Ewe, intsimbi enezinki iya kuba nomhlwa ekugqibeleni. Nangona kunjalo, umgca wexesha uhluka ngokumangalisayo ukusuka kwiminyaka emfutshane ye-10 ukuya kwiminyaka engaphezu kwama-200. Lo mahluko mkhulu uxhomekeke ngokungqongqo kwizinto eziguquguqukayo zangaphandle. Kumaqela anamhlanje okuthenga kunye nobunjineli, ukuvavanya ezi zinto zigqunyiweyo kufuna utshintsho kwimbono. Kufuneka uqaphele ukuba ayisiwo umbuzo wokuba isinyithi siya kuthotywa, kodwa kanye nini kwaye phantsi kweziphi iimeko ezithile eziya kusilela.
Ukuqikelela eli xesha lokuphila ngokuchanekileyo kuthintela ubuthathaka obungalindelekanga besakhiwo. Kwakhona kuphelisa umthwalo omkhulu wokutshintsha ezantsi kumgca. Esi sikhokelo sibanzi sibonelela ngesakhelo esisekwe kubungqina bokuqonda amaxesha achanekileyo erusi. Siza kukunceda uchonge iindawo ezibalulekileyo zokusilela kokusingqongileyo kwaye uphonononge ikhemistri ekhethekileyo emva kweengubo ze-zinc. Uya kufunda kwakhona ukuba ungaziphepha njani iimpazamo zofakelo oluxabisa imali eninzi njenge-galvanic corrosion ukuze wandise ubomi obusebenzayo bemathiriyeli.
Izinto eziphambili zokuThatha
I-Lifespan Spectrum: Insimbi ene-galvanized ingahlala ukuya kwiminyaka engama-211 kwindawo eyomileyo, yasemaphandleni, kodwa inokunciphisa ngaphantsi kweminyaka eyi-10 kwi-100% yomswakama okanye i-high-chloride iimeko zaselwandle.
I-Chemistry yoKhuseleko: Izinto eziphathekayo zithembele 'kwi-cathodic ukukhusela' kunye ne-self-self-healing zinc carbonate layer, esebenza njengomqobo wokubingelela kwintsimbi engaphantsi.
I-Red-Line Environments: I-galvanization iya kusilela ngokuqikelelwa kwangaphambili ukuba ifakwe ngokupheleleyo emanzini anetyuwa, evezwe kumaqondo obushushu aqhubekayo ngaphezulu kwe-392°F (200°C), okanye ibekwe ekudibaneni ngqo neentsimbi ezingafaniyo ezifana ne-aluminiyam.
Umgangatho wokuthengwa kwempahla: I-galvanization ye-Hot-dip kufuneka ihambelane nemigangatho yobukhulu be-ASTM A123 ukuze kuqinisekiswe ubomi obude obusisiseko bokusetyenziswa kwezorhwebo.
I-Core Mechanism: Indlela intsimbi yeGalvanized ilibazisa ngayo umhlwa
Ngaphaya kwee Coatings zoMphezulu
Iinjineli ezininzi ziphosakele ukwenza i-galvanization ngengubo elula efana nepeyinti. Intsimbi yeGalvanized isebenza ngokwahlukileyo. Inkqubo ye-galvanization yediphu eshushu intywilisela intsimbi ekrwada kwibhafu yezinki etyhidiweyo. Le bhafu ifikelela kumaqondo obushushu aphakathi kwama-440°C kunye nama-460°C. Kulo bushushu obukhulu, i-zinc ifumana i-metallurgical reaction kunye nentsimbi. Zidibanisa ukuze zenze umaleko we-alloy odityanisiweyo ngokuqinileyo. Oku kudala ibhondi yeekhemikhali kunokuba i-adhesion mechanical adhesion.
Ukukhuselwa kweCathodic (i-Anode yedini)
Ubukrelekrele bokwenyani balo mbandela buxhomekeke ekukhuselweni kwe-cathodic. I-Zinc ihlala isebenza kakhulu kwi-oxygen kunye nokufuma. Ngenxa yoku kuphinda kusebenze, umaleko we-zinc oxidizes kuqala. Isebenza ngamabomu njenge-anode yombingelelo. I-zinc inikezela ngee-electron zayo ukugcina i-alloy ye-iron-carbon alloy. Nokuba imozulu embi ihlasela ngamandla intsimbi, isiseko sentsimbi sihlala sicocekile logama nje i-zinc layer iqhubeka.
