Kev pabcuam lub neej cuam tshuam los ntawm txhua yam hauv qab no: -qhov loj me, siab, qhov kub thiab txias, qib siab hloov pauv thiab thermal fluctuation, hom xov xwm, kev caij tsheb kauj vab, kev tshaj tawm xov xwm & ceev ntawm lub valve.
Cov ntaub ntawv hauv qab no tuaj yeem siv rau hauv ntau yam li qub xws li pob, ntsaws, npauj npaim, rooj vag, kos li qub thiab lwm yam.
Cov khoom siv tshaj plaws rau lub pob valve lub rooj ntxig ntiv nplhaib cov khoom yuav yog
PTFE, RPTFE, PEEK, DEVLON / NYLON, PPL raws li qhov sib txawv, qhov loj me thiab kev ua haujlwm.
Cov khoom siv tshaj plaws rau lub pob valve mos sealing khoom yuav yog
yuav yog BUNA-N, PTFE, RPTFE, VITON, TFM, thiab lwm yam.
Txhawm rau sau ob peb yam khoom tseem ceeb:
BUNA-N (HYCAR lossis Nitrile)- Qhov kub thiab txias yog -18 txog 100 ℃ siab tshaj plaws.Buna-N yog lub hom phiaj dav dav polymer uas muaj kev tiv thaiv zoo rau cov roj, dej, cov kuab tshuaj thiab cov kua dej hydraulic.Nws kuj qhia tau zoo compression, abrasion tsis kam, thiab tensile zog.Cov khoom no ua tau zoo heev nyob rau hauv cov txheej txheem uas paraffin puag cov ntaub ntawv, fatty acids, roj, cawv los yog glycerins tam sim no, vim nws yog tag nrho unaffected.Nws yuav tsum tsis txhob siv nyob ib puag ncig cov kuab tshuaj siab polar (acetones, ketones), chlorinated hydrocarbons, ozone lossis nitro hydrocarbons.Hycar yog xim dub thiab yuav tsum tsis txhob siv qhov twg tsis tuaj yeem ua kom tsis muaj xim.Nws raug suav hais tias yog qhov sib piv hloov pauv neoprene.Qhov sib txawv loj yog: Buna-N muaj qhov ntsuas kub siab dua;neoprene tiv taus cov roj ntau dua.
EPDM- Kev ntsuas kub ntawm -29 ℃ to 120 ℃.EPDM yog polyester elastomer ua los ntawm ethylene-propylene diene monomer.EPDM muaj kev puas tsuaj zoo thiab tsim kua muag thiab muaj cov tshuaj tiv thaiv zoo rau ntau yam acids thiab alkalines.Nws yog qhov ua rau muaj kev tawm tsam los ntawm cov roj thiab tsis pom zoo rau cov ntawv thov uas muaj roj av, muaj zog acids, lossis muaj zog alkalines.EPDM yuav tsum tsis txhob siv rau ntawm cov kab cua compressed.Nws muaj tshwj xeeb zoo huab cua aging thiab ozone kuj..Nws yog qhov zoo rau ketones thiab cawv.
PTFE (Teflon)- PTFE yog cov tshuaj tiv thaiv zoo tshaj plaws ntawm tag nrho cov yas.Nws kuj muaj cov khoom siv hluav taws xob zoo thiab hluav taws xob rwb thaiv tsev.PTFE cov khoom siv kho tshuab tsis tshua muaj piv rau lwm cov yas engineering, tab sis nws cov khoom tseem nyob ntawm qhov muaj txiaj ntsig zoo tshaj qhov kub ntau (-100 ℃ txog 200 ℃, nyob ntawm hom thiab daim ntawv thov).
RTFE (Teb chaws TFE/ RPTFE)- Feem ntau qhov kub thiab txias yog -60 ℃ to 232 ℃.RPTFE / RTFE yog compounded nrog ib tug xaiv feem pua ntawm fiber iav muab tub lim los txhim kho lub zog thiab kuj rau abrasive hnav, txias txaus, thiab permeation nyob rau hauv molded rooj.RTFE yuav tsum tsis txhob siv rau hauv daim ntawv thov uas tua iav, xws li hydrofluoric acid thiab kub muaj zog caustics.
