Tiêu chuẩn iso 00698 1975 scan

Filler rods for braze welding Determination of conventional bond strength on steel, cast iron and other metals Métaux d''''apport de soudobrasage Détermination de la résistance d''''accrochage conventionnel[.]

c onve nt iona l bond s t re ngt h on steel cast iron and

Méta x d'a p rt de so do rasa e -Détermin tio de la résista c d'a cro h g

c n e tio n le sura ier, fo te et a tres méta x

First e itio - 197 -06-01

Interntio l Org izatio for Sta ar dizatio

698-7 5

FOREWORD

IS0 (h Internatio alOrganiza t io for St an a r dizat io ) isa worldwid fe er a t io

of nat io a l stand ard s in titute

(IS0 M em ber Bo die s) Th w ork of d velopin

Internatio al Stand ard s is c a rrie o t t hrou h IS0 Tec hnica l C ommitte es Ev ry

M em ber Bo y int ere t ed in

a s bject for w hic h a Tec hnica l Commit t ee has be n set

up has t he r i ht to be repres ente o that Commit t ee Internatio al o rganizatio ns,

g ve rnme tal an n n-g vernme t al, in la is n with ISO, al so t a ke p rt in th work

Draf Internatio alStand ard s adopt ed by th Technic al Commit t ee are circ late

to t he M em ber Bodies for app roval b efore th ir aceptan e as Internatio al

Stand ard s b y t he IS Co nc il

Pr i r to 197 2, t he re ult s of th work of t he Technic al Commit t ee were p ub lis e

as IS0 R ec mme datio s; th es d cume t s are n w in t he pro e s of bein

tra nsf orme into Internatio al Stan ard s As p rt of this pro e s, Tec hnic al

Commit t ee iSO/rC4 has re iewe d IS0 Rec omme da t io R 6 8 an fo n it

t ec hnic a lly s it able for t r a nsf orma tio Internatio alSt a nda rd IS0 6 8 t heref or e

repl ac s IS0 R ec mme datio R 6 8-19 8 tow hic h it ist ec hnic a lly id ntic a l

IS0 Rec omme da t io R 6 8 was app ro ve by th Me mbe r Bod ies of th folowin

c ou t rie :

Au t ralia

Aust ria

Brazi

Canada

Chie

De nmark

Egypt, Ara b Rep of

Fran e

In ia

Irela nd

Israel

Italy

J ap n

Netherlan s

Ne w Zealan

Por t u g a I

R omania

Sp in

Sweden

Sw itz rlan

Unite Kin d m

U.S.S R

Yu g osl av ia

Th e M em ber Bod ie of t he folowin cou t rie e pre s d disap pro a l of th

Re omme datio o t echnica l ground s :

Belgium

German

So t h Afric a, Rep of

U S.A

Th M em ber Bo y of t he folowin c u try dis ap pro e th tran formatio of

IS O/R 6 8 into an Internatio al St andard :

Ge rman

O Intern tio alürg nlzato for Sta d rdizatio ,19 5

Print ed in Switzerla d

4853903 0070253 7

678-75

O INTRODUCTION

This Int er na t io a l Stan ard is a comp a nio to IS0 6 8,

Fier rods for brae weldin - Determin tio o f

c ara teristics ofde osited metal

This Int erna t io a l Stan ard s pe cifie s meth d

of

test for

fi er ro s for braz weldin , to d t ermin t he c nv ent io a l

bo d st re gt h o

- ste l

- c st iro ,

- ot her metals an d alo ys

IS0 8 , Ste l -Te sie testin

Th e c onv ent io al bo d st re gt h of a braz weldin fi er

metal o a p arent met al isd t ermin d by mean of a te sie

test in which t he stres is ap ple to the n rmal

cros s-s ectio nal area of the test pie ce

4.1 As embly

4.1 Ty e of as emblya d c oic of p re t metal

4 1.1.1 In o rde r to d t ermin t he convent io a l bo d

st re gt h of braz weldin fi er metals o ste l a sin le Ve

but joint as embly with ut a ga, as s ho wn in fig re 1,

shal be braz weld ed

4.1.1.2 Th plates s hal be of mid ste l Th facs of th

be el , which s hal be s moo th, as wel as t he imme iat ely

s rrou din areas (o ver a width of 10 to 15 mm), shal be

clean d of o id an d oth r surfac c onta minat io an d

degreas d bef ore as em bl y

4.1.2 Op ratin c nditio s

4.1.2.1 Th thickn s of t he p late s an d t he op era t in

c on it io s sh l be a s s p e cifie d in tab le 1, accordin tot he

dia met er of t he fi er rod )

Diameter o fi er ro ,

rnrn

T hick ne s, e, o

plate , mrn

Ac tyle e c n umptio

of blowpip , I/h*

Numb r of run

TABLE

1

1 0 1 0 200 2 0 3 5

2 to 3

?i

* Th o erator s o ld e ns re th t th a etyle e c n umptio of

his blowpip c re p n s a clo ely a p s ible to th va lu s ow n

4.1.2.2 The asem bly s hal be mad by the lef t w ard

me tho d, weldin up ward, t he plate s bein in a slg tly

inc lin d po itio (a proxima tely 3?) As t he st raig t enin

of th plate a f t er weldin is forb id e , preca ut io s shal be

t a ke tok ep th asem bl y as flat as po s s ible

Th blow pipe s hal be f ed with c orr ec t ly purifie ac tyle e

an d with oxyg n havin a minimum purity of 9 %.Th e

flame s hal be n utr l,Z) u n les ot herwis re omme d d by

t he manufa ct urer of t he fi er r od Th nat ure of the flame ,

whet her n ut ra l or o idizin , s hal be s tate in the test

repor t

4.1.2.3

If a cle anin flu isnec s ary, t he flu a p p ropria t e

tot he fi er ro b ein tes ted shal be app lie

1 ) Ca re s o ld b ta e toe ns r e a le el joint a s mbly

2) A flame iss a id to b n utral w he th ratio of o y e to a etyle e is n arly e u l to I

