AS 1627.7-1988

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Web Check-up

AS 1627.7—1988

Australian Standard



Metal finishing—Preparation and

pretreatment of surfaces

Part 7: Hand tool cleaning of metal

surfaces

b b u u t t i i o o n n

o o r r u u s s e e o o n n n n e e t t w w o o r r k k p p r r o o h h i i b b i i t t e e d d . .

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AS 1627.7—1988

Australian Standard



Metal finishing—Preparation and

pretreatment of surfaces

Part 7: Hand tool cleaning of metal

surfaces

L L i i c c e e

n n s s e e d d t t o o W W A A R R I I N N T T H H A A R R A A P P A A N N I I C C H H o o n n 2 2 3 3 J J a a n n 2 2 0 0 0 0 2 2 . . S S i i n n g g l l e e u u

s s e e r r l l i i c c e e n n

c c e e o o n n l l y y . . S S t t o o r r a a

g g e e , , d d i i s s t t r r i i b b u u t t i i o o n n

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Australasian Institute of Metal Finishing Australasian Institute of Metal Finishing Bureau of Steel Manufacturers of Australia Bureau of Steel Manufacturers of Australia Confederation of Australian Industry Confederation of Australian Industry Department of Defence

Department of Defence

Metal Trades Industry Association of Australia Metal Trades Industry Association of Australia Royal Australian Chemical Institute

Royal Australian Chemical Institute Society of Automotive Engineers

Society of Automotive Engineers   Australasia Australasia

T

Telecom Australiaelecom Australia

University of Queensland University of Queensland

Review

Review of of Australian Australian Standards.Standards. To keep abrTo keep abreast of progress in industryeast of progress in industry, Australian Standards are subject to, Australian Standards are subject to periodic review

periodic review and are and are kept up kept up to date to date by the by the issue of issue of amendments or amendments or new editions new editions as necessary. It as necessary. It is important is important therefore that Standards users ensure that they are in possession of the latest edition,

therefore that Standards users ensure that they are in possession of the latest edition, and any amendments thereto.and any amendments thereto. Full

Full details of all Australian Standar details of all Australian Standar ds and r ds and r elated publications will be found in the Standar elated publications will be found in the Standar ds Australia Catalogueds Australia Catalogue of Publications; this information is supplemented each month by the magazine ‘The Australian Standard’, which of Publications; this information is supplemented each month by the magazine ‘The Australian Standard’, which subscribing members receive, and which gives details of new publications, new editions and amendments, and of subscribing members receive, and which gives details of new publications, new editions and amendments, and of withdrawn Standards.

withdrawn Standards.

Suggestions for improvements to Australian Standards, addressed to the head office of Standards Australia, are Suggestions for improvements to Australian Standards, addressed to the head office of Standards Australia, are welcomed. Notification of any inaccuracy or ambiguity found in an Australian Standard should be made without welcomed. Notification of any inaccuracy or ambiguity found in an Australian Standard should be made without delay in order that the matter may be investigated and appropriate action taken.

delay in order that the matter may be investigated and appropriate action taken.

This

This Standard was issued in draft form Standard was issued in draft form for comment as DR 86029.for comment as DR 86029.

L L i i c c e e

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AS 1627.7—1988

Australian Standard



Metal finishing—Preparation and

pretreatment of surfaces

Part 7: Hand tool cleaning of metal

surfaces

First published as CK9. 7—1967. First published as CK9. 7—1967.

Revised and redesignated AS 1627.7—1977. Revised and redesignated AS 1627.7—1977. Second edition 1988.

Second edition 1988.

PUBLISHED

PUBLISHED BY STANDARDS AUSTRALIA BY STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA) (STANDARDS ASSOCIATION OF AUSTRALIA) 1 THE CRESCENT, HOMEBUSH, NSW 2140 1 THE CRESCENT, HOMEBUSH, NSW 2140

ISBN

ISBN 0 7262 5268 9 0 7262 5268 9

L L i i c c e e

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1

1662277..99 ——Pictorial surface preparation standards for painting steel surfaces.Pictorial surface preparation standards for painting steel surfaces.

