Bsi bs en 12892 2000 (2001)

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Incorpo ati ng

Co ri gendu mNo 1

TheEuro ea S ta d rdEN128 92:20 0 0h sthes tatusofa

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13 5 3 3 19Oc to er20 0 1 S pe llinge rrorc orec tedo fo tc over

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itss ec retary

Cros -r efer ences

TheB ritis hS ta d rdswhic himpleme ntintern tio alorEuro ea p blc ations

referedtointhisd c umentma befo n intheB S IS ta d rdsCatalogueu de rthe

s ec tionentitledªIntern tion lS ta d rdsCores po de nc eIndexº,orb us ingthe

ªFindºfac ilityoftheB S IS ta d rdsElec tro icCatalogue

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c ontrac t.Us er ofB ritis hS ta d rdsareres po s ibleforthe irc orec ta plic atio

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f omleg a lo lg a tions

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p ges2to16,a ins ideb c kc overa dab c kc ove r

TheB S Ic op rightn tic edis playedinthisd c umentin ic ate swhenthed c ument

waslas tis s ued

NORM E EUROPÉENNE

F bruary 2 0

ICS 7 18

En ls version

Founding - Equipment for t he produc t ion of lost pat t erns for t he

lost foam c ast ing proc ess

Fo d rie - Out ila e p ur la pro uc t io d mo èle p rd s

p ur le pro é é d mo la e “lo t fo m”

Gießereiwe e – Einric t un e z r Herst elu g v on

v erlore e Mo ele für d s Volformgießv era re

T his Euro e n Sta d rd wa a prov ed b CEN o 2 De emb r 19 9

CEN memb rs are b u d to c mply with th CEN/ CENELEC Intern l R eg lat io s whic stip lat e th c n it io s for giv in this Euro e n

St an ard t he stat us of a n tio al stan ard wit ho t a y lteratio Up-t o-d te lsts a d biblo ra hic l refere c s c n ernin s c n tio al

st an ard ma b o t ain d o a plc tio t o t he Ce tral Se ret ariat or t o a y CEN memb r

T his Euro e n Sta d rd e ist s in t hre oficial v ersio s (En ls ,Fre c ,Germa ).A v ersio in a y ot her la g a e ma e b tra slat io

u d r t he re p n ibi t y of a CEN memb r int o its own la g a e a d n t ifie t o t he Ce t ral Se ret ariat h s t he s me st at us a th oficial

versio s

CEN memb rs are t he n tio al sta d rd b die of A ust ria,Belgium,Cz c R ep blc ,De mark ,Finla d,Fra c ,Germa y ,Gre c ,

Ic la d, Irela d, Italy , L x mb urg, Neth rla d ,Norway ,Port ug l Sp in,Swe e ,Switz rla d a d Unite K in d m

E U ROPEA N COMMI TT E FO STA N DA RDI ZA TI ON

COMIT EU OPÉ N DE NO MALISATIO

EUR PÄISCHES K MIT E FÜ NO MUN

Cont ent s

Pa e

F reword 3

Intro u tio 4

1 Sc ope 5

2 Normat ive referen e 5

3 Terms an definit i ns 5

4 Order informa o an delvery c on it i ns 7

4.1 Ge eral 7

4.2 Points to b disc us e 7

4.3 Ma d tory informatio 8

5 Cla sific atio 8

6 Specificat i ns 9

6.1 Drawin s a d/or n meric al d ta a d/or ma ter p ttern 9

6.2 De ig atio

6.3 Su -c ont racted s rvic es 9

6.4 Ma s 9

6.5 T ooln fi n s stems 10

6.6 T ooln temp rature 10

7 Man facturin req irements 10

7.1 Mat erials 10

Pa e

7.2 Ma ufac ture 10

7.3 Co trac tio s 12

7.4 Req ire mac hinin alowanc es (R MA) 12

7.5 T olera ces 13

7.6 Markin a d la el n 13

8 Qualty c ontrol 13

8.1 In p ctio d c ume tatio 13

8.2 Sample 13

9 Us ge 13

9.1 Ge eral 13

9.2 T hermal stabi ty 13

9.3 Pre s re (c lampin a d injec tio ) 14

9.4 T ooln h n ln 14

9.5 T ooln loc at io , c on ec tio a d

alg me t 14

9.6 Pattern strip in a d h n ln 14

9.7 T ooln a s mbly 14

9.8 Prev entio of p ttern distortio 14

9.9 Rep ir a d refurbis me t 14

9.10 Pac kagin a d protec tio 14

9.1 Other re uireme ts 14

An ex A (informative) Ex ample at a dime sio al

test re ort a d a tooln c hec klst 15

Forew ord

T his Euro e n St an ard h s b e pre are b Tec hnic al Committee CE /T C 19 , Fo n ry t ec hn lo y, t he

