Taw qhia
Cov dej xau yog ib qho kev txhawj xeeb hauv cov tsev neeg niaj hnub thiab cov chaw lag luam. Roj hmab foob tau tshwm sim los ua ib qho kev daws teeb meem tseem ceeb rau qhov teeb meem no. Qhov tsab xov xwm no yuav hais txog yuav ua li cas xaiv cov roj hmab foob kom ua tiav qhov teeb meem ntawm cov dej xau, los ntawm kev xaiv cov khoom siv mus rau cov lus qhia txog kev teeb tsa, kom koj tuaj yeem daws qhov teeb meem ntawm cov dej xau.
Kawm paub txog kev paub txog roj hmab foob
Roj hmab foob yog cov khoom siv roj hmab tsim los kaw cov pob qij txha. Lawv lub luag haujlwm tseem ceeb yog khaws cov kua dej (xws li dej, roj, thiab roj) los ntawm kev xau. Lawv feem ntau yog siv rau hauv faucets, yeeb nkab txuas, li qub, thiab lwm yam khoom siv los tswj kev ua haujlwm kom zoo thiab tsis txhob xau dej. Roj hmab seals 'cov khoom, hardness, daim ntawv, thiab lwm yam ntxwv muaj feem xyuam rau lawv cov sealing muaj peev xwm, yog li xaiv qhov tsim nyog foob yog ib qho tseem ceeb heev.
Yam tseem ceeb hauv kev xaiv cov roj hmab foob
Cov khoom siv foob
Cov khoom siv roj hmab muaj qhov sib txawv ntawm lub cev zoo thiab haum rau ntau yam kev siv. Cov khoom siv roj hmab feem ntau yog:
Fluororubber (FKM) tiv taus qhov kub thiab txias thiab tshuaj lom neeg corrosion, ua rau nws zoo heev rau kev siv kub, acidic, thiab alkaline.
Silicone tiv taus rau ob qho tib si qis thiab siab kub, ua rau nws zoo tagnrho rau kev teeb tsa nrog qhov kub thiab txias.
Hydrogenated nitrile roj hmab (HNBR) muaj cov roj ua haujlwm siab thiab yog qhov zoo tagnrho rau kev siv roj thiab roj nplua nyeem.
Cov roj hmab ntuj (NR) hloov tau thiab haum rau ntau yam kev mob, txawm hais tias nws muaj kev hnav tsis zoo.
Nitrile roj hmab (NBR): roj thiab hnav resistant, zoo tagnrho rau cov kua sealing daim ntaub ntawv.
Kev xaiv cov khoom tsim nyog yuav tsum muaj kev kawm paub meej ntawm qhov sib txawv xws li qhov kub thiab txias, tshuaj lom neeg, thiab siab nyob rau hauv qhov chaw siv tiag tiag.
Foob hardness
Lub hardness ntawm lub foob feem ntau yog sawv cev hauv Shore Hardness. Seals nrog sib txawv hardness yog tsim nyog rau ntau yam kev thov scenarios:
Cov mos mos thiab tawv (Shore hardness 60A-70A): tsim nyog rau feem ntau cov ntawv thov thiab muaj cov khoom sib khi zoo.
Harder (Shore hardness tshaj 70A): tsim nyog rau kev teeb tsa uas xav tau ntau dua, tab sis nrog kev hloov pauv tsawg.
Softer (Shore hardness < 60A): zoo tagnrho rau cov xwm txheej uas xav tau kev sib khi zoo heev tab sis txwv tsis pub muaj peev xwm.
Thaum txiav txim siab qhov hardness, coj mus rau hauv tus account qhov nruab nrab yuav tsum tau kaw los ntawm lub foob, nrog rau lub siab ntawm qhov chaw ua haujlwm.
Foob zoo thiab qhov loj me
Daim ntawv thiab qhov loj ntawm lub foob txiav txim nws lub peev xwm sealing thiab yooj yim installation. Cov duab zoo xws li O-rings, gaskets, sealing strips, thiab lwm yam. Xaiv cov ntawv tsim nyog thiab qhov loj me yuav tsum tau ntsuas qhov ntsuas qhov tseeb ntawm qhov chaw sib khi, xws li txoj kab uas hla, thickness, thiab lwm yam.
O-rings muaj txiaj ntsig zoo rau kev sib khi lub voj voog hla ntu.
Gasket muaj txiaj ntsig zoo rau kev sib khi sib txuas.
Sealing sawb yog qhov zoo tagnrho rau kev sib khi ntev strip txuas.
Qhov loj me thiab daim ntawv yuav lav tau tias lub foob haum ruaj ntseg tiv thaiv kev sib koom ua ke, ua rau muaj kev sib khi zoo txaus.