16

162727.1.100 ——Cleaning and preparation of metal surfaces using acid solutions (nonCleaning and preparation of metal surfaces using acid solutions (non immersion). immersion). CONTENTS CONTENTS Page Page F FOORREEWWOORRDD . . . .. . . 33 SE

SECTCTIOION 1N 1.. SCSCOPOPE AE AND ND GEGENENERARALL 1

1..11 SSCCOOPPEE . . . .. . . 44 1

1..22 RREEFFEERREENNCCEEDDDDOOCCUUMMEENNTTSS . . . .. . . 44 1

1..33 DDEEFFIINNIITTIIOONNSS . . . .. . . 44 1

1..44 SSUURRFFAACCEERREEQQUUIIRREEMMEENNTTSS . . . .. . . 44 SE

SECTCTIOION 2N 2.. MEMETHTHODODS OS OF OF OPERPERAATITIONON 2

2..11 EEQQUUIIPPMMEENNTT . . . .. . . 55 2

2..22 PPRREELLIIMMIINNAARRY Y CCLLEEAANNIINNG G AANND D DDEESSCCAALLIINNGG. . . .. . . 55 2

2..33 HHAANNDDTTOOOOLLCCLLEEAANNIINNGG . . . .. . . 55 2

2..44 FFIINNAALLCCLLEEAANNIINNGG . . . .. . . 55 2

2..55 AAPPPPLLIICCAATTIIOON N OF OF CCOOAATTIINNGG . . . .. . . 55 2

2..66 SSAAFFEETTYYPPRREECCAAUUTTIIOONNSS . . . .. . . 55 A

APPPPEENNDDIIX X AA. . PPUURRCCHHAASSIINNG G GGUUIIDDEELLIINNEESS. . . .. . . 77



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Care should be taken to should be taken to ensure that material used is from the current edition of ensure that material used is from the current edition of the Standard and that it is the Standard and that it is updated whenever the Standard is amended orupdated whenever the Standard is amended or revised. The number and date of the Standard should therefore be clearly identified.

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L i i c c e e

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3

3 AS AS 1627.7—19881627.7—1988

FOREWORD FOREWORD

H

Haanndd ttooooll cclleeaanni ni ngg ccaann bbee aann aacccceeppttaabbllee mmeet ht hoodd ooff ssuurrf af accee pprreeppaarraatti oi onn f of orr mmiilldd iintnteeririoorr anandd exexteterrioiorr atatmomospsphheeriricc exexppoosusureress,, anandd foforr mamannyy mamaininttenenaannccee sisitutuaatitioonnss w

whheerree ppaai ni nt st s ooff ggoooodd w ew ettt at abbi li li ti tyy aarree uusseedd.. HHaanndd tto oo oll cclle ae anni ni ngg i si s t ht hee l el eaasstt eef ff feecctti vi vee m

metethhodod ofof ssururffacacee prprepepararaatiotionn foforr dduurarabibilitlityy ofof papainintt cocoatatiingngss.. H

Haanndd t ot oooll ccl el eaanni ni ngg i si s aann eexxppeennssiivvee,, l il im im itteedd ccl el eaanniinngg mmeetthhoodd wwhhiicchh i si s ssl ol oww aanndd p

phyhyssicaicallllyy aardrduuououss,, anandd sshohouuldld oonnlyly bebe coconnsisidedereredd whwheenn popowewerr totoooll oror aabrbraasisivvee blblasastt ccleleaanininngg mmetethhododss cacannnnoott bbee uusesedd.. ThThesesee memeththoodsds araree ffasastterer anandd momorere effeffecectivtive.e. IItt wiwillll nnoott reremomovvee aallll rresesiidudueess ofof rrusustt oror otothheerr cocorrrorossioionn pprorodduucctsts,, nonorr wiwillll itit rrememovovee ffiirrmmllyy aaddhheerreenntt mmiillllssccaallee.. FFoorr ssmmaallll lliimmiitteedd aarreeaass,, ssuucchh aass ssppoott cclleeaanniinngg ffoorr ma

mainintentenanancece prprimiiming,ng, hahandnd clcleaeaniningng mamayy susuffifficece,, eveevenn foforr papaintintss reqrequiuirinringg veveryry clcleanean surfaces. surfaces. COPYRIGHT COPYRIGHT L L i i c c e e n n

s s e e d d t t o o W W A A R R I I N N T T H H A A R R A A P P A A N N I I C C H H o o n n 2 2 3 3 J J a a n n 2 2 0 0 0 0 2 2 . . S S i i n n g g l l e e u u

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1.1 SCOPE.

