IS 12847: Carbon Bonded Silicon Carbide Crucibles

8 Pages·1997·0.99 MB·English

by  Bureau of Indian Standards

इंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 12847 (1997): Carbon Bonded Silicon Carbide Crucibles
[MTD 15: Refractories]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

SI 74821 : 7991
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Indian Standard
NOBRAC DEDNOB NOCILIS EDIBRAC
SELBICURC - NOITACIFICEPS
(
First Revision )
SCI 71.100.55

0 SIB 1997
BUREAU OF INDIAN STANDARDS
KANAM ,NAVAHB 9 RUDAHAB HAHS RAFAZ GRAM
WEN IHLED 110002
Jwze 7991 Price Group 1
seirotcarfeR lanoitceS ,eettimmoC DTM 15
FOREWORD
sihT naidnI dradnatS tsriF( )noisiveR was detpoda yb eht uaeruB fo naidnI Standards, retfa eht tfard
dezilanif. yb eht seirotcarfeR lanoitceS eettimmoC had neeb devorppa yb eht lacigrullateM gnireenignE
noisiviD .licnuoC
sihT standard was tsrif issued ni 1989. elihW gniweiver eht standard ni eht thgil fo ecneirepxe deniag
gnirud eseht ,sraey eht eettimmoC dediced ot esiver ti ot gnirb ti ni enil htiw eht tneserp secitcarp gnieb
dewollof yb eht naidnI .yrtsudnI
nI this ,noisiver eht gniwollof segnahc evah neeb edam :
)a lapicnirP stneidergni fo nobrac dednob nocilis edibrac selbicurc nevig ni xennA A era rof ecnadiug
.ylno
)b lacisyhP tset stnemeriuqer evah neeb .deifidom
selbicurC era hgih yrotcarfer nepo dehtuom slessev desu rof gnitaeh and gnitlem suoirav slatem and ,syolla
hcus as ,reppoc ,cniz ,muinimula brass, .cte
yllareneG selbicurc era fo yalc dednob epyt ro nobrac dednob .epyt roF nobrac dednob ,selbicurc nocilis
edibrac is desu eud ot its hgih lamreht ytivitcudnoc and wol tneiciffeoc .noisnapxe
A doog elbicurc is detcepxe ot evah hgih ssenirotcarfer ot withstand eht gnikrow ,erutarepmet doog
ytisned ot esuac on ssol fo tnetnoc yb ,nqitprosba ecnatsiser ot evisorroc snoitca fo cillatem ,sedixo slag
ash, ,cte and hgih dloc gnihsurc htgnerts ot dloh eht stnetnoc gnieb deirrac toh( ro .)dloc

roF eht esoprup fo gnidiced rehtehw a ralucitrap tnemeriuqer fo this standard is deilpmoc ,htiw eht lanif
,eulav devresbo ro ,detaluclac gnisserpxe eht tluser fo a tset ro ,sisylana shall eb dednuor ffo ni ecnadrocca
htiw SI 2 : 1960 seluR‘ rof gnidnuor ffo laciremun seulav .‘)desiver( ehT rebmun fo tnacifingis secalp
deniater ni eht dednuor ffo eulav dluohs eb eht emas as that fo eht deificeps eulav ni this standard.
SI :74821 1997
Indian Standard
NOBRAC DEDNOB NOCILIS EDIBRAC
SELBICURC - NOITACIFICEPS
(
First Revision )
1 EPOCS elbaT 1 lacisyhP tseT stnemeriuqeR
mc( S?fSU 5 dna 8.1)
1.1 sihT dradnats srevoc the stnemeriuqer of
nobrac dednob nocilis edibrac ,selbicurc hcihw nac lS cilsirclceruhC lnelneriuqeK Tesl lcohleM
eb desu pu ot .C°0051 .ON feK( ol treP
fo s1 )8251
1.2 snoisivorP of siht dradnats llahs ton ylppa ot
(1) (2) (3) (4)
selbicurc for gnitlem of .leets i) tnerappA ,ytisorop 03 traP 8
,tnccrcp Mau
2 SECNEREFER ii) kluB ,ytisned ,3m/g Min 1.8 1raP 21
iii) cirtemoryP enoc 82 traP 1
ehT naidnI sdradnatS nevig woleb are yrassecen ,tnelaviuqe dradnats
stcnujda ot siht :dradnats enoc ,)MTSA( ,rebmuN Min
)vi suludoM fo ,erutpur niM 0.8 traP S
IS No. Title ETON - aPM1 = ’mm/Nl = ”m/nMl = 201.0 .2mm/fgk
1387 : 1993 lareneG stnemcriuqcr for the
ylppus of lacigrullatem slairetam 6 MO~IEERF MORF STCEFE)I
dnoces( revision) ehT selbicurc llahs eb free morf dcfccts or cracks
1528 Methods of gnilpmas dna lacisyhp latnemirted ot sti .esu
tests for yrotcarfer slairetam
7 E’lAIIS )INA SNOlSNElhID
(Part 1) : 1980 noitanimrctcD of cirtemoryp
enoc tnelaviuqe (PCE) dna Shape, snoisnemid dna the sccnarclot no -ncmid
gninetfos tniop dnoces( revision) snois for edibrac dednob nocilis edibrac selbicurc
(Part 5) : 1993 noitanimreteD of suludom of llahs ylpmoc htiw the stncmcriuqcr nevig ni SI
erutpur dnoces( revision) 1748.

