Document BRvb21Jqep5yEXO4Bov8yMz5E

1S2746 J 1 HiJ.) IIW^llBippMWppPIPiP -in frUiiifiTtfi' ^irf*iri>i*iii pppup i LIA07033 wC*d AwdwSHaafc'ii J1HBP1i i f |Ji| | f n HW'Pi>4'lip l*liW !jP *P W P Iip iW ip w P i || fWdK K. Chany. Jt. Tm* mk M H Y. , ............... HE problem* encountered in the painting of *W land fyic.m* Tgaivaniard iron and *ted have cratered about difficulties with adhcawwi of the paint tba. The Ahhough red iaad priatce* have baaa adaplad M a taultitudiaou* variety of arrvice* over the yarns. eight cl punt peeling ofl ph-uiad *urf*re* ia largeSttir work haa brra dear, tialil recently, oa the da* llmu ha* Lara a crnoM and. la the paial au, a nlugmuat of red trad painta particularly wiled Id painful on*. The aol commonly accepted mu revirr over galvanised surfaces. About three year* lor tbit irkiom* phenomenon ia that a reaction occur* ago lbe Red Lead Technical Committee of the Load brtween Ihr paial fiba and I hr |*lvairing. kerning /adajlrwf XlMnialin undertook the iavrvcigstion ef products that advereefy ailect adbniua. fund re aumemu* eapetimrotal (dating* lor thia purpose. mit* ia improving adhesion Kavt brra obtained by Both rusted and new galvaaised surface* were coated weathering Iha nutate brfura painline. (or period* in the teat* and. brcau*c of aptneaa to the program, ef three to *i* month* and h*ee. Supposedly. the aho aluminLard steel- From the rewuH* of two yearn weatherinf washes away oil* and (rcaaaa which are eipowrr. the Commuter believe* that the he for* a rewadue of the (tuiinf material* u*rd ia hoi dip gal muUtiuna givra brhiw are auperior lor arvia on vanising and it pndwn a roughening effect oa the galvaaiasd. The painta art versatile in that they galvanising. But thia practice introduce* and her *erve a* active aati-corrowv* paiata far gnHaiu**d (actor: rutting ha* oflea already rtaamraced when surfaces whirl* are already runted from weathering th* painting ia door. Chemical prrtnstment ia or thry *rrve as protective costing* for new galvan* MhbMftfUttWM m1 mm 1 mtm M i i fc rfcfirap t 9>rW Ml t nu jal Hnumwam MUMMann aaothar mathod that raa b* lurcmafal. la either ewan H la rvrdrat that paint* apectkcaJfy adtad la galvanised turfacm an Mcmmry. Kftn.'rer- iaad awtal which has bam prupady traatsdTh* panda wlrcled foe th* nwted auefac* portion* of th* teat war* 22 gauge gftiveniaed t*d, approai* mately 50% of whom surfaces was rusted. They wart divided into tvg inn which received systems of on* and tww prim** coats with and without Up ymf! ' -Sisayr*BP SdUUikcjJIStt! 4MWUWII N2746.01 H H fW W W kMUH mmmm mmm m LIA07034 Ainar*. "ir-iiii T "* >! iii i tilr < i j nflw w p ip iji WiiBi'iW H timM.UMW illi, w w , .i Iw 'iq f W J W 'WiiiniTTgC Tw pap^l "-^^WiJBi!PBPIIgyj.ygP-Jllp 4 Q > LIA07035 I *&** WM ImA m HyUt ft# to W tffilai. lrnto< w m LI A07036 v York Cily u4 oh silt north W Groat Snid Bay in a rural revirraimral Oh result of tha program, Mode fra* tha yiiM thrtevwivra, im th corroboration of Ik* Boat x. crptad vim an prrtreatTnret. Nr* Mrfwro that an ao( tralod cannot he painted rflcctrvrly. Hon. mrr. it aaa found that a number of cotmaoaly known pnUtalBwata. (hast, lor ruenpir. with copper ate phate, antic arid, or hydrochloric add an iarffsetiva. Very aucrcadul. Iwtrtvtf, waa a oac phoN>i*ata tnot* naL Tha atrpa ueed ia pntmtiac panels ia tha invasligatioa and highly nraaiaandrd an m ioflown: I. Oaa the aurfan. Rnam aH getaaa Saak surface Iflitly with aini trad. t- Apply coaling. Brush or epray undiluted mating aatforady oa tte cleaned a>ac wrlan. A protartiva coaling mil Iota ia oaa to two auaytea. J. Wad* tl* coating with add nt*. A opoaga. rag or Soar caa bt mad. 10 prrcmt. Panrii al arm faKwiid atl rt Uffrr tad ipfit is M, awe mW wciivkl prrtfTMtnnit, the attar M. Each wW ai divitad tato three area* lot one priatf coal, oat pnrwr coat md oar taiah emu to pu--ir mu and one hud mu. The ikimaixd panda, ad 20 pup Kid. m dnidfd uniUrly. All p**eW acre **tad with auiertl pint and the rutted own arte bfMly virv brvttad to rmwe k*e rw*t The panda l.iapli at peeOaa M MtnaaC yaaMa 4. Dry (hr coating with Hraa raga or alter taffy riral tiac lar tha wertan la dry brion appiiratioa ad the peat. tieiQpla af pwf pai<w^n yU. aa nh>4 y i n da wvn npraad *1 (ha Almnaphaeie Tatting Staira. SayviUa, N. V. o* tha *4* aouth wpiMt rate. Tha Nation in oa Long laiaad, fclty Bute mm oi Nr* TW painta thnaaltw aay hr divided ial* thnr growpa. Fonaulaa A aad B an (or appbrataja nhma an topcoat ia to hr and. Fonaaia C ia lor thr aaflM appiiratioa. list whrrr, (or awttm at taair. a gnta ftaieh ia deswnd. Whan a topma! ia la I* append Formulae D aad E an racenmendrd. Thr mm far thr parings caa ba aurmiard by Inspection. Thr pigawnta ia thr pair* an identical, but thr tthicha differ. Fcrmulae A aad II (aad C) an hnand cA* alkyd vrhicia typra whan thr wrltiag rhra<1eeietkn al bnirrd oil caa ba pul to advantage sheer tua( haa cnenateatad. Formulas B aad I iwa Mraighl alkyd vahirW typM far am whara (aalar dryiag tiaaa la datwabla. Tha alkyd typaa an wad auttad to arw. pn-lraatrd. surfaces. A ftnal, iaridratal, rnatl of tha tat waa la demonWrite that alteatlaiard awdanr kan inlriaelraOy (nod recaption to adhawna. aad a larga ataabar al tha painla taatad oa (ham peeved randate Kapelalrd haa PAINT AX) VAtXTH HKXUCTKX. MAT iMt