1.1 SCOPE. ThisSThisS tantandadardrd dedescrscribeibess procprocedueduresres anandd eeququipipmementnt foforr ththee prpreepapararatitionon,, byby hahandnd totoolsols,, ofof memetatall ssuurrffaacceess ttoo wwhhiicchh pprrootteeccttiivvee ccooaattiinnggss aarree ttoo bbee ssububsseqequueenntltlyy apapppllieiedd,, aanndd ssppececififieiess susurfrfaaccee fifininishsh requirements.

requirements.

N

NO TO TE :E : A pA pp ep en dn di xi x AA cco no nt at ai ni nss aad vd vi ci cee aan dn d rre ce co mo mm em en dn da ta ti oi on sn s o no n iin fn fo ro rm am at it io no n w hw hi ci chh sshhoouul dl d bbee ssuuppppl il ie de d b yb y tth eh e ppu ru rc hc haasseerr a ta t tth eh e tti m ei m e ooff iin qn qu iu ir yr y o ro r o ro rd ed er .r .

1

1. 2 . 2 RRE FE FEER ER ENNC EC ED D DDOOCCUUM EM EN TN TSS.. TT hehe d

doocucumemenntsts bbelelooww araree rerefeferrredred ttoo iinn ththisis StStananddaardrd.. AS

AS 1

1662277 CCooddee ooff pprraaccttiiccee ffoorr pprreeppaarraattiioonn aanndd p

prreettr er eaattmmeenntt ooff mmeettaall ssuurrf af acceess pprriioorr ttoo pr

proteotectctiveive cocoatiatingng P

Paarrtt 11:: DDeeggrreeaassiinngg ooff mmeettaall ssuurrffaacceess u

ussiinngg ssoollvveenntt oorr aallkkaalliinnee ssoluolutiotionsns (A(ASS 16162727.1.1))

P

Paarrtt 99:: PPiiccttoorriiaall ssuurrffaaccee pprreeppaarraattiioonn ssttaannddaarrddss ffoorr ppaaiinnttiinngg sstteeeell ssurfurfaceacess (AS(AS 1616227.7.9)9)

1

1771155 SSeelleeccttiioonn uussee aanndd mmaaiinntteennaannccee oof f res

respipiratoratoryry proprotectectivetive dedevicviceses 1

1771166 RReessppiirraat ot orryy pprroot et ecctti vi vee ddeevvi ci ceess

1

1.3 .3 DEDEFINFINITITIOIONNS.S. FFoorr tthhee ppuurrppoossee ooff tthhiiss Sta

Standndarard,d, ththee defdefiniinitiotionn belbelowow apapplplieies.s.

Hand

Hand tooltool cleancleaninging— a— a mmeetthhoodd ooff pprreeppaar ir inngg mmeettaall ssuur fr fa ca ceess pprri oi orr t ot o ppaaiin tn tiin gn g,, bbyy r er emmoovvi ni ngg l ol ooos es e m im illll sscacalle,e, rurusstt oorr ototheherr cocorrrrososiionon prprododuuctctss anandd papaiintnt,, byby m

meeaannss ooff hhaanndd wwi ri ree bbrruusshhi ni ngg,, hhaanndd ssaannddiinngg,, hhaanndd ssccrraappiinngg,, hhaanndd cchhiippppiinngg ((sseeee FFoorreewwoorrdd)) oorr aa co

combmbinainatitionon ofof thethesese metmethohodsds.. 1.4

1.4 SURSURFACE REQFACE REQUIREUIREMENTS.MENTS. 1.

1.4.4.1 1 SteeSteel.l. SuSurrfafacceses sshahallll bebe prprepepaareredd ttoo cocommplplyy w

withith ononee ofof ththee ffollollowowiningg cclalassseses,s, aass sspepeccififiedied:: ((a )a ) CCl al assss 11—— aal ll l l ol ooossee m am atte re ri ai all rre me moovveedd..