(Part 8) : 1974 noitanimreteD of ncrappa t 8 GNI,I’IMAS

ytisorop Cfirstr evision)
8.1 ehT tests llahs eb enod yb gnisu sebuc dna srab
(Part 12) : 1974 noitanimreteD of klub ytisned
as per tnavclcr naidnI dradnatS nevig ni elbaT 1.
tsrifC revision)
:8471 1951 eziS of etihparg selbicurc lsr$f 8.2 evitatncscrpeR selpmas of selbicurc llahs cb
nward as agreed ot ncewteh the rerutcafunam dna
revision )
the .resahcrup
3 YLP’IUS FO SLAIRETAM
Y ;<NIKRAIR
lareneG stnemeriuqer gnitaler ot the ylppus of
nobrac dednob nocilis edibrac selbicurc llahs eb as 9.1 Each elbicurc llahs cb ylbigel dna ylhilcdni
dial nwod ni SI 1387. dekram htiw the :gniwollof
a) a’rcrutcafunaM eman or ,kram-edart
4 LAPICNIR’I S‘I’N~II)ISI~I;(NI
)b eziS rebmun WS( SI 174X), dna
lapicnirP stncidcrgni of nobrac dednob nocilis -rac c) .epyT
edib selbicurc cra ,nevig rof ,ecnadiug ni xennA .A
9.2 Sl)1 noitacifitreC gnikralh
5 .IACISYII’I TSET STN3IM’1R1UQ~1R ehT lairetam yam also he dekram htiw the lcradnatS
Mark.
ehT selbicurc nehw tcstcd ni ecnadrocca htiw the
test sdohtem deificeps llahs mrofnoc ot the -eriuqer 9.2.1 ehT CSU of the drl*dnatS Mark si dcnrcvog yb
stncm nevig ni elbaT 1. the snoisivorp of the un~uB of nniltnI \lc-rrrftmrlS

1
IS 12847 : 1997
,tcA 1986 and eht seluR and snoitalugeR edam 10 PACKING
.rednuereht ehT sliated fo eht snoitidnoc rednu
ehT elbicurc shall eb ylbatius dekcap ni -mab/yah
hcihw eht ecnecil rof eht esu fo dradnatS Mark yam
oob baskets ro yna rehto elbatius gnikcap lairetam
eb detnarg ot srerutcafunam ro srecudorp yam eb
yllaudividni ot diova egamad gnirud transit.
deniatbo morf eht uaeruB fo naidnI Standards.
ANNEX A
(Foreword and Clause 4)
lapicnirP stneidergni nobracfo dednob nocilis )b etihparG - 28 ot 35 ;tnecrep and
A-l
edibrac selbicurc dluohs eb yllareneg as :swollof )c ,raT hctip ro yna rehto nobrac gnidnob
)a nociliS edibrac - 35 ,tnecrep Min; ,lairetam hcus as ,sniser .cte
uaeruB fo naidnI Standards
SIB is a yrotutats noitutitsni dehsilbatse rednu eht 1986 ot etomorp
Bureau ofIndian Standards Act,
suoinomrah tnempoleved fo eht seitivitca fo ,noitazidradnats gnikram and ytilauq noitacifitrec fo sdoog
and gnidnetta ot detcennoc srettam ni eht .yrtnuoc
thgirypoC
SIB has eht thgirypoc fo all its .snoitacilbup oN trap fo eseht snoitacilbup yam eb decudorper ni yna mrof
tuohtiw eht roirp noissimrep ni gnitirw fo .SIB sihT seod ton edulcerp eht eerf ,esu ni eht esruoc fo
gnitnemelpmi eht standard, fo yrassecen ,sliated hcus as slobmys and ,sezis epyt ro edarg .snoitangised
seiriuqnE gnitaler ot thgirypoc eb desserdda ot eht rotceriD ,)snoitacilbuP( .SIB
weiveR fo naidnI Standards
stnemdnemA era issued ot standards as eht deen sesira no eht basis fo .stnemmoc Standards era osla
deweiver ;yllacidoirep a standard gnola htiw stnemdnema is demriffaer nehw hcus weiver setacidni that
on segnahc era ;dedeen fi eht weiver setacidni that segnahc era ,dedeen ti is nekat up rof .noisiver sresU
fo naidnI Standards dluohs niatrecsa that yeht era ni noissessop fo eht tsetal stnemdnema ro noitide yb
gnirrefer ot eht tsetal issue fo SIB‘ ’koobdnaH and :sdradnatS‘ ylhtnoM .’snoitiddA
sihT naidnI dradnatS has neeb depoleved morf toD : .oN DTM 15 ( 4078 .)
stnemdnemA deussI ecniS noitacilbuP
dnemA .oN etaD fo eussI txeT detceffA
UAERUB FO NAIDNI SDRADNATS
:sretrauqdaeH

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