By Werner Espe
Fabrics of excessive Vacuum know-how, quantity 2: Silicates covers silicate insulators of distinct value to hoover know-how. The booklet discusses the manufacture, composition, and actual and chemical houses of technical glasses, quartz glass, quartzware, vycor glass, ceramic fabrics, mica, and asbestos.
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Extra info for Silicates. Materials of High Vacuum Technology
23> PARTRIDGE. 3* 1 1 o ON 1 O 00 s© o (24) 2EsPE (sealing glass for ferritic CrFe). <25> ! D A L E . <2«) KALSING. («> IVOLF. Irt 1 1 © Crt °i o sO r^ m © (29> Original OSRAM glass (see KALSING). io: © Csl Csl t~ 00 (28> Because of absence of K . 0 , it is not radioactive ; hence is suitable for Geiger counters. Sa? 1 1 <30> Glass made by the present-day GLASHÜTTE EINHEIT (VEB), formerly OSRAM at Weisswasser. Not the same as OSRAM glass of the same title, according to KALSING. <31> Not determined.
58) D a t a g i v e n i n c o r r e s p e n d e n c e f r o m V E B G L A S W E R K E S C H O T T U N D G E N . , J e n a . (58) IKNAPP. ( 6°) REIMANN. (βΐ) T r a d e - n a m e s of G D R g l a s s e s a r e s o m e t i m e s a l s o t h o s e of F R G p r o d u c t s . A s a r e s u l t of t h e i n d e p e n d e n t d e v e l o p m e n t a n d m a n u f a c t u r e i n b o t h a r e a s s i n c e 1 9 4 8 , c o m p o s i t i o n s a n d p r o p e r t i e s of G e r m a n g l a s s e s of t h e s a m e n a m e b u t different sources can diverge widely.
2> Average of four similar products. (3) "Pyrex" means generally CORNING borosilicate 7740, and "Nonex 1 means 7720 (see Table T 10-4, Al). It should be noted, however, that these terms, and "Vycor", are the general trade-marks of about 150 differ ent types of glass, but not of precisely specified glasses (KOHL, H ELD- od a S o MAN). o ci *"* sO TJÎ CO *1 ON irt s© o sO °i i rt 1 1 o 6 00 m . irt CO <*> Literature data; mfr. not named. <5) For mass-production by machines.