Ukuqina kwe-gasket ene-electrogalvanized kwindawo ezirhabaxa? 

Masiyeke ukugxotha: ukuba ucinga ukuba i-gaskets ye-electrogalvanized standard iyisilungiso esithembekileyo sexesha elide lokutshiza ityuwa, ukuvezwa kweekhemikhali, okanye ukufuma okuphezulu, mhlawumbi uzibekela ukusilela kwintsimi ebiza kakhulu. Umbuzo wokwenyani awukho malunga nengubo ngokwayo, kodwa malunga neendlela ezithile zokungaphumeleli eziye zinganakwa de kube kusemva kwexesha.

Ukuzithemba Okungafanelekanga kwiMicron-Thin Layer

Ndikubonile oku amaxesha amaninzi. I-spec ibiza i-galvanized, kwaye i-electrogalvanizing ifumana i-nod kuba inexabiso eliphantsi kwaye ibonakala ilungile kwi-shelf-intle kwaye iyakhazimula. Ingqikelelo kukuba yonke i-zinc, ke kufuneka inikeze ukhuseleko olufanayo. Lo ngumgibe wokuqala. I-Electrogalvanizing yinkqubo ye-electrolytic ebeka umcephe obhityileyo, olinganayo, ojikeleze i-5-10 microns. Ilungile kwinkangeleko kwaye inikezela ngokhuseleko olusemgangathweni kwi-corrosion eyomileyo yomoya. Kodwa enyanisweni imekobume enzima-cinga amaqonga aselunxwemeni aselunxwemeni, imigca yokukhupha iikhemikhali, okanye ukuthwala oomatshini abaphantsi kweendawo zokucima i-icing-ukuba ukuzithemba kuphuma ngokukhawuleza. Umaleko ubhitye kakhulu ukuba ungabonelela ngesenzo se-anode esibambekayo xa sele sichaphazelekile.

Ukusilela akufane kuqale njengokurusa okuqhelekileyo. Kudla ngokuba luhlaselo lwepitting yendawo. Umkrwelo ngexesha lofakelo, i-micro-crack ukusuka ekubunjweni, okanye kwanomphetho nje apho isambatho sincinci ngokwendalo siba yindawo yokuqalisa. Kwi-galvanizing ye-hot-dip, i-coating engqindilili kunye ne-iron-zinc alloy layers isenokuyikhusela intsimbi ekuqaleni. Kwiindawo ze-electrogalvanized, ukuphulwa kufikelela kwisiseko sesinyithi ngokukhawuleza. Ukusuka apho, i-underfilm corrosion creeps, kwaye i-zinc ayikwazi ukukhusela ngokubingelela indawo enkulu kuba akukho bunzima baneleyo be-zinc. Uphela uphuma umhlwa phantsi kocwecwe lwezinc olukhangeleka luqinile, nto leyo ebangela ukuba uhlolwe.

Siye saqhuba uvavanyo lwecala necala emva kweminyaka, hayi nezo zenzululwazi, sijinga nje iisampulu kucingo olukufutshane nendawo yokucoca amanzi amdaka. Iisampulu ezishushu-dip zibonisa umhlwa omhlophe (i-zinc oxide) emva kweenyanga ezi-6 kodwa akukho mhlwa obomvu. I i-elecket ye-elektroge iisampulu? Baye baqala ukubonisa amabala omhlwa abomvu kwimingxuma yeebholiti kwaye banqumle imiphetho phantsi kweentsuku ezingama-90. Ngenyanga yesi-8, umhlwa wawusele uxhaphakile. Olo tyaba lubhityileyo, olufanayo lutshaba lwayo—akukho ngqindilili ongezelelweyo kwincam esengozini.

Apho i-Electrogalvanized inokuthi ibambe khona (kwaye apho ingayi kuba khona ngokupheleleyo)

Asiyiyo yonke intshabalalo kunye nobumnyama. Kukho iindawo ezilawulwayo apho i-electrogalvanizing yanele ngokugqibeleleyo kwaye ineendleko. Usetyenziso lwangaphakathi oluzinzile, ukufuma okuphantsi, okanye kwiindibano ezitywiniweyo ukusuka kwiatmosfera (njengangaphakathi kwezivalo zombane ezinezitywina ezifakwe gasket). Into ephambili kukungabikho komswakama oqhubekayo okanye ii-agent zekhemikhali ezinobundlobongela. Ndiyichazile kuqhagamshelo lwesakhiwo sangaphakathi kwishelufu yesitora, umzekelo. Ilungile.

