Kuthunyelwe ku 2015-05-14Okokuqala, ukubukeka:
Ekukhanyeni kwemvelo kwemvelo, ngokubuka ngeso lenyama.Ithoni eyisisekelo ye-zinc chromate enamathela kufanele ibe grey, ingatholwa ngokuguqulwa kweminye imibala, njengomnyama.Ukufakwa kwe-zinc chromate kufanele kube okuqhubekayo, ukunamathela okungenamthungo, amabhamuza, ukuxebuka, ukuqhekeka, umgodi, ukufakwa kanye nokunye ukukhubazeka.Ukugqoka kufanele kube okufana kakhulu, kungabikho okwenzeka endaweni esobala kakhulu.I enamathela akufanele discolor, kodwa ivumela amabala amancane yellow akhona.
Okwesibili, inani le-coating kanye nobukhulu bokunamathela kokuhlolwa:
Inani elijwayelekile lokwemboza lobukhulu bokunamathela noma ukunameka kwamabanga ahlukene ahlukaniswe amamaki amane, izindlela ezimbili zingasetshenziswa ukuthola:
1, indlela yesisindo sokuchithwa: isisindo sesampula sikhulu kuno-50g, sisebenzisa ukunemba kwebhalansi engu-1mg okwakuyisisindo sokuqala esingu-W1 (mg), isampula yafakwa ku-70 ℃ ~ 80 ℃ we-20% yesisombululo samanzi se-NaOH, ecwiliswa i-10min, i-zinc. I-chromium enamathelayo isihlakazwe ngokuphelele.Isampula yakhishwa, yagezwa kahle ngamanzi ngokushesha ngemva kokumiswa, ukunamathela kwancibilika, kusho ubuningi besampula yokuhlola ngemva kwe-W2 (mg).Futhi ubale inani lendawo engaphezulu ye-??ucezu lokusebenza S (dm2), ngokuya ngefomula elandelayo ukuze ubale inani le-coating ye-W (mg/dm2):
W = (W1-W2) / S
2, indlela yesibonakhulu: cindezela izidingo ze-GB / T6462, kusetshenziswa i-optical microscopy ukuze kutholwe ukushuba kokumboza.
Okwesithathu, ukuhlolwa kwamandla okunamathela:
Kusetshenziswa indlela yokuhlola itheyiphu, amandla okunamathela athola ukunamathela kwe-zinc chromate kanye ne-substrate, kanye nokuhlolwa kwe-tape ngokuya ngezidingo ze-GB / T5270-1985 esigabeni 1.4.Ngemva kwezidingo zokuhlola ayikwazi ehlutshiwe off enamathela kusukela substrate, noma ivuleke ekugcineni, kodwa okuvumela tape okunamathisela ukushintsha kombala kanye zinc, aluminium okusanhlamvu.
Ukuhlolwa kokumelana namanzi: Isifanekiso sacwiliswa emanzini angama-deionized 40 ℃ ± 1 ℃, ukucwiliswa okuqhubekayo 240h, ngemva kokuba isampula ikhishwe futhi yomiswa ekamelweni lokushisa, khona-ke ukuhlolwa kwamandla okunamathela, imiphumela yokuhlolwa kufanele ihlangabezane nezidingo zamandla okunamathela. test.Ukuhlolwa kwamandla okunamathela kufanele kwenziwe kungakapheli i-specimen ye-2h isusiwe esikhundleni samanzi akhishwe.Ngemuva kokuhlolwa kokumelana namanzi, ukugqoka akukwazi ukuvuleka noma ukuvuleka ekugcineni kusuka ku-substrate.
Isikhathi sokuthumela: Jan-13-2022