s c retariat of which is h ld b DIN

T his Euro e n St an ard s al b given the st atus of a n tio al stan ard, eit her b p blc atio of a id ntic al tex t or b

e d rs me t, at the latest b Au u t 2 0 , a d c onflc tin n tio al stan ard s al b withdrawn at the latest b

Au u t 2 0

Ac c ordin to t he CEN/CE ELEC Intern l R eg latio s, the n tio al stan ard org nizatio s of the folowin c ou trie

are b u d t o impleme t this Euro e n Stan ard: Austria, Belgium, Cz ec h R ep blc , De mark, Finla d, Fra ce,

Germa y, Gre c e, Ic ela d, Irela d, Italy , L x emb urg, Netherla d , Norw ay, Port ug l, Sp in, Swed n, Switzerla d

a d the United Kin d m

Within its pro ramme of work, T ec hnic al Committ ee CE /T C 19 re u ste CEN/T C 19 /WG 1.3 "Pro uc tio

e uipme t, tools, fo n ry a x ilarie (e.g p t tern , p rma e t mo ld , mo ldin mat erials) to pre are the folowin

stan ard:

EN 12 9

Fo undin – Eq ip me nt fo rth pro ductio n o flo st p ate rns fo r th lo st fo am c stin p ro ce ss

T his is o e of thre of Euro e n St an ard for fo n ry p ttern a d tools Th ot her st an ard are:

prE 12 8

Fo undin – Eq ip me nt fo rth pro ductio n o flost p ate rns fo r th lo st wax c stin pro ce ss

EN 12 9

Fo un din – Pate rns, p atern e uip m e nt and core bo xe s fo rth productio o fs nd m o ulds and s nd core s

Int roduc t ion

L st p ttern pro uc tio proc es e in olve the mo ldin of a p ttern T he p ttern is the d st ro e eit her prior to or

d rin t he c astin proc es

At pre e t two proces e are c ommo ly u e :

– invest me t c astin (lo t wax proc es );

– lo t o m proc es

T his stan ard conc ern the lo t fo m proc es

T his stan ard d scrib s the s ec ificatio for tooln to pro uc e p t tern or core for the lo t o m proc es

T his sta d rd is inte d d for p rc ha ers, ma ufac turers a d fo n ers It is als inten e to e s re c orec t

interpretatio of p rt a d t ool drawin s/n merical d t a, a d to e s re p ttern e uipme t w il pro uce lo t mo ld a d

lo t c ore , s ita le for u e a d t o a sist in d terminin the u u ly u d fin d lmits of g o w ork ma s ip It st re s s

the n e for c on ultatio b tw ee the fo n er, ma ufac turer (p ttern ), ma ufacturer (tooln ) a d p rc ha er b fore

work c omme c es

T his sta d rd is inten e to a sist intere ted p rtie in pro uc in tooln for ure or d n e p ly t y re e or ex pa d d

mat erial p ttern s itable for u e to pro uc e c astin s b the lo t p ttern proc es

T here is a c omple relatio s ip b twee the p rtie who mig t b involved in s ec ifyin , ma ufac turin , ord rin a d

d sig in the e uipme t within t he sc op of this stan ard

NOT E: Fig re 1 giv es a in icatio of the relatio s ip that c ould ex ist b twee the fo r p rtie conc ern d

Fig re 1 – Mo el int er - relat i nships bet we n t he c nt rac n par t ie

T his stan ard n t o ly s ec ifie the u u l fe ture of d sig , ma ufac ture, materials, tolera c es, c ont rac tio s a d

re uire mac hinin alowanc es b t als s ecifie other fe ture s c h a u a e, c la sific atio , q alty c ontrol, markin ,

p c ka in a d stora e

1 Sc ope

T his stan ard s ec ifie the re uireme ts for to ln for t he pro uc tio of lo t p ttern b the lo t o m proces