Iindawo ekungahanjwa kuzo zizo naziphina iikloridi, imijikelo ehlala imanzi-yokoma, okanye imisi eneasidi/yealkaline. Ndikhumbula iprojekthi ebandakanya i-ductwork kwiplanti yokulungisa ukutya ene-condensate eneasidi epholileyo. Injineli ichaze iigaskets ezisicaba ezenziwe ngombane kuzo zonke iiflange. Bajonge ngokugqibeleleyo ngexesha lofakelo. Kwisithuba sonyaka, siye savuza kumalungu amaninzi. Iigaskets ziye zonakaliswa ukusa kwinqanaba lokuphulukana namandla okubamba kunye nokutywina ingqibelelo. Imveliso ye-corrosion (i-rust) nayo ithathe umthamo othe kratya, onokuthi ukhulise umthwalo webholithi ngokwethiyori, kodwa eneneni, ivele yatyumza i-gasket eyonakeleyo. Ukulungiswa kwakuvaliwe ngokupheleleyo kunye nokutshintshwa kunye ne-316 i-gaskets yensimbi engenasici-isifundo esibuhlungu kwiindleko ezifakiweyo zizonke.

Enye into esoloko ingahoywa kukuhambelana kwegalvanic. Dibanisa i i-elecket ye-elektroge ngeflange yensimbi engenasici kunye nebholiti kwindawo emanzi, kwaye udale ibhetri. I-zinc (i-anodic) iya kutshabalalisa ngokufanelekileyo ukukhusela i-stainless (cathodic). Oku kunokukhawulezisa ukusetyenziswa kwaloo maleko e-zinc encinci ngesantya esothusayo. Kulungiselelo olunjalo, unokuba ngcono nge-carbon steel gasket kwaye uthembele kwi-passivation ye-stainless, okanye ngcono, ukuhambelana nazo zonke izinto. Ingongoma kukuba, i-gasket ayikwazi ukukhethwa yodwa.

Imbono yoMboneleli kunye neeNqobo zeMpahla

Ukuthetha nabavelisi kukhanyisa imiqobo ebonakalayo. Kwivolumu ephezulu, iindawo eziqhelekileyo, i-electrogalvanizing yinkosi ngenxa yesantya, indleko, kunye nokugqitywa kwezithambiso. Inkampani efana I-Sunnian Zitai Festener Fishaner Comment Com., esekwe kwi-hub enkulu yokuvelisa i-fastener yase-China e-Yongnian, e-Hebei, inokuqhuba iibhetshi ezinkulu ze-gaskets eziqhelekileyo ngokusebenzisa imigca ye-electroplating ngokufanelekileyo. Indawo ezikuyo kufutshane neendlela ezinkulu zezothutho ezifana neBeijing-Guangzhou Railway kunye neNational Highway 107 luncedo lolungiselelo lokubonelela ngezi zixhobo zingabizi kakhulu, ezinomthamo ophezulu kwihlabathi jikelele. Ungajonga iminikelo yabo eqhelekileyo kwindawo yabo kuyo https //wwww.ziitasteners.com. Kubo, yinkqubo eqhelekileyo ehlangabezana nenxalenye enkulu yeemfuno eziqhelekileyo zemarike.

Nangona kunjalo, xa uqhubela phantsi kwiimfuno zobuchwepheshe zenkonzo enzima, incoko iyatshintsha. Ababoneleli abafanayo baya kucebisa ukuba bahambe kude ne-electrogalvanized ecocekileyo yezicelo ezibalulekileyo. Basenokucebisa unyango lwasemva olufana neengubo zokuguqulwa kwechromate (etyheli, eluhlaza okwesibhakabhaka, okanye ecacileyo) eyongeza umaleko wokumelana nomhlwa ngokudlula umphezulu we-zinc. Oku kunceda ukulibazisa ukuqala kwe-rust emhlophe kwaye, kwinqanaba elingaphantsi, i-rust ebomvu. Kodwa kukulibaziseka, ayilulo utshintsho olusisiseko kubukhulu bengubo okanye amandla okubingelela. Ngexabiso elithe kratya, i-zinc-flake coatings (efana neGeomet okanye iDelta Protekt) ibonelela ngokusebenza okuphezulu kakhulu, njengoko zisakha umaleko otyebileyo, okwaziyo ukumelana nemiqobo ekwaqulethe iiflakes zealuminiyam. Kodwa ngoku ushiya indawo yeyona nto ikhawulezayo yokuthengisa izinto.

I-takeway? Ikhonkco lokubonelela lilungiselelwe umgangatho. Ukukhankanya iimeko ezingqongileyo ezirhabaxa kuthetha ukuba kufuneka ungakhethi umgangatho kwaye usoloko uzibandakanya kucwangco olukhethekileyo, nto leyo echaphazela ixesha kunye neendleko. Lurhwebo-off iiprojekthi ezininzi zingalunganga kwinqanaba lobunjineli bexabiso.

