IS 228-18: Methods of chemical analysis of steels, Part 18: Determination of oxygen by instrumental method

8 Pages·1998·1.1 MB·English

by  Bureau of Indian Standards

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IS 228-18 (1998): Methods of chemical analysis of steels,
Part 18: Determination of oxygen by instrumental method
[MTD 16: Alloy Steels and Forgings]
“!ा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””ै”
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“Knowledge is such a treasure which cannot be stolen”

IS 228(Part18):1998
*m

(ww~~~
Indian Standard
METHODSOFCHEMICALANALYSIS
OFSTEELS
PART 18 DETERMINATION OF OXYGEN BY INSTRUMENTAL METHOD
( FOR OXYGEN 0.001 to 0.100 0 PERCENT )
( Second Revision )
ICS 77.080.20

@BIS 1998
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI I 10002

May 8991 Price Group 1
Methods of lacimehC sisylanA of suorreF slateM lanoitceS ,eettimmoC DTM 2
DROWEROF
sihT naidnI dradnatS (Part 18) dnoceS( )noisiveR was adopted yb the uaeruB of naidnI ,sdradnatS after the draft
dezilanif yb the Methods of lacimehC sisylanA of suorreF slateM lanoitceS eettimmoC had neeb devorppa yb
the lacigrullateM gnireenignE noisiviD .licnuoC
SI 228, hcihw was tsrif dehsilbup ni 1952 dna yltneuqesbus desiver ni 1959, derevoc the lacimehc sisylana of
nialp nobrac dna wol yolla ,sleets gnola htiw gip nori dna cast .nori tI was desiver niaga ot ekam ti evisneherpmoc
in respect of steel analysis and to exclude gip nori dna cast nori hcihw were gnieb derevoc ni separate .sdradnats
gniruD sti dnoces noisiver the dradnats has neeb tilps pu ni lareves parts.
sihT part srevoc the sdohtem for noitanimreted of .negyxo ehT other parts of siht seires :era
SI 22x hqethods for lacimehc sisylana of sleets :
(Part )I : 1987 noitanimreteD of nobrac yb cirtemulov dohtem (for nobrac 0.05 ot 2.50 )tnecrep
(Part 2) : 1987 noitanimreteD of esenagnam ni nialp nobrac dna wol yolla sleets yb etinesra dohtem
(Part 3) : 1987 noitanimreteD of surohpsohp yb cirtemilakla dohtem
(Part 4) : 789I noitanimreteD of latot nobrac yb cirtemivarg dohtem (for nobrac greater naht or lauqe ot
0. I )tnecrep
(Part 5) : 1987 noitanimreteD of lekcin yb lyhtemid emixoy!g )cirtemivarg( dohtem (for lekcin greater naht
or lauqe ot 0.1 )tnecrep
(Part 6) : 1987 noitanimreteD of muimorhc yb etahplusrep noitadixo dohtem (for muimorhc greater naht
or lauqe ot 0. I )tnecrep
(Part 7) : 1990 noitanimreteD of munedbylom yb enixoniozneb dohtem (for nunedbylom greater naht or
lauqe ot I )tnecrep
(Part 8) : 989I noitanimreteD of nocilis yb the cirtemivarg dohtem (for nocilis 0.05 ot 5.00 )tnecrep
(Part 9) : 989I noitanimreteD of ruhplus ni nialp nobrac sleets yb noitulove dohtem (for ruhplus 0.0 i to
0.25 )tnecrep
(Part )OI : 1989 noitanimreteD of munedbylo m yb etanaycoiht cirtemotohp( ) dohtem ni wol dna hgih yolla
sleets (for munedbylom 0.01 ot 1.5 )tnecrep
(Part I )I : 1990 noitanimreteD of nocilis yb cirtemotohp dohtem ni nobrac sleets dna wol yolla sleets (for
nocilis 0.0 1 ot 0.05 )tnecrep
(Part 12) : 1988 noitanimreteD of esenagnam yb etadoirep cirtemotohportceps dohtem ni wol dna hgih yolla
sleets (for esenagnam 0.01 ot 2.0 )tnecrep
(Part 13) : 1982 noitanimreteD of cinesra
(Part 14) : 1988 noitanimreteD of nobrac yb lameht ytivitcudnoc dohtem (for reppoc 0.005 ot )tnecrepOOO.2
(Part 15) : 1992 noitanimreteD of copper yb etahpalusoiht edidoi dohtem (for copper 0.05 ot 5 )tnecrep
(Part 16) : 1992 noitanimreteD of netsgnut yb cirtemotohportceps dohtem (for netsgnut 0.1 ot 2 )tnecrep
(Part 17) : 1998 noitanimreteD of negortin yb lamreht ytivitcudnoc dohtem (for negortin pu ot .04 )tnecrep
In siht noisiver latnemurtsnI‘ Method’ for noitanimreted of negyxo ni leets has neeb .decudortni
roF the esoprup of gnidiced whether a ralucitrap tnemeriuqer of siht dradnats si deilpmoc ,htiw the lanif ,eulav
