DE350701C - Process for the production of high vacuum pipes - Google Patents
Process for the production of high vacuum pipesInfo
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 5
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 150000002739 metals Chemical class 0.000 claims description 9
- 239000007789 gas Substances 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining 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)
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) |
-
1918
- 1918-04-19 DE DE1918350701D patent/DE350701C/en not_active Expired
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