Cia peb txiav mus rau qhov kev sib tw: yog tias koj xav tias tus qauv electrogalvanized gaskets yog qhov txhim khu kev qha mus ntev rau cov tshuaj tsuag ntsev, tshuaj lom neeg, los yog cov av noo siab, tej zaum koj yuav tau teeb tsa koj tus kheej rau qhov ua tsis tau zoo. Cov lus nug tiag tiag tsis yog hais txog cov txheej txheem nws tus kheej, tab sis hais txog cov kev ua tsis tiav tshwj xeeb uas tau saib xyuas kom txog thaum nws lig dhau lawm.

Kev ntseeg tsis ntseeg nyob rau hauv Micron-Thin Txheej

Kuv tau pom qhov no ntau zaus. Cov spec hu rau galvanized, thiab electrogalvanizing tau txais qhov nod vim nws pheej yig dua thiab zoo li zoo ntawm txee-zoo thiab ci. Qhov kev xav yog nws tag nrho cov zinc, yog li nws yuav tsum muaj kev tiv thaiv zoo sib xws. Nov yog thawj ntxiab. Electrogalvanizing yog qhov tseem ceeb ntawm cov txheej txheem electrolytic uas tso cov txheej nyias nyias, feem ntau nyob ib ncig ntawm 5-10 microns. Nws yog qhov zoo rau cov tsos thiab muaj kev tiv thaiv zoo tiv thaiv kom qhuav atmospheric corrosion. Tab sis nyob rau hauv qhov tseeb hnyav ib puag ncig-xav tias ntug hiav txwv ntug dej hiav txwv platforms, chemical processing vent line, or the undercarriage of machinery in de-icing azones—uas kev ntseeg siab evaporates sai. Cov txheej tsuas yog nyias dhau los ua kom muaj kev txi ntau yam anode ua ib zaug cuam tshuam.

Qhov tsis ua haujlwm tsis tshua muaj pib raws li kev xeb dav dav. Nws feem ntau yog ib qho chaw pitting nres. Kev khawb thaum lub sijhawm teeb tsa, lub micro-crack los ntawm kev tsim, lossis txawm tias tsuas yog ib qho ntug uas cov txheej txheej nyias nyias dhau los ua qhov pib taw tes. Nyob rau hauv kub-dip galvanizing, lub thicker txheej thiab hlau-zinc alloy txheej tseem tuaj yeem tiv thaiv cov hlau ntawm khawb. Nyob rau hauv electrogalvanized qhov chaw, qhov ua txhaum cai mus txog lub hauv paus hlau yuav luag tam sim ntawd. Los ntawm qhov ntawd, underfilm corrosion creeps, thiab zinc tsis tuaj yeem fij tiv thaiv thaj chaw loj vim tias tsis muaj zinc txaus. Koj xaus nrog xeb los ntshav tawm hauv qab ib txheej tseem-zoo-zoo zinc txheej, uas yog npau suav phem rau kev tshuaj xyuas.

Peb tau khiav qhov kev sim ib sab ntawm ib sab rov qab, tsis yog qhov kev tshawb fawb, tsuas yog dai cov qauv ntawm lub laj kab ze ntawm lub chaw kho dej khib nyiab. Cov qauv kub-dip tau pom cov xeb dawb (zinc oxide) tom qab 6 lub hlis tab sis tsis muaj xeb liab. Cov Electrogalvanized gasket cov qauv? Lawv pib pom cov pob liab liab ntawm lub qhov ntsia hlau thiab txiav cov npoo hauv qab 90 hnub. Thaum lub hli 8, cov xeb tau nthuav dav. Cov txheej txheej nyias nyias yog nws tus yeeb ncuab-tsis muaj qhov tuab ntxiv ntawm cov npoo tsis muaj zog.

Qhov twg Electrogalvanized yuav tuav tau (Thiab qhov twg nws yeej yuav tsis)

Nws tsis yog txhua qhov kev puas tsuaj thiab kev ntxhov siab. Muaj kev tswj hwm qhov chaw uas electrogalvanizing zoo kawg nkaus tsim nyog thiab raug nqi. Kev siv sab hauv tsev nrog qhov ruaj khov, tsis muaj av noo, lossis hauv cov rooj sib txoos uas raug kaw los ntawm huab cua (xws li hauv qee qhov hluav taws xob enclosures nrog gasketed seals). Qhov tseem ceeb yog qhov tsis muaj dej tsis tu ncua lossis cov tshuaj lom neeg ua phem. Kuv tau teev nws rau sab hauv kev sib txuas hauv tsev rau khoom txee, piv txwv li. Nws zoo.