devresbo or ,detaluclac gnisserpxe the tluser of a test or ,sisylana llahs eb dednuor off ni ecnadrocca htiw
SI 2 : 1960 seluR‘ for gnidnuor off laciremun seulav (revised)‘. The rebmun of tnacifingis secalp deniater ni
the dednuor off eulav dluohs eb emas as that of the deificeps eulav ni siht .dradnats
IS228(Part18):1!998
Indian Standard
METHODSOFCHEMICAL ANALYSIS
OFSTEELS
PART 18 DETERMINATION OF OXYGEN BY INSTRUMENTAL METHOD
( FOR OXYGEN 0.001 to 0.100 0 PERCENT )
( Second Revision )
1 SCOPE of nogra muileh or negortin gnidneped nopu the
tnemurtsni ledom dna the devlove gases are passed
sihT dradnats (Part 18) sebircsed the dohtem for
hguorht derarfni detector where CO si derusaem
noitanimreted of negyxo ni leets ni the egnar morf
yltcerid or after sti noisrevnoc ot CO2. ehT detector
0.001 ot 0.100 0 tnecrep yb elbaliava .stnemurtsni
esnopser ot siht egnahc si deyalpsid yltcerid as negyxo
2 SAMPLING .tnetnoc
2.1 noitacoL dna noitceles of elpmas nac eb as per
3.3 Reagents
stnemeriuqer dna ot get a good evitatneserper .elpmas
esU ylno dilos selpmas ot esiminim the errors eud ot 3.3.1 Acetone or n-Hexane
ecafrus .noitadixo elpmaS ezis dna thgiew llahs eb
3.3.2 Ascarite
hcus so as ot tius the elbicurc ni hcihw noisuf si gnieb
deirrac .tuo 3.3.3 Inert Gas Helium, Argon of the Required Purity
2.2 elpmaS noitaraperp euqinhcet si lacitirc ot niatta 3.3.4 Magnesium Perchlorate
,tnetsisnoc elbailer dna elbicudorper negyxo .sgnidaer
3.3.5 Charcoal and Copper Oxide, ni a htrae-erar
tuC selpmas ot the etairporppa ezis gnisu ffo-tuc
edixo dexim desab desu( ni emos .)stnemurtsni
sleehw or yb .gninihcam diovA revo gnitaeh dna other
edixo snoitanimatnoc gnirud .noitaraperp lacipyT
3.4 Procedure
elpmas ezis of 6-5 mm aid (or 5 )*mm dna 50 mm
htgnel si elbatius for lla sepyt of .stnemurtsni eliF the 3.4.1 Prepare dna esilibats the .tnemurtsni egnahC
eceip htiw ,naelc htooms elif dna edarba the eritne the slacimehc dna sretlif as .deriuqer Check for
ecafrus ot evomer lla traces of .noitadixo tuC yb gnisu egakael dna nur two or three ymmud sisylana ot check
naelc hacksaw edalb tuohtiw( )tniap ot 4-3 mm gnol the noitarepo dna naelc the metsys erofeb gnikat pu
seceip gnihgiew approx 1 g. dnaH elif niaga the tuc noitarbilac htiw dradnats .selpmas
faces. htiW a enif grade nocilis edibrac paper naelc the
3.4.2 ecniS ycarucca of sisylana ylniam sdneped no
ecafrus dna drop ti ni a elttob gniniatnoc enoteca dna
the ,sdradnats for noitarbilac tceles ylhgih
do cinosartlu .gninaelc elihW gnidnah the elpmas esu
suoenegomoh selpmas of lacitnedi esab ,lairetam for
tweezers. Do ton hcuot the ecafrus htiw sregnif gnirud
hcihw negyxo seulav evah neeb .deifitrec nI emos
dna ni the gniwollof stages of .gninaelc
,stnemurtsni gas gnisod noitarbilac si elbaliava ot set
3 NOITANIMRETED FO NEGYXO pu the tnemurtsni ,esnopser tub ti si dednemmocer ot
mrifnoc the emas htiw .sdradnats
3.1 eniltuO of the Method
ehT elpmas si detlem ni a etihparg elbicurc rednu treni 3.4.3 enimreteD the knalb eulav as per the snoitcurtsni
gas ,maerts at a erutarepmet of ton ssel naht 2 C°000 dna etaroprocni the emas fi the tnemurtsni si
ot esaeler ,negyxo hcihw senibmoc htiw nobrac morf epyt-citamotua or ti nac eb decuder morf the negyxo
the elbicurc ot mrof nobrac edixonom dna hcihw si eulav .retal
deirrac gnola htiw the treni gas ot derarfni detector.
ehT detector tuptuo si deyalpsid as negyxo .tnetnoc 3.4.4 hgieW yletarucca ot the tseraen 1 gm of
ehT detector tuptuo si detarbilac htiw ralimis sdradnats noitarbilac dradnats gnivah ,wol muidem dna hgih
for hcihw deifitrec negyxo seulav are .elbaliava negyxo .stnetnoc thgieW llahs eb as per the
s’tnemurtsni .ytilibapac
3.2 Instruments
3.2.1 roF the stnemurtsni desab no the derarfni 3.4.5 wolloF the noitarbilac serudecorp as dial nwod

