Kuthunyelwe ku 2016-12-22Kuyaziwa ukuthi i-Dacromet iyisisombululo samanzi esihlakazekayo esihlanganisa i-zinc flake, i-aluminium flake kanye nezithasiselo.Izinto zokusebenza emva kokucwiliswa nokufafaza, ukwelapha i-20min ku-80 ℃ esithandweni sokushisa kwangaphambili, i-30min ku-300 ℃ esithandweni somlilo.Yenza i-chromium ene-hexavalent yayi-adipic alcohol futhi ukuncishiswa kwezinto eziphilayo kube uketshezi lwe-dacromet coating akuncibiliki emanzini.
Kufanele kuqashelwe ukuthi ukuncishiswa kwe-chromium ene-hexavalent ibe i-chromium e-trivalent kanye ne-trivalent chromium oxidation ku-chromium ene-hexavalent kuyinqubo ebuyiseleka emuva.Ngakho-ke, ocwecweni lokusebenza oluhlanganisiwe, i-chromium eyi-trivalent izoqhubeka ifakwe i-oxid ibe i-chromium ene-hexavalent, futhi i-chromium ene-hexavalent iwumdlavuza, ngakho ukuthintana kuzoletha ukulimala empilweni.Ngakho-ke, ikhambi lendabuko eliqukethe i-chromium alikhiqizi ngokuphelele, inqobo nje uma ukuba khona kwe-chromium ene-hexavalent, lizoba nomthelela othile emvelweni nakubantu, ngakho-ke, ukuthandwa kwe-chrome free Dacromet kubalulekile.
Njengoba imizamo kazwelonke yokuvikela imvelo iqhubeka iqina, bayanda abakhiqizi bezingxenye zezimoto badinga izingxenye ezimbozwe nge-chrome zamahhala zedacromet.Futhi kwathuthukiswa izindinganiso zobuchwepheshe zokuhlanganisa i-dacromet yamahhala ye-chrome.NjengeVolkswagen GMW3359, GM7111M njll.
I-Chrome mahhala i-Dacromet ibheka ikakhulukazi ezinye izinto esikhundleni se-chromic acid passivation and bonding.I-Chrome yamahhala ye-Dacromet enamathela ikakhulukazi isebenzisa i-silicon ephilayo, i-silicon ye-inorganic, i-molybdate, i-tungstate, i-phosphate njenge-binder, ukusetshenziswa okufanayo kwe-scaly zinc / i-aluminium flake njengengxenye eyinhloko yokugcwalisa, nangochungechunge lwe-seal Post-treatment, ukuzuza okufanayo okuhle kakhulu. ukumelana nokugqwala nge-chromium equkethe i-Dacromet coating.
Ubuchwepheshe be-Chrome yamahhala be-Dacromet abunayo nje inzuzo yobuchwepheshe be-chromium-dacromet, kodwa futhi kusukela ekulungiseleleni upende, ukugqoka, ifilimu, ukunamathela ngokwayo akunaso ngokuphelele i-chromium ene-hexavalent, umqondo wangempela wokugcwaliseka kohlaza okungenabuthi okungenabungozi.Ngokombono wemvelo, kububanzi bomhlaba be-chrome free Dacromet esikhundleni se-chrome dacromet inkomba evamile ngeke ishintshe, izoletha umjikelezo omusha womkhakha wobuchwepheshe bokulwa nokugqwala wenguquko yezemvelo.
Isikhathi sokuthumela: Jan-13-2022