Intsimbi engacocekanga ixatyiswa ngokubanzi ngenxa yokuxhathisa ukubola kunye nenkangeleko yayo ecocekileyo, yanamhlanje. Kodwa kwanale mathiriyeli yomelele izuza kunyango olongezelelweyo ukomeleza ukuxhathisa kwayo ekudlekeni - inkqubo eyaziwa ngokubaukuthandabuza. Olu nyango lwekhemikhali ludlala indima ebalulekileyo ekwandiseni ixesha elide kunye nokusebenza kwentsimbi engatyiwayo kuwo wonke amashishini.
Kweli nqaku, sichaza ukuba yintoni i-passivation, isebenza njani, kutheni ibalulekile, kwaye isetyenziswa phi na. Njengomboneleli okhokelayo wentsimbi engenastainless,sakysteelinikeza zombini i-passivated kunye ne-non-passivated imveliso yensimbi engenasici elungiselelwe ukuhlangabezana nemigangatho yehlabathi.
Yintoni Passivation
I-Passivation yinkqubo yeekhemikhali esusa intsimbi yamahhala kunye nezinye izinto ezingcolileyo ezivela kwinsimbi engenasici. Emva kokucoca, isinyithi siphathwa nge-oxidant epholileyo, ngokuqhelekileyo i-nitric acid okanye i-citric acid, ukukhuthaza ukubunjwa kwe-oxide enqabileyo, ebonakalayo ebonakalayo phezu komhlaba.
Lo maleko okhuselayo uphucula ngokubonakalayo ukuxhathisa kwesinyithi kwirusi kunye ne-corrosion ngokuthintela iziza ezisebenzayo ezikhokelela ekuphenduleni kweekhemikhali kunye nokusingqongileyo.
I-passivation ayiyonto yokwaleka okanye i-plating. Endaweni yoko, yongeza iipropathi zendalo ezikhuselayo zentsimbi engenastainless ngokuvumela umxholo wayo wechromium wenze umaleko ozinzileyo we-passive oxide.
Indlela iPasivation isebenza ngayo
Inkqubo ibandakanya amanyathelo amathathu aphambili:
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Ukucoca
Zonke i-oyile, igrisi, kunye nenkunkuma kufuneka zisuswe kusetyenziswa izicoci ezisekelwe kwi-alkaline okanye kwi-solvent. Oku kuqinisekisa ukuba ibhafu ye-asidi inokuqhagamshelana nentsimbi engenanto. -
Unyango lokuhlambela ngeasidi
Intsimbi engenastainless ke intywiliselwa kwisisombululo seasidi edlulayo, njenge-nitric okanye i-citric acid. Oku kususa i-iron engaphezulu kwaye kubangele ukwakheka kwe-chromium oxide layer. -
Ukucoca kunye nokomisa
Emva kokuhlamba i-asidi, izinto eziphathekayo zihlanjululwe kakuhle ngamanzi adibeneyo kwaye zomiswe. Oku kuqinisekisa ukuba akukho acid okanye ungcoliseko uhlala phezu komhlaba.
Isiphumo singumphezulu ogudileyo, ozinzile ngokwekhemikhali omelana nokubola nakwindawo ezingqongileyo ezirhabaxa.
Kutheni iPasivation ibalulekile
Nangona intsimbi engenastainless iqulethe ichromium kwaye sele inganyangeki kwi-corrosion, ukusetyenzwa ngoomatshini njengokusika, ukuwelda, okanye ukwenziwa komatshini kunokwazisa intsimbi yasimahla kumphezulu. La masuntswana entsimbi anokubangela ukonakala kwendawo ukuba ayisuswanga.
I-Passivation ibuyisela ingqibelelo yobuso bentsimbi ngokuthi:
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Ukususa ungcoliseko
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Ukuphucula ukuxhathisa umhlwa
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Ukuphucula ukuqina kwiindawo ezinobundlobongela
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Ukuxhasa ucoceko kunye nemigangatho yococeko
Kumashishini afana nokulungiswa kokutya, amayeza, kunye ne-aerospace, ukugqithiswa akukhuthazwa nje - kuyafuneka rhoqo.