detector elpmas.eht si detlem ni the ecanruf ni a maerts yb the noitarepo launam of the tnemmrtsni dna
1
I
IS 228 ( Part 18 ) : 1998
hsilbatse the tnemurtsni .esnopser mrfnoC the emas tuo sisylana as per the erudecorp deificeps yb the
yb gninnur two lanoitidda .sdradnats ehT esnopser tnemurtsni .rerutcafunam Note the negyxo .eulav
dluohs eb nihtiw f 0.000 5 tnecrep negyxo for yrraC tuo the sisylana ni etacilper dna egareva the
etacilpud .snur ,seulav gnidracsid the reiltuo dnoyeb + 0.000 5
.tnecrep tA tsael three seulav dluohs eb nihtiw OOO.O+_
3.4.6 ekaT ylhserf prepared elpmas as per the elpmaS
5 .tnecrep
noitaraperp erudecorp (or elpmas prepared dna stored
ni .)enoteca hsaW the emas ni enoteca or enaxeh-n dna 3.5 Precision
yrd .ylhguoroht hgieW the elpmas yletarucca dna
ecalp ti ni the citamotua elpmas gnidaol .ecived yrraC Expected + 0.000 5 at 0.005 0 tnecrep negyxo .level
Bureau of Indian Standards
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MTD 2 ( 4105 ).
Amendments Issued Since Publication
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