Ebisara na 2016-12-22A maara nke ọma na Dacromet bụ ihe ngwọta mmiri na-agbasasị nke nwere zinc flake, flake aluminum na ihe mgbakwunye.Workpieces mgbe itinye na spraying, gwọọ 20min na 80 ℃ na tupu kpo oku ọkụ, 30min na 300 ℃ na-agwọ ọkụ.Mee hexavalent chromium bụ mmanya na-aba n'anya na mbelata organic n'ime mmiri nke mkpuchi dacromet anaghị agbaze na mmiri.
Okwesiri iburu n'uche na mbelata chromium hexavalent n'ime chromium trivalent na trivalent chromium oxidation n'ime chromium hexavalent bụ usoro mgbanwe.Ya mere, na sintered workpiece, trivalent chromium ga-anọgide na-abụ oxidized na hexavalent chromium, na hexavalent chromium bụ carcinogen, otú kọntaktị ga-eweta mmerụ ahụ ike.Ya mere, ihe ngwọta mkpuchi chromium nke nwere omenala abụghị ihe efu kpamkpam, ọ bụrụhaala na ịdị adị nke chromium hexavalent, ọ ga-enwe mmetụta ụfọdụ na gburugburu ebe obibi na ndị mmadụ, ya mere, ewu ewu nke chrome free Dacromet dị mkpa.
Site na mbọ nchedo gburugburu ebe obibi nke mba na-aga n'ihu na-ewusi ike, ọtụtụ ndị na-emepụta akụkụ akpaaka chọrọ akụkụ mkpuchi dacromet efu chrome.Na ọbụna mepụtara ụkpụrụ teknụzụ mkpuchi dacromet free chrome.Dị ka Volkswagen GMW3359, GM7111M wdg.
Dacromet free Chrome na-achọkarị ihe ndị ọzọ kama ngafe chromic acid na njikọ.Ihe mkpuchi dacromet na-enweghị Chrome na-eji silicon organic, silicon inorganic, molybdate, tungstate, phosphate dị ka ihe nkedo, otu ojiji nke scaly zinc / aluminom flake dị ka isi ihe mejupụtara, yana site na usoro ọgwụgwọ Post-ọgwụgwọ, iji nweta otu ọmarịcha ahụ. Nguzogide corrosion na mkpuchi Dacromet nwere chromium.
Teknụzụ Dacromet n'efu Chrome abụghị naanị nwere uru nke teknụzụ chromium-dacromet, kamakwa site na nkwadebe agba, mkpuchi, ihe nkiri, mkpuchi n'onwe ya enweghị chromium hexavalent, ezi uche nke nghọta nke akwụkwọ ndụ akwụkwọ ndụ na-adịghị egbu egbu adịghị emerụ ahụ.Site n'echiche gburugburu ebe obibi, na gburugburu ụwa nke chrome free Dacromet kama chrome dacromet n'ozuzu ntụziaka agaghị agbanwe, ga-eweta ọhụụ ọhụrụ nke ubi teknụzụ mgbochi corrosion nke mgbanwe gburugburu ebe obibi.
Oge nzipu: Jan-13-2022