Cov roj hmab grommet muaj ntau yam kev siv, los ntawm cov khoom siv kis las mus rau kev lag luam tsheb, kev kho mob, thiab lwm yam. Muaj ntau hom roj hmab grommets, piv txwv li, oval roj hmab grommets, zoo li roj hmab grommets, thiab lwm yam.
Rubber Grommet yog dab tsi?
Cov roj hmab grommet yog ib hom kev txuas uas kaw cov npoo ntse ntawm ntau yam khoom siv tshuab, hluav taws xob, lossis kev tsim khoom. Lawv ua haujlwm ntau yam, xws li tiv thaiv cov xov hlau los ntawm kev txiav, sealing, txo kev vibration los tiv thaiv cov khoom rhiab, thiab lwm yam.
Roj hmab grommetsyog qhov tseem ceeb hauv kev tiv thaiv cov cables, xov hlau, thiab cov kav dej los ntawm kev hnav thiab tsim kua muag vim kev sib txhuam. Lawv kuj ua haujlwm raws li kev txwv tsis pub dej thiab plua plav los ntawm cov khoom puas. Tsis tas li ntawd, cov roj hmab grommets yog tshwj xeeb tshaj yog pab tau vim hais tias lawv muaj flared dab tshos uas kaw lawv nyob rau hauv qhov chaw thiab yooj yim installation.
Txawm li cas los xij, roj hmab grommets muaj ntau lwm lub npe, xws li eyelets, edging, bushing, insulating, thiab lwm yam. Nws yog hu ua insulating bushing, feem ntau yog siv hauv cov khoom siv hluav taws xob. Xws li grommets muaj qhov loj me feem ntau txog 51 hli.
Cov ntaub ntawv xaiv ntawm Rubber Grommets
Kev siv cov roj hmab grommet nyob ntawm seb hom khoom nws yog ua los ntawm. Peb tau tham txog qee yam khoom siv rau cov roj hmab grommets hauv qab no.
Thermoplastic Elastomer (TPE)
Thermoplastic elastomer yog ib qho txiaj ntsig zoo rau kev tsim cov roj hmab grommet. Cov khoom no muaj cov yam ntxwv zoo ib yam li cov roj hmab ntuj. Cov khoom hluav taws xob ntawm TPE zoo nkauj heev.
Nyob rau tib lub sijhawm, nws yog flexural qaug zog tiv taus thiab tuaj yeem ua kom nws cov khoom tsis tu ncua hauv huab cua sib txawv. Nws kuj yog tshuaj resistant. TPE ua haujlwm ntawm qhov ntau ntawm -22 degree F - 284 degree F kub thiab nws lub zog cuam tshuam zoo heev.
Ethylene Propylene Diene Monomer (EPDM)
Hais txog hluav taws xob rwb thaiv tsev zoo heev, ethylene propylene diene monomer, aka EPDM, yog nyob rau sab saum toj ntawm daim ntawv. Cov neeg tsim khoom nyiam cov roj hmab ethylene-propylene ntawm cov tiam tom ntej vim nws tiv taus huab cua zoo heev.
Nws cov khoom ua rau nws zoo meej rau kev siv sealing. Vim li no, nws suav hais tias yog cov khoom siv grommet zoo heev. Nws qhov ntsuas kub ua haujlwm yog -60 degree F - 300 degree F.
Styrene-Butadiene Roj Hmab (SBR)
Cov roj hmab styrene-butadiene muaj qhov zoo sib xws nrog cov roj hmab nitrile. Tab sis nitrile roj hmab yog softer dua SBR. Nws yog tsim rau hoses, siv, gaskets, seals, thiab ntau yam teb uas yuav tsum tau waterproof. Nws ua haujlwm nyob rau hauv -60 degree F - 250 degree F kub.
Thermoplastic Vulcanizate (TPV)
Thermoplastic vulcanizate yog ib hom TPE. Qhov no tseem hu ua TPE-V. TPV yog qhov tsim nyog rau ntau daim ntawv thov kev sib khi vim nws muaj cov yam ntxwv zoo sib xws rau EPDM. Nws yog siv dav hauv qab hood hauv kev lag luam tsheb, tshwj xeeb tshaj yog radiators.
Nws yog tsuas yog siv rau nws cov khoom cua sov-resistant thiab ua tau zoo nkauj nyob rau hauv oily ib puag ncig. Nws ua haujlwm nyob rau hauv qhov ntau ntawm -76 degree F - 275 degree F kub.
Buna-N Grommets
Buna-N roj hmab grommets tseem hu ua NBR. Nws yog cov khoom siv zoo tshaj plaws piv rau lwm cov khoom siv roj hmab feem ntau thaum nws los ua roj-resistant. Tab sis nws qhov ntim tsis kam yog qis dua li lwm cov khoom siv roj hmab. NBR yog cov khoom siv roj hmab semiconductor uas muaj cov khoom ua haujlwm zoo.
