New Text
of Hydrogen (total) Fluorine (and other
isotopes)
I
Polymers
Ψ CulGlassed-Sfeel Pipe on the Job
(plasticizer content, crystallinity)
Moisture Fats and Oils (liquid
and solid
content)
With the Schlumberger Broadline NMR, y o u c a n get 3 0 - s e c o n d readouts foi both liquid and solid samples. Find out more about this new a c c u r a t e , s t a b l e , a n a l y t i c a l tool. Write for full information. RID GEF1ELD
INSTRUMENTATION
DIVISION
Ask about our complete line of Precision integrators, Permanent Magnets, and Cryostats.
66
C&EN
DEC.
7,
1959
F-C Glasteel Pipe (glass inside, steel outside) can b e field cut to required lengths, is lined ^vith 1 / s in.-thick horosilicate glass. Developed by Pfaudler Co., division of Pfaudler Permutit, Rochester, N.Y., the glass-lined pipe was shown last week at the 1959 Chem Show in New York. I t can he installed in four steps, according t o Pfaudler. First, you cut the pipe to length using conventional equipment (as demonstrated by the workman above). T h e n you thread it, fire polish t h e end for a smooth surface after cutting, and finish the end with a belt seinder for a flat gasket seat a n d seal-tight flange connection. Rated at 165 p.s.i., line pipe is available in IVo-, 2-, and 3-in. diameters, Pfaudler says. Ε1
High-Nickel Steels Coming International Nickel has confirmed rumors that it is researching high-nickel steels. It has applied for patent protec tion on a family of alloys containing from 2 0 t o 3 0 C/O nickel plus small amounts of aluminum and titanium. Main advantages of the alloys, ac cording to Inco: They have high ten sile a n d yield strengths, can he heat treated and formed easily. By con trolling the amounts of aluminum and titanium added, they can get specific physical properties. Varying the nickel content from as Ixigh a s 30% down to 2 0 % or lower also affects the physical properties of t h e steels. Optimum combination for strength and ductility: about 2 5 % znickel, 2 t o 6 % titanium a n d / o r aluiminunx, carbon below 0 . 0 5 % , silicon a n d manganese normal, a n d the bal
ance iron. Nickel steels of this com bination may find use in aircraft and missiles and in making high strength, wear resisting precision parts such as hearings, Inco acids. Steels of this composition have an other advantage—they can be welded in the hardened condition without pre heat. This feature, plus high strength properties, coulcl lead to their use in heavy wall pressure vessels and in heavy defense equipment. So far, Ineo has made no commercial melts of these alloys. L a b tests, how ever, show that yield strengths higher than 250,000 p.s.i., elongations of 6 to 109c, and reductions of area of more than 2 0 % can be expected. However, since the alloys d o not contain chro mium, they are not similar to stainless steels in corrosion resistance. Inco is n o w negotiating with steel companies to produce the new alloys.
Srïefs · ο · Ρ ûoubie
element
heating
tape
for
r e p e a t e d u s e in labs c o m e s f r o m G l a s C o l A p p a r a t u s , Terre H a u t e , I n d . T h e t a p e u s e s p a r a l l e l h e a t i n g e l e m e n t s of n i c h r o m e to bring b o t h s u p p l y l e a d s o u t a t one e n d . T h e s e l e a d s a r e w i r e d t o a t w i s t l o c k so t h a t a h e a t e r c o r d c a n be attached. The o t h e r e n d s of t h e e l e m e n t s a r e joined a n d finished w i t h a w a t e r p r o o f silicone r u b b e r fitting. A v a i l a b l e l e n g t h s : 4 t o 2 0 ft. i n 1 / 2 - i n . w i d t h s , 1 0 t o 20 ft. i n 1-in. w i d t h s . E2 • X - r a y diffraction q u a n t o m e t e r , by Applied Research Laboratories, Glend a l e , Calif., was d e v e l o p e d for A l c o a for analyzing aluminum-containing m i n erals. T h e u n i t uses t h e p o l y c h r o m a t o r principle, which allows simultaneous a n a l y s i s of all e l e m e n t s of i n t e r e s t i n a sample. I t also p r o v i d e s e l e c t r o n i c r e a d o u t of t h e result for e a c h e l e m e n t i n u n i t s of c o n c e n t r a t i o n , t h e c o m p a n y says. Ε 3
