Tiêu Chuẩn Iso 09147-1987 Scan.pdf

INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXAYHAPOflHAR OPrAHM3Al&lR l IO CTAH~APTM3A~MH Pig i rons Defini tion and classi fic[.]

INT ER A T IO NA L ORGA NIZA T ION FOR ST A NDA RDIZA T ION

IS0 (h Interna tio a l O rga niza tio for Sta nda rdiza tio ) is a worldwid fe era tio of

me ta l a d n n-go ernme tal in laiso with ISO , a lso ta k e pa rt in th work

Ca st iro a d pig iro

Printe in Switz rla nd

Pig-irons - Definition and c lassific ation

divisio of pig-iro s into diff ere t clase

with c onte ts of oth r eleme ts e ua l to or le s tha n th lmit

valu s giv n f or th m in ta ble 1

ste l or c a stiro Pig-iro is d lvre eith r in th molte sta te

or in th s ld state in primary forms s c as pig or simiar s ld

piec es, a nd gran late

Eleme t

Limit’)

%

Si c n

Chromium

in tota lz)

4 3 ,o

< 8.0

< 3,0

< 10,o

c: 10.0

1) Materials with hig er c onte ts a re fero-aloys

2) In cas s of d ubt, al eleme ts for whic a minimum c onte t is

spec ifie or wh s c onte t ex ce d th lower lmit giv n in ta ble 2,

f ootn te 8, para gra ph d), a re, in ac c ordanc e with ta ble 2, f ootn te 8,

pa ra gra ph c) a nd d), re a rd d as “oth r aloyin eleme ts” with th

ex c eptio of carbo , si c on, man an s , ph sph ru a nd c romium

1

Ta ble 2 - C las ificatio a nd d sig a tio of pig-iro ac c ordin to its c emical c ompo itio l)

Ab re iatio

1) The u bra c kete v alu s a re th s whic d termin th c las ific atio of th pig-iro V alu s giv n in brac ets in ic a te, f or informatio o ly , th

ran e in whic ac tua l c onte ts of h eleme ts c onc ern d n rmaly le

2) By s b-dividin this ra ng into vario s s b-an e , th clas of pig-iro c onc ern d is n rmaly furh r s b-divid d into dif fere t gra de

3) No minimum valu s a re spec ifie f or oth r eleme ts Depe din , f or ex ample, o th raw materials u e , th pig-iro may u inte tio a lly c onta in

eleme ts oth r than th s in ic ate in c lumn 4 to 8 a nd in perc enta ge , whic h, for s me eleme ts, may reac h a valu of a bo t 0,5 % T he c onte ts

of h s in ic ate eleme ts s o ld n t be u e in th c lasific atio of h pig-iro

4) F or th s clase of o n ry pig-iro , dif fere t terms s c as low, me ium, interme ia te a nd hig ph sph ru , n rmal haematite a nd s mi-

haematite C levela nd, etc a re u e in th vario s p rs of h world a nd this pa rtly in a v ery dif fere t s n e C on e u ntly , it is re om e d d that o

th internatio a l level s c terms be a ba nd n d a nd tha t in th s cas s o ly th a bre iatio s given in c lumn 3 be a pple as d sig atio s

5) Normaly u e for eith r pearltic n d la r c astiro or for malea le c astiro

6) A f urh r c ha rac teristic of h s pig-iro gra de is tha t th c onte ts of eleme ts preju ic in th formatio of n d la r gra phite a nd promotin th

form io of c arbid a re low ac c ordin to th inte d d u e of th gra de c onc ern d

7) T his clas inc lu e pig-iro tha t c a nn t be c lasifie eith r in clase 1 to 3.3 or in clas e 5.1 a nd 5.2

8) O th r aloy ed pig-iro inc lu e :

a ) pig-iro with a si c n c onte t betwe n > 4,0 a nd 8.0 % ;

b) pig-iro with a man an s c onte t betwe n > 6,0 a nd 3 ,O %, pro id d tha t it c an ot be c lasifie as Spie el iro (s e clas 5.1);

c) pig-iro for whic a minimum c onte t is spec ifie f or a t least o e of th eleme ts n t spec ifie in c lumn 4 to 8;

d) pig-iro wh s c onte t of a t least o e of th folowin eleme ts is within th lmits in ic ate below:

Cr > 0,3 to 10.0 %

M > 0,

Ni > 0,3

T i > 0.2

t

up to th tota l c onte t of 10,O % of oth r eleme ts re ultin fom ta le 1

v >O,

w >O,

2

Annex

T his a n x is a plca le to pig-iro in th sold state

NOT - In th cas of pig-iro in th lq id sta te, spec ial re ulatio s

are to be a gre d betwe n th pro uc er a nd th purc has r

b tch In cases of dispute, a d if th re h s b e n oth r agre -

taken from e ch b tch is giv en in ta le 3

> 10 < 2

1

> 2 < 40

12

> 0<8

14

> 8 <I6

16

18

> 3 0 < 6 0

21

>6 0

24

In th ce tre of e ch pig taken from th b tch, dri a h le 12 to

(se fig re, p int I)

2 m in diameter, in s ch a w ay th t large chips are o tain d

skin zo e, which soldifies ra pidly a d is in practice fre from

s ita le size for furth r re u tio as in A.4.1.3 are o tain d

3

A.4.1.3 Sample for a na ly is for d termina tio of

A.4 1.2, u in a p p rop ria te e uipme t, ie wea r-e ista nt and,

ana ly is

The ap prop riate siz is:

-

-

pig take From this mixture it is po sible to ob ta in a sample

ana lyis, th p rep ara tio of sample s a ll be ca rrie o t in ac-

for th c emical a na lyis

a na lyis

c emical a na lyis as far as p osib le

1 F irst h le for ta kin c ips for th d termina tio of eleme ts oth r than ca rbo (s e A.4.1 )

ac orda nc with A.4.1 2

4

UDC 5 9.152.27 12.0 1.3

De criptors : iro - a nd ste l pro uc ts, pig (c astin s), c las ific atio , sampln