Isithintelo seZinc Carbonate
Ulandelelwano oluthile lokusabela kweekhemikhali ludala esona sithintelo somhlwa. Xa i-zinc ecocekileyo isabela nge-oksijeni ye-atmospheric, yenza i-zinc oxide. Xa le oxide idibana nokufuma, iba yizinc hydroxide. Ekugqibeleni, le hydroxide idibana nekharbon diokside esemoyeni. Le mpendulo yokugqibela yenza i-zinc carbonate. I-Zinc carbonate yenza ipatina enganyibilikiyo, emnyama-grey kumphezulu. Lo maleko womelele ngokwasemzimbeni uthintela ioksijini eyongezelelekileyo nokungena kwamanzi.
I'Ukuziphilisa' kwePropati
Iingozi zenzeka ngexesha lothutho kunye nokufakwa. Ngethamsanqa, imikrwelo emincinci ukuya a ishidi lentsimbi ekhandiweyo aliyi kuhlwa ngoko nangoko. I-coating inepropati ekhethekileyo yokuziphilisa. Xa isixhobo esibukhali siveza intsimbi engenanto, i-zinc ejikelezileyo isabela nge-electrochemically. I-zinc ions iyafuduka ukuze ivale izithuba ezincinci. Bagubungela ngokufanelekileyo intsimbi eveziweyo kwaye baphinde babuyisele umqobo wokukhusela ngaphandle kokungenelela ngesandla.
Ukujongwa kweNyaniso yokusiNgqongileyo: INkcukacha yeLifespan kunye ne-Rust Triggers
Awunakuqikelela ubude bezinto eziphathekayo ngokuchanekileyo ngaphandle kokuvavanya indawo ethile yokuthunyelwa. Imimoya eyahlukeneyo idla umaleko we-zinc okhuselayo ngamaxabiso ahluke kakhulu.
I-5-Tier Environment Matrix
Imigangatho yoshishino idla ngokudibanisa imingcipheko yokusingqongileyo ibe ngamanqanaba ahlukeneyo. Sinokuhlola ubude bobomi obulindelekileyo ngokusekelwe ngokungqongqo kwezi meko zangaphandle.
Uhlobo lokusiNgqongileyo |
Ubomi obulindelekileyo |
Izinto ezibangela umhlwa kunye neempawu |
Emaphandleni / edolophini |
75 ukuya 200+ iminyaka |
Ukufuma kuhlala ngaphantsi kwe-60%. Ubuncinci besulfure kunye nekloridi amanqanaba. Iimeko ezifanelekileyo zokugcinwa kwe-zinc ixesha elide. |
Imizi-mveliso |
Iminyaka engama-40 ukuya kwengama-80 |
I-airborne sulfur dioxide (SO2) evela kwizinto ezikhutshwayo ezinzima zehlisa amanqanaba e-pH yendawo. Umoya omuncu udla ngokukhawuleza i-zinc layer. |
Ubushushu baseLwandle |
Iminyaka engama-30 ukuya kwengama-60 |
Ukuvela rhoqo kwenkungu engaselunxwemeni kunye nokuba sesichengeni setyuwa ephakathi. Ityuwa iphazamisa i-zinc carbonate patina ekhuselayo. |
Tropical Marine |
I-10 ukuya kwi-30 iminyaka |
Ukufuma okuqhubekayo ngaphezu kwe-60% kudibanisa kunye ne-sodium chloride enzima yomoya. Umngcipheko omkhulu wokurhwaphiliza. |
Ishishini elinzima |
Ngaphantsi kweminyaka eyi-15 |
Ukuvezwa ngokuthe ngqo kwiikhemikhali ezidla kakhulu, iasidi egqithisileyo, okanye iindawo ezivalekileyo zokufuma okuphakamileyo njengokuhlamba iimoto zorhwebo. |
Iiguquguquko zomhlaba kunye nokuNgcwaba
Ukungcwaba izithuba zegalvanized ngqo emhlabeni kwazisa izinto eziguquguqukayo ezinzima. Kwimihlaba ene-acidic kakhulu okanye engasebenzi kakuhle, ixesha lokuphila liyehla kakhulu kwiminyaka eyi-35-50. Ukufuma rhoqo kuthintela ukubunjwa kwe-zinc carbonate layer ebalulekileyo. Ngaphaya koko, imisinga yombane elahlekileyo emhlabeni inokukhawulezisa ukuwohloka. Ukuba iprojekthi yakho idinga ukungcwatywa kwimihlaba enobudlova, kufuneka ucacise i-epoxy eyongezelelweyo okanye iingubo ze-bituminous.
