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Coating Def 2 2

1) Peeling or orange peel texture on a coating's surface is likely due to improper application technique or contamination of the coating during application. 2) Overspray occurs when small particles of dry paint adhere outside the intended spray pattern, usually caused by improper spray application technique or conditions. 3) Pinholes in a coating are caused by air bubbles or moisture becoming trapped during application before the coating dries. They can be prevented by using proper application equipment and techniques.

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Ahmed Ibrahim
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0% found this document useful (0 votes)
42 views16 pages

Coating Def 2 2

1) Peeling or orange peel texture on a coating's surface is likely due to improper application technique or contamination of the coating during application. 2) Overspray occurs when small particles of dry paint adhere outside the intended spray pattern, usually caused by improper spray application technique or conditions. 3) Pinholes in a coating are caused by air bubbles or moisture becoming trapped during application before the coating dries. They can be prevented by using proper application equipment and techniques.

Uploaded by

Ahmed Ibrahim
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Applkation

& Coatinq
Defe6 & (oalinqDefe(tt
Applkation

PEELING PEEL
ORANGE

Analrtutnpk trJh|Mrntle f1ltl r0paql

oschtlonr 5m ir t0llakr!,dllh0uglr
peelighnd!b troducr0fr
dndp dbkr0irin$ r(hon beplrled d\rdy
ftom0r
Aoi'(are0u5lyIile iw4 ftomthe5!b5(ldte
0ffrcm
lelyJe.,n
&ib,due too55olddhet
l)l

Probabh(!ssr
f0| n! 5lhprcdLtcl0f
irlr0ndstrcn9rh0lth0[drntilm
d!r10(ontimnal0rori|{0[rparbi
ryokoffs

Prewrtionr Usrrofirdrodtnq sFrf(ll0ntppied


rynem,rnd m
( einandunrontam
nitdsurii[tl

f?mover $ftindpibhr0rln0br*tod
frmedqcm
lorirpinovi
Ahrifip,dein (oitng
indirpNsurrdrrk
5ltemo (0irfin9
man!l;{tufr'5
le(ommerdirions

/"4
& (oatinqDefedt
ADDIi@tion Appliotion& Coatinq
Defeds

PEELING OVERSPRAY

ift50lpdint
Sm!llpa adhering
o thei!/ie ofthe
prcviols
dryo.t,genenlyadiaetothearea being
often
$rdFd. asi Fbbysufd.e.
appeaI S'nilar
l0dfy

esoflvetpi ntla fg ou$de


Pan( te spraypatten
Solvent toofapdy spftyapp(alonunder
evaporites

spnypant!ndefluitabe (ondltons.
ellvircnmellu
Adjun
rpray 0n$drypaint
paft'ns ninrnr ove6p6y

Beforc
orc dryn9remow bydryb|ushing
f00,Ed
bysoll/€ni
\r F Aftefcurc
ibrade
andapptinoiher

*a.4
7
lppllotion & (oatlnqDefeG Appli(atio|l& Coating
Defedt

PINHOLES RAIN DAMAGE- WATERSPOTTING

I
i €
Anaket
ex1npk onthekll, ingp\g?
is3hown
!
,e
pddn: The
Desr tofiration
ofmnlr hohrnrh€ {EiFiotfrlm
during
applctofaidd'yi9,due s aforgaib!bbhrv{h(h T
bu$t,giving
rseloimall(nter orhoe5whkh 6illo
(oalese thell nrdfts.
before

Plolable(|$!r
Solveoriireitipment\,vtiinapa
f nr.A(ommon
vlhei(oainq
prcblem poroLr5
subnftie
sudar:iftilkd
pdmeE zin(
il atesindmetalspny€d
oitingselc Dsolptlm: Oalffindwater ofthepalnfl rn
ma*sonte sufa(e
Plnh0
escnilsobecusedbyinonert
spriy
applkalion alsedbyranofheavy
ondeisalion,

panlldsurfacauses
Prchbh(|lls.!|Ranfilllruoni frcshly saleEto
lJ5e(ofiedapplkatlon
teahfllque,
wthsutibly dently.
fomonthesurfi(ebgfunlthashadeneds
formuitedprodur$.Corre!t
solventimdsand
envlronmenta
ondltons,
ahed5pnyequ pnenl
and A owoitlng
fuherepra(i(abe)loiurticehad
of$fiygun
diian(e fomthes!rfa(€. toexpoJure (ondenia
ton norheavy oi,

Abndq,dein yiLr
ovehllandapp
hbhftoat/undercoat Abft
de,dean
als!fa(edrmage
a€aiand
applyovenl
andtopoat$iee5sary
& (oatinqoefeds
ADDli(ation Applkation& (oatinqDefectt