CARBON Filled TFE- Qhov kub thiab txias yog -50 ℃ to 260 ℃.Cov pa roj carbon puv TFE yog cov khoom siv zoo tshaj plaws rau kev siv chav ua haujlwm nrog rau kev ua haujlwm siab roj-raws li thermal kua.Fillers suav nrog graphite ua rau cov khoom siv lub rooj zaum no kom muaj lub neej zoo dua li lwm lub rooj zaum TFE.Tshuaj tiv thaiv yog sib npaug rau lwm lub rooj zaum TFE.
TIAB SA 1600-TFM1600 yog ib qho kev hloov kho ntawm PTFE uas tuav cov tshuaj tshwj xeeb thiab cov khoom siv hluav taws xob kub ntawm PTFE, tab sis muaj qhov qis qis qis qis qis.Qhov tshwm sim yog txo cov dej txias porosity, permeability thiab void cov ntsiab lus.Surfaces smoother thiab txo torques.Qhov theoretical Kev pabcuam ntau yam rau TFM1600 yog -200 ℃ to 260 ℃.
TFM1600 + 20% GF-TFM1600 + 20% GF yog cov iav fiber ntau ntxiv ntawm TFM1600.Zoo ib yam li RTFE, tab sis nrog cov txiaj ntsig ntawm TFM1600, lub khob ntim cov ntawv muab kev tiv thaiv kev puas tsuaj ntau dua thiab txhim kho kev ruaj ntseg ntawm qhov siab dua.
TIAB SA 4215- TFM4215 yog ib qho elector graphitized carbon ntim cov khoom siv TFM.Cov pa roj carbon ntxiv txhim kho kev ruaj ntseg rau kev kub siab thiab kub ua ke.
VITON (Fluorocarbon, FKM, lossis FPM)- Kev ntsuas kub ntawm -29 ℃ to 149 ℃.Fluorocarbon elastomer yog inherently sib xws nrog ib tug dav spectrum ntawm tshuaj.Vim tias qhov kev sib raug zoo ntawm cov tshuaj lom neeg no muaj ntau qhov sib txawv thiab qhov kub thiab txias, fluorocarbon elastomer tau txais kev lees paub dav dav raws li cov khoom siv rau riam rooj vag valve rooj zaum. .Nws yog qhov zoo tshwj xeeb hauv kev pabcuam hydrocarbon.Xim yog grey (dub) los yog liab thiab tej zaum yuav siv tau rau bleached ntawv kab.Fluorocarbon (VITON) tsis haum rau chav los yog dej kub kev pab cuam, txawm li cas los, nyob rau hauv o-ring daim ntawv nws yuav tsum tau rau hydrocarbon kab tov nrog dej kub nyob ntawm seb. ntawm hom / hom.Rau cov ntaub ntawv rooj zaum FKM tuaj yeem muab kev tiv thaiv ntau dua rau cov chaw tsim khoom siv dej kub.
PEB-Polyetheretherketone-siab siab semi-rigid elastomer.Zoo tshaj plaws rau kev kub siab thiab kub kev pab cuam.Kuj tseem muaj kev tiv thaiv corrosion zoo heev. Kub ntsuas -56.6 ℃ to 288 ℃.
DELRIN/POM-Tshwj xeeb Delrin cov rooj zaum muaj rau kev ua haujlwm siab dua thiab qis dua qhov ntsuas kub.Yuav siv tau rau hauv huab cua siab, roj thiab lwm yam khoom siv hluav taws xob tab sis tsis haum rau oxidizing muaj zog.Tub kub ntsuas-50 ℃ to 100 ℃.
NYLON/DEVLON-Nylon (polyamide) cov rooj zaum muaj rau siab dua thiab kev pabcuam kub.Lawv tuaj yeem siv rau hauv huab cua kub, roj thiab lwm yam khoom siv hluav taws xob tab sis tsis haum rau oxidizing muaj zog.Kev ntsuas kub ntawm -100 ℃ to 150 ℃.Devlon muaj cov yam ntxwv ntawm kev nqus dej hauv qab mus ntev, muaj zog ua haujlwm siab thiab zoo nplaim hluav taws.Devlon yog dav siv nyob rau hauv cov roj thiab cov nkev pipelines txawv teb chaws rau lub trunnion pob valve chav kawm ntawv 600 ~ 1500lbs.
Edited by News team:sales@ql-ballvalve.comwww.ql-ballvalve.com
Tuam Tshoj sab saum toj teev Hoobkas tshwj xeeb hauv kev tsim pob li qub !
Post lub sij hawm: Oct-26-2022