Siab zog dub gasket durability? 

Thaum koj hnov ​​lub zog siab dub gasket, dab tsi los rau hauv siab? Ntau tus tam sim ntawd xav txog cov xim - uas matte lossis qee zaum glossy dub tiav - thiab sib npaug nrog kev ua tau zoo dua. Tab sis qhov ntawd yog thawj ntxiab. Cov xim tsuas yog kev kho saum npoo, feem ntau yog phosphate lossis oxide txheej, qee zaum muaj elastomeric txheej rau cov ntsaws ruaj ruaj. Cov lus nug tiag durability tsis yog hais txog cov xim tuav; nws yog hais txog qhov siab zog cov khoom tseem ceeb, ua ke nrog qhov chaw, tuaj yeem tiv taus qhov chaw tshwj xeeb uas nws tau muab pov rau hauv. Kuv tau pom ntau qhov haujlwm uas ib pab pawg tau teev cov roj hmab dub rau lub siab flange, lulled los ntawm qhov zoo saib, tsuas yog ua rau lub ntsej muag tsis ua haujlwm ntxov vim lawv tsom mus rau qhov zoo nkauj dua li cov khoom siv sib dhos thiab kev pabcuam.

Lub Core Tom Qab Xim

Cia peb rub nws rov qab. Lub zog siab feem ntau yog hais txog cov tub ntxhais hlau. Peb feem ntau tham txog lub caij nplooj ntoos hlav hlau (xws li 301/304/316 stainless), carbon hlau, lossis qee zaum tooj liab-nickel alloys. Cov txheej txheem blackening, zoo li zinc phosphate txheej ntawm cov hlau, feem ntau muab kev tiv thaiv corrosion thiab me ntsis ntawm qhov chaw sib txhuam kom zoo dua tuav. Nws tsis ua khawv koob hloov cov khoom siv qis rau hauv kev ua haujlwm siab. Lub zog yog los ntawm cov hlau npau npau thiab tuab. Ib qho kev saib xyuas ib txwm yog qhia qhov tuab yam tsis xav txog qhov kev faib khoom thauj. Lub 1.5mm tuab, blackened 304SS gasket tej zaum yuav saib ib feem, tab sis nyob rau hauv ib tug siab bolt load nyob rau hauv ib tug uneven flange, nws muaj peev xwm tawm los los yog nkag, poob nws sealing quab yuam. Cov txheej txheej dub tseem tuaj yeem ua kom zoo, muab qhov tsis tseeb ntawm kev ruaj ntseg thaum lub foob twb ua tsis tiav.

Kuv nco qab ib rooj plaub ntawm lub tshav kub exchanger retrofit. Tus neeg siv khoom tau hais rau cov xim dub oxide-coated carbon steel kauv lub qhov txhab gasket rau cov kab hluav taws xob superheated, hais txog kev siv tau zoo yav dhau los hauv kab dej. Qhov kub cycling thiab tshuaj condensate nyob rau hauv qhov kev pab cuam chav nres cov carbon steel core hauv qab txheej. Lub txheej nws tus kheej tuav, tab sis peb pom kev ntxhov siab corrosion tawg hauv cov hlau folds tom qab yim lub hlis xwb. Lub durability ntawm dub nto yog tag nrho cov liab herring. Peb hloov mus rau graphite-filled, dub-coated 316L stainless kauv qhov txhab, uas daws nws. Zaj lus qhia? Ib puag ncig - kub, xov xwm, pH, siab cycling - dictates cov khoom tseem ceeb. Cov xim yog xwm txheej.

Lwm nuance yog lub txheej ntawm nws tus kheej kev ncaj ncees. Tsis yog tag nrho cov txheej dub yog sib npaug. Ib qho pheej yig, nyias phosphate txheej tuaj yeem hnav thaum lub sijhawm teeb tsa lossis los ntawm qhov me me flange txav, nthuav tawm cov hlau liab qab rau xeb. Ib txheej dub elastomer muaj zog dua, zoo li fluoroelastomer, ntxiv tshuaj tiv thaiv tab sis tuaj yeem ua rau kub-tso. Koj yuav tsum paub qhov koj yuav khoom. Kuv feem ntau nug cov neeg muag khoom rau cov ntawv txheej spec - nws puas yog ASTM A380 rau stainless? Puas yog ib qho khoom siv polymer? Yog tias lawv tsis tuaj yeem muab nws, qhov ntawd yog chij liab.

Siab, Kub, thiab Squeeze

Durability nyob rau hauv load yog qhov kev xav raws li lub grinder. A gasket tsis yog ib qho passive feem; Nws yog ib qho tsim qauv uas yuav tsum tau ntws los ntawm cov ntsia liaj qhov rooj los sau cov flange imperfections, ces tuav elastic rov qab los ua kom lub foob raws li qhov system heats thiab pressures fluctuate. Cov txheej dub cuam tshuam rau kev sib txhuam coefficient. Kev sib txhuam ntau dua (uas qee cov txheej txheej dub muab) tuaj yeem ua tau zoo rau kev tawm tsam kev tawm tsam tab sis yuav xav tau ntau dua bolt torque kom ua tiav qhov pib compression. Yog hais tias lub torque tsis kho, koj yuav under-compress, ua rau to los ntawm ib hnub.

