I-galvanizing ibhekisela kubuchwepheshe bokwelapha obungaphezulu bokunamathisela ungqimba lwe-zinc phezu kwensimbi, ingxubevange noma ezinye izinto ngenjongo yobuhle nokuvimbela ukugqwala.Indlela eyinhloko iwukuba idiphu elishisayo lifake i-galvanizing.
I-Zinc iyancibilika kuma-acids kanye ne-alkali, ngakho ibizwa ngokuthi i-amphoteric metal.Izinc ishintsha kancane emoyeni owomile.Emoyeni omanzi, indawo engaphezulu ye-zinc izokwakha ifilimu eyisisekelo ye-zinc carbonate.Iqukethe i-sulphur dioxide, i-hydrogen sulfide kanye nomkhathi wasolwandle, ukumelana nokugqwala kwe-zinc kubi, ikakhulukazi ekushiseni okuphezulu kanye nomswakama ophezulu oqukethe i-organic cordero emkhathini we-zinc kulula ukuba yi-zinc standard. ngi -0.76v. Nge-matrix yensimbi, i-zinc coating ingeye-anodic coating, esetshenziselwa ikakhulukazi ukuvimbela ukugqwala kwensimbi. Ukusebenza kwayo okuvikelayo kunobudlelwane obukhulu nobukhulu be-coating.Izakhiwo zokuzivikela nezokuhlobisa ze-zinc coating zingathuthukiswa kakhulu ngokudlula, ukugcoba noma ukugqoka nge-agent evikelayo.
Umgomo uwukukhipha ngokushesha i-oxidize ebusweni bensimbi nemikhiqizo yensimbi ukuze kwakhe ungqimba oluvikelayo lwefilimu ye-oxide eminyene.Kunezindlela ezimbili ezivame ukusetshenziswa kakhulu zokuba mnyama: ukushisisa kwe-alkaline kwendabuko kube mnyama kanye nokuba mnyama sekwephuzile ekamelweni lokushisa.Kodwa umphumela wenqubo yokuba mnyama kwezinga lokushisa kwegumbi ku-carbon steel ephansi awumuhle.Kungcono ukwenza insimbi ye-A3 ibe mnyama nge-alkali.I-alkalescent e-alkaline eye-blackening, i-blackening ephindwe kabili iphinde ibe mnyama emnyama. Izingxenye zotshwala olumnyama i-sodium hydroxide kanye ne-sodium nitrite. Izinga lokushisa elidingekayo ukuze kube mnyama libanzi, lisukela cishe ku-135 degrees Celsius kuya ku-155 degrees Celsius, futhi uthola indawo enhle, kodwa kuthatha isikhathi. Ekusebenzeni okungokoqobo, kufanele kuqashelwe ikhwalithi yokugqwala nokususwa kukawoyela ngaphambi kokuba ucezu lokusebenzela lube mnyama, kanye nokwehluka kwezinqubo zokucwiliswa kukawoyela zibe mnyama. Uketshezi lomuthi oluthi "bluing" luthatha i-alkaline oxidation noma i-asidi oxidation.Inqubo yokwenza ifilimu ye-oxide endaweni yensimbi ukuvimbela ukugqwala ibizwa ngokuthi "bluing".Ifilimu ye-oxide eyakhiwe phezu kwensimbi emnyama ngemva kokwelashwa "i-bluing", ungqimba lwangaphandle ngokuyinhloko luyi-ferric oxide futhi ungqimba lwangaphakathi luyi-ferrous oxide.
Ama-bolts anamandla aphezulu ngokuvamile asetshenziswa emalungeni abalulekile, ngaphansi kokucindezeleka okukhulu kanye ne-shear.Isinyathelo sokugcina ekucutshungulweni kwe-bolt ukwelashwa kokushisa, okuvame ukubizwa ngokuthi ukucisha, ukwandisa amandla ama-bolts.Nokho, i-hydrogen embrittlement iyenzeka kalula ngenqubo yokufaka ama-galvanizing. ekhiqizwa ukushiswa kabusha kwamabholithi anamandla amakhulu ifilimu ye-oxidation ezinzile.Ngeke igqwale uma ingahlangene nezinto ezigqwalayo.
https://www.china-bolt-pin.com/
Isikhathi sokuthumela: Sep-09-2019