I-galvanizing ibhekisela kubuchwepheshe bonyango lomphezulu wokubeka umaleko we-zinc kumphezulu wesinyithi, i-alloy okanye ezinye izinto ngenjongo yobuhle kunye nokuthintela umhlwa.Eyona ndlela iphambili yi-dip galvanizing eshushu.
I-Zinc iyanyibilika kwiiasidi kunye nealkali, ngoko ibizwa ngokuba yi-amphoteric metal.Zinc itshintsha kancinci emoyeni owomileyo.Emoyeni ofumileyo, umphezulu we-zinc uya kwenza ifilimu eshinyeneyo ye-zinc carbonate film.Iqulethe i-sulfur dioxide, i-hydrogen sulfide kunye ne-Asmosphere yaseLwandle, ukuxhathisa kwe-zinc corrosion kubi, ngakumbi kubushushu obuphezulu kunye nokufuma okuphezulu okuqulethe i-coronic acid esemgangathweni ye-zinc-zinc lula emoyeni. yi -0.76v. Kwi-matrix yensimbi, i-zinc yokugqoka i-anodic coating, eyona nto isetyenziselwa ukuthintela ukubola kwentsimbi. Ukusebenza kwayo okukhuselekileyo kunobudlelwane obukhulu kunye nobukhulu be-coating.Iipropati zokukhusela kunye nokuhlobisa i-zinc coating inokuphuculwa kakhulu ngokugqithiswa, ukuhlambalaza okanye ukugubungela nge-agent ekhuselayo.
Umgaqo kukuba ngokukhawuleza oxidize umphezulu intsimbi kunye neemveliso zentsimbi ukwenza ifilimu oxide eshinyeneyo umaleko olukhuselayo.Zimbini iindlela ezisetyenziswa ngokuqhelekileyo mnyama: zemveli ukufudumeza alkaline blackening kunye blackening kade kwiqondo lokushisa.Kodwa ifuthe lenkqubo ubushushu begumbi mnyama kwikhabhoni ephantsi intsimbi ayilunganga.Kungcono ukuba mnyama A3 steel nge alkali.Alkaledivistined ezimbini blackening kunye blackening engundoqo kwakhona blackening emnyama. Izixhobo zotywala obumnyama ziyi-sodium hydroxide kunye ne-nitrite yesodium. Ubushushu obufunekayo ukuze kumnyama kubanzi, ukusuka malunga ne-135 degrees Celsius ukuya kwi-155 degrees Celsius, kwaye ufumana umgangatho omnandi, kodwa kuthatha ixesha elithile. Kwintsebenzo ebonakalayo, kufuneka kuhlawulwe kumgangatho wokugqwala kunye nokususwa kweoli phambi kokuba mnyama we-workpiece, kunye nokwahluka kwe-oyile yokutshintsha emva kokucwiliswa kweoli. "I-bluing" yolwelo lwamayeza ithatha i-alkaline oxidation okanye i-asidi oxidation.Inkqubo yokwenza ifilimu ye-oxide kwindawo yesinyithi ukuthintela ukubola kuthiwa "i-bluing".Ifilimu ye-oxide eyenziwe phezu kwesinyithi esimnyama emva konyango "i-bluing", umaleko wangaphandle ubukhulu becala yi-oxide ye-ferric kunye ne-inner oxide.
Iibholiti zamandla aphezulu zisetyenziswa ngokubanzi kumalungu abalulekileyo, ngokuxhomekeke kuxinzelelo olukhulu kunye ne-shear.Isinyathelo sokugqibela kwi-bolt processing yonyango lobushushu, eyaziwa ngokuba yi-quenching, ukunyusa amandla e-bolts.Nangona kunjalo, i-hydrogen embrittlement yenzeke ngokulula kwinkqubo yokugaya iibholiti. eveliswa ngonyango lokufudumeza kwakhona kweebholiti zamandla aphezulu yifilimu ene-oxidation ezinzileyo.Ayiyi kugqwala xa ingadibananga nezinto ezitshabalalisayo.
https://www.china-bolt-pin.com/
Ixesha lokuposa: Sep-09-2019