Tiêu chuẩn iso 09442 1988 scan

INTERNATIONAL STANDARD IS0 9442 First edition 1988 10 01 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEMYHAPOAHAR OPTAHMBA~MR n0 CTAHjJAPTM3A~MM Steel H[.]

INTERNATIONAL STANDARD 9442

Fi rst e di ti o n

19 8-10-01

INT ER A T ION L OR A NIZA T ION FOR STA ND R IZA T ION

OR A NISA T ION INT ER AT I NA LE D NORMA LISA T ION

MEMYHA POA HA R OPT A HMBA ~MR n0 CT AHjJA T M3A~M

A cier - Plats rain&s lamin& B chau p ur lame de re sorts - Dimensio s et to rancs

Re fe re nce n umbe r

Foreword

IS0 (he Internatio al Organiz tio for Stan ardiz tio ) is a worldwide federatio of

natio al stan ards b die (IS0 member b die ) T e w ork of preparin Internatio al

Stan ards is n rmaly c ried o t thro g IS0 te h ic l com ite s Ea h member

b d intere ted in a su je t for which a te h ic l commite ha be n e tablshed ha

the rig t to be repre ented o that com ite Internatio al organiz tio s, g vern-

mental an n n-g vernmental in laiso with ISO, also tak e part in the work IS0

colab rate clos ly with the Internatio al Ele trote h ic l Com is io (IE ) o al

maters of ele trote h ic l stan ardiz tio

Draf Internatio al Stan ards ad pted b the te h ic l commite s are circulated to

the member b die for ap ro al before their a c ptanc a Internatio al Stan ards b

the IS0 Co nci T hey are ap ro ed in a cordanc with IS0 proc d re req irin at

le st 75 % ap ro al b the member b die v tin

Internatio al Stan ard IS0 9 4 wa prepared b Te h ic l Com ite ISO/T C 17,

Ste l

0 Internatio al Organiz tio for Stan ardiz tio , 19 8 0

Steel -

T his Internatio al Stan ard ap le to h troled rib ed an

gro ved sprin ste l with the dimensio s stated in table 1, of

the ste l grade lsted in claus 4, which are preferably us d for

rai vehicle co structio

T he folowin stan ard co tains pro isio s which, thro g

ref erenc in this text, co stitute pro isio s of this Internatio al

Stan ard At the time of p blc tio , the editio in ic ted wa

vald Al stan ards are su je t to revisio , an partie to

agre ments ba ed o this Internatio al Stan ard are enco r-

aged to in e tigate the p s ibi ty of ap lyin the most re ent

editio of the stan ard lsted below Members of IE an IS0

maintain registers of curently vald Internatio al Stan ards

IS0 68 -1 : 173, He t re ted ste ls, alo stels an fe -

cut n stels - Part 1 : Stels for h tformed an het

tre ted sprin s

F r dimensio s s e table 1 F r toleranc s s e table 2

Dimensio s in mi metre

‘/

b

0

T able 1 - Dime sion

I

1 6 12,4

12

T able 2 - T olera c s

Dimensio s in mi metre

Rol n toleranc s

1

W idth b

* 0,5

T hick ne s d

2

3

Co vexity

0

4

Co c vity

T e fa e c n be slg tly co c ve b t the re ultant total thick ne s shal be red c d b n more than the value below :

Red ctio of thick ne s (diferenc

Nominal thick ne s of le f

betwe n the thick ne s at the ed e an

the c ntre of the le f

d< 10

< 0,2

10 < d

< 0,3

5

Lateral ofs t of the gro ve an the rib

< 0.3

6

Straig tenin defe t q

DF T

Normal straig tenin : T e deviatio is me sured o er the total len th L of

Hotroled rib ed an gro ved sprin ste l a cordin to this

Internatio al Stan ard shal be pro uc d from ste l grade

a cordin to IS0 6 3-14, namely :

6.1 Exte t of te tin

- preferably from 5 Si 7;

- in exc ptio al c s s from 51 CrV 4

T e de ired ste l grade an the tre tment co ditio shal be

stated in the de ig atio o order

5.1 F r the su ply of h troled rib ed an gro ved sprin

ste l the ty e of len th a cordin to table 3 ap ly

5.2 W hen ordered b weig t, the len th may vary betwe n

the maximum an minimum dimensio s spe ified for the

man fa turin len th

If an a c ptanc te t is agre d, the n mber of bars which shal

be te ted for a cura y to siz b me surements at the

man fa turer’s work s shal also be agre d when orderin

6.2.1 T e thick ne s an width shal be me sured at le st

15 m from the en of the bars when man fa turin len ths

are su pled an at an p int when fixed or exa t len ths are

su pled

6.2.2 T e thick ne s d shal be me sured o tside the are of

the ed e chamfer of the side fa e

T able 3 - Type of le gth a d tolera c s on le gth

Value in mi metre

T pe of len th

Ran e’)

Len th

Or derin data

T oleranc

for the len th

Man fa turin

len th 2)

Fixed len th

3 6 to8 0

f 10 3)

No e*)

De ir ed fixed len th,

mm

De ir ed exa t

f 2 or

len th an de ired

k 10 )

toleranc , m

1) En uirie sh uld be made to the man fa turer a to whether sh rter or gre ter len ths c n be su pled

2) Rib ed an gro ved sprin ste l c n also be su pled in lmited man fa turin len ths with a len th

ran e to be stated when orderin T e span betw een the sh rte t an gre te t len th of this ran e shal

be at le st 2 0 6 mm (or example, 6 0 6 to 8 0 0)

3) W hen orderin , the total spans for the permis ible deviatio s may, b agre ment, be aran ed entirely

o the plus side, for example :

+ 2ocl

o m (inste d of k 16 m ) in the c s of fixed len ths, or

+5

o m (inste d of f 2 mm) in the c s of exa t len ths

UDC 6 9.14.016.27-12 4-40 6

De criptors : ste ls, iro - an ste l pro ucts, h t roled pro ucts, flat bars, spe ific tio s, dimensio s, te ts, dimensio al me surements