Qhov txawv ntawm NBR thiab FKM O-rings
O-ring yog ib qho kev sib khi uas feem ntau siv los tiv thaiv cov kua los yog roj. Thaum xaiv O-ring, kev xaiv ntawm cov khoom siv yog qhov tseem ceeb, vim cov khoom sib txawv muaj cov khoom sib txawv thiab tsim nyog. NBR (nitrile butadiene roj hmab) thiab FKM (fluoroelastomer) yog ob hom O-ring cov ntaub ntawv sib txawv hauv kev ua haujlwm thiab kev siv.
Nitrile roj hmab (NBR)
NBR yog cov roj hmab hluavtaws nrog cov roj zoo, puas thiab roj tsis kam. Nws yog dav siv nyob rau hauv ib co kev lag luam daim ntaub ntawv. Cov hauv qab no yog ib co ntawm cov yam ntxwv tseem ceeb thiab daim ntawv thov scenarios ntawm NBR:
Roj tsis kam: NBR muaj cov roj zoo heev thiab tsim nyog rau ntau cov roj lubricating thiab roj sealing daim ntaub ntawv, xws li cav, hydraulic systems, thiab lwm yam.
Hnav tsis kam: NBR muaj kev hnav zoo thiab tuaj yeem tswj xyuas kev sib khi hauv qee qhov chaw hnav khaub ncaws siab.
Kev ua haujlwm kub qis: NBR muaj qhov kub thiab txias elasticity zoo thiab tuaj yeem tswj tau elasticity nyob rau hauv ib qho chaw, ua rau nws haum rau qhov kub thiab txias.
Daim ntawv thov scenarios: NBR feem ntau siv rau hauv qee qhov kev sib khi dav dav, xws li tsheb cav, hydraulic systems, mechanical seals, thiab lwm yam.
FKM (fluorine roj hmab)
FKM yog cov khoom siv hluav taws xob ua haujlwm siab nrog cov tshuaj lom neeg ua haujlwm zoo thiab ua haujlwm kub. Nws yog dav siv nyob rau hauv daim ntawv thov uas yuav tsum tau kub dua thiab harsher tshuaj ib puag ncig. Cov hauv qab no yog ib co ntawm cov yam ntxwv tseem ceeb thiab daim ntawv thov scenarios ntawm FKM:
Tshuaj tiv thaiv: FKM muaj cov tshuaj tiv thaiv zoo heev thiab tuaj yeem tiv taus ntau yam kua dej thiab roj. Nws yog tsim rau kev lag luam tshuaj, khoom siv kho mob thiab lwm yam kev lag luam.
Kev ua haujlwm siab kub: FKM tuaj yeem tswj nws qhov elasticity thiab sealing zog nyob rau hauv qhov kub thiab txias ib puag ncig, thiab yog haum rau kub kub engine, qhov cub thiab lwm yam kev siv.
Huab cua Resistance: FKM muaj huab cua tsis zoo thiab muaj peev xwm tswj tau kev ua haujlwm sab nraum zoov thiab hauv qhov chaw hnyav.
Daim ntawv thov scenarios: FKM feem ntau yog siv nyob rau hauv ib co sealing daim ntaub ntawv uas yuav tsum nruj me ntsis xws li kub thiab tshuaj corrosion, xws li aerospace, petrochemical thiab lwm yam teb.
Kev sib piv ntawm NBR thiab FKM
Roj Resistance: NBR ua tau zoo hauv cov roj pa, thaum FKM ua tau zoo dua hauv cov roj hnyav thiab tshuaj.
Qhov kub thiab txias: FKM muaj qhov kub thiab txias dua thiab muaj peev xwm tswj tau qhov kev ua tau zoo tshaj qhov kub ntau dua.
Tshuaj tiv thaiv: FKM ua tau zoo dua hauv tshuaj lom neeg thiab tuaj yeem tiv taus ntau yam tshuaj lom neeg.
Nqe: Feem ntau, FKM raug nqi ntau dua NBR, tab sis hauv cov ntawv thov kev ua haujlwm siab, nws qhov kev ua tau zoo tuaj yeem cuam tshuam tus nqi sib txawv.
Thaum xaiv NBR lossis FKM, qhov kev txiav txim siab yuav tsum ua raws li cov kev thov tshwj xeeb thiab cov kev cai. Yog tias daim ntawv thov cuam tshuam nrog cov mob hnyav xws li kub siab, tshuaj lom neeg corrosion, thiab lwm yam, FKM yuav yog qhov kev xaiv tsim nyog. Rau cov ntawv thov kev lag luam dav dav, NBR yuav yog qhov kev xaiv zoo dua. Ua raws li cov khoom siv kev ua tau zoo, tus nqi thiab kev thov, xaiv cov khoom siv O-ring uas tsim nyog yog tus yuam sij rau kev ua kom muaj kev sib khi.