Qhov tsis muaj qhov chaw tsis mus yog ib qho uas muaj cov tshuaj chlorides, nquag ntub-qhuav cycles, lossis acidic / alkaline fumes. Kuv nco qab txog ib qhov project uas muaj ductwork nyob rau hauv ib lub chaw ua zaub mov nrog me ntsis acidic condensate. Tus kws tshaj lij tau teev cov pav ca electrogalvanized rau tag nrho cov flanges. Lawv saib zoo meej thaum lub sij hawm installation. Hauv ib xyoos, peb tau xau ntawm ntau cov pob qij txha. Cov gaskets tau corroded mus rau lub point ntawm poob clamping quab yuam thiab sealing kev ncaj ncees. Cov khoom siv corrosion (xeb) kuj nyob hauv ntau qhov ntim, uas tuaj yeem ua rau qhov kev xav tau nce bolt load, tab sis qhov tseeb, nws tsuas yog crushed cov khoom siv gasket degraded. Qhov kev txhim kho yog kev kaw tag nrho thiab hloov nrog 316 stainless hlau gaskets - ib qho kev mob siab rau tag nrho cov nqi nruab.

Lwm qhov feem ntau tsis pom zoo yog galvanic compatibility. Pair ib Electrogalvanized gasket nrog ib tug stainless hlau flange thiab ntsia liaj qhov rooj nyob rau hauv ib tug ntub ib puag ncig, thiab koj tau tsim ib lub roj teeb. Cov zinc (anodic) yuav corrode nyiam los tiv thaiv stainless (cathodic). Qhov no tuaj yeem ua kom nrawm ntawm cov txheej txheem zinc txheej ntawm qhov ceeb toom. Hauv kev teeb tsa zoo li no, koj tuaj yeem ua tau zoo dua nrog cov pa roj carbon steel gasket thiab tso siab rau qhov tsis muaj zog, lossis zoo dua, piv rau txhua yam ntaub ntawv. Lub ntsiab lus yog, lub gasket tsis tuaj yeem xaiv hauv kev sib cais.

Tus neeg muab khoom txoj kev xav thiab cov khoom muaj tseeb

Tham nrog cov tuam txhab tsim teeb pom kev ntawm cov tswv yim txwv. Rau cov khoom ntim siab, cov qauv txheem, electrogalvanizing yog huab tais vim kev ceev, nqi, thiab kev kho kom zoo nkauj. Ib lub tuam txhab zoo li HANDAN ZITAI FREWER RAUG UA MOV., Ltd.Raws li nyob rau hauv Tuam Tshoj tus loj fastener ntau lawm hub nyob rau hauv Yongnian, Hebei, muaj peev xwm khiav loj batch ntawm standard gaskets los ntawm electroplating kab zoo. Lawv qhov chaw nyob ze ntawm txoj kev thauj loj xws li Beijing-Guangzhou Railway thiab National Highway 107 yog qhov txiaj ntsig zoo rau kev muab cov nqi-rhiab, ntim khoom thoob ntiaj teb. Koj tuaj yeem tshawb xyuas lawv cov txheej txheem muab rau ntawm lawv qhov chaw ntawm https://www.zitaifasteners.com. Rau lawv, nws yog txheej txheem txheej txheem uas ua tau raws li ib feem loj ntawm kev ua lag luam cov kev xav tau dav dav.

Txawm li cas los xij, thaum koj nkag mus rau hauv cov kev xav tau rau kev pabcuam hnyav, kev sib tham hloov. Tib cov neeg muag khoom feem ntau yuav pom zoo kom txav deb ntawm cov ntshiab electrogalvanized rau cov ntawv thov tseem ceeb. Lawv tuaj yeem hais txog kev kho mob tom qab xws li chromate hloov dua siab tshiab coatings (daj, xiav, los yog ntshiab) uas ntxiv ib txheej ntawm corrosion kuj los ntawm passivating zinc nto. Qhov no pab ncua qhov pib ntawm cov xeb dawb thiab, kom tsawg dua, xeb liab. Tab sis nws yog ncua sij hawm, tsis yog ib qho kev hloov pauv rau txheej txheej thickness los yog muaj peev xwm txi. Rau tus nqi me ntsis, zinc-flake coatings (xws li Geomet lossis Delta Protekt) muaj kev ua tau zoo tshaj plaws, vim lawv tsim cov txheej tuab dua, ntau qhov thaiv-resistant uas kuj muaj cov txhuas flakes. Tab sis tam sim no koj tab tom tawm hauv thaj av ntawm cov khoom pheej yig tshaj plaws fastener.

Qhov takeaway? Cov saw hlau yog optimized rau tus qauv. Kev qhia tshwj xeeb rau ib puag ncig hnyav txhais tau hais tias koj yuav tsum nquag de-xaiv tus qauv thiab feem ntau koom nrog kev txiav txim tshwj xeeb, uas cuam tshuam rau lub sijhawm thiab tus nqi. Nws yog kev lag luam tawm ntau qhov haujlwm tau yuam kev hauv cov nqi engineering theem.