PINHOLES RIPPLED
COATING

Derdlpddn:Ar ppedefftcl
onthesuf&e pai(
oftlre

ftohbhcGstStmngwirdbloMng
aorss
lfiesurfae
ofwptpaintolles
ittoripple\{hereth
55on the!ndQr5
de,lhedpp
escn
han0 downn$efo'nofsmal{aladter,Can
also
be
(ausedbypoorapp
ctontechnque!

pintunder
ft.w lon: Donotappy lnfawuribh
oDditons.Use
orc(appctlon
equipme
alldl,lo*man$lp

When
mildrlpp eJaft
ft n,abft dethesLrfacrnd
re(oat
WkEthisii amaioreffttl,remwelheoalinqs
and
Appliction&(oa nq Defeds Application
& Coatinq
Defects

RUNSORSAGS ROT
a iode(lbed
sdrtainrorqriiklei

'i

I
D6(hilonr Dirif rnd rolio {md qt05 n! Irih I ahltin{r,
Tlttng flikn!mddrl n! oliri n

Piobable(au
G$E! r: e r i t f 0 m n t e r . r f ( e 0 r , r 0 0 l c 1 0 r 0 ! e r r 0
nltpnro0d0(,rs0rriIuie0l fto||.'(rtiil'15!5rrtr

tuvsnnd: [drcrl iii ouonq mi nlnir(e l0 rlr| woo(r]d


(0irrq hsL'ei rood€rsLnii(rs irc 50Lfi,rrrllrll
fr0mnr hrforir0i,rir 0n0ftirir

iepar lltir(corrrf!l00dfldfiir[y(thficrl wodl$!


atl)t Nu A dt \trr4 dt l)t lilhMt trql f0muitd Ifi n00dnrfic!
rsLrrirhr{oiti9slsrcm
Application
& Coarin!oefedt Appliotian
&Coaling
oet€<tt

RUNSORSAGS RUNSOR SAGS


abodsqibed
d onain5
orwinlhr d eftaituor{nths
ahodsqibed

d'
t

Dsdpiioi: 0ownwad aidteas0fplintwlriah


movement apFal
iufdcs
soonafierapplctonhvenk duetod(ess
ve
pantapp
cition.lnsevenituaton5itmiybede

rnhbhGB6:owfappationofpa $ nne|'wrcng
niex(esslve I ad)
ofodngagmt orjw poor,rofkftn5h
p.tou
d,in
prcblem
L pMntlor
exteme
crumnances,
beafomu
aton
ljse(orrerl
app(iionre(hn
ques
wlhsuilaby
' fomLratedprcduds

Rlpaln l,eitushoutrunsandra$.Wh
Whierhepiftisn
v lhcpanlhardredibndeandde!ndefe(t
appyovenff spdrepi
l(0a( r,isnecessafy
& (oatinqDefedt
Application & (oatinqDefeds
Applkation

RUSTSPOTTING RUSTRASHING

D6dpti0n: !f0$ offetr0Lrs


ordedeve 0t wthn thepores
ofi
panl
melioit r! 5mlarl0runrf0trnq0li
5priyed

\-. ,\phen0mer0
PrclabkGss: rwhdltdldrw0p0r,rLrm I umtfrcmdl
rpriled(0itnq5 s00iilterapt rir 0r Monrrc s
alxodred
iir0themeraloain!and rei(llwththefeff
0!s
sLrbsfiite
turysering rvithin ippr0prite roiln!
ireair!!fii 0v. nlr

Applrhefini
spailoitn!n daonto
ed€nvircnme
scrlmeo
spoyrdsuditl
mmcdnrcyihnipp
r ion.

(ednr5Iarh 090(di0ns,!v rctush,fteshlvilef( err


P r o r d ndqr yf m t h r r k r 5osf t l ' pt h e | m5i p f i y r j
ddqq!at appy5eiefroatm(oilnqman!f&t!rct
Ai\tl( tnlc it st\tMar te falMirqWqe
& (oatinqDefects
Applkation & (oatingDefeds
Applkation

RUSTSPOTTING RUSTSPOTTING

Dei(dption:f ne5p0$of
rusrwh(hippeironaFintilm,su
ta
5fq!emlna jdloc rd spolt
thnfrmsodt.Th ng
butGtdy5pread5
l)ver
thenrrfi..

