DE350701C - Process for the production of high vacuum pipes - Google Patents

Process for the production of high vacuum pipes

Info

Publication number
DE350701C
DE350701C DE1918350701D DE350701DA DE350701C DE 350701 C DE350701 C DE 350701C DE 1918350701 D DE1918350701 D DE 1918350701D DE 350701D A DE350701D A DE 350701DA DE 350701 C DE350701 C DE 350701C
Authority
DE
Germany
Prior art keywords
high vacuum
production
metals
tubes
vacuum pipes
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.)
Expired
Application number
DE1918350701D
Other languages
German (de)
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Application granted granted Critical
Publication of DE350701C publication Critical patent/DE350701C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/04Refining by applying a vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Furnace Details (AREA)

Description

Verfahren zur Herstellung Hochvakuumröhren. Zusatz zum Patent 345=6I. Die vorliegende Erfindung betrifft die. Anwendung des Verfahrens nach dem Hauptpatent, insbesondere nach Anspruch a, für die Herstellung von Bauteilen für Hochvakuu.mröhren u. dgl.Process for making high vacuum tubes. Addendum to patent 345 = 6I. The present invention relates to. Application of the procedure according to the main patent, in particular according to claim a, for the production of components for high vacuum tubes and the like

- -Es ist bekannt, daß bei der Herstellung von Hochvakuumröhren, wie Röntgenröhren, Glühkathodenröhren, Verstärker- und Ventilröhren usw., die genügende Entgasung der darin enthaltenen Metalle besondere Schwierigkeiten macht. Man sucht zu diesem Zweck die Gase aus den Metallen beim Auspumpen der Röhren durch möglichst hohe Erhitzung, sei es von außen, sei es durch Überlastung der Röhren auszutreiben. Es hat sich jedoch herausgestellt, daß damit eine völlige Entgasung der Metalle selbst in sehr langen Zeiten nicht erreichbar ist, indem jede weitere Temperatursteigerung wieder von neuem Gase aus den Metallen austreten läßt, die dann die Röhre unbrauchbar machen können. Anderseits bewirkt eine Überhitzung der in der Röhre enthaltenen Teile häufig eine Zerstäubung o. dgl. der Metalle, die ebenfalls möglichst vermieden werden soll. Eine ausreichende Entgasun,- der Metalle läßt sich jedoch dadurch erreichen, daß die Metalle im Vakuum geschmolzen und genügend lange darin geschmolzen gehalten werden. Es hat sich herausgestellt, daß solche Metalle beim Verarbeiten zu Blech oder Draht oder -sogar beim Ausglühen in irgendwelchen Gasen, namentlich Wasserstoff, auch nachträglich Gasmengen nicht wieder in solcher Form aufnehmen, daß diese bei der Herstellung der Röhren zu Störungen Anlaß geben.- - It is known that in the production of high vacuum tubes, such as X-ray tubes, hot-cathode tubes, amplifiers and valve tubes, etc., that sufficient degassing of the particular difficulties metals contained therein does. For this purpose one looks for the gases from the metals when pumping out the tubes by heating them as high as possible, either from the outside or by overloading the tubes. It has been found, however, that complete degassing of the metals cannot be achieved even in very long times, in that every further increase in temperature allows new gases to escape from the metals, which can then render the tube unusable. On the other hand, overheating of the parts contained in the tube often causes atomization or the like of the metals, which should also be avoided as far as possible. Sufficient degassing of the metals can, however, be achieved by melting the metals in a vacuum and keeping them melted for a sufficiently long time. It has been found that such metals when processed into sheet metal or wire or even when annealed in any gases, namely hydrogen, do not take up gas quantities again in such a form that they give rise to disturbances in the manufacture of the tubes.

Claims (1)

PATENT-ANSPRUCH-Verfahren zur Herstellung von Bauteilen für Hochvakuumröhren u. dgl., gekennzeichnet durch die Verwendung der nach dem Verfahren des Hauptpatents gewonnenen gasfreien Metalle.PATENT CLAIM process for the production of components for high vacuum tubes and the like., characterized by the use of the process of the main patent extracted gas-free metals.
DE1918350701D 1918-01-12 1918-04-19 Process for the production of high vacuum pipes Expired DE350701C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE345161T 1918-01-12
DE350701T 1918-04-19

Publications (1)

Publication Number Publication Date
DE350701C true DE350701C (en) 1922-03-23

Family

ID=6263759

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1918350701D Expired DE350701C (en) 1918-01-12 1918-04-19 Process for the production of high vacuum pipes

Country Status (1)

Country Link
DE (1) DE350701C (en)

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