Ngexesha lokuphatha, indibano, i-welding, i-welding seam inspection, kunye nokusetyenzwa kweepleyiti ze-liner zangaphakathi, izixhobo, kunye nezixhobo zetanki zensimbi ezingenasici, izinto ezingcolileyo ezinjengamabala e-oyile, imikrwelo, i-rust, ukungcola, i-low-melting-point-metal pollunts. , ipeyinti, i-welding slag, kunye ne-splatter ziyaziswa.Ezi zinto zichaphazela umgangatho womphezulu wensimbi engenasici, ziyonakalisa ifilimu yayo yokudlula, zinciphisa ukuxhathisa kwe-corrosion, kwaye zenze ukuba zichaphazeleke kumajelo eendaba ezonakalisayo kwiimveliso zekhemikhali ezithuthwa kamva, ezikhokelela kwi-pitting, i-intergranular corrosion, kunye noxinzelelo lwe-corrosion cracking.
Iitanki zensimbi ezingenasici, ngenxa yokuthwala iindidi zeekhemikhali, zineemfuno eziphezulu zokuthintela ukungcoliseka kwempahla.Njengoko umgangatho womphezulu weepleyiti zentsimbi etyiwayo eziveliswe ekhaya uhlwempuzekile, kuyinto eqhelekileyo ukwenza oomatshini, imichiza, okanyeelectrolytic polishingkwiipleyiti zensimbi ezingenasici, izixhobo, kunye nezincedisi phambi kokucoca, ukuchola, kunye nokupasa ukunyusa ukuxhathisa ukubola kwentsimbi engatyiwayo.
Ifilimu ye-passivation kwinsimbi engenasici ineempawu eziguquguqukayo kwaye akufanele ithathwe njengento yokumisa ngokupheleleyo kwi-corrosion kodwa kunoko ukubunjwa kwe-diffusing layer yokukhusela.Ivame ukonakala phambi kwee-agent zokunciphisa (ezifana ne-chloride ion) kwaye inokukhusela kwaye ilungise phambi kwee-oxidants (ezifana nomoya).
Xa insimbi engenasici ibonakaliswe emoyeni, ifilimu ye-oxide ifom.
Nangona kunjalo, iipropathi zokukhusela le filimu azanele.Ngokusebenzisa ukucholwa kweasidi, ubukhulu obuphakathi kwe-10μm yeumgangatho wentsimbi engenasicii-corrod, kwaye umsebenzi wekhemikhali we-asidi wenza izinga lokuchithwa kwiindawo ezineziphene eziphezulu kunezinye iindawo eziphezulu.Ngaloo ndlela, i-pickling yenza ukuba yonke indawo ithande ukulingana okufanayo.Okubalulekileyo, ngokukhetha kunye nokupasa, intsimbi kunye neeoksidi zayo zinyibilika ngokufanelekileyo xa kuthelekiswa nechromium kunye neeoksidi zayo, isusa umaleko ophelelwe yichromium kwaye ityebisa umphezulu ngechromium.Ngaphantsi kwesenzo sokudlula se-oxidants, ifilimu epheleleyo kunye nezinzileyo ye-passivation films yenziwa, kunye nokubakho kwefilimu ye-chromium-rich passivation film ifikelela kwi-+1.0V (SCE), kufuphi nesakhono sesinyithi esihloniphekileyo, ekwandiseni ukuzinza kwe-corrosion.
Ixesha lokuposa: Nov-28-2023