Yakatumirwa pa 2015-05-14Kutanga, chitarisiko:
Muchiedza chechisikigo refraction, nekutarisa kwemaziso.Iyo yekutanga toni zinc chromate coating inofanirwa sirivheri grey, inogona zvakare kuwanikwa nekugadziriswa kwemamwe mavara, seatema.Zinc chromate coating inofanira kuenderera mberi, isina musono kupfekwa, mabubbles, peeling, kuputika, pitting, inclusions uye zvimwe zvikanganiso.Kupfeka kunofanira kunge kwakafanana, pasina chiitiko chiri pachena chemunharaunda chakanyanya kukora.Iyo yekupfeka haifanire kudzima, asi inobvumira diki yero mavara aripo.
Chechipiri, huwandu hwekuputira uye ukobvu hwekuvhara kwebvunzo:
Yakajairwa yekupfekedza huwandu hwehukobvu hwekufukidzira kana kupfekedzwa kwemagiredhi akasiyana akakamurwa kuita mamakisi mana, nzira mbiri dzinogona kushandiswa kuona:
1, nzira yekuyeresa yekuyeresa: uremu hwemuenzaniso hwakakura kupfuura 50g, inoshandisa chaiyo ye1mg chiyero chaive chepakutanga misa W1 (mg), sample yakaiswa mu70 ℃ ~ 80 ℃ ye20% NaOH aqueous solution, inonyura 10min, zinc. chromium coating yakanyungudika zvachose.Sample yakatorwa, yakanyatsoshambidzwa nemvura pakarepo mushure mekuomeswa, iyo yekuputira yakanyungudika, akadaro masamu ebvunzo sampu mushure meW2 (mg).Uye uverenge huwandu hwenzvimbo ye ??iyo workpiece S (dm2), zvinoenderana neinotevera fomula yekuverenga huwandu hwekuputira hweiyo W (mg / dm2):
W = (W1-W2) / S
2, maikorosikopu nzira: press GB / T6462 zvinodiwa, uchishandisa optical microscopy yakashandiswa kuona ukobvu hwekuputira.
Chechitatu, iyo adhesion simba bvunzo:
Uchishandisa tepi yekuyedza nzira, iyo adhesion simba inoona zinc chromate coating uye substrate, uye tepi bvunzo zvinoenderana neGB / T5270-1985 zvinodiwa muchikamu 1.4.Mushure meyedzo zvinodiwa hazvigone kupepetwa kubva pakuputira kubva kune substrate, kana kuvhurika kumagumo, asi kubvumira tepi yekunamatira discoloration uye zinc, aluminium zviyo.
Muedzo wekudzivirira mvura: Chiyero chakanyudzwa mumvura ine deionized 40 ℃ ± 1 ℃, kunyudzwa kunoramba kuripo 240h, mushure mekunge sampu yaburitswa uye yakaomeswa pamhepo tembiricha, ipapo kuyedzwa kwesimba rekunamatira, mhedzisiro yebvunzo inofanirwa kusangana nezvinodiwa zvekunamatira simba. test.Kuedzwa kwesimba rekunamatira kunofanirwa kuitwa mukati me2h yemuenzaniso yakabviswa kubva panzvimbo yemvura yakasvibiswa.Mushure mekuedzwa kwekudzivirira kwemvura, kupfeka hakugone kubhururuka kana kuvhura kumagumo kubva kune substrate.
Nguva yekutumira: Jan-13-2022