Hav nyob ntawd! Kuv yog tus xa khoom ntawm graphite gaskets, thiab kuv paub tias nws tseem ceeb npaum li cas los xyuas kom meej qhov zoo ntawm qhov roughness rau graphite gasket installation. Hauv qhov blog no, kuv mam li qhia qee cov lus qhia thiab kev ua kom yuam kev yuav ua li cas kom ua tiav qhov ntawd, yog li cia peb dhia mus rau hauv!
Vim li cas Nto Roughness Matters
Ua ntej tshaj, tej zaum koj yuav xav tsis thoob vim li cas qhov roughness yog qhov loj heev. Zoo, qhov roughness ntawm qhov chaw mating tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm graphite gasket. Ib qho chaw uas ntxhib dhau tuaj yeem ua rau lub gasket ua tsis tiav ntxov, ua rau cov dej xau thiab lwm yam teeb meem. Ntawm qhov tod tes, qhov chaw uas du dhau lawm yuav tsis muaj kev sib txhuam txaus rau lub gasket kom kaw kom zoo.
Yog li, nrhiav qhov sib npaug yog qhov tseem ceeb. Qhov zoo tshaj plaws nto roughness rau graphite gasket installation feem ntau ntog nyob rau hauv ib tug tshwj xeeb ntau yam, uas yuav txawv nyob ntawm seb daim ntawv thov thiab hom gasket siv. Feem ntau, qhov roughness ntawm ib ncig ntawm 125 - 250 micro - ntiv tes (Ra) yog suav tias tsim nyog rau feem ntau graphite gasket daim ntaub ntawv.
Ntsuas Qhov Roughness
Ua ntej koj tuaj yeem xyuas kom meej qhov zoo ntawm qhov roughness, koj yuav tsum tau ntsuas nws. Muaj ntau yam cuab yeej muaj rau lub hom phiaj no. Ib qho ntawm feem ntau yog tus nto roughness tester. Cov neeg ntsuas no ua haujlwm los ntawm kev rub lub stylus hla saum npoo thiab ntsuas qhov sib txawv ntsug ntawm qhov profile nto.
Thaum siv lub ntsej muag roughness tester, nco ntsoov ua raws li cov chaw tsim khoom cov lus qhia ua tib zoo. Siv ntau qhov kev ntsuas ntawm qhov chaw sib txawv ntawm qhov chaw kom tau txais qhov tseeb qhov nruab nrab. Qhov no yuav pab koj txiav txim siab seb qhov chaw ua tau raws li qhov xav tau roughness specifications.
Npaj cov Mating Surfaces
Thaum koj tau ntsuas qhov roughness saum npoo, nws yog lub sijhawm los npaj cov mating nto. Yog hais tias qhov saum npoo yog ntxhib heev, koj yuav tsum tau smooth nws tawm. Muaj ob peb txoj hauv kev los ua qhov no:
Tshuab dhos: Nov yog ib txoj hauv kev zoo tshaj plaws. Koj tuaj yeem siv lub tshuab dhos, zeb, lossis grinder kom tshem tawm cov khoom ntawm qhov chaw thiab ua tiav qhov xav tau roughness. Piv txwv li, yog tias koj ua haujlwm nrog cov hlau nto, kev sib tsoo lub teeb tuaj yeem pab txo qhov roughness.
Polishing: Rau qhov chaw me me lossis thaum yuav tsum tau ua kom zoo dua qub, polishing tuaj yeem yog qhov kev xaiv zoo. Koj tuaj yeem siv cov pawm abrasive lossis polishing compounds kom maj mam du nto. Tsuas yog ceev faj kom tsis txhob dhau - polish thiab ua kom lub ntsej muag du.
Yog hais tias qhov saum npoo yog du dhau lawm, tej zaum koj yuav tau ua kom lub roughness. Ib txoj hauv kev ua qhov no yog siv lub sandblaster. Sandblasting cuam tshuam nrog kev txhawb nqa cov khoom abrasive ntawm kev kub ceev mus rau saum npoo, tsim cov indentations me me thiab ua rau lub ntsej muag roughness. Txawm li cas los xij, ceev faj thaum siv txoj kev no, vim tias nws tuaj yeem nyuaj los tswj qhov tseeb ntawm qhov ua tiav.
