Kwinsimbi engenasici, ngokuqhelekileyo ithathwa njengentsimbi engekho lula ukugqwala, kodwa ngokwenene isinyithi esingenasici sinokugqwala.Ukugqwala kunye nokuxhatshazwa kwe-corrosion yensimbi engenasici kubangelwa ukubunjwa kwefilimu ye-oxide ecebileyo ye-chromium (ifilimu ye-passivation) phezu kwayo.Oku kuxhathisa umhlwa kunye nokumelana nomhlwa kuyahambelana.
Uvavanyo lubonisa ukuba ukuxhathisa kwe-corrosion yentsimbi kumajelo abuthathaka afana nomoya kunye namanzi kunye nemithombo ye-oxidizing efana ne-nitric acid yanda ngokunyuka komxholo we-chromium kwintsimbi.Xa umxholo wechromium ufikelela kwipesenti ethile, ukuxhathisa ukubola kwentsimbi kutshintsha ngokukhawuleza., oko kukuthi, ukusuka kulula ukugqwala ukuya kungabi lula ukugqwala, kwaye ukusuka kwi-corrosion-resistant ukuya kwi-corrosion-resistant.
Ukuvavanya ukuba ivalve yensimbi engenasici inokugqwala, ivalve efanayo inokubekwa kwiindawo ezahlukeneyo zokuqinisekisa kunye nokuthelekisa.
Ngaphantsi kweemeko eziqhelekileyo, ukuba i-valve yensimbi engenasici ifakwe kwindawo eyomileyo, emva kwexesha elide, i-valve ayikho nje imeko enhle, kodwa ikhululekile nokugqwala.
Kwaye ukuba ivalve ifakwe emanzini olwandle kunye netyuwa eninzi, iya kuhlwa ngaphakathi kweentsuku ezimbalwa.Ngoko ke, ukuxhathisa kwe-corrosion kunye neepropathi zensimbi ezingenasici ze-valve zensimbi ezingenasici nazo kufuneka zilinganiswe ngokuhambelana nokusingqongileyo.
"Ukususela kwiimpawu zevalve yensimbi engenasici ngokwayo, isizathu sokuba ingenasici kukuba kukho umaleko wefilimu ene-chromium etyebileyo ye-oxide kumphezulu wokuthintela ii-athom ze-oksijini zangaphandle kunye namanye amasuntswana ekwenza umonakalo kwinto, ukuze ivalve ineempawu zentsimbi engatyiwayo.Ingcaphephe Nangona kunjalo, xa inwebu yonakaliswa yimiba efana nokusingqongileyo, iya kuhlwa ngokungena kweeathom zeoksijini kwaye ihlukane ne-iron ion.
Kukho izizathu ezininzi zokurusa kweevalvu zensimbi ezingenasici, ezifana ne-electrochemical reaction phakathi kwenwebu kunye namanye amasuntswana entsimbi okanye uthuli, kunye nokusetyenziswa komoya ofumileyo njengento ephakathi ukwenza umjikelo webhetri encinci, eyenza intsimbi engenasici. umhlwa ngaphezulu.
Omnye umzekelo ngowokuba ifilimu yomphezulu yentsimbi engenastainless idibana ngokuthe ngqo nolwelo oludlayo olufana neeasidi ezomeleleyo kunye neealkali, ezibangela ukuthotywa njalo njalo.Ngoko ke, ukwenzela ukuba i-valve yensimbi engenasici ingabi nokugqwala, kuyimfuneko ukunikela ingqalelo ekucoceni izinto ezisetyenziswa imihla ngemihla kwaye ugcine ubuso be-valve bucocekile.
Ngoko ke, ukuba ivalve yentsimbi engatyiwa ngumhlwa, umsebenzisi unokuyicombulula njani le ngxaki?
Okokuqala, kuyimfuneko ukucoca kunye nokukhuhla umphezulu we-valve yensimbi engenasici rhoqo ukususa iziqhotyoshelo kunye nokuphelisa izinto zangaphandle ezibangela ukugqwala.
Okwesibini, i-316 insimbi engenasici kufuneka isetyenziswe kwiindawo zolwandle, kuba izinto ezingama-316 zinokumelana nokubola kwamanzi olwandle.
Okwesithathu, ukubunjwa kweekhemikhali zeminye imibhobho yensimbi engenasici kwimarike ayihambelani nemigangatho yelizwe ehambelanayo kwaye ayihambelani neemfuno zezinto eziphathekayo ze-304, ngoko kuya kubangela ukugqwala.Kule nkalo, amagcisa athi xa abasebenzisi bekhetha iivalve zensimbi ezingenasici, kufuneka bakhethe ngokucophelela iimveliso ezivela kubavelisi abahloniphekileyo.Bund ivelufa yensimbi engenasici, imathiriyeli egqwesileyo, umgangatho olungileyo, lukhetho lwakho oluthembekileyo ~
Kukho iimeko ezimbalwa kuphela zokurusa kweentsimbi ezingenasici.Ngokuqhelekileyo, iivalvu zokhuseleko ezenziwe ngentsimbi engatyiwayo zikhuselekile kwaye azifani nezinye izinto.Ngoko ke, i-valve yale nto ixhaphake kakhulu kwindawo yemithombo yeendaba eyingozi, kwaye ikwayisitshixo sokuqinisekisa ukusebenza kwayo.
Ukongeza, iivalvu zensimbi ezingenasici zihlala zinxibelelana nemithombo yeendaba ezingamanzi, kwaye imeko-bume ihlala imanzi, kwaye i-advanteji ye-anti-rust yolu hlobo lwevalve ibe yinzuzo enkulu, kwaye yenza olu hlobo lwevalve lube lomelele ngakumbi.Ubomi benkonzo bandiswa kakhulu, kwaye impembelelo engafanelekanga yeengxaki ezinokwenzeka zokugqwala ziyapheliswa.
Ixesha lokuposa: Jul-11-2022