Iqondo lobushushu
Ubushushu obugqithiseleyo buzisa olunye ucelomngeni olukhulu. Iingubo ze-Zinc zithobisa ngokukhawuleza phantsi kokuvezwa ngokuqhubekayo kumaqondo okushisa ngaphezu kwe-392 ° F (200 ° C). Ngaphezulu kwalo mqobo, iileya ze-alloy ziqala ukukhupha kwisiseko sentsimbi. Ukuguquguquka okugqithisileyo kobushushu kukwabangela ukwanda ngokukhawuleza kwe-thermal kunye nokucutheka. Le ntshukumo yomzimba igxininisa kakhulu isambatho esingaguqukiyo, sibangela ukuba siqhekeke kwaye siphephe.
Imingcipheko yosetyenziso kunye nokuFakelo: Kutheni uFakelo lweMisebenzi lungaphumeleli kwangethuba
Nokuba izinto ezenziwe ngokugqibeleleyo ziya kusilela ukuba zifakwe ngokuchanekileyo. Amaqela obunjineli kufuneka aphephe imigibe ethile yoyilo ukuthintela umhlwa ongekafiki ixesha.
IGalvanic Corrosion (Ingozi yeMetal Engafaniyo)
I-Galvanic corrosion ivelele njengomgibe wobunjineli obalulekileyo. Xa ubeka iintsimbi ezimbini ezingafaniyo ngokudibana ngokuthe ngqo kwindawo efumileyo, i-electrochemical reaction reaction ibangela. Umzekelo, ukubolitha iifreyimu zepaneli ye-aluminiyam yelanga ngokuthe ngqo kwizinyusi zomhlaba ezenziwe ngamagala kuqinisekisa ukusilela okukhawulezayo. I-zinc isebenza njenge-anode kwi-cathode ye-aluminium, ukuchithwa ngokukhawuleza.
Eyona ndlela ilungileyo yokuSebenza: Soloko ugunyazisa iipads zokuzahlula ezingezizo ezentsimbi. Sebenzisa irabha okanye izikhewu zeplastiki ezinobunzima phakathi kweentsimbi ezahlukeneyo.
Impazamo eqhelekileyo: Ukusebenzisa iziqhoboshi zentsimbi engenasici kwiipleyiti ezenziwe ngamagalvanized ngaphandle kwewasha yenayiloni ekhuselayo.
Ukudityaniswa kwamanzi kunye neMoss Micro-climate
Uyilo lwesakhiwo kufuneka lubeke phambili ukuhanjiswa kwamanzi. Ukuba imijelo ethe tyaba ivumela amanzi emvula aneasidi ukuba adibane, i-zinc layer iya kuhlala ilwa namanzi amileyo. Isithintelo esibalulekileyo se-zinc carbonate sifuna imijikelo yokumanzisa kunye nokomisa ukuze uhlale uzinzile. Ukongeza, ukudibanisa amanzi kukhuthaza ubulembu obugcina ukufuma kunye ne-lichen. Oku kukhula kwebhayoloji kukhupha iiasidi eziphilayo ezithambileyo. Ngokuhamba kwexesha, ezi micro-climates ezineasidi ziya kutshabalalisa kwangaphambi kwexesha umqobo wokukhusela.
Ukungahambelani kweMichiza
Iindawo zokwakha zizaliswe ngezinto ezinobungozi zealkaline. Ukuvezwa kwisamente emanzi yasePortland ihlasela ngokukhawuleza i-zinc. Ngokufanayo, i-plaster equkethe amanqanaba aphezulu e-chlorides kunye ne-sulfates iyonakalisa i-zinc layer ngexesha lokunyanga. Kufuneka uwakhusele ngononophelo amacandelo olwakhiwo olwenziwe ngamazinki kudaka olutshiziweyo okanye ikhonkrithi emanzi ngexesha lomsebenzi okufutshane wokwakha.
IiNdlela ezizezinye zeMathiriyeli: Kuza kuchazwa nini iStainless okanye iAluminiyam endaweni yoko
Ukuthengwa kobuchwephesha kufuna ukwazi ixesha lokuhamba kude nemathiriyeli ethile. Igalvanization ijongana neemfuno ezininzi zorhwebo, kodwa ijongene nemida engqongqo.
Xa intsimbi yeGalvanized iluKhetho olungalunganga
Iindawo ezithile zomgca obomvu zigunyazisa ezinye iindlela zangoku.