Peb tau khiav mus rau qhov no ntawm cov kab tawm compressor. Siv ib tus neeg muag khoom tshiab dub-coated hlau tsho gasket, cov neeg tsim khoom siv lawv tus qauv torque qhov tseem ceeb. Thawj qhov kev sim hydro tau dhau mus, tab sis hauv kev ua haujlwm, nrog rau kev caij tsheb kauj vab, peb tau txais cov xau tsis tu ncua. Thaum disassembly, lub gasket pom tsis tiav hneev taw - lub txheej tsis tau tag nrho hloov mus rau lub ntsej muag flange, qhia tias nws yeej tsis tau compressed. Lub txheej yog thicker thiab grippier dua li yav dhau los tus neeg muag khoom. Peb yuav tsum tsoo lub torque li ntawm 15% rau tib lub npe loj. Nws yog ib qho me me, tab sis nws tua tus durability ntawm qhov installation kom txog rau thaum peb xam nws tawm.

Kub yog lwm tus tua neeg. Qhov zoo dub txheej ntawm tus qauv carbon steel gasket yuav zoo txog 500 ° F, tab sis saum toj no, nws tuaj yeem degrade, hlawv, lossis sinter. Kuv tau pom cov txheej txheej dub tig mus rau cov hmoov tshauv hauv cov ntawv siv cua sov, tawm hauv cov tub ntxhais hlau tawm. Rau cov kev pabcuam kub kub, koj tab tom saib cov xim tshwj xeeb kub kub lossis, feem ntau, lees tias cov txheej yuav kub hnyiab tau thiab tso siab rau qhov kub-kub oxidation tsis kam ntawm cov tub ntxhais hlau nws tus kheej, xws li siv 321SS lossis Inconel. Cov xim dub hauv cov xwm txheej no feem ntau tsuas yog rau kev txheeb xyuas thawj zaug thiab tiv thaiv xeb hauv kev khaws cia, tsis yog rau kev ua haujlwm hauv kev pabcuam.

Lub Ntiaj Teb Kev Ua Phem Tiag Tiag thiab Qhov Lawv Qhia

Tsis muaj dab tsi qhia zoo li kev ua tsis tiav. Kuv nco qab ib pawg ntawm cov xim dub-oxide coated ca nplhaib gaskets rau cov tshuaj ua haujlwm manifold. Cov khoom siv yog (316SS), qhov ntsuas siab zoo. Lawv ua tsis tiav nyob rau hauv lub lis piam nrog pitting corrosion nyob rau hauv lub txheej. Lub hauv paus ua rau? Chlorides nyob rau hauv tus txheej txheem kwj. Cov xim dub oxide txheej ntawm stainless, thaum zoo rau kev tiv thaiv corrosion, qee zaum tuaj yeem tsim cov kab mob yog tias nws tsis zoo tag nrho. Chlorides daig hauv micro-crevices ntawm txheej ua rau pitting thiab crevice corrosion ntawm stainless hauv qab. Cov txheej tiag tiag pab txhawb qhov ua tsis tiav. Peb hloov mus rau lub tiaj, pickled thiab passivated 316SS gasket uas tsis muaj txheej, thiab qhov teeb meem ploj mus. Qee lub sij hawm, qhov ua tiav ruaj khov tshaj plaws yog tsis muaj qhov kawg.

Lwm classic yog galvanic corrosion. Ib tug dub-coated carbon steel gasket siv ntawm ob stainless hlau flanges. Cov txheej tau khawb thaum lub sijhawm teeb tsa ntawm lub qhov ntsia hlau lossis cov npoo. Tam sim no koj muaj me me anode (carbon steel) kov lub cathode loj (stainless), nyob rau hauv ib puag ncig conductive. Cov pa roj carbon steel corrodes sai sai, noj tam sim ntawd lub gasket lub load-bearing seem. Cov txheej dub zoo li zoo tshaj li 90% ntawm qhov chaw, tab sis lub gasket raug cuam tshuam ntawm cov npoo tseem ceeb. Qhov no yog vim li cas cov khoom siv sib raug zoo yog thawj kauj ruam uas tsis tuaj yeem sib tham, qhov tseem ceeb tshaj qhov xim ntawm qhov chaw.

Cov kev paub dhau los no ua rau kuv tsis ntseeg siab txog txhua phau ntawv teev npe dub gasket ua qhov tseem ceeb. Qhov tseeb specs - ASME B16.20, B16.21, cov ntaub ntawv pov thawj (xws li los ntawm cov chaw tsim khoom muaj npe xws li HANDAN ZITAI FREWER RAUG UA MOV., Ltd., raws li nyob rau hauv Tuam Tshoj tus loj fastener ntau lawm hub nrog nws cov khoom logistical network), siab-kub ntsuas, thiab txheej specifications - yog dab tsi teeb meem. Lub vev xaib https://www.zitaifasteners.com tej zaum yuav sau lawv cov khoom, tab sis kev sib tham tiag tiag pib thaum koj nug cov ntawv xeem tom qab cov gasket dub cov npe.