Interntio l Org izatio for Sta ar dizatio

4.2 Te ns ile tests

4.2,l Pre arato of te sie te t piee

4,2.1.1 S ix test piec s s al be take n as sho wn in fig re 2

4.2.1.2

Afer remo al of th e c s met a l by ma c hinin

from t he t o fac s, t he rectan ular te s ile test piec s s al

be machin d as sho wn in fig re 3 Th e g s s al be

mac ine d rec t iln a r, p a ra llel an rou d d to a radiu n t

e xce e din 2 mm

4.2.2 Te sie te t req ireme ts

Th tests shal be mad at a mbie t temperature, u nl es

o the rwise sp e cifie d, an d in ac ord an e with IS08 2

4.3 Expres sio of res ults

Wh ere er t he bre ak occ rs, the c onv entio al bo d stre gth,

e pre s d in ne wto ns per sq u are mi imetre, s hal be

obt ain d by dividin t he total.brea kin load , e pre s d in

n wtons, by t he initial cros s-s ectio nal area of th testpie e,

e pre s d in sq uare mi imetr es T he po itio of t he b reak

s hal be s tate in th testr epor t

STRE GTH ON CAST IRON

5.1 As embly

5.1 , Typ of as mblya d c oic of p re t metal

5.1.1.1 In o rde r to d termin th c onv ent io a l bo d

s tre ngth of braz w eldin fi er me tals o n c st ir on, a d uble

Ve but joint as em bl y with a ga mad be twe e n beve lle

gre cast iro b rs, as sho wn in f ig re 4, shal be braz

we lde d

5.1.1.2 Th b rs shal be of gre c st iro havin a te sie

stre gth of a bo t 2 0 N/ mm*

5.1.1.3 Th facs of the be el, as w el as the imme ia t ely

s rrou din are s (o ve r a width of 10 to 15 mm), s hal be

car efuly machine d o r fie , but n t groun , an d t he

d greas d bef ore as embly

5 1 2 Op ratng c ndi o s

5.1.2.1 Th operat in c n itio s s hal be as s p e cifie d in

tab le 2

TABLE2

1 Diameter of fi er ro ,

2 3, 15

Ac tyle e c n umptio of

blowpip , I/h*

2 0 to 315, a c rdin to

diameter offi er ro

I

Th o erator s o ld ens ure th t th a etyle e c n umptio of

his blowpip c r re p n s a clo ely a p o s s ib le to th v lu s own

5.1.2.2 Th as em bly s hal be m ade by the lefward

metho , t he b rs b e in h r i o tal

Th blow pipe s hal be fe d with c r r ectly purifie ace tyle e

an with oxyge h.avin g a minimum purity of 9 % Th

flame s hal be ne utr l,' u le s otherwis e re co mme nde d by

t he man f ac t ur er of th fi er ro Th na t ure of th flame,

wh ther n utr al or o idizin , s hal be s tate d in th test

r epor t,

5 1 2 3 If a cle anin flu is nec sary, t he flu a propriat e

tot he fi er ro b ein te s te d s al be ap plie

5 3 Op ratng pro ed re

Th.e opera t in pro e ure s hal be as folows :

-

a ro t ru s hal be m ade;

- t he asem bl y s hal be tur ne over an a ro t ru shal

be m ade o n the op posite si de;

- eac fac of t he be els shal be "but t ered";

- o e be el s hal be fi e to half itsd p th;

- aft er turnin over, th s c n d be el s hal be fi e

c omplet ely by o e o r two ru s ;

- aft er turnin o er again , t he first be el s hal be

c mpletely fi e

5.2 Te sie tests

5.2.1 Pre arato ofte sie te t piee

5.2.1.1 Thre e testpie e s hal be take n

1) A flame is said to b n utral wh n th ratio of o y e to a etyle e isn arly e u l to1

inf ig re 5

6.1 P rinc ip le

In ord r to d t ermin t he convent io a l bo d st re gt h of 5.2.2 Te sie te t req ireme ts

Th

t es t s shal be m ade at ambie t temp r atur e, braz weldin fi er ro ds o pa rent metals ot her t han c st

ot herwis s p ecifie , an in ac ord an e with IS0 8 iro an d ste l an d o alo s, two cass mu t be

co nside re :

5 3 Expre sio of re u lts

a) Wro g t m etals : pro cee d as in ica t ed for ste l

(se cl au se 4);

b) Ca t met a ls: pro cee d as in ic at ed for cast iro

Wh ere er t he b reak o cc rs , t he c onv ent io a l bo d stre ngth,

e pre s d in n wt on Der sau are mi met re s al be (se cl au e 5)

I

obt ain d by div idin t he' total breakin lo ad, e pre s d in

ne wto ns, by t he initial cros s-s ectio nal area of t he test pie e,

6.2 As em bly

e pre s d in squ are mi met res The po it io of t he br ea k

s al be state d int he test repor t

For eac t y pe of p a re t metal, th opera t in p ro e ure

s hal be those a ppropriat e tothat me tal

I

Interntio l Org izatio for Sta ar dizatio

FIGURE 2 - Po itio oftest p ie c e s (ste l)

c

4 0

FIGURE 3 -Dime sio s of pre are te t pie e (ste l)

ao

100

FIGURE 4 -Pre aratio of a sse mbly for brazeweldin ( c ast iro )

FIGURE 5 - Dime sio s of pre are te t pie e ( c a st iro )