p a c i t i e s : 2 1 0 0 to 1 3 , 2 0 0 g a l . p e r h i \ , u s i n g r a w w a t e r w i t h 1 0 g r a i n s p e r gal. total exchangeable anions, Cochrane says. Ε7 • Two n e w g a g e s use g a m m a r a d i a t i o n to m e a s u r e continuously t h e spe cific g r a v i t y , p e r c e n t solids, o r i n t e r f a c e p a s s a g e of l i q u i d s in l a r g e p i p e s . D e v e l o p e d by O h r n a r t C o r p . , C i n c i n nati, Ohio, the g a g e s can b e built into p i p e l i n e s 1 0 to 1 6 i n . in d i a m e t e r or c a n b e b o l t e d a r o u n d t l i e o u t s i d e of e x i s t i n g p i p i n g , t h e c o m p a n y says. Operating principle: I n t e n s i t y o f r a d i a t i o n de t e c t e d b y t h e m e a s u r i n g c e l l is p r o p o r t i o n a l t o t h e d e n s i t y of t h e m a t e r i a l flowing in t h e p i p e . Ε 8 • G a g e m e a s u r e s small differential p r e s s u r e s a t h i g h l i n e p r e s s u r e s , ac c o r d i n g to its m a k e r , W a l l a c e & T i e r n a n , Inc., Belleville, N.J. F o r g a s or
• Dust collector, b y P a n g b o r n Corp., Hagerst-θΛνη, Md., u s e s glass filter f a b r i c for s e r v i c e to 5 5 0 ° F . To clean the filter, jets inside e a c h filter t u b e p r o v i d e s h o r t b l a s t s of air, a l t e r n a t i n g w i t h a s m a l l a m o u n t of r e v e r s e airflow f r o m the m a i n fan. T h i s action partially collapses t h e tubes, cleans the filter s u r f a c e s , a n d deposits t h e r e s i d u e i n storage hoppers, P a n g b o r n says. Ε ό • P a c k a g e d de mineralize?, by Coch r a n e C o r p . , P h i l a d e l p h i a , P a . , is d e s i g n e d f o r e a s e of i n s t a l l a t i o n . T h e u n i t is s e t i n p l a c e a n d c o n n e c t e d t o air and raw water supply, treated w a t e r o u t l e t , a n d open d r a i n . A v a i l a b l e c a
• 4-lrt. high vacuum pumping station is m a d e b y V e e c o V a c u u m , N e w H y d e Park, L o n g I s l a n d , N . Y . T h e V S - 4 0 0 p u m p s d o w n to 5 X 10~° m m . of m e r cury i n 4 5 seconds a n d h a s a p r e s s u r e m a x i m u m of less t h a n 5 Χ 1 0 - 7 m m . of m e r c u r y , Veeco says. Ε ΙΟ
| | |
Further useful information on keyed Equipment items menf î o n e d is readily available . . .
ι
l i s e handy coupon
on page 6 8 ^
ι
December 7, 1 9 5 9
• Transistorized digital electronic c o m p u t i n g s y s t e m will be m a r k e t e d b y M c B e e Corp., P o r t C h e s t e r , N . Y . I t is m a d e b y L i b r a s c o p e , a s u b s i d i a r y of G e n e r a l Precision E q u i p m e n t . De s i g n e d to h a n d l e b o t h b u s i n e s s a n d e n g i n e e r i n g problems, t h e P R C - 4 O 0 O c a n o p e r a t e o n 9-digit n u m b e r s a t r a t e s u p to 2 4 0 , 0 0 0 operations p e r m i n u t e , t h e firm s a y s . Ε 4 • H i g h v o l u m e csir s a m p l e r c o l l e c t s d u s t s a n d aerosols f r o m a i r a t r a t e s u p t o 1O0 c u . ft. per m i n . , says d e v e l o p e r Gelman Instrument. Chelsea, M i c h . T h e s a m p l e s are c o l l e c t e d o n filters w h i c h c a n b e a n a l y z e d to d e t e r m i n e c o n c e n t r a t i o n of r a d i o a c t i v e p a r t i c l e s , toxic m e t a l s , dust c o n t a m i n a n t s , a n d air pollutants. W i t h a 4-in. sampling h e a d , the unit weighs 9 l b . Ε 5
licittid s e r v i c e , it is s e n s i t i v e to p r e s s u r e c h a n g e of o n e p a r t in 1 0 0 0 , W & T s a y s . R a n g e s : 2 p.s.i. differential at l i n e p r e s s u r e s to 5 0 p.s.i.; 5 , 10, a n d 2 0 p.s.i d i f f e r e n t i a l a t l i n e p r e s s u r e s t o 3O0 p . s . i . Ε 9
Readers' information Service Use this h a n d y self m a i l e r t o o b t a i n further i n f o r m a t i o n or literature. Simply mark, dip coupon, fold, and mail Every w e e k C&EN's editors survey a large volume of valuable scien tific technical, and business information issued in the form of product announcements, booklets, catalogs, data sheets, etc. This material is digested and presented in several departments. For your conven ience this coupon is provided to facilitate requests for further informa tion on these items as well as o n products a n d services mentioned in advertisements. Name
ο oc
=
Position
Company Street City
Zone (Please print or
>»
State -
type)
C U P C O U P O N — F o l d A l o n g This L i n e — F a s t e n (Staple, T a p e , G l u e ) —•MAIL
4c STAMP
To: Readers' Information Service Chemical and Engineering N e w s 4 3 0 Parle Avenue N e w Y o r k 2 2 , Ν. Ύ. FASTEN HERE ONLY }
flHUHB
4
FASTEN HERE O N L Y
DEC.
7,
I9S9
C&EN
07