Ua haujlwm ib puag ncig
Thaum xaiv cov roj hmab foob, xav txog qhov tshwj xeeb xav tau ntawm qhov chaw ua haujlwm:
Kub: Kub kub tej yam kev mob yuav tsum tau kub kub resistant cov ntaub ntawv, whilst kub tsis tshua muaj teeb meem yuav tsum tau kub resistant cov ntaub ntawv.
Siab: Cov xwm txheej siab yuav tsum muaj cov khoom siv tawv tawv kom ua tiav cov sealing zoo.
Chemical chemicals: Chemically resistant seals yog tsim nyog rau cov xwm txheej uas cuam tshuam nrog cov tshuaj.
Hnav: Lub foob qhov hnav tsis kam yuav tsum tau hais txog, tshwj xeeb tshaj yog nyob rau hauv cov khoom txav lossis nrog kev siv tsis tu ncua.
Kev txhim kho thiab kho
Cov ntsaws ruaj ruaj yuav tsum tau nruab thiab tswj kom zoo kom ntseeg tau tias lawv ua tau zoo. Kev txhim kho kom raug ua kom ntseeg tau tias lub foob ua haujlwm zoo.
Ntxuav ua ntej installation: xyuas kom meej tias lub installation nto yog huv si thiab tsis muaj kab mob.
Txhawm rau tshem tawm cov dej xau los ntawm kev tsis sib xws, xyuas kom meej tias lub foob raug raug raws li kev sib koom ua ke.
Lub siab tsim nyog yuav tsum tau siv thaum lub sij hawm installation los tiv thaiv over-tightening los yog over-loosing.
Kev tshuaj xyuas tsis tu ncua: Tshawb xyuas lub foob raws li txoj cai tsis tu ncua thiab hloov txhua yam uas qub lossis tawg.
Roj hmab seals tej zaum yuav muaj lawv lub neej kev pab cuam lub neej ntev, thiab lawv cov sealing kev ua tau zoo tswj los ntawm kev ua raws li kev teeb tsa thiab kev saib xyuas kom zoo.
Tej teeb meem thiab kev daws teeb meem
Kuv yuav ua li cas yog tias lub foob tseem xau tom qab kev teeb tsa?
Yog tias lub foob tseem xau tom qab kev teeb tsa, nws yuav yog vim li cas hauv qab no:
- Lub foob loj tsis sib xws. Txheeb xyuas tias lub foob qhov loj me haum rau qhov sib koom ua ke.
- Kev Txhim Kho Tsis Zoo: Txheeb xyuas tias qhov kev teeb tsa yog qhov tseeb thiab tias lub foob haum zoo nrog qhov sib koom ua ke.
- Cov ntaub ntawv foob tsis tsim nyog: Xaiv cov khoom foob raug raws li qhov kev ua haujlwm tiag tiag.
Koj tuaj yeem txuas lub foob lub neej ua haujlwm li cas?
Tus yuam sij kom nce lub neej ntawm lub foob yog:
- Xaiv cov khoom tsim nyog thiab hardness.
- Kev kuaj xyuas thiab kev saib xyuas tsis tu ncua yuav tsum tau ua, nrog rau kev hloov cov ntsaws ruaj ruaj raws sijhawm.
- Tiv thaiv kom tsis txhob hnav ntau dhau thiab muaj kev kub ntxhov.
Kuv puas tuaj yeem hloov cov ntsaws ruaj ruaj rau kuv tus kheej?
Feem ntau, cov neeg siv khoom tuaj yeem hloov cov ntsaws ruaj ruaj lawv tus kheej. Nco ntsoov tias koj ua raws li cov lus qhia kev teeb tsa kom raug thiab xaiv cov ntsaws ruaj ruaj uas tsim nyog rau koj cov kev xav tau. Yog tias koj nyob rau hauv ib qho teeb meem nyuaj los yog tsis paub tseeb, nws yog qhov zoo tshaj plaws mus ntsib ib tus kws kho mob tshwj xeeb.
Cov ntsiab lus
Kev xaiv cov roj hmab kom raug yog qhov tseem ceeb rau kev daws cov dej xau. Kev nkag siab txog cov khoom siv, hardness, cov duab, thiab qhov loj ntawm lub foob, suav nrog kev ua haujlwm ntawm ib puag ncig, thiab kev txhim kho kom zoo thiab kev saib xyuas tuaj yeem daws qhov teeb meem ntawm cov dej xau thaum tseem txhim kho cov cuab yeej kev ntseeg siab thiab kav ntev. Thaum txiav txim siab thiab siv cov roj hmab foob, ua qhov kev ntsuam xyuas zoo raws li qhov xav tau tiag tiag los muab qhov zoo tshaj plaws sealing nyhuv. Los ntawm kev xaiv thiab kev siv kom zoo, koj tuaj yeem paub tseeb tias cov cuab yeej ua haujlwm tsis tu ncua thiab tshem tawm cov teeb meem uas tsis tuaj yeem zam thiab cov nqi uas tshwm sim los ntawm cov dej xau.