Ikhoyili ecatshulwe ngombala inobunzima obulula, inkangeleko entle kunye nokuxhathisa okuhle kokubola.Isetyenziswa ikakhulu kushishino lwentengiso, ishishini lokwakha, ishishini lezixhobo zasekhaya, ishishini lezixhobo zombane, ishishini lefenitshala kunye neshishini lezothutho.Ngokwemeko-bume yokusetyenziswa eyahlukileyo, yahlulwe yaba ziindidi ezintathu: i-hot-dip galvanized substrate, i-hot-dip aluminium-zinc substrate kunye ne-electro-galvanized substrate.Ngenxa yeemeko ezahlukeneyo, ubomi benkonzo buhluke kakhulu.Namhlanje, siza kujonga ngokuthe ngqo kwizinto ezichaphazela ubomi benkonzo yamacwecwe afakwe umbala?
Ngokwesiseko se-galvanizing, iikhoyili ezifakwe ngombala ziphathwa ngokucocwa komhlaba kunye nefilimu yokuguqulwa kweekhemikhali, kwaye emva koko ifakwe nge-primer (igxininise kwi-adhesion kunye ne-anti-corrosion) kunye ne-topcoat (igxininise ekuchaseni imozulu kunye nokuhombisa), kunye neengubo ezimbini ezixineneyo zezinto eziphilayo. .Umqobo okhuselayo ukhusela ngokufanelekileyo ukungena kweeamolekyu zamanzi kunye neendaba ezitshabalalisayo, kwaye unamandla okumelana nokutshatyalaliswa kunye nokubola kokukhanya kwendalo njengemitha ye-ultraviolet.Ubunzima bengubo kufuneka bufikelele kubukhulu befilimu obuchaziweyo ukuze bafumane ifilimu ekhuselayo, ukunciphisa amanzi kunye ne-oxygen permeability, kunye nokuthintela ukubola kwengubo.Kuhlobo olufanayo lwepeyinti, ubukhulu bepeyinti yinto ephambili echaphazela ukubola.
Xa ubukhulu bengubo bungaphantsi kwe-10μm, ukuxhathisa kwe-corrosion kaninzi akukwazi ukufikelela kwi-500h;kwisithuba se-10～20μm, emva komjikelezo ofanayo wokuvavanya, ukwandisa ubukhulu bengubo kunempembelelo ebalulekileyo ekunciphiseni inqanaba lokubola kwengubo;phakathi kwe-20～26μm Ngexesha elifanayo, izinga lokubola kwengubo liyanda kunye nobukhulu, kwaye utshintsho alubonakali;kunye nobunzima bokulawula inkqubo yokwaleka buya kwanda ngokunyuka kobunzima.I-coating engaphezulu kwe-26μm ixhomekeke kwizinto ezingathandekiyo ezifana nokuqina kwemiphetho;inokubonwa kuVandlakanyo oluBanzi lweendleko kunye nokusebenza, i-20μm lixabiso eliphantsi lokuphumeza ukuxhathisa okulungileyo kunye nokuchasana kwe-corrosion emoyeni.
Ixesha lokuposa: Jul-05-2022
