Chifukwa chiyani mabawuti wamba amafunikira malata, pomwe ma bolt amphamvu kwambiri amadetsedwa

Galvanizing amatanthauza pamwamba mankhwala luso plating wosanjikiza nthaka pamwamba pa zitsulo, aloyi kapena zipangizo zina pofuna kukongola ndi dzimbiri prevention.The njira yaikulu ndi otentha divi galvanizing.

Zinc amasungunuka mu zidulo ndi zamchere, choncho amatchedwa amphoteric metal.Zinc kusintha pang'ono mu mpweya youma.Mu mpweya wonyowa, nthaka pamwamba kupanga wandiweyani zofunika nthaka carbonate film.Muli sulfure dioxide, hydrogen sulfide ndi Marine atmosphere, zinc dzimbiri. kukana ndi osauka, makamaka kutentha ndi mkulu chinyezi munali organic asidi mpweya, nthaka ❖ kuyanika n'zosavuta corroded.The muyezo elekitirodi mphamvu ya nthaka ndi -0.76v. Kwa matrix achitsulo, zokutira za zinki ndi za anodic ❖ ❖, zomwe zimagwiritsidwa ntchito makamaka poletsa dzimbiri lachitsulo. Ntchito yake yotetezera imakhala ndi chiyanjano chachikulu ndi makulidwe a zokutira.Zotetezera ndi zokongoletsera zazitsulo za zinc zimatha kusinthidwa kwambiri ndi passivation, kutsekemera kapena kuvala ndi wothandizira chitetezo.

Mfundo yake ndi kuthamangitsa oxidize pamwamba pa chitsulo ndi zitsulo zopangidwa ndi chitsulo kuti apange wandiweyani woteteza filimu ya oxide. Pali njira ziwiri zomwe zimagwiritsidwa ntchito popanga blacken: chikhalidwe cha alkaline Kutentha kwakuda ndikuda mochedwa kutentha kwa chipinda. pachitsulo chochepa cha carbon sichili bwino.Ndi bwino kudetsa chitsulo cha A3 ndi alkali.Kukuda kwa alkalescent kumagawanika, kukhalanso ndi blackening ndi kusiyanitsa kuwiri kwakuda.Zigawo zazikulu za mowa wakuda ndi sodium hydroxide ndi sodium nitrite.Kutentha kumafunika kuti mdima ukhale lonse, kuyambira pafupifupi 135 digiri Celsius mpaka 155 digiri Celsius, ndipo mumapeza malo abwino, koma zimatenga nthawi. Kumizidwa kwamafuta pambuyo pakuda.Ubwino wakuda wakuda nthawi zambiri umasiyana ndi njira izi.Chitsulo "bluing" mankhwala amadzimadzi amatenga okosijeni wamchere kapena asidi oxidation.Njira yopangira filimu ya oxide pamwamba pazitsulo kuti zisawonongeke zimatchedwa "bluing". filimu ya okusayidi yopangidwa pamwamba pa chitsulo chakuda pambuyo pa chithandizo cha "bluing", wosanjikiza wakunja umakhala ndi ferric oxide ndipo wosanjikiza wamkati ndi ferrous oxide.

Maboti apamwamba kwambiri amagwiritsidwa ntchito m'magulu ofunikira, potengera kupsinjika kwakukulu ndi kukameta ubweya. Njira yomaliza yopangira bolt ndi chithandizo cha kutentha, chomwe chimadziwika kuti quenching, kuwonjezera mphamvu ya ma bolts. galvanizing bolts.Kutsekemera kwa haidrojeni nthawi zambiri kumadziwika ndi kuchedwa kwapang'onopang'ono.Izi zimachepetsa mphamvu ya ma bolts amphamvu kwambiri.Chotero, pamwamba wakuda wopangidwa ndi kutenthetsanso chithandizo chazitsulo zamphamvu kwambiri ndi filimu yokhazikika ya okosijeni. sichikhudzana ndi zinthu zowononga.

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