((b)b) CClalassss 22—— aallll lloooossee mamateterriaiall reremomovveed,d, ppluluss sosommee po

polilishishingng oror scscratratchichingng toto babarere memetatal,l, p

prroodduucciinngg aatt l el eaasstt aann eeqquuiivvaalleenntt t ot o S

Stt 22;; ssoommee aarreeaass mmaayy bbee eeqquuiivvaalleenntt ttoo S tS t 33.. ((S eS eee AASS 11662277..99..))

1.4

1.4.2 .2 Metals oMetals other thather than steen steel.l. SurfaSurfacece prepreparparatioationn iiss ttoo bebe spspeecciifiefiedd..

NO

NOTETE:: GuGuididanancece onon susurfarfacece preprepapararatitionon ofof liglightht memetatalsls iiss gigivevenn iinn TTa ba bl el e 2 .2 .22.. COPYRIGHT COPYRIGHT L L i i c c e e n n

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5

5 AS AS 1627.7—19881627.7—1988

S

SE CE CTTI OI ONN 22.. MMEET HT HO DO DSS O FO F O PO PE RE RAAT IT IO NO N

2.1

2.1 EQUIEQUIPMENT.PMENT. HaHanndd clcleaeanniningg ttoooolsls coconnsisistst oof f cchihippppiningg hahammmemerrs,s, hhanandd sscrcrapapeersrs,, wwireire brbruushshees,s, anandd ssururffacacee cocoaatetedd ababrrasasiiveves.s. SpSpececiaialllyly sshahappeedd scscrrapapererss aarere sosommetietimemess nenececesssasaryry.. TTunungsgsttenen cacarbrbiidede--titippppeedd sscrcraappererss aarere rrececoommmemendndeedd foforr ususee oonn ststeeelel susurrfafacceses o

onnlyly.. CChihippppiingng hahammmemersrs sshohouuldld nnoott bbee uusseedd onon lilighghtt me

metaltal susurfacrfaceses.. S

St et eeell bbr ir is ts tlle se s ooff w iw ir er e bbr ur usshheess ssh ah al ll l hhaavvee s us ufff if icci ei enntt rrigigiididittyy ttoo clcleaeann ththee ssururfafaccee,, anandd shshaallll bebe kkeeptpt frfreeee of of eexxcceessss ffoorreeiiggnn mmaattt et err,, aanndd bbee ddiissccaarrddeedd wwhheenn nnoo llononggeerr efeffefecctitiveve.. HaHanndd sscrcraappeersrs shshaallll bebe kkeeptpt shshaarprp eenonouugghh toto bebe efeffefectctivive.e.

A

Abbrarasisivvee clcloothth oror papappeerr shshoouuldld bebe ofof aa grgradadee ssuuititababllee ffoorr t ht hee i ni ntteennddeedd cclleeaanniinngg.. TToooo ffi ni nee mmaayy ggiivvee lli ti tttl el e cclleeaanniinngg aanndd ttoooo ccooaarrssee mmaayy ccaauussee ssccrraattcchheess,, eespspeeciciaallllyy onon nnonon-f-feerrorrousus memetatall ifif ususeded drdryy.. ‘W‘Wetet anandd d

drryy’’ ppaappeerr,, uusseedd wweett wwi ti thh wwaatteerr,, w iw il ll l i ni nccrreeaassee t ht hee sspepeeedd anandd ccleleaanininngg efeffficiicienencycy––ththee ssururffacacee sshohouuldld bebe d

drri ei edd w iw itthh ccl el eaann c lc lootth sh s a na ndd nnoott l el efftt ttoo ddr yr y.. 2

2..2 2 PPRREEL IL IMMIIN AN ARRY Y CCLLE AE ANNIIN G N G AANNDD DESCALING.

DESCALING. OOilil,, grgreaeasese anandd otothherer sisimimilarlar ffororeeigignn m

maat tt te re r,, aanndd ssool ul ubbllee ffl ul uxxeess aanndd ffuum em e ddeeppoos is it st s f rf roomm aarereaass adadjajacceentnt toto rerecceentnt weweldld rrununss,, shshaallll bbee rrememoovveedd b

byy ssololvvenentt clecleananiningg (s(seeee ASAS 1616227.7.1)1) oorr bbyy frfreseshh wawateterr wa

washshinging,, asas apapprpropopriatriate.e. H

Heaeavvyy rurustst scscalalee,, whwhenen ppreresesennt,t, shshalalll bbee looloosesenneded byby h

haanndd hhaammmmeerriinngg,, cchhiippppiinngg oorr ssccrraappiinngg oorr bbyy aa ccomombibinanatitionon ofof thethesese..