Izicelo zaseLwandle eziZinc ngokupheleleyo: Ukuhamba kwamanzi etyuwa ngokuqhubekayo kuhlamba i-zinc layer ngaphambi kokuba i-zinc carbonate patina ebalulekileyo ikwazi ukuzinza. Kwiindonga zaselwandle, iirempu zamaphenyane, okanye iipayiloni eziphantsi kwamanzi, kufuneka uchaze i-316L yeNsimbi eNgangenasici endaweni yoko.
Ukusetyenzwa kobushushu obugqithisileyo: Iindawo zokwenziwa kwemveliso zihlala zigqitha kuma-200°C ngokuqhubekayo. Izixhobo zesithando somlilo okanye i-heavy-duty exhaust stacks ngokukhawuleza zitshabalalisa iingubo ze-zinc. Kwezi meko, kufuneka kusetyenziswe iialloyi ezinobushushu obuphezulu okanye i-aluminiyam ekhethekileyo ephathwa ngobushushu.
Iindleko vs. URhwebelwano lobunzima
Kufuneka ulungelelanise iimfuno zesakhiwo ngokuchasene nemiqobo yohlahlo lwabiwo-mali. Intsimbi eyenziwe ngegalvanized inika amandla aphezulu kakhulu okuqina ngexabiso eliphantsi kakhulu kune-aluminiyam yolwakhiwo. Oku kuyenza ibe lolona khetho lufanelekileyo lokunyuswa komhlaba onzima, iindlela zokugada zendlela, kunye nesikafula esikhulu. Nangona kunjalo, intsimbi ixinene kwaye inzima. Kuphahla olunovakalelo lwemitha yelanga okanye iifreyimu zothutho ezikhaphukhaphu, iinxalenye zegalvan zihlala zigqithisa imida yokuthwala umthwalo. Kwezo meko, i-aluminium ekhutshiweyo iba luphuculo oluyimfuneko ngaphandle kwethegi ephezulu yexabiso.
Ukulungiswa kunye nokuPhathwa: Ukwandiswa kweLifecycle
Ulawulo olululo lomjikelo wobomi luqala xa izixhobo zifika kwindawo yakho yomsebenzi. Ukuphatha ngokungakhathali kunciphisa amashumi eminyaka kubomi obulindelekileyo.
Ukuphatha iMathiriyeli ekrwada
Ukugcinwa ngokufanelekileyo kwe Ikhoyili yentsimbi efakwe igalvanized ibaluleke kakhulu phambi kokuba umveliso uqalise. Amaphepha apakishwe ngokusondeleyo okanye iikhoyili azinawo ngokwaneleyo ukugeleza komoya. Ukuba imvula okanye i-condensation ingena kwezi mfumba zipakishwe ngokuqinileyo, ukufuma okuvalelekileyo kubangela intlekele. Ngaphandle kwe-carbon dioxide ehamba ngokukhululekileyo, isinyithi asikwazi ukwenza i-zinc carbonate. Endaweni yoko, yenza i-zinc hydroxide, eyaziwa njenge 'rust emhlophe'. Ngalo lonke ixesha gcina izixhobo ezingafakwanga ngaphakathi okanye phantsi kweetarp eziphefumlayo, ezinyusiweyo.
I-SOP yoLungiso lomonakalo omncinci
Iingcali zesiza zihlala zikrwela izixhobo ngexesha lofakelo olunzima. Udinga inkqubo engqongqo yokusebenza esemgangathweni (SOP) ukusingatha lo monakalo.
Vavanya Umonakalo: Jonga ukuba umkrwelo uveza intsimbi engenanto, emenyezelayo okanye ukuba umhlwa sele uqalisile ukwenzaka.
ULungiselelo oluthambileyo: Musa ukusebenzisa uboya bentsimbi, iibrashi zocingo, okanye ukuhlamba uxinzelelo lwe-abrasive ukucoca indawo. I-Abrasives iya kutshabalalisa umaleko we-zinc osempilweni. Sebenzisa isinyibilikisi esithambileyo ukususa igrisi kunye nobumdaka.
Ungathathi hlangothi: Ukwenzela iindawo zerusi ezihlala kwindawo ethile, yiphathe ngesiguquli sorhwebo. Oku kunciphisa i-oxidation esebenzayo.
Isitywina kunye nokukhusela: Faka i-primer enzima, esemgangathweni we-zinc-rich. Qinisekisa ukuba i-primer iqulethe ubuncinane i-92% yothuli lwezinc ubunzima kwifilimu eyomileyo ukuphindaphinda ukukhuselwa kwe-cathodic.