FKM Grommets
Cov tshuaj stability ntawm FKM yog zoo heev. Vim li no, FKM grommets yog ib qho zoo tshaj plaws elastomers. Cov neeg tsim khoom siv FKM nyob rau hauv ib puag ncig uas muaj zog alkali thiab acid cov ntaub ntawv lossis cov khoom siv. Tsis tas li ntawd, nws qhov kev ua haujlwm kub tuaj yeem ncav cuag 300 degree, thiab nws yuav ua haujlwm zoo kawg nkaus ntawm qhov kub thiab txias rau lub sijhawm ntev.
Neoprene Grommets: xyuas
Cov neeg tsim khoom siv neoprene los ua grommets yog tias lawv xav tau ozone kev laus zoo, tshav kub, thiab huab cua tsis kam. Lawv zoo meej rau siv nyob txhua qhov chaw, tsis hais huab cua.
Kev ua tau zoo ntawm cov nplaim hluav taws kub yog zoo heev rau neoprene grommets. Vim li no, cov tuam ntxhab kuj siv nws ntawm cov khoom uas xav tau cov nplaim hluav taws kub.
Silicone Grommets
Yog tias cov tuam txhab xav tau ua grommets nrog cov xim ci, lawv siv silicone. Silicone grommets yog ib puag ncig-phooj ywg thiab nyab xeeb siv. Nws tsis yog ib qho teeb meem yog tias silicone roj hmab grommets tiv tauj nrog daim tawv nqaij lossis khoom noj.
Cov nyhuv anticoagulant ntawm silicone roj hmab grommets tiv thaiv lawv los ntawm adhering rau cov ntaub so ntswg ntawm tib neeg. Qhov no yog vim li cas nws zoo meej rau cov khoom siv kho mob thiab kev siv.
Rubber Grommets Ua li cas?
Muaj ntau txoj hauv kev los ua cov roj hmab grommets, xws li compression, txhaj, hloov, thiab lwm yam. Cov txheej txheem tsim khoom no tau tham hauv qab no:
Compression Moulding
Cov khoom tseem ceeb ntawm cov txheej txheem compression molding yog ob lub pwm (ib qho yog txav tau thaum lwm qhov yog kho), tus nqi lossis cov khoom siv raw (yuav yog roj hmab lossis lwm yam khoom siv roj hmab), thiab tus pin ejector.
Hauv qab no yog cov txheej txheem ib ntus ntawm yuav ua li cas compression molding ua haujlwm:
1. Ua ntej, tus nqi lossis cov khoom siv roj hmab raw yog muab tso rau ntawm cov pwm ruaj khov, uas yog cov pwm qis.
2. Tom qab ntawd cov pwm tuaj yeem thawb tus nqi qis, thiab tus nqi ua tiav cov pwm pwm.
3. Ib tus pin ejector yog siv los tshem tawm qhov kawg, thiab ib feem yog npaj siv.
Yog li, qhov no yog li cas compression molding ua haujlwm los ua cov roj hmab grommets.
Txhaj Molding
Ntau qhov chaw uas tsim cov txheej txheem txhaj tshuaj molding yog hopper, ntsia hlau, chim, nozzle, pwm, ejector pins, thiab lwm yam.
1. Thaum xub thawj, cov pellets los yog cov roj hmab melted raug coj mus rau hauv lub hopper.
2. Tom qab ntawd cov pellets poob rau hauv lub thoob, thiab cov ntsia hlau tig kom cov sib tov sib xyaw.
3. Lub tshuab cua sov yog siv los khaws cov nqi ntawm qhov kub thiab txias.
4. Raws li cov ntsia hlau tig, cov sib tov yog txhaj los yog ntxig rau hauv cov pwm los ntawm lub nozzle.
5. Thaum tus nqi tsim cov pwm xav tau, cov pwm sib cais qhib.
6. Thaum kawg, ejector pins pab tshem tawm qhov ua tiav.
Txoj kev txhaj tshuaj molding no ua rau cov roj hmab grommets ntawm ntau qhov sib txawv, duab, thiab xim.
Hloov Molding
Cov khoom tseem ceeb ntawm kev hloov molding yog lub plunger, hloov lub lauj kaub, pwm, spruce, cua sov, ejector pins, thiab lwm yam. Hauv qab no yog cov kauj ruam ua haujlwm ntawm kev hloov molding:
1. Ua ntej tus nqi muab tso rau hauv lub lauj kaub hloov.
2. Tom qab ntawd lub plunger thawb tus nqi mus rau hauv pwm kab noj hniav.
3. Muaj cov cua sov txuas nrog lub plunger uas ua kom cov nqi kub.
4. Tus nqi yog muab tso rau hauv kab noj hniav los ntawm spruce thiab cov ntaub ntawv rau hauv qhov yuav tsum tau muaj.
5. Thaum kawg, cov pwm qhib, thiab cov ejector pins yog ib feem tawm.
Yog li, qhov no yog li cas cov txheej txheem hloov pauv molding yog siv rau ntau cov roj hmab grommets nrog cov hardness thiab abrasion tsis kam.