C

Chiphippinpingg anandd scscraprapiningg araree ususuauallylly carcarrieriedd ououtt prpriorior toto aanyny wwireire brbruusshihingng ofof ststeeeell ssuurrfafaccees.s. ChChipipppiningg isis nnoott rrececoommmemennddeedd foforr sosoftft memetatall ssuurfrfacacees.s. IIff sscrcrapapiingng iiss u

usseded gogouugginingg ofof ththee susurrfafaccee mmetetaall shshaallll bbee aavvooidideedd.. 2.

2.3 3 HAHAND TOOND TOOL CLEANL CLEANINING.G. LooLoossee milmillsclscalale,e, aanndd lloooossee oorr nnoonn--aaddhheerreenntt rruusstt ((oonn sstteeeell)) aanndd ccororrrososiionon pprorodduucctsts onon lilighghtt mmetetalsals shshaallll bebe remremovoveded b

byy hhanandd wiwirere brbruushshiningg,, hahanndd sasanndidingng,, hhanandd sscrcraapipinngg o

orr byby aa cocommbibinanattioionn ofof ththeessee memeththoodds,s, ttoo prproodducucee tthehe re

reququireiredd ststanandadardrd ofof susurfrfaceace ppreprepararatiationon dedescscribribeded inin T

Tabablleses 2.2.11 aanndd 2.2.22.. On

On preprevioviousluslyy papainteintedd susurfacrfaceses,, looloosese oror nonon-n-adhadhereerentnt p

paai ni ntt sshhaal ll l bbee r er emmoovveedd bbyy ssccr ar appiin gn g.. T hT hiic kc k e de dggeess oof f rreemmaaiinniinngg oolldd ppaaiinntt sshhaallll bbee ffeeaatthheerreedd bbyy hhaanndd ssaannddiinngg ssoo tthhaatt t ht hee rreeppaaiinntteedd ssuurrffaaccee wwiil ll l hhaavvee aa ssmomooothth apapppeaeararanncece.. TThehe remremaiainniningg ololdd ppaiainntt shshaallll bbee eexaxamminineedd fforor aaddhehesisioonn byby pprorobbiningg wiwitthh ththee blbladadee oof f aa ppuuttttyy knkniifefe..

T

Thhee aacccceessssiibbllee ppoorrttiioonnss ooff ppaarrttiiaallllyy eenncclloosseedd sstrutrucctuturarall mmeembmbeersrs sshhalalll bebe ccleleaanneded.. OnOn nneeww wwororkk,, aarereaass wwhihicchh areare ininaacccceessssibibllee afafteterr aasssseembmbllyy shshalalll bebe cl

cleaeanenedd aandnd ccoaoatetedd bebefoforere asassesembmbly.ly. Sp

Spececialial attattenentiotionn sshahallll bebe gigivenven toto ririvevett heheadads,s, crcrackacks,s, cr

creveviceices,s, lalapp joijointsnts,, filfilletlet wweldeldss anandd rere-e-entrntranantt ananglgleses u

usisinngg aa ccomombbininaatitionon ofof tootoolsls asas rereqquuirireded.. H

Haanndd ttoooollss sshhoouulldd bbee uusseedd iinn ssuucchh aa wwaayy tthhaatt nnoo b

buur rr rss oorr sshhaarrpp eeddggeess aarree lle fe ftt oonn t ht hee ssuur fr faaccee,, aanndd nnoo sshhaarrpp ccuuttss aarree mmaaddee iinn tthhee mmeettaall ssuurrffaaccee.. IIff ssuucchh de

defefectscts ococcucur,r, ththeyey sshahallll bebe remremovoveedd byby hahandnd sansandiding.ng. O

Onn ssteteelel ssururfafaceces,s, ttununggststenen cacarbrbiidede--titippppeedd scscrarappererss m

maayy bebe ususeedd.. 2.

