1, Zvikonzero zvekugadzira maitiro: Ichi ndicho chimwe chezvikonzero zve oxidation yezvigadzirwa zvesimbi.Panyaya yekugadzira maitiro uye hunhu hwechigadzirwa, kuumba yakaonda oxide firimu pamusoro pechigadzirwa ndiyo nzira yekutanga kudzivirira oxidation, uye zvakare mutsauko pakati pezvigadzirwa zvesimbi.Imwe yemhando huru yezvimwe zvigadzirwa zvesimbi, asi kana iyo oxide firimu isina kukwana kana kuregera nekuda kwekusakwana kana kuregeredza tekinoroji yekugadzira, iyo okisijeni iri mumhepo ichaita zvakanangana nezvimwe zvinhu zviri muchigadzirwa, zvichikonzera kutaridzika kwechigadzirwa.kuratidza oxidation.
2, Zvikonzero zvekuumbwa kwechigadzirwa reshiyo: Kuti vaderedze mitengo yekugadzira, vamwe vagadziri vanodzikisa chikamu chezvimwe zvakakosha senge chromium uye nickel, uye kuwedzera zvirimo zvezvimwe zvinhu zvakaita sekabhoni.Chiitiko chekugadzirwa kwechiyero chekuumbwa hachingodzikisi zvakanyanya kunaka kwechigadzirwa, semuenzaniso, kana zviri mukati mechromium element mu304 stainless simbi chubhu isina kukwana, haingokanganisa kushora uye kuumbwa kwechigadzirwa, asi zvakare. ine zvingangoitika kana ichishandiswa muindasitiri yemakemikari, michina uye maindasitiri ekugadzira.Panguva imwecheteyo, inokanganisawo chitarisiko uye antioxidant zvinhu zvechigadzirwa.
3, Artificial zvikonzero: Ichi zvakare chimwe chezvikonzero zvakajairika zvechigadzirwa oxidation izvo vamwe vatengi vanosangana nazvo kana vachishandisa zvigadzirwa zvesimbi.Vamwe vatengi vanoshanda zvisina kunaka mukushandiswa kwechigadzirwa nekugadzirisa, kunyanya zvimwe zvigadzirwa zvepombi yesimbi isina tsvina inoshandiswa muindasitiri yemidziyo yemakemikari echikafu.Mukana we oxidation wakakwira.Kune oxidation yakagadzirwa nevanhu yezvigadzirwa zvesimbi, zvinodikanwa kuve neruzivo rwekushandisa chigadzirwa uye nguva dzose uye inobudirira kugadzirisa nekugadzirisa, kuitira kuti kuderedza oxidation inokonzerwa nekushandiswa kusina kunaka.
Simbi isina tsvina inotsamira pane yakaonda kwazvo, yakasimba, yakanaka uye yakagadzikana chromium-rich oxide film (inodzivirira firimu) yakaumbwa pamusoro payo kudzivirira kuenderera kuchipinda uye oxidation yemaatomu eokisijeni kuti uwane kugona kurwisa ngura.Pane chimwe chikonzero, firimu iri rinoramba richikuvadzwa, maatomu eokisijeni ari mumhepo kana mvura icharamba ichipinda kana maatomu esimbi musimbi acharamba achiparadzana, achigadzira yakasununguka iron oxide, uye nzvimbo yesimbi inoramba ichiita ngura.Kune akawanda marudzi ekukuvadzwa kweiyi firimu repamusoro, rakajairika muhupenyu hwezuva nezuva ndeaya anotevera:
1. Pamusoro pesimbi isina tsvina, guruva rine zvimwe zvinhu zvesimbi kana zvakabatanidzwa zveheterogeneous metal particles zvinounganidza.Mumhepo ine hunyoro, mvura yakanyungudutswa pakati pezvisungo nesimbi isina tsvina inobatanidza zviviri izvi mubhatiri diki, izvo zvinokonzeresa kuita kwe electrochemical reaction uye inodzivirira simbi isina tsvina.Iyo firimu yakakuvadzwa, iyo inonzi electrochemical corrosion.
2. Pamusoro pesimbi isina tsvina inonamatira kune organic juices (yakadai semiriwo, noodle soup, nezvimwewo), uye pamberi pemvura neokisijeni, organic acids inoumbwa, uye organic acids inoparadza simbi yesimbi kwenguva yakareba.
3. Pamusoro pesimbi isina tsvina inonamatira ine acids, alkali uye munyu (zvakadai semvura yealkali uye mvura yeraimu inoputika kubva pamadziro ekushongedza), zvichiita kuti pave nekuora.
4. Mumhepo yakasvibiswa (yakadai semhepo ine sulfide yakawanda, carbon oxide, nitrogen oxide), paunosangana nemvura yakanyungudutswa, inoumba makwapa emvura e sulfuric acid, nitric acid uye acetic acid, zvichiita kuti kemikari iparadze.
Mamiriro ezvinhu ari pamusoro apa anogona kukonzera kukanganisa kwefirimu inodzivirira pamusoro pesimbi isina tsvina uye inokonzera ngura.Naizvozvo, kuve nechokwadi chekuti simbi yepasi inopenya zvachose uye haina ngura, tinokurudzira:
1. Nzvimbo yezvigadzirwa zvesimbi isina tsvina inofanira kucheneswa uye kukweshwa kazhinji kubvisa zvakabatanidzwa uye kubvisa zvinhu zvekunze zvinokonzera kugadziriswa;
2. chengetedza nharaunda yakaoma;
3. Mushonga wekemikari wemamwe mapaipi esimbi asina tsvina pamusika haugoni kusangana nemitemo yenyika inoenderana uye haigoni kuzadzisa zvinodiwa nezvinhu.Naizvozvo, ichakonzerawo ngura, izvo zvinoda kuti vashandisi vasarudze zvakanaka zvigadzirwa kubva kune vane mbiri vanogadzira.
Simbi isina simbi inokwanisa kurwisa kusvibiswa kwemuchadenga-kureva, kuramba ngura, uye zvakare inokwanisa kukanganisa mumidhiya ine acids, alkalis, uye munyu-kureva, corrosion resistance.Nekudaro, saizi yeapo-anti-corrosion kugona kunosiyana nekemikari yesimbi yayo pachayo, mamiriro ekuwedzera pamwe chete, mamiriro ekushandiswa uye mhando yezvenhau zvakatipoteredza.Semuyenzaniso, 304 simbi pombi ine akanakisa anti-corrosion kugona munzvimbo yakaoma uye yakachena, asi kana ikaendeswa kunzvimbo yegungwa, inokurumidza oxidize mumhute yegungwa ine munyu wakawanda, nepo 316 simbi pombi inoita zvakanaka. .Nokudaro, haisi yemhando ipi zvayo yesimbi isina tsvina inogona kurwisa corrosion uye ngura mune chero mamiriro ezvinhu.
Nguva yekutumira: Kubvumbi-17-2023