Usetyenziso oluQhelekileyo lwePasvated Stainless Steel
I-Passivation isetyenziswa ngokubanzi kumacandelo afuna ukuxhathisa kwi-corrosion yexesha elide kunye nococeko. Eminye imizekelo ibandakanya:
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Izixhobo zokuLungisa ukutya kunye nesiselo
Ukuthintela ukungcoliseka kunye nokukhula kwebhaktheriya kwiindawo ezicocekileyo. -
Izixhobo zoNyango kunye nezoNyango
Izixhobo kunye namalungu otyando kufuneka angasebenzi kwaye angabi nomhlwa. -
Ishishini leoli negesi
Ukwandisa ixesha lokuphila kwezinto ezivezwe kwiikhemikhali, amanzi etyuwa, okanye ukufuma okuphezulu. -
Ukwenziwa kweSemiconductor
Iindawo ezicocekileyo ze-Ultra zinciphisa ukungcoliseka kwamasuntswana kwiindawo ezibalulekileyo.
sakysteelibonelela ngemathiriyeli yentsimbi engenasici edibana ne-ASTM A967 kunye neminye imigangatho yezizwe ngezizwe, ixhasa abathengi kuwo wonke la mashishini anzima.
Imigangatho kunye neNgcaciso
Inkqubo yokupasa ilawulwa yimigangatho emininzi yehlabathi echaza ezona zenzo zilungileyo, iindlela zokuvavanya, kunye nokusetyenziswa kwemichiza. Ezi ziquka:
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I-ASTM A967: Inkcazo esemgangathweni yonyango lokunyangwa kweekhemikhali kwiindawo zensimbi ezingenasici
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I-ASTM A380: Izikhokelo zokucoca, ukuhla, kunye nokudlula
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ISO 16048: Umgangatho wokupasa wamazwe ngamazwe
Le migangatho iqinisekisa ukuba inkqubo iqhutywe ngokuchanekileyo kwaye umgangatho wokugqibela uhlangabezana neemfuno ezifunekayo zokuxhathisa ukubola.
Uxela Njani Ukuba iStainless Steel is Passivated
Intsimbi engatyiwayo egqithisiweyo ayibonakali yahluke kakhulu kwiliso lenyama. Nangona kunjalo, iimvavanyo ezikhethekileyo ezinje ngovavanyo lwe-copper sulfate, ukuba sesichengeni sokufuma okuphezulu, okanye uvavanyo lwesitshizi setyuwa kunokuqinisekisa ukuba umaleko wokwenziwa ukho kwaye uyasebenza.
Amanye amashishini afuna isiqinisekiso sezinto eziphathekayo ukuze aphumelele.sakysteelibonelela ngamaxwebhu apheleleyo kunye neengxelo zovavanyo kwiimveliso ezigqithisiweyo xa ziceliwe.
Iinzuzo zePasivation
Ukushwankathela, iingenelo eziphambili zentsimbi engenasici zibandakanya:
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Ukomelezwa kokumelana nemingxunya kunye nomhlwa
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Ubomi obude benkonzo kumacandelo
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Imiphezulu ecocekileyo necocekile ngakumbi
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Ukusebenza okuphuculweyo kwiindawo zeekhemikhali okanye kwi-saline
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Ukuthotyelwa kwemigangatho yoshishino lwehlabathi
Ngokwenza utyalo-mali kwizinto ezigqithisiweyo, amashishini anciphisa iindleko zokugcinwa, ukuphucula ukhuseleko, kunye nokwandisa ukuthembeka kwezixhobo.
Ukuqukumbela
I-Passivation yinkqubo ebalulekileyo kunyango lwensimbi engenasici, ngakumbi kwizicelo apho ukuxhathisa ukubola kunye nokucoceka kubaluleke kakhulu. Ngokususa ukungcola komhlaba kunye nokuphucula i-oxide ekhuselayo, le nkqubo ivumela insimbi engenasici ukuba isebenze ngokusemandleni ayo.
Nokuba ufuna imibhobho egqithisiweyo, izifakelo, iitanki, okanye izinto zesiko,sakysteelinokubonelela ngezisombululo ezihlangabezana neenkcukacha zakho ezichanekileyo kunye neemfuno zokuthotyelwa kweshishini. Qhagamshelana neqela lethu ukuze ufunde ngakumbi malunga neenkonzo zethu zokusetyenzwa kwentsimbi engatyiwa kunye nendlela esinokunceda ngayo ekuphuculeni iprojekthi yakho elandelayo.
Ixesha lokuposa: Jun-23-2025