2.4 4 FIFINAL NAL CLECLEANANINGING.. AAllll rreessiidduuaall dduusstt aanndd lloooossee mmaatteerri ai all sshhaallll bbee r er emmoovveedd f rf roomm t ht hee ssuurrf af accee,, u

ussiningg vavaccuuumum,, ddryry ccomomppreresssesedd aiairr oror aa clcleaeann brbruushsh.. A

Allll ooiill,, ggrreeaassee,, eettcc,, lleefftt oonn tthhee ssuurrffaaccee sshhaallll bbee rre me moovveedd bbyy s ws waabbbbiin gn g wwi ti thh aann aapppprrooppr ir iaat et e ssool vl veenntt ((seseee AASS 11662727.1.1)) oror ooththeerr aapppprropoprriaiatete clcleaeanininngg agageentnt.. A

Annyy rresesididuueess susucchh asas sasalltsts oror acacididss leleftft oonn ththee ssururffacacee sshahallll bbee ththoororouugghhlyly wwasashheedd ofofff wwithith frfreeshsh wwataterer anandd tthehe ssururfafaccee shshalalll bebe ddririeded imimmemeddiaiatetelly.y.

2 .

2 .5 5 A PA PP LP LI CI CA TA TI OI ON N O F O F C OC OA TA TI NI NGG.. ThTh ee aappprpropoprriaiatete prprootetecctitiveve cocoaattiningg sshhalalll bebe apappplilieded nonott llaatteerr tthhaann tthhee ssaammee ddaayy oonn wwhhiicchh tthhee cclleeaanniinngg iiss u

unndedertrtaakkeenn,, aanndd shshaallll bebe apappplilieded asas ssoooonn asas poposssisiblblee aafft et err cclleeaanniinngg hhaass t at akkeenn ppl al accee aanndd bbeeffoor er e vviissi bi bllee de

deteteriorioraratiotionn ofof ththee susurfarfacece hashas ococcucurrerred.d. 2.6

2.6 SAFSAFETY PREETY PRECAUTIOCAUTIONS.NS. 2

2.6.6..1 1 GeGennereraal.l. T hT hee ccoonnt rt ra ca ctto ro r s hs haallll a sa scceerrt at aiin ,n , co

compmplyly wiwithth anandd obobseservrvee alalll thethe stastatututestes,, reregugulatlationions,s, an

andd ininststrucructiotionsns ofof ththee rerelevlevanantt stastatututortoryy auauththororitiities.es. 2.

2.6.6.2 2 HeHealalth hazth hazarards.ds. HeHeaalthlth hhazazaardrdss aassssocociiateatedd w

withith hahanndd ttooooll clcleaeanniningg incincluluddee tthehe ffolollowlowiningg:: ((a)a) PParartticiclleses ooff mmeetatall wwhihichch ccooululdd pepenneetrtraatete ththee eyeyee.. ((bb)) FFi ri ree oorr eexxppl ol ossi oi onn..

2.6

2.6.3 .3 Eye pEye protecrotection.tion. SSafafetetyy ggooggggleless sshahallll bbee wowornrn b

byy ooppe re ra ta toor sr s ( s( seeee A SA S 11771155 aanndd AASS 11771166)).. 2.

2.6.6.4 4 SafSafe wore working gking guideuidelinelines.s. WWherheree chchipippipingng h

hamammmererss araree ususeedd nneaearr flaflammmmaablblee mmatateeririalal oorr fufummeses,, n

noon-n-spspaarkrkiningg totoololss sshohouuldld bbee ususeed.d.

COPYRIGHT COPYRIGHT L

L i i c c e e n n

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C

C.. UUnnppaaiin tn te de d.. SSuurrf af accee iiss co

consnsideiderabrablyly rusrustedted anandd lli gi gh th tl yl y p ip ittt et ed .d . NNoo iin tn ta ca ctt mil

millsclscaleale remaremainsins.. TypTypifieifiedd b

byy RRu su stt GGr ar addee CC oof f AS

AS 1621627.7.9.9.

Wil

Willl reremomoveve rusrustt ononlyly pa

partirtialally.ly. RuRustst retretaiainenedd in

in pipitsts.. CoContntininuouousus ham

hammeringmering caucausesess ssc ac ar rr ri n gi n g ooff t ht hee mme te ta la l an

andd prprovidovideses fissfissurureses for

for sesecocondndararyy cocorrosrrosionion.. N

Noott aappppllii ccaabbllee.. WWii llll rreemmoovvee rruusst ot o nnllyy pa

partirtialally.ly. RuRusstt retretaiainenedd iinn pipitsts..