2 Normative referenc es

T his Euro e n St an ard incorp rates b d ted or u d ted refere c e, provisio s from other p blc atio s T he e

n rmativ refere c es are c ited at the a pro riate plac es in the tex t a d t he p blc atio s are lste h re fter For d ted

refere ces, s b e u nt ame dme ts to or re isio s of a y of the e p blc atio s a ply to t his Euro e n St an ard o ly

whe inc orp rated in it b ame dme t or revisio For u d ted refere ces the lat est e itio of the p blc atio refere

to a ple

EN 10 0

Me talc pro ducts – Ty e s o finspe ctio n do cume ts

EN 2 2 6-1

ISO syste m o flm its and fits – Part 1: B ase s o fto le rance s, de viatio ns and fits (ISO 2 6-1:19 8)

ISO 8 6 :19 4

Ca tin s – Syste m o fdim e nsio nal to lerance s and m achinin alo wance s

3 Terms a d definit ions

For the p rp s s of this stan ard, the folowin terms a d d finitio s a ply :

3.1 col apsible ins rt

Part ma e in t wo or more piec es to p rmit withdraw al from a u d rc ut p t tern s rfac e

3.2 co tra t ion

Pro isio a ple to the t ooln for s rinkag oc c urin d rin t he pro uc tio of castin s

3.3 dowel register

Comp n nt w hic h e s re ac c ura y of fit or alg me t b twee matin p rtio s of the tooln

3.4 taper

Draf a gle o s rfac es of tooln p rts or lo t p ttern whic h e a le t he tooln p rts or t he lo t p ttern to b

with rawn

3.5 fix ing

On or more c omp n nts whic h e s re t hat the p rts of the tooln are h ld t og ther s c urely a d ac c urately

3.6 ins rt or lo s pie e

Part w hic h is remo e b h n or b mecha ic al me n from the p ttern b fore or d rin strip in a d is the

re o itio e in the tooln

3.7 lost foam proc s

Pattern c astin proc es in whic h a d struc tible p ttern material is u e

NOT E: T he p t tern is s ro n e b a h at re istant mat erial prior to p urin

3.8 man fa turer (patterns)

Pers n or b d re p n ible for th ma ufac ture of lo t o m p ttern

3.9 man fa turer (tool n )

Pers n or b d re p n ible for the ma ufacture of the tooln a d/or a cilary e uipme t re uire to pro uce a lo t

fo m p t tern

3.10 ma ter pattern

Mo el u e to pro uce a p ttern whic h inc lu e the a pro riate c ont rac tio s

3.1 mismatch

Ofs t c on itio s at p rtin ln c au e b mis lg me t

3.12 pattern

Fo m b s d s a e material

3.13 patt ern inje tio

Proc es of fi n the tooln c avity with ex pa d ble material

3.14 st rip in

Ac tio of remo in the p ttern from the t ooln b h n or b mec ha ic al me n

3.15 toolng

Al the e uipme t re uire for the pro uc tio of a lo t p ttern (ex cept the mac hin u e to injec t the fo m)

3.16 t oolng c vit y

Inten e s ac e in the tooln into which p ttern material is intro uc ed

3.17 t oolng fi ing system

Op nin s u e to intro uce the p ttern material into the tooln

4 Order informa on a d delvery c ondit ions

4 1 General

T here s al h ve b e a a re me t ma e a d a ex c ha g of informatio c arie o t b twee the p rcha er, t he

ma ufacturer (p ttern ), the ma ufac turer (t ooln ) a d t he fo n er b the time of ac c epta c e of the ord r, to e s re

a ful u d rstan in of the re p c tive re uireme ts of the p rtie c onc ern d

4 2 Point s to be dis us ed

As a plc able, the folowin e s ntial p ints s al b c on id re d rin t he n g tiatio stag :

– c astin material(s) a d its (their) id ntific atio ;

– n mb r of p ttern to b pro uc ed;

– n mb r of s b-eleme ts for e ch p ttern;

– p ttern a d/or c ore materials;

– drawin s a d/or n meric al d ta;

– n mb r of tooln c avitie re uire ;

– c ontrac tio s;

– joint ln s;

– p ttern joints;

– tap rs;

– c omp n nts a d id ntific atio of tooln ;

– re uire mac hinin alowanc es;

– mac hinin provisio s a d tooln finis in re uireme ts;

– tooln mat erials;

