Intsimbi engatyiwayo ayizuhlwa, kodwa akulula ukuyirusa. Ngaphantsi kwezinye iimeko, insimbi engenasici iya kuhlwa. Umphezulu wensimbi engenasici unomfanekiso obhityileyo kakhulu, obhityileyo kunye nozinzile wechromium etyebileyo yeoksidi, irust yensimbi engenasici, ngale filimu yeoksidi ukunqanda i-athomu yeoksijini ukungena kwi-oxidation reaction kunye nomhlwa. Enyanisweni, ezinye iintsimbi ezingenasici zinezo zombini ukuxhathisa umhlwa kunye nokumelana ne-asidi (ukumelana nokubola). Umhlwa kunye nokumelana nokubola kwensimbi engenasici kubangelwa ukubunjwa kwefilimu ene-chromium ecebileyo ye-oxide (ifilimu ye-passivation) kwindawo yayo, eyahlula isinyithi kwi-medium yangaphandle, ikhusela isinyithi ukuba singagxuphuleki ngakumbi, kwaye inamandla zilungise. Ukuba yonakele, i-chromium kwintsimbi iya kuvuselela ifilimu yokupasa kunye ne-oksijini ephakathi kwaye iqhubeke idlala indima yokukhusela. Xa ifilimu ye-oxide yonakalisiwe, iyarusa ngokulula.
I-1) Ubume bensimbi engenasici bunomswakama, kwimeko yamanzi kunye ne-oksijini, ukubunjwa kwe-asidi ye-organic kunye nomonakalo we-rosion kumphezulu wensimbi engenasici.
I-2) Iimveliso zetsimbi ezingenasici zonakaliswa ngomatshini ngezixhobo zokufakela kwaye zonakalise ifilimu yokukhusela indawo. Ngokomzekelo, xa iibholiti zensimbi ezingenasici zifakwe kwi-engineering yodonga lwamakhethini angaphandle, i-wrench ibangela umonakalo womatshini kwindawo apho i-bolt head contacts. Emva kokuhlanjwa kwemvula, intloko yeebholiti zentsimbi iya kubonakala ngumhlwa odadayo omncinci.
3) Kukho ukungcola kothuli okanye iincinci zetsimbi ebusweni bensimbi engenasici, ekulula ukuba i-electrochemical iphendule ngensimbi engenasici emoyeni omanzi ukukhawulezisa ukubola kwensimbi engenasici.
4) Umphezulu wensimbi engenasici evezwe kwi-asidi, i-alkali, ityuwa kunye nezinye izinto zixhomekeke kwi-chemical reaction corrosion. Ngokomzekelo, i-fasteners yodonga lwamakhethini kwiidolophu eziselunxwemeni zikhethwa ngokubanzi kwiimveliso zensimbi ezingenasici ze-316 (i-corrosion-resistant ngaphezu kwe-304 insimbi engenasici), ngenxa yokuba umxholo wetyuwa ephezulu emoyeni wezixeko ezinxweme kulula ukubangela ukubola kwintsimbi engenasici.
Ngoko ke, ukuze wenze iimveliso zensimbi ezingenasici zigcine zikhanya kwaye zingagqwali, kuyimfuneko ukukhetha izinto ezifanelekileyo zeemveliso zensimbi ezingenasici, ezilandelwa kukucoca nokugcina iimveliso zensimbi ezingenasici, ukususa ukungcola komhlaba ukuphepha ukusabela kunye nokubola.
Ixesha lokuposa: Aug-19-2022