Ib txwm zoo li Rubber Grommets
Roj hmab grommets muaj ntau daim ntawv thov, xws li rooj tog zaum thiab kev siv tub rog. Tsis tas li ntawd, cov no yog siv nyob rau hauv qhov ntawm ntau yam khoom siv hluav taws xob, tshuab, thaiv, vaj huam sib luag, hlua, thiab lwm yam.
Raws li cov kev siv sib txawv no, muaj qee cov qauv ntawm cov roj hmab grommets. Cov duab no tau teev tseg hauv qab no:
- Oval Roj Hmab Grommets
- Round Rubber Grommets
- Oblong Rubber Grommets
- Qhov muag tsis pom roj hmab Grommets
- Square Grommets
- D Zoo Rubber Grommets
- Tshwj xeeb Shape Grommets
Hom Roj Hmab Grommets
Muaj ntau hom roj hmab grommets raws li kev siv. Cov no yog:
Push-hauv Flexible Grommets
Cov roj hmab grommet no feem ntau pom nyob rau hauv qhov muag tsis pom qhov ntawm cov khoom siv hluav taws xob. Lawv tuaj yeem tiv thaiv cov xov hlau hauv qhov ntawm cov hlau vaj huam sib luag lossis ua haujlwm los tiv thaiv ko taw rau cov khoom siv. Hom roj hmab grommet no yog tsim los ntawm polypropylene thiab TPE.
Standard Grommets
Standard grommets yog puag ncig roj hmab grommets. Cov grommets no feem ntau yog ua los ntawm SBR thiab TPV. Round grommets muaj feem xyuam rau cov thawv sib txuas ntawm lub tsheb, chassis, thiab lub qhov (socket boxes).
Diaphram Grommets
Diaphram grommets feem ntau yog roj hmab cable grommets. Muaj ib zaj duab xis nyias nyob hauv nruab nrab ntawm cov roj hmab cable grommets. Qhov no yog tam sim no los ua qhov sib txawv ntawm qhov sib txawv kom lwm cov cables tuaj yeem hla nws mus rau lub vaj huam sib luag.
Hom roj hmab grommet no tsuas yog siv rau hauv kev tswj sib txawv. TPE yog cov khoom tseem ceeb rau kev ua diaphragm grommets.
Stepped Grommets
Cables nrog txawv diameters yuav haum los ntawm stepped grommets. Lub tapered feature tso cai rau cov cables tuab dhau los ntawm nws. Nws qhov loj tuaj yeem hloov kho rau cov kab tuab tuab. Stepped roj hmab grommets yog tsim rau HVACs, panels, thiab vaj huam sib luag qhov. Cov khoom tseem ceeb rau kev ua cov grommet no yog EPDM.
Sealing Grommets
Yog hais tias muaj kev xav tau rau cov roj hmab grommets rau lub qhov puag ncig, ces sealing grommets yog zoo meej. Hom roj hmab grommet no tuaj yeem tiv taus kev vibrations yooj yim. Raws li nws feem ntau yog ua los ntawm EPDM, nws yog waterproof. Lub sealing roj hmab grommet ua tau zoo heev nyob rau hauv greasy thiab oily ib puag ncig.
Quick-Fit Grommets
Ib qho yooj yim-haum roj hmab grommet feem ntau yog ib daim duab tapered. Qhov no tso cai rau kev teeb tsa sai. Xws li cov roj hmab grommets yog tsim rau ntse phaj txiav, npoo ntawm hluav taws xob enclosures, thiab panels. Cov no yog ua los ntawm TPE lossis silicone. Cov ntaub ntawv no yog cov sealants zoo heev thiab muaj kev tiv thaiv kub zoo heev.
Edging Rubber Grommets
Edging roj hmab grommets muaj feem xyuam rau cov chaw uas muaj kev sib txuas ntev ntev ntawm cov xaim thiab cables. Nws yog ib qho yooj yim los txiav qhov ntev ntev rau lub grommet los tiv thaiv cables thiab thaiv. Nws feem ntau yog ua los ntawm TPE thiab kuj tseem siv rau hauv cov vaj huam sib luag ntawm lub tsheb.
cov lus xaus
Hauv kev xaus, cov roj hmab grommets yog tsim los tiv thaiv cov xaim thiab cable los ntawm cov khoom. Lawv yog ib qho tseem ceeb rau kev ua kom zoo sealing thiab rwb thaiv tsev hauv cov khoom siv hluav taws xob, khoom siv, thiab cov khoom siv.
Roj Hmab grommets yog tsim los ntawm ntau yam txuj ci, nrog rau kev txhaj tshuaj molding, siab molding, compression molding, thiab lwm yam. Cov txheej txheem no ua kom cov khoom lag luam zoo, ua haujlwm ntev ntev grommets rau ntau yam kev siv.
Thaum kawg, cov roj hmab grommets yog ib qho tseem ceeb rau ntau lub lag luam, los ntawm kev thauj mus los rau kev sib txuas lus, thiab lawv cov kev ua tau zoo thiab kev ua tau zoo tau ua rau lawv muaj kev saws me nyuam thoob plaws ntiaj teb.