I-Case in Point: I-Retrofit Eye Yasifundisa Ngakumbi kunokusilela kokuqala

Sasinomsebenzi wokubuyisela kwimibhobho yangaphandle kwindawo yepetrochemical. Iigaskets zantlandlolo zaziyintsimbi yekhabhoni engenanto, kwaye zaye zaruswa ziqinileyo kwiiflange, zifuna umsebenzi wetotshi ukususa. Ukusabela kwamadolo kukuphucula kwi-electrogalvanized ukukhusela oko kuncamathela. Senze. Kwiminyaka emibini kamva, ngexesha loguquko, safumanisa ukuba ii-gaskets ezintsha zingabambekanga, kodwa zaye zonakaliswa kakhulu, kunye nelahleko enkulu. Imiphezulu yokutywina yayinemingxuma kwaye ingalingani.

Imekobume yayiyi-combo ebulalayo: imikhondo yomphunga (ubushushu kunye nokufuma), iikhompawundi zesulfure ezisemoyeni, kunye netyuwa yonxweme. I-electrogalvanized coating yayiphelile. Uhlalutyo lwe-post-mortem lugqibe ukuba i-zinc layer idliwe ngokukhawuleza kunyaka wokuqala. Isiseko sentsimbi esishiyekileyo emva koko sadliswa ngesantya esikhawulezayo, mhlawumbi ngenxa yomsebenzi wokuqala we-galvanic kunye nokusingqongileyo okunobundlobongela. Uhlaziyo lusinike uluvo olungeyonyani lokhuseleko kwaye lwakhokelela kwindawo yokutywina ethobeke ngakumbi kunokuba besisebenzise isambatho esityebileyo, esomelela ngakumbi kwasekuqaleni, okanye imathiriyeli eyahlukileyo ngokupheleleyo.

Oko kusilela kusityhalele ekuchazeni idiphu eshushu (ngokhathalelo olufanelekileyo lonyamezelo lwedimensional kunye nedriphu) okanye i-zinc-flake yeenkonzo ezirhabaxa zomda. Kwiimeko ezinzima ngokwenene, siye satsiba intsimbi egqunywe ngekhabhoni ngokupheleleyo saza safudukela kwi-aluminiyam okanye kwiigasthi zentsimbi engenakutyiwa, ngaphandle kokutsiba kweendleko. Ixabiso lilonke lokuvuza okanye ukuvalwa okungacwangciswanga kunciphisa ixabiso lemathiriyeli ye-gasket.

Izinto eziThathayo eziSebenzayo kunye nokuchaza ngaMahlo avuliweyo

Ke, sithini isigqibo electrogalvanized gasket ukuqina? Kungu-ewe onemiqathango, kunye nemiqolomba enzima. Kufuneka uchaze rhabaxa ngokuthe ngqo. Ngaba kukujiya ngamaxesha athile, okanye kukutshiza ngokuthe ngqo? Ngaba i-pH ingathathi hlangothi, okanye icime kancinci? Yintoni umjikelo wobushushu? Ezi nkcukacha zibaluleke ngaphezu kweleyibhile ebanzi.

Umgaqo wam orhabaxa wobhontsi ngoku: Ukuba okusingqongileyo kunokonakala ngokwaneleyo ukuba kufuneke ngaphezu komsebenzi wepeyinti kwizakhiwo zentsimbi ezijikelezileyo, ke i-electrogalvanized yodwa kwindawo yokutywina ebalulekileyo kukungcakaza. Yithathele ingqalelo njengento yokuhombisa okanye ethambileyo ekhuselayo, hayi inkqubo eyomeleleyo yokuthintela umhlwa. Soloko ubala imiphumo yokungaphumeleli. Ukungaphumeleli kwe-gasket kwiphaneli yokufikelela kuyacaphukisa. I-gasket efanayo iyasilela kwi-high-pressure line fuel yintlekele.

Ekugqibeleni, bhala okusingqongileyo kwi-spec yakho. Ungabhali nje ukhanyiswe. Cacisa inkqubo (i-electrogalvanized per ASTM B633, Type I, Fe / Zn 5), kwaye ukuba kunokwenzeka, ifuna i-chromate conversion coating (Udidi II) ukwenzela ukuchasana okungaphezulu. Okanye, ngcono noko, chaza iiyure zovavanyo lokutshiza ityuwa ezifunekayo ukusilela (umzekelo, i-ASTM B117). Iiyure ezingama-96 ngaphandle komhlwa obomvu zihluke kakhulu kwiiyure ezingama-500. Oku kunyanzelisa incoko eyongezelelekileyo kunye nomthengisi wakho, nokuba ngaba ngumvelisi omkhulu onjengoHandan Zitai okhankanywe ngasentla okanye umsasazi wasekhaya. Isusa ingxoxo ukusuka kwimveliso ukuya kwicandelo lobunjineli, nto leyo kanye kanye igasket kwindawo enzima ekufuneka ibe yiyo.