Probablecau$r:
towimth(knejt!odsrndhoidayr,i
sodcfr.lsinlhr
nee e.lam
rdlio0s
T0oh emiycusr
9hdrurfaepr0f
piintlmand(iuse
penetilionofpeiksthrcuqha run
sp0t(ng
May.$o(uflDnmetil co iminat0r0l
aoaled
s!f.eby9rind
n9d!net(

Pnwfionr Appy prmlloat.lnsurc


in idrquite ou ngrynenr
idE!dtoyove$r(5udir0proi c Urrthrknm nq
rynem0ri owcfblinpf0fieProtprt roir09ffon
ontamin,tonw n rdnhqf id r n € t r

llpalr Depen0 d nt gy paen de i r e n i a b 6 dbel a


o sr t ( o a i
sua(eandre(oat.Remowa lolegndefi iindabrrde,
( andamdgedarcas.App yspor 'epair ore(oat ovec
Application
& Coating
tefe.tt & (oatingDeledt
Application

SETTLEMENT RUSTSTAINING

Dedptloi: Atemurd1odefibetlre settkd pgmmvio d! n i


qLrd pf t0appkarion folnddfingpantnoftge
5 e r t e m e n t , r0h(.rlur 6a f r emr i { n gi i d d L rnf9
ippr oncnres!I ndffeento0u6 ndffeeraft5 Dlr(lilrlo A ghlniinrq0nthesurfir€oflh€
N ftcurd byt[e
prcrpralonoffeffo$or
de
CrBs,Old
Prcbabh no(kh€ivypg'ir€nred F nt,wrong I0mual0n0l
r o n l i m l o n 0 l p o dGun{bt e i p o b e m n (( h
' zw Prcbablecd$:
Wacrrun-0f
frc.,1
afu'lyru{i(eabovea
r0!ndyrorhd
nng0r.urcwhentherun
suffa(e.funta 5weed0ut
dnd(ontamnlldw .dr
runs
overanddis(oloub
orher
PBendoi: LIeprcdLr($
\,/lhinshellfeL}eidequatpnrrng remsorloctionsLJ5!aly
morcofineye-s0rc
thana
prcedures pa ml(ed
Keep ofrerrc!ated
durngspmy (0,rn9$efmay
defe(The nor
bedefe(l
w 0nl nitred

hevlntlor Adoqralede5ignand
suhbenalltnane
Rlpih AsPrclenl0n
Wherctherc$ B sap rhyflnsh,rcnrovr
$eiffe(led
miligiid rcftat pforiut
riking 0Naqrnsr nlpllr Reno\/e 3 (01mPt(
n9andapply
stain (oat09as
ADplidtion& (ontinqDeted5 & (oatingDefede
ApDlication

SOLVENT
LIFTING SAPONIFICATION

;
s
0ftheiu aftofthepait lilm.Winl
Ds.iprloi: [r!pli0n nqrnd
bli{erfqwhideads loa wealsurfac andullmare
(odingbreakdown
oedprlor: Iheoa ig appeaB10
besoft and (
n dlcin be$orad
PruhbhGss: 'r$npatbepiintiyn€m5
used,ToFoa$
\t t i nrcng $oboranovelilleffett.
isolated
sowntbkndon iti(k prcvo!sind$eaker sovent
bendedroain$.0verciing ftepfliouj(oaihas
befofe Pnbiblecirtei
Asoapfo indwahl
nauonE&lionbeMeenestr,alta
adequateymrdened oltenloundinakydandol (ctnqsNotiby found
o
ronoete and(oitngused
(oi&dnruduEs nonium{on
Prcven{dir Llre(orcdoati 9 sper
f,alion,owrcoaling
timeii nd wilholhod( prctedion.
miteralsCondu( (onrpat
biltytrilsrtithunde(oat/
rcpoa$, Prclllmbn: ljse(ore((ct ngspedliolions
alrdmateaJ
yeftit nqs.
nlralil Remov€
i I defert
wthco'r€d
Atade,
ceanandE(oit
oatnqsynem,following
thercommended v nll|lr allsotl(oitings
Remove
ocormd
where hdi
tpollilicaton
( eanandft-appy undercoii/bFoii
ibrade,
wercoaling
timej (non-laponifiabe).
Appliotion& (oatinqDefedt & (oatirqDefe6
Appli(.tion

SOLVENT
LIFTING TACKINESS

Des(llptlor: 50frl mofapdled


rcatngsAllhough
beyondlhewet
thepanrfrmrema
andllqudnige, ff ata udy and
rofrslrfu(e.sofie{mei
onlyappaenton1o!dnq e
subnftt

Pmbabhc6s:
ThercaRvifousEarowhyapintl]!l
rcnraintady
Ovsrhidnes!,
trrersive
tinneri
(la(kof).u
Wong ruagent
Low
dryng/or
nglemperdtlPj
Ureot(oarng
bEofdpotifeorshe
I lllr

hgttntbnr Li5e(o e( (oaUng


spdllcionsindmateia
i Ensurc
t,r!+i* ftilerasaErore(lymxed.
Folowpanl
rupp e6nommendat0nr,