– tooln q alty c la s;

– s rfac e c on itio of the t ooln c avity;

– dime sio al tolera ces;

– p ttern st rip in a d c ooln s p ort s stems;

– tooln in p c tio re uireme ts a d in p c tio fixture ;

– ru n r/e d r p sitio s a d, if n c es ary , the s stem;

– tooln ac c es orie ;

– a s mbly ac c es orie ;

– a y other imp rtant p ramet ers s c h a s rfac e protec tio a d p ckagin for t ra s ort, stora e, v ntin a d

a s mbln ara g me ts

4 3 Man atory informa o

T he e q iry a d ord r s al inclu e informat io o :

a) n mb r of tooln s to b s p le a d the d lvery re uireme ts;

b) s ec ific atio (s) of the mat erial(s) to b u e in the ma ufac ture of the tooln ;

c) relevant drawin s a d/or n meric al d ta;

d) c ont rac tio (s) to b u e ;

e) size a d p sitio of a y g tin re uire ;

f p sitio s a d siz es of blow h le for ex pa d d mat erial;

g) informatio o tooln mo ntin , con ec tio a d alg me t ;

h) s rfac e c on itio re uire for th t ooln c avit y;

i) in p c tio (s) a d d c ume tatio re uire ;

j) rele a t q alt y c la s;

k) a y fu c tio al tests re uire ;

a d, a a plcable:

l) a dit io al pro ertie n t s ec ifie in the material sta d rd ;

m) s ec ial me s re to b taken or s ec ific atio s to b o s rved, p rtic ularly with re ard to the testin of weld ;

n) re airs of tooln ;

o) t yp of protec tio a d p c kagin ;

NOT E: Tra s ort ara g me ts c an b inclu e

p) a pro al proc ed re ;

q) stora e ara g me ts;

r) a y other re uireme ts

5 Cla sific at ion

T here s al b a a re me t ma e b t wee the p rtie c oncern d o the q alt y c la s to b a o t ed

NOT E: T able 1 giv s g id nc e for the s lec tio of metal p ttern e uipme t

Table 1 – Met al pat t ern eq ipment

injec tio mac hin s a d in olvin

hig sta d rd

Batc hwis ma ufac ture u in fo m

injec tio mac hin s a d in olvin

hig stan ard

Ma ufac ture Worked from s ld mat erial

(mac hin d) or c ast to siz e a d

s itably finis e

As for M5, b t inis in n t a

c ritic al, altern tiv ly ma e u from

s v ral p rts

Mat erial Aluminium alo s, steels a d other

alo s

As for M5

Dime sio al tolera c es In ac c ord nc e with E 2 2 6-1

a d ISO 8 6 :19 4

As for M5

6 Spe ific t ions

6.1 Draw in s and/or n meric l data an /or ma ter patterns

T he p rc ha er s al make avaia le t o the ma ufac turer (tooln ) a y n c es ary drawin s of the c astin a d/or

n meric al d t a a d/or ma ter p ttern T he id ntific atio of the relevant drawin s a d/or rele a t n meric al d ta

a d/or rele a t ma ter p t tern(s) s al b s ec ifie in the e q iry a d ord r

T he drawin (s) s al c onform to Euro e n or Int ern tio al Stan ard u le s otherwis a re d An mo ific atio s to

the drawin s a d/or n merical d ta a d/or ma t er p ttern n c es ary t o aid ma ufac ture of the tooln s al, b

a re d b t we n the p rc ha er, the fo n er, the ma ufacturer (p ttern ) a d the ma ufac turer (t ooln )

T he ma ufacturer (t ooln ) s al b re p n ible for the s a e, dime sio a d s itabi ty of the tooln b in

ma ufac ture

6.2 De ig a o

T he d sig atio of the q alty cla s o the drawin s a d other relevant d c ume ts s al c ontain t he folowin :

– the n mb r of this Euro e n Stan ard (E 12 9 );

– the q alty c la s

EXAMPLE:

EN 128 2 – M5

6.3 Su -cont ra t ed s rvic s

If the ma ufac turer (o ln ) inten s to s b-contrac t d sig or e gin erin s rvic es, h s al o tain prior a prov al from

the p rc ha er

6.4 Ma s

T he d sig s al b s c h a to minimiz e the ma s of the tooln to e s h n ln a d pre erve t he integrit y of the fin l