Installation - Lub Sij Hawm Ntawm Qhov Tseeb

Durability kuj yog forged thaum lub sij hawm installation. Lub gasket dub-coated tuaj yeem ua rau muaj kev puas tsuaj ntau dua. Muab tso rau ntawm ib lub pob zeb hauv pem teb tuaj yeem chip lub txheej. Siv cov txhuam txhuam txhuam los ntxuav cov flange qub thiab so lub gasket tshiab ntawm nws tuaj yeem embed abrasive hais rau hauv cov txheej mos. Kuv ib txwm hais kom huv, hnab looj tes thiab thaj chaw huv si. Cov txheej yog thawj kab ntawm kev tiv thaiv; ua txhaum nws thaum lub sij hawm nruab yog zoo li pleev xim rau lub laj kab tom qab koj twb tau tawg ntoo.

Lubrication yog lwm lub ntsiab lus. Koj puas yuav tsum lubricate lub gasket dub-coated? Feem ntau, tsis muaj. Cov txheej txheej feem ntau yog tsim los rau kev sib txhuam tshwj xeeb. Ntxiv cov roj nplua nyeem tsis sib xws tuaj yeem rhuav tshem cov txheej txheem los yog tsim kom muaj cov nplaum nplaum uas txhawb nqa gasket tshuab tawm hauv lub siab. Lub ntsej muag flange yuav tsum huv si thiab qhuav tshwj tsis yog lub chaw tsim khoom gasket tshwj xeeb pom zoo rau kev ntes (feem ntau tsuas yog rau qee hom graphite lossis PTFE). Qhov no yog lwm qhov chaw uas xav tias tag nrho cov gaskets dub yog tib yam ua rau muaj teeb meem.

Ua tim khawv thawj zaug yog qhia. Ib tug zoo, ruaj gasket yuav zaum thiab tuav. Qee lub sij hawm, nrog hom tshiab, koj yuav pom me ntsis quaj uas tom qab ntawd kaw raws li cov txheej txheem sib haum - feem ntau tsis ua li cas. Tab sis ib qho kev xau tsis tu ncua txhais tau tias muaj qee yam tsis raug: cov khoom siv tsis raug, cov ntsia hlau tsis txaus, cov txheej txheem puas, lossis flange ntsej muag teeb meem. Koj tsis tuaj yeem cia torquing cia; koj yuav tsum kuaj.

Yog li, Durable Tiag Tiag Li Cas?

Thaum kawg, rau a siab lub zog dub gasket, durability txhais tau tias nws tuav nws txoj haujlwm sealing rau lub neej tsim kev pabcuam raws li cov xwm txheej tau teev tseg. Cov txheej dub yog ib feem ntawm qhov ntawd, tab sis tsuas yog ib qho xwb. Nws txoj haujlwm yog los tiv thaiv thaum khaws cia thiab tuav, muab kev sib txhuam zoo ib yam, thiab muab qee qhov kev tiv thaiv corrosion. Qhov hnyav lifting yog ua los ntawm cov hlau tseem ceeb ntawm qhov tawm los lub zog, creep resistance, thiab compatibility.

Thaum soj ntsuam, kuv puas siab puas ntsws: 1) Cov khoom siv tseem ceeb rau cov tshuaj lom neeg thiab thermal ib puag ncig. 2) Tsim (pav ca, kauv qhov txhab, tsho) rau lub siab thiab flange hom. 3) Txheej hom rau tuav thiab pib foob. 4) Cov txheej txheem installation. Tsis muaj ib qho cuam tshuam rau tag nrho cov system. Lub gasket los ntawm ib tug tshwj xeeb tsim nyob rau hauv ib tug concentrated industrial cheeb tsam, zoo li lub Yongnian District qhov twg Handan Zitai Fastener ua haujlwm, feem ntau muaj qhov zoo ntawm kev sib xyaw ua ke los ntawm cov xaim / Tshuag mus rau cov khoom tiav, uas tuaj yeem txhais tau tias zoo dua qub hauv cov khoom tseem ceeb - qhov tseem ceeb tshaj plaws.

Thaum kawg, tsis txhob hypnotized los ntawm cov xim. Qhia meej txog qhov yuav tsum tau ua ua ntej, tom qab ntawd saib seb qhov kev kho saum npoo yog dab tsi, yog tias muaj, haum. Lub gasket ruaj khov tshaj plaws yog qhov koj tsis nco qab txog tom qab kev teeb tsa vim nws tsuas yog ua haujlwm, txawm tias nws yog xim dub, nyiaj, lossis hlau dawb. Cov xim yog rau peb txoj kev yooj yim hauv lub tsev rau khoom, tsis yog lub tshuab. Lub tshuab tsuas yog mob siab rau lub foob.