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LEAD INDUSTRIES ASSOCIATION
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To Msdbara c( tt* M Lead MbImI Comttaei
Attached la a flrtt draft of proposed Had lead Tachnlaal Uttar . 11, "Surfao* Preparation of Steal fer Usd Lead Frlasra.* riass* reel** this and aka ^batavar auggestlans, oorreetlcns or rvvlalai* yo* eae fit*
To will oota that thla Uttar la net in the fan originally dseldad pea by tha acaaltte*. la attesting to do that It ns found that the lattar( la eiianirlslrg all tha ecmsoc nethods of eurfso* preparation, not only paean* too lcn< (aoas thirty script parse) bet also, boesuss it *aa a nsmary, did not do Jostle* to aoy one preparation nothod. To do tha job properly, of courea, would entail tha praparatlon of a formldabla booklet, nook bayond the aaopa of a had Land Teohnloal Uttar and of doubtful pronotlonal raise In proportion t*
oat*
0 Tha praaant approaoh *aa therefor* taken, la which 1 haw* attseptsd to sst doen, In a useful tabular fere, apeelflo eurfso* praparatlon reoveisnrta ticna la ralatloa to tha Boat canon classes of steal painting job*. la torn X hare tried to sslret the rad laad paints, of varying typos, so scat eldaly riocm
esod. Tha last part of tha Uttar will b* an appendix containing all the rad
lead foraulatlon* naatlonad.
no aaana an I astlaflad that the lattar la aee la Its bast possible form and It la la thla nor* than mythlng ala* that suggestions are sought, Also, asorg tha spaolflo points oo ahlch year osraful attaatlon la requested are the following*
1. iocureoy. la ons plaee, at least, X have attanptad aa roccmain latloo, la others X have Beds only an educated guaea.
t* Completeness. X have triad to stlek to t*n*r*l elasaac. Perhap* a eider rang* of spaalfle aaaaa la praferebla^But vatob oet for exoasetve length that U1 asks tha latter a hodge-podge t)
) Scop*. Many preparation nsthoda such aa flans cleaning, alkali, cleaning and acid elaaning have bean noglaotad. (Hr thinking was that abar* nusnroua altsmatlvaa are given tha raecaawndatlone are Bo longer vary enlightening, ilao, I attoeptad to koap the table alapla, Qa the other hand, thsre are aubatantlal deficiencies id tha tables
b. 1 mater of blank (psoas have been left la the tabla far year additional ri amendtl ana.
An early revise by aaeh of yen el11 be appreciated.
?a*7 truly your*.
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tqr Surfm IVapfatlcnf .................... .
Coealdaratiorw la Sarfaoa Prwparktica. .
aiBGunrittloca for fcrfiet (nptfttta for Spaalflo Painting CoodlUoaa
Ippendla - Bad Load Foraalatleaa
Rad Load Taoh/daal CoaadtU* iu> jmjsnm lasecunai
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- kof ite wetting ability* The regulreaente for eurfaoe preparation, thveforw, are Bore eerere as the wetting ability of palate decreases. Ooa reason ehy tbe straight red lead la Uaeeed oil palot, L.lJw Forala 6-1 (tbe aaaa ae Fed* Spso. TT-P-66a, Type I, or 83PC Paint 1-55T) or Ite near equivalaet, bae add.reed ae eadoant poaitlan la the painting of ateal le that lta rupericr eettlar ahareoterletlee ealce It poeelhlr to be Med over eteel where aeall Mcoate of net and tightly adherent aill aoola are present. 6onh a eurfaoe eondltlaa le often the beat that eaa practically be obtalaad la the field. The eorroelco lnhibitlee red lead plfteat, of eowee, oootrlbotee to thle edvaatageoM eboreetorletle*
The llneeod oil vehicle, howeser, le aloe drying and It le oeeeeeary to Me a fatter drying dWeeia eehlele prlaer, euob ea L.X.1. Fcrania 6-7 (TT-P-Ma, Type fl). 8uah a paint le United la lie watting ability by the pres. enoe of eynthetle retina. Therefore, rnrfaoea receiving palate of thle type oat be oarefelly cleared of all eorroeloa protects and eootanlaaate.
doing etlll further, palntlag requirement# aay require the uea of the eery rapid drying aynthetle eehlele type palate, each aa U1U. Forwolae 3-7, or 6-U (TT-F-We, Type HZ) r 6-16 (Be Ships Paint Fareola So* 116). These paints are Mofol and axoalleat bat aaly oa the aoet oarefelly prepared aorfaoM eo that they aay only be seed where a high degree of olaicing le praetlaal or on faotoryfabricated ogelyent,
Vlth these eooelderatlooe la Bind, the reowinflations following, for ew^. faee preparatloa of eteel wort to be priced with red lead palate, are prwa acted.
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