TECHNOLOGICAL - MACHINE TOOLS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600250993-2
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 1
• Document Creation Date: December 22, 2016
• Document Release Date: July 6, 2011
• Sequence Number: 993
• Publication Date: October 12, 1949
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/07/06 :CIA-RDP80-00809A000600250993-2
CIASSiFICATICN r,ON:~.TDENTIAL ~I fp~[~~~~~~~
yl~ S
INFORPafATION FROPYf
COUNTRY USSR
SUBJECT
NONI
DATE'
.PUBLISHED
Monthly pariedicai.
Moecav
Jau 194.8
EANGUAGE Rtiaseiar.
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DY IT[ CORYRATi ,R AMY YARR[R TD AR DRA4TN0\II[D V[RYOR It ~HO~
Nlil1[D RY 411. i[IADDV KTIOR 01 TNfY IORY Ii IRD:11YiT[D.~"
SGURCE'
THIS IS UNEVA'~UATE'J INFORMATION
%'etASft%Y PROLETARIY PLAIPP CUTS DIAMOftD G0165U2dpTI0H
Coneervntion of industrial diamon3e used is truing grinding xheele and
the introduction of diamon3lees trui.~g are problems which have bean under
study at the Srasnvy proletariy Plant since 1944.
Truing h9ada with 80 - 150 milometers z 20 - 32 millimaterra carbcrundnm
abrasive vheole vas tried on a large scale until 1948. While the truing vne
generally satisfactory, the heads were bul~q and heavy and required n
great deal of manual labor is installation and removal.
The plant had to design a small, compect, and light truing device Por
use in the shops. The fall.oving means were tried: (a) hard alloy truing tools;
(b) "AZ" vheele mado by the Leningrad SYparimY+ntal Abrasives Plant and the VPIIMAA9h~
60 z 6 a 20 millimeters superhard vhnels mnde~ bg the Chelynbine), Plant,
and "Zinterkolrund^ vheole; (o) metal cutters oP various types; and (d) 80 - 15G
m IIlimetem ,arborundum abrasive wheels.
Very entiefnotary results v9re achl3ved vSth a metal disc vheelhead. Steel
20%~ 62 - 65 HRC hardness. vas used. The life of these discs ie 2 - 3 weeks
when truing 500 millimeter vheele.
Among the pnrt6 ground by vheele treated ao above are Type A thrust centers
(teentr uporayy tips A) and pistons ground to n precision of 0.015 millimeter.
The grinding machine used 400 z 50 z 127 mlIlimeter vheele, ~ Fain, C1 hardness.
The use of diamonds hoe been cosroletel.~ alimingted,on 2G percent of the
available cylindrical grinding nschiree and partially eliminated a the ra-
mainiag in some operations.
The introduction o~P metal diet :,~.eelheade hoe affectbd a saving of 43
percent in combined diamond and hard metal mata~iela during three quarters of
1948 ae compared with tr.a cams psri?xl is 1947.
S AT TE
ARMY
CIASSIFICATION COfiFIDffiVTIAL
NAW NSRB
I~~Sanitized Copy Approved for Release 2011/07/06 :CIA-RDP80-00809A000600250993-2