Galvanizing inoreva tekinoroji yekurapa yekuisa zingi pamusoro pesimbi, alloy kana zvimwe zvinhu nechinangwa chekunaka uye kudzivirira ngura.Nzira huru inopisa dip galvanizing.
Zinc inonyungudika muasidhi uye alkali, saka inodaidzwa kunzi amphoteric metal.Zinc inochinja zvishoma mumhepo yakaoma.Mumhepo yakanyorova, zinc surface inoumba dense basic zinc carbonate film.Iine sulfur dioxide, hydrogen sulfide uye Marine atmosphere, zinc corrosion kushorwa kwakashata, kunyanya mukupisa kwepamusoro uye humidity yakakwira ine organic acid atmosphere, zinc coating iri nyore kuita corroded.The standard electrode potential of zinc is -0.76v.Kune matrix esimbi, zinc coating ndeye anodic coating, iyo inonyanya kushandiswa kudzivirira kupera kwesimbi.Basa rayo rekudzivirira rine hukama hukuru nehupamhi hwekuputira.Idziviriro uye yekushongedza zvinhu zve zinc coating zvinogona kuvandudzwa zvakanyanya nekupfuura, kusvibisa kana kuvhara nemumiririri wekudzivirira.
The musimboti kukurumidza oxidize pamusoro pamusoro simbi uye simbi zvigadzirwa kuumba dense oxide film inodzivirira layer.Kune mbiri dzinowanzoshandiswa nzira blackening: echinyakare alkaline kupisa blackening uye kunonoka kusviba panguva yekamuri tembiricha.Asi mhedzisiro yekamuri tembiricha blackening process. pa low carbon steel haina kunaka.Zviri nani kusviba simbi yeA3 nealkali.Alkalescent blackening yakakamukana,vanezve blackening uye two blackening distinction.Zvinhu zvikuru zvedoro dema isodium hydroxide nesodium nitrite.Temperature inodiwa pakusviba ndeye yakafara, kubva pa135 degrees Celsius kusvika 155 degrees Celsius, uye unowana nzvimbo yakanaka, asi zvinotora nguva yakati. kunyudzwa kwemafuta mushure mekusviba. Hunhu hwekusviba kazhinji hunosiyana nemaitiro aya. Metal "bluing" mushonga wemvura unotora alkaline oxidat.ion kana acid oxidation.Kugadzira firimu re oxide pamusoro pesimbi kudzivirira kuparara kunonzi "bluing".The oxide film yakaumbwa pamusoro pesimbi nhema mushure mekurapwa kwe "bluing", kunze kwekunze kunonyanya ferric oxide uye Inner layer iferrous oxide.
Yakakwirira - mabhoti ane simba anowanzoshandiswa mumajoini anokosha, pasi pekunetseka kukuru uye shear.Nhanho yekupedzisira mukugadzirwa kwebhoti ndeyekupisa kupisa, kunowanzozivikanwa se quenching, kuwedzera simba remabhoti.Zvisinei, hydrogen embrittlement inoitika nyore nyore mukugadzirisa. galvanizing bolts.Hydrogen embrittlement inowanzoonekwa nekunonoka kuputsika.Izvi zvinoderedza simba repamusoro-simba mabhoti.Saka, iyo yakasviba yakasviba inobudiswa nekugadzirisazve kurapwa kwepamusoro-simba mabhoti ifirimu yakagadzikana ye oxidation.Haizoiti ngura kana ichiita. haina kusangana nezvinhu zvinopisa.
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Nguva yekutumira: Sep-09-2019