Rllrlr R€move
detedive ( ean
oiling.Abrade,
and
R(oit

r'/'9
ADpli6tlon& (oatlnqDetecE Application
& Coating
oefects

SOLVENT
POPPING UNDERCUTTING

Dardptlonr Visuilaorosion
beneat a paint
{ilmOrosion r.vels
beneath thepiintflm andlfri rhepiintfmmrhe
r!bst€te.Severe
aseran ihowi5 bliiern$flakn$
fiaft andlxposed
run.

ofFlntto(omded
hob.bhcrulel|Appliction RLrst
subslrite olepfrom
o.Klp{on: S0wnr bubb!s
keaf) rhepanrllm
onthesu?ceof aeisof
mdinkadamageandm5singprmeroatG
soon
ifierappl
Grion. befoundn aeasofpoordergnor&aers where
inadEuak ind(oitig thdness
p|Ea'alion was apdhd
Pro!leQur$lnore(liolveft
befdr,porols
J! a(€5
and,/yroiq Could
a$ bedu€ toadofmaenan(e
envircfmental(ondtons
ft.velrlonr IJse (oatng
id€qL]ate spe(fictons
afdfialntenanae
Prcvcntlonr eft(oainq
Use(o spedl](illo
indnalelals
Corrcd pro(€durcs
Apptil!itabyforiLr
atedprmer
appl(ationterhnquesandenvrcnrneila
ondtlo|]s
Rlpali v
Lthyabftdeand(eanthesurfaftandippyunder(cv
R.p!h Spol
repa
I lo(aliied
areas
Ckan
areas
appys! tibk reFir(oa1in9
prommenoar0m
backlo
sound
base,
to man!faci!ref's
l0p(0at
& (oatingDefeds
Appli@tion & (oatingD.fect5
Applkation

UNDERCUTTING WRINKLING
inq({e a$ Crow!looring)
alsoRive

Ath exInpks pate


atesh|M0nthef\ll|wtnq

0fM nthsn rhepdntl n durn!


Thedevelopmenr
dfyn9,Mnkling,swel
ngdndb nerngoflheroimg.

fbbabhGssrLlsui
lvdue
torhenliafomatonofiruffaesl
nw$
sol!€brsodpiints.Al$
s{,€ng0fth!o,trng
imm
sowntaft.l Gnifscfrcmovercoitngbelorc
rhe
prcv has
oLrsoit y had!ned.
adoq!ate

llse(orp((oitn9spe.tuaton,nd matoia J.Adeq$re


m i x i n g , a p p l k a t o n a nmdiot er n
r ig
fl o
solf0 w t h e
paintuupp e6p(ommefded o,/el(o?mg I fies.

Renlove ve(oatfgi Abode,(


defe( eanand
n(oat
Appli@tior& (oatingDetedt ApDlietion& Coatinq
Defectt

WATER
SPOTTING WRINKLING
r s Rivdliig6e akoCrcw'5foorinq)

Tk$otyappeanna p. film(aLrsed
ofthe bydrcps
ofwakronteiLrfaceaidwlkh
rem! nsafierthervater
po|itedTheefle(mlyorfiiynotbepemane,
hr5eft

falnqonthewt pantfm These


hohbhcass:Randrops kave
pemanemmar Brln
dopshlln9onafitshydded
bur
hids!{acWhenthewiterevapoile4
nrarks
may
be

DonolappyFintwlrenrdin
ilhreitmed.

Where $eiemay
fie makanju$ol]thesufa(e be
waJhed tep lJorterngorpefirallent
ofrbulwhere
damiqetoftepiintf
lm,abftdetheJufa(eand
R(oat,

;f
.v
AlDlkation& (oatingDefectt

WRINKLING
(se d$ Cow!toolinq)
akoRivellinq
Applkation
& Coatinq
D€fects

ZINCCARBONATES

0nt qallai
Desiprlon: t0!!ofidh$ spdsu{a$
Bnern!olpint
onagi{ansedsurlie

PobablecdR!
Wherun0ra 0r
ondresont,'suii(e0i9ilinsn!
l0appationollk& nloil nq.Cotrosionof:in.!id.r
thcpirltsufice.Gn
besmiaf t0rarh
runinghulwhitp

P@ertionr Seaznroatngfomdreenvonmenl
andiplk 0n
ofinrppropf
eprctertw(0atnqsynem

Blpdr Witer wiihrhrsuffr.ct0remow a trdc50lrn(


otr050npodrrts.s\,/rrpb Ioribndercinrndappy
i 5utirrr€
roitn9syltenr.

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