Wil

Willl reremomoveve rusrustt ononlyly pa

partirtialally.ly. RuRustst retretaiainenedd in

in pipitts.s.

D

D.. UUnnppaaiin tn te de d.. SSuurrf af accee iiss he

heavavilyily rusrustetedd anandd pipittetted.d. V

Vararyiyingng aamomoununtsts ofof rusrustt ssccaal el e m am ayy bbee p rp re se seennt .t . NNoo int

intactact millmillscascalele remaremainsins..

Wil

Willl brebreakak adadhehesisionon of of ru

rustst flaflakekess anandd heheavavyy rust.

rust.

Wil

Willl remremoveove looslooseneneded ru

rustst ononlyly..

Wil

Willl ononlyly reremomoveve loolooseselyly ad

adheherenrentt anandd powpowdederyry rust.

rust.

Wil

Willl remremoveove looslooselelyy ad

adheherenrentt anandd powpowdederyry ru

rustst ononlyly..

E

E.. PPr er evviio uo ussllyy p ap ai ni nt et edd.. L

Li ti tt lt lee o ro r nnoo r ur usstt e ve vi di de ne nt .t . P

Paiaintnt cocoatatinging wiwithth ononlyly minor

minor defdefectsects..

N

Noott aappppllii ccaabbllee.. WWii llll rreemmoovvee aannyy loos

looselyely adheadherentrent coatings.

coatings.

Wil

Willl reremomoveve ananyy loolooseselyly adh

adherenerentt coacoatingstings..

Suitable. Suitable.

F

F.. PPr er evviio uo ussllyy p ap ai ni nt et edd.. V

Vararyiyingng aamomoununtsts ofof vivisisiblblee rru su st .t . P aP ai ni ntt cco ao at it in gn g w iw it ht h bli

blisterstering,ing, flakflakinging oror othotherer defects.

defects.

O

On ln lyy p ap ai ni ntt a na ndd sso mo mee loo

looseselyly adhadherieringng rusrustt rem

removeoved.d. ConContinutinuououss ha

hammemmeringring willwill cacaususee scarring.

scarring.

Wil

Willl remremoveove looslooselelyy ad

adhehererentnt papainintt anandd rusrustt only.

only.

Wil

Willl remremoveove looslooselelyy aadhdhererenentt papainintt anandd rusrustt only.

only.

Vi

Vigogorourouss rubrubbibingng isis re

reququireiredd toto remremovovee rusrustt an

andd dedefecfectivtivee papaintint..

TABLE 2.2 TABLE 2.2

GUIDE TO SURFACE PREPARATION OF LIGHT METALS GUIDE TO SURFACE PREPARATION OF LIGHT METALS

ACHIEVABLE WITH HAND TOOLS ACHIEVABLE WITH HAND TOOLS

Hand tool Hand tool Suitability Suitability Remarks Remarks Original surface condition

Original surface condition C

Coonnddiitt iioon n AA* * CCoonnddiitt iioon n BB†† S

Sccrraappeerr WWii llll rreemmoovvee aannyy lloooosseellyy adh

Wil

Willl reremomoveve ananyy loolooseselyly ad

adhehererentnt papainintt anandd rusrustt ononlyly..

— — W

Wii rre be brruusshh WWii lll rl reemmoovve ae anny ly loooosseellyy adh

Wil

Willl remremoveove looslooselelyy adhadhereerentnt p

pa ia in tn t a na ndd r ur usstt o no nl yl y..

S

St et ee le l w iw ir er e b rb ruus hs he se s a ra ree nno to t rec

recomommenmendededd bebecacaususee thetheirir ususee ma

mayy reressulultt inin ststeeeell papartrticleicless re

remamainininingg onon ththee susurfarfacece whwhicichh ma

mayy iniinitiattiatee bibimetametallicllic co

corrorrosisionon.. IfIf ususeded,, papartirticlcleses mu

mustst bebe reremomovevedd onon cocompmplletetionion or

or wirwiree brbrusushihingng.. A

Abbrraassiivve ce cllootth oh or pr paappeerr SSuuiitt aabbllee CCooaarrsse ge g rraadde ae abbrraassiivve ce cllootth wh wiillll re

remomoveve ololdd papainintt anandd cocorrorrosisionon pr

prododucuctsts frofromm ththee plplananee susurfrfacace.e. Wil

Willl nonott remremovovee cocorrorrosisionon frofromm pits.

pits.