Xaiv Txoj Cai Gasket
Lwm qhov tseem ceeb hauv kev ua kom muaj qhov zoo ntawm qhov roughness rau graphite gasket installation yog xaiv qhov zoo gasket. Ntau hom graphite gaskets muaj cov kev xav tau sib txawv thaum nws los txog rau qhov roughness.
Piv txwv li, nthuav graphite gaskets ntau dua kev zam txim thaum nws los txog rau saum npoo roughness piv rau cov khoom graphite gaskets. Expanded graphite muaj cov qauv hloov tau yooj yim dua, uas tso cai rau nws ua kom zoo dua rau qhov tsis sib xws. Yog li, yog tias koj tab tom cuam tshuam nrog qhov chaw uas muaj qhov siab dua me ntsis lossis qis dua qhov zoo tshaj plaws, qhov nthuav dav graphite gasket yuav yog qhov kev xaiv zoo dua.
Kev xav txog kev teeb tsa
Thaum lub sij hawm lub installation txheej txheem, muaj ob peb yam uas koj yuav ua tau kom paub tseeb tias qhov nto roughness tsis ua rau muaj teeb meem:
Ntxuav Cov Nto: Ua ntej txhim kho lub gasket, xyuas kom meej tias cov mating nto huv si. Txhua yam av, khib nyiab, lossis roj rau ntawm qhov chaw tuaj yeem cuam tshuam lub gasket lub peev xwm los kaw kom zoo. Koj tuaj yeem siv lub degreaser thiab ib daim ntaub huv los so ntawm qhov chaw.
Siv Txoj Cai Siab: Thaum zawm cov bolts los yog fasteners, siv lub siab npaum li cas. Tshaj - nruj yuav ua rau lub gasket puas thiab ua rau nws extrude, thaum nyob rau hauv - zawm yuav ua rau lub foob tsis zoo. Xa mus rau cov chaw tsim khoom gasket cov lus pom zoo rau qhov tsim nyog torque qhov tseem ceeb.
Kev Tswj Xyuas Zoo
Tom qab lub gasket raug teeb tsa, nws yog ib qho tseem ceeb uas yuav tau ua qee qhov kev tswj xyuas zoo. Saib rau tej yam tshwm sim ntawm to nyob ib ncig ntawm lub gasket. Koj tuaj yeem siv qhov ntsuas siab los kuaj xyuas qhov tseeb ntawm lub foob. Yog tias koj pom tias muaj qhov xau lossis lwm yam teeb meem, nws yuav tsum rov qab - ntsuas qhov roughness ntawm qhov chaw thiab ua qhov tsim nyog hloov kho.
Yam khoom
Yog tias koj nyob hauv kev ua lag luam rau lwm cov khoom lag luam graphite, peb kuj muaj qee qhov kev xaiv zoo. Mus saib peb Graphite Saw Hniav, uas yog tsim los rau siab - kev ua haujlwm txiav daim ntaub ntawv. Peb Pob Zeb Diamond Tuag - casting Pwm yog zoo meej rau precision tuag - casting ua haujlwm. Thiab yog tias koj koom nrog hauv pob zeb diamond core me ntsis kev tsim khoom, peb Graphite Waterway rau Pob Zeb Diamond Core Khoom tuaj yeem yog qhov tseem ceeb ntxiv rau koj cov kab ntau lawm.
Xaus
Ua kom qhov zoo ntawm qhov roughness rau graphite gasket installation yog ntau - cov txheej txheem uas suav nrog kev ntsuas, npaj qhov chaw, xaiv lub gasket zoo, thiab ua raws li cov txheej txheem kev teeb tsa kom raug. Los ntawm kev xyuam xim rau cov ntsiab lus no, koj tuaj yeem ua kom ntseeg tau tias koj cov graphite gaskets ua tau zoo thiab muab lub foob zoo.
Yog tias koj xav yuav graphite gaskets lossis muaj lus nug txog qhov roughness thiab gasket installation, thov koj xav tiv tauj. Peb nyob ntawm no los pab koj nrhiav cov kev daws teeb meem zoo tshaj plaws rau koj cov kev xav tau tshwj xeeb.
Cov ntaub ntawv
ASME B16.21 - Nonmetallic Flat Gaskets rau Yeeb Nkab Flanges
Chaw tsim tshuaj paus cov txheej txheem rau graphite gaskets
Cov ntaub ntawv qhia txog kev ntsuas qhov roughness thiab tswj