Njira Zoyesera Zopangira Poyatira Ufa

NJIRA ZOYESA ZA KUTITSA UFUWA

Njira zoyesera zimapangidwira zolinga ziwiri: 1. Kudalirika kwa ntchito; 2. Kuwongolera khalidwe

(1) KUYESA KWAGLOSS (ASTM D523)

Yesani yokutidwa ndi gulu lathyathyathya ndi Gardener 60 digiri mita. Kupaka sikuyenera kusiyanasiyana + kapena - 5% kuchokera pazofunikira zamapepala pazida zilizonse zomwe zaperekedwa.

(2) KUPITA KUYESA (ASTM D522)

Kupaka pa .036 inchi wandiweyani phosphated zitsulo panel kupirira madigiri 180 kupinda mandrel 1/4" mandrel. Palibe kulakalaka kapena kutayika kwa zomatira ndikumaliza pa bend kuti zitha kuchotsedwa ndi tepi ya 3M Y-9239.

(3) KUYESA KWAMBIRI (ASTM D3363)

Mapensulo a matabwa a Faber Castell amagwiritsidwa ntchito mu kuuma kwa 1,2,3,4,. Kupaka sikuyenera kuwonetsa zizindikiro kuchokera ku pensulo ya 2H.

 (4) CROSS HATCH ADHESION TEST (ASTM D3359)

Lemba parallel mizere kudzera mu zokutira mpaka gawo lapansi, 1/4" padera pa mtunda wa inchi imodzi. Lemberani gulu lina la parallel mizere 1/4" motalikirana ndi perpendicular kwa seti yoyamba. Ikani tepi iliyonse yomata kenako chotsani pang'onopang'ono. Zotsatira siziyenera kukhala kukweza ufa wochiritsidwa pakati pa mizere ya olemba.

(5) CHEMICAL RESISTANCE TEST (ASTM D1308)

Ikani pafupifupi 10 madontho a zosungunulira mayeso, wopangidwa 95% ndi kulemera toluene ndi 5% ndi kulemera Methal Ethyl Keytone pamwamba ❖ kuyanika. Lolani kuyimirira kwa masekondi 30. Pukutani ndi nsalu yofewa, youma. Kupaka kuyenera kuwonetsa chizindikiro chozungulira pang'ono.

(6) KUYESA KWA IMPACT (ASTM D2794)

Zokutira pa .036 inch thick phosphated steel panel zizitha kupirira ndi 1/2″ Mpira woyesa wolima munda wokwana mapaundi 26 molunjika ndi kubwerera kumbuyo. Palibe msipu kapena kutaya kwa adhesion. Kumaliza sikudzatha kuchotsedwa pamalo okhudzidwa ndi tepi ya 3M Y-9239.

(7) KUYESA KUZINDIKIRA KWA MTIRITSI WA MCHWA (ASTM B117)

Gwiritsani ntchito 5% yankho la mchere pa 92-97 ° F mu kabati yosindikizidwa nyengo. Lembani X muzitsulo zoyesera za zinc phosphated pazitsulo zopanda kanthu. Yendetsani maola 24 aliwonse. Kumaliza mayeso ndi maola okwana pambuyo pa 1/4 ″ creepage kuchokera kumalo olembedwa. Creepage siyenera kupitirira 1/4 ″ mbali iliyonse kuchokera pamzere wa alembi pambuyo pa kuwonekera kwa maola 500.

NJIRA ZOYESA ZA KUTITSA UFA