— —

*

* PPrevrevioioususlyly papaininteted;d; litlittletle oror nono cocorrorrosisionon evevididenent;t; papainintt cocoatatiningg hahavivingng ononlyly minminoror dedefefectcts.s. †

† PPr er ev iv io uo ussllyy ppa ia in tn te de d;; v av ar yr yi ni ngg a ma mo uo un tn tss o fo f v iv issi bi bl el e cco ro rr o sr o siio no n p rp reesseen tn t;; p ap ai ni ntt cco ao at it in gn g h ah av iv in gn g bbl il is ts te re ri n gi n g,, ffl a kl a kiin gn g o ro r oot ht he re r d ed ef ef ec tc ts ;s ; iinn m am an yn y cca sa seess aa c oc om bm bi ni na ta ti o ni o n ooff aal ll l t ht hr er eee t ot oo lo lss m am ayy b eb e rre qe qu iu ir er ed .d .

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(10)

7

7 AS AS 1627.7—19881627.7—1988

A

APPEPPENDINDIXX AA

PURC

PURCHASINHASINGG GUIDGUIDELINESELINES

((ThThiiss AAppppeendndixix dodoeess nonott foforrmm aann ininttegegrarall paparrtt ooff tthihiss StStananddaarrd)d) A1 GENERAL.

A1 GENERAL. AusAustraltralianian StanStandadardsrds areare intintendendeded toto incincludludee thethe tectechnhnicaicall proprovivisionsionss n

neececessssaaryry fforor ththee ssupuppplyly ooff prprododuuccttss rerefeferrreredd ttoo inin tthehe paparrtiticucullarar SStatannddarard,d, bbuutt ddoo nnoott pu

purprporortt toto cocompmprisrisee allall ththee nenececessassaryry prprovovisisionionss ofof aa cocontntraract.ct. ThiThiss ApAppependndixix cocontntaiainsns ad

advivice,ce, anandd rerecocommmmenendadatiotionsns onon thethe ininfoformrmatationion toto bebe ssupuppliplieded byby thethe pupurchrchasaserer atat ththee ttimimee ofof ininqquuiiryry oorr orordeder.r.

IIt st s aai mi mss aarree t ot o aavvooiidd mmi si suunnddeerrsst at annddi ni ngg,, aanndd t ot o r er essuul tl t i ni n tthhee ppuur cr chhaasseerr r er ecceeiivviinngg sa

satitisfasfactctoryory prprododucuctsts anandd seservrviceice.. A2

A2 INFORMINFORMATION TO BE SUPPLIED ATION TO BE SUPPLIED BY THE PURCHBY THE PURCHASER.ASER. TheThe purpurchchaseaserr sshhououldld susuppppllyy ththee fofollllowowiingng ininfforormamattioionn atat ththee ttimimee ofof eennququiriryy oror oordrdeer:r:

((a)a) ThThee orioriginginalal susurfarfacece coconndidittioion.n. ((bb)) MMeet ht hoodd t ot o bbee uusseedd..

((c)c) CClalassss ooff clcleaeanniningg rreqequuirireded..

((d)d) TTrereaatmtmeennttss rereqquuirireded foforr weweldldss aanndd ststeeeell ddeeffecectts.s. ((e)e) RReqequuireiremementntss foforr prpreeliliminminararyy clcleaeanininngg..

((f)f) MMaaxiximumumm ddelelaayy aallllowoweedd bbefefoorere cocoaatitingng apapppllicaicatiotionn.. ((g )g ) NNaat ut urree ooff t ht hee c oc oaatti ni ngg..

((h)h) QQuauallityity coconntrotroll aandnd ininspspeectctionion rereqquiuirrememenentts.s.

((j)j) SSpepecciaiall rereqquuiireremmenenttss foforr paparrtiticucullarar sisitete anandd wweaeattheher.r.

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