Case in Point: Ib Retrofit uas qhia peb ntau tshaj qhov pib ua tsis tiav

Peb muaj ib txoj hauj lwm retrofit nyob rau sab nraum zoov piping nyob rau hauv ib tug petrochemical chaw. Cov pa roj carbon monoxide qub yog cov pa roj carbon monoxide, thiab lawv tau xeb rau cov flanges, yuav tsum tau ua haujlwm kom tshem tawm. Lub hauv caug-jerk cov tshuaj tiv thaiv yog hloov mus rau electrogalvanized los tiv thaiv qhov lo. Peb tau ua. Ob xyoos tom qab, thaum lub sijhawm hloov pauv, peb pom cov gaskets tshiab tsis tau daig, tab sis lawv tau corroded loj heev, nrog cov thickness poob loj. Lub sealing nto tau pitted thiab tsis sib xws.

Qhov chaw ib puag ncig yog kev tua neeg tua neeg: cov kab mob sib kis (kub thiab noo noo), ambient sulfur compounds hauv huab cua, thiab ntug hiav txwv ntsev. Cov txheej txheej electrogalvanized tau ploj mus ntev. Kev soj ntsuam tom qab kev tuag tau xaus lus tias cov zinc txheej nyias tau noj sai hauv thawj xyoo. Lub hauv paus hlau tseem tshuav tom qab ntawd corroded ntawm tus nqi nrawm, yuav yog vim qhov pib ua haujlwm galvanic thiab ib puag ncig hnyav. Qhov kev hloov kho tau ua rau peb muaj kev ntseeg tsis tseeb ntawm kev ruaj ntseg thiab ua rau muaj qhov tsis zoo ntawm qhov sib khi ntau dua li yog tias peb tau siv cov txheej tuab dua, zoo dua qub los ntawm qhov pib, lossis lwm yam khoom siv tag nrho.

Qhov kev ua tsis tiav ntawd tau thawb peb mus rau qhov qhia txog qhov kub-dip galvanized (nrog rau kev saib xyuas rau qhov ntev ntev thiab drips) lossis zinc-flake rau cov kev pabcuam hnyav li ciam teb. Rau qhov mob hnyav tiag tiag, peb hla cov coated carbon steel nkaus thiab txav mus rau aluminium lossis stainless hlau gaskets, txawm tias tus nqi dhia. Tus nqi tag nrho ntawm qhov xau los yog tsis tau npaj kaw dwarfs tus nqi ntawm cov khoom siv gasket.

Tswv yim Takeaways thiab Specification nrog Qhov Muag Qhib

Yog li, qhov kev txiav txim yog dab tsi electrogalvanized gasket durability? Nws yog ib qho xwm txheej yog, nrog hnyav caveats. Koj yuav tsum txhais hnyav heev tshwj xeeb. Puas yog qee zaus condensation, los yog nws ncaj qha tshuaj tsuag? Puas yog pH nruab nrab, lossis me ntsis tawm? Lub voj voog kub yog dab tsi? Cov ntsiab lus no tseem ceeb tshaj li daim ntawv lo dav.

Kuv txoj cai ntxhib ntawm tus ntiv tes xoo tam sim no: Yog tias ib puag ncig muaj corrosive txaus los xav tau ntau tshaj li cov xim pleev xim rau ntawm ib puag ncig steel qauv, ces electrogalvanized ib leeg ntawm qhov tseem ceeb sealing tivthaiv yog kev twv txiaj. Xav txog nws cov tshuaj pleev ib ce los yog kev tiv thaiv me me, tsis yog kev tiv thaiv kev tiv thaiv corrosion. Ib txwm cuam tshuam rau qhov tshwm sim ntawm kev ua tsis tiav. Lub gasket ua tsis tiav ntawm lub vaj huam sib luag nkag yog ib qho kev ntxhov siab. Tib lub gasket ua tsis tiav ntawm cov kab hluav taws xob siab yog qhov kev puas tsuaj.

Thaum kawg, sau ib puag ncig hauv koj qhov spec. Tsis txhob cia li sau galvanized. Qhia meej txog cov txheej txheem (electrogalvanized ib ASTM B633, Hom I, Fe / Zn 5), thiab yog tias ua tau, xav tau cov txheej txheem chromate hloov dua siab tshiab (Hom II) rau kev tiv thaiv me ntsis ntxiv. Los yog, zoo dua tsis tau, txhais cov sij hawm ntsuas ntsev ntsev uas yuav tsum tau ua tsis tiav (piv txwv li, ASTM B117). 96 teev tsis muaj xeb liab yog qhov txawv ntawm 500 teev. Qhov no ua rau muaj kev sib tham ntau dua nrog koj tus neeg muag khoom, txawm tias nws yog cov chaw tsim khoom loj xws li Handan Zitai tau hais los saum toj no lossis tus neeg muag khoom hauv zos. Nws txav kev sib tham los ntawm cov khoom muag mus rau cov khoom siv hluav taws xob, uas yog qhov zoo li lub gasket hauv ib puag ncig hnyav yuav tsum yog.