray tube

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532315A (en) * 1949-04-02 1950-12-05 Eastman Kodak Co Apparatus and process for evacuating electronic tubes and the like
US3115732A (en) * 1961-09-26 1963-12-31 Rca Corp Apparatus for processing cathode ray tubes
US3441333A (en) * 1967-09-26 1969-04-29 Nat Video Corp Method of manufacturing cathode ray tube

Also Published As

Publication number Publication date
MX2991E (en) 1980-01-23
NL7503481A (en) 1975-09-29
IT1034121B (en) 1979-09-10
ES435720A1 (en) 1976-12-16
FR2273365A1 (en) 1975-12-26
FR2273365B1 (en) 1978-12-29
DE2512906C3 (en) 1984-10-18
DE2512906A1 (en) 1975-10-09
JPS555810B2 (en) 1980-02-09
ZA751834B (en) 1976-02-25
US3922049A (en) 1975-11-25
AU7925775A (en) 1976-09-23
GB1489644A (en) 1977-10-26
BE827021A (en) 1975-07-16
CA1022227A (en) 1977-12-06
JPS50131452A (en) 1975-10-17
DE2512906B2 (en) 1977-08-11
BR7501624A (en) 1975-12-23
PL97861B1 (en) 1978-03-30

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