IProthokholi yokuLondolozwa kweMimiselo
Ukuphila ixesha elide kwiindawo ezinzima kufuna ukulungiswa okusebenzayo. Ukuwa kwemizi-mveliso, ngakumbi iinxalenye ze-SO2, zihlala phezu kwemiphezulu ngokuhamba kwexesha. Ukuhlanjwa ngamaxesha athile ngezicoci ezithambileyo nezingaqholiyo kususa ngokufanelekileyo ezi zingcolisi zonakalisayo. Ishedyuli yokucoca kabini ngonyaka igcina i-zinc carbonate layer kwaye ikhusela i-pitting yendawo. Ngalo lonke ixesha hlamba ngokucokisekileyo ngamanzi amatsha ukususa nayiphi na intsalela yesicoci.
Ukuqukumbela
Isinyithi esine-galvanized sihlala sixabisa kakhulu kwaye sinokwethenjelwa ngokwesakhiwo amashumi eminyaka. Nangona kunjalo, oku kuthembeka kubambe kuyinyani ukuba indawo yokuthunyelwa ihlala ngaphakathi kwemida eyaziwayo yeekhemikhali, i-thermal, kunye nokufuma. Ukuqaphela ubuthathaka obuthile be-zinc carbonate layer ihlukanisa ngempumelelo, iiprojekthi zekhulu leminyaka ukusuka kwiintsilelo ezibizayo, iminyaka elishumi.
Njengomthengi okanye injineli yeprojekthi, amanyathelo akho alandelayo kufuneka asebenze. Phicotha indawo oyicetyiweyo yokufakela ngokukodwa iikloridi ezisemoyeni, amanqanaba e-SO2, kunye nokufuma okuqhubekayo okungqongileyo. Vavanya iiplani zakho zolwakhiwo ukuqinisekisa ukuba uyilo lwe-akhawunti yeschematics yokwahlulwa kwentsimbi eyahlukileyo ngaphambi kokuba ugqibezele izinto zakho eziphathekayo. Ngokuhlonipha imida yekhemikhali ye-zinc, ungasebenzisa ngokuzithemba le mathiriyeli yomelele kwaye ukhusele imbuyekezo engakholelekiyo kutyalo-mali lwakho lolwakhiwo.
FAQ
Umbuzo: Ngaba intsimbi yesinyithi irusila ngokukhawuleza kunentsimbi engenasici?
IMPENDULO: Ewe, kwindawo ezonakalisa kakhulu njengamanzi anetyuwa, intsimbi engatyiwayo yodlula kakhulu imathiriyeli eyenziwe ngamagala. Intsimbi engatyiwayo ixhomekeke kumaleko e-chromium oxide afakelweyo ukuze akhuseleke. Lo maleko awupheli ngokuhamba kwexesha. Ngokwahlukileyo, i-galvanization isebenzisa i-zinc layer yombingelelo. Nje ukuba indawo engqongileyo isebenzise ngokupheleleyo le zinc, intsimbi engaphantsi iya kukhupha ngokukhawuleza i-oxidize kunye nomhlwa.
Umbuzo: Ngaba unokupeyinta phezu kwentsimbi egsiweyo?
A: Ungaze upeyinte ngokuthe ngqo phezu komhlwa okhoyo. Umphezulu kufuneka uqale unyango olufanelekileyo. Kufuneka ufake isiguquli sokurhweba sokurhweba ukuze unciphise i-oxidation. Emva kwesi sinyathelo, sebenzisa i-primer-standard zinc-rich primer. Ukuba weqa la manyathelo, umhlwa ongaphantsi uya kubangela ukuba ipeyinti entsha iqhume kwaye idibanise.
Q: Yintoni 'umhlwa omhlophe' kwintsimbi eyenziwe ngamagalvanized?
A: Umhlwa omhlophe ngumgubo owenziweyo omhlophe, obizwa ngekhemikhali njengezinc hydroxide. Kwenzeka xa imathiriyeli ezisandula ukugalelwa zijongene nokutyhileka kokufuma ngaphandle kwekharbon diokside eyaneleyo. Ngaphandle kwe-carbon dioxide, i-zinc carbonate patina ekhuselayo ayikwazi ukwenza. Lo mbandela uyenzeka rhoqo ngexesha lokugcinwa ngokungafanelekanga kweendawo ezipakishwe ngokusondeleyo okanye iikhoyili apho amanzi avaleleka khona.
