Adansi mfiri hydraulic transmission nhyehyɛe wɔ nneɛma atitiriw te sɛ gearbox torque converter (wɔfrɛ no sɛ mprenu nsakrae) ne adwuma unit hydraulic nhyehyɛe wɔ multi-kwan reversing valve ne O-ring ne nsɔano afoforo, wɔn mu dodow no ara de adi dwuma fluorine rɔba (FKM) ama sealing ade no wɔ ngo pa a ɛko tia, abrasion resistance ne ahoɔden a ɛko tia ɔhyew a ɛkorɔn ne nea ɛkeka ho, sɛnea ɛbɛyɛ a wobesiw ano leakage nhyehyɛe no, tu mpɔn nhyehyɛe no durability anya nkɛntɛnso pɔtee bi. Nanso, esiane sɛ nsɔano a ɛte saa wɔ hɔ nti, ne bo a ɛkɔ soro, ɛnyɛ den sɛ ɛbɛko atia rancidity a ɛsɛe ngo, awɔw a ɛko tia ne nneɛma afoforo a enye, a ɛma ade no bo kɔ soro, na ɛka ade no tɔn, enti ɛho hia sɛ wɔhwehwɛ ade a wɔde hyɛ mu a ɛho ka sua na ɛyɛ den sen sɛ wɔbɛhwehwɛ ade a wɔde hyɛ mu dedaw no.
HNBR ne Ne Nneɛma a Ɛwɔ Hɔ
HNBR yɛ elastomer foforo a ngo ntumi nkɔ mu a Nippon Zeon de bae wɔ 1984 mu, a wɔyɛɛ no sɛnea ɛbɛyɛ a wobedi hia a ehia ntɛm sɛ wɔde rɔba a wɔde hyɛ mu wɔ tebea horow a emu yɛ den mu wɔ kar adwumayɛ mu no ho dwuma. Ɛyɛ ngo a ɛkyɛn so a ɛko tia nitrile rɔba (code name NBR) molecule nhyehyɛe a ɛwɔ carbon-carbon abien bond selectively hydrogenated (saturated) processing a ɛyɛ molecule nhyehyɛe a nsakrae no, sesa NBR ɔhyew-resistant, maroon nnuru a ɛgyina pintinn a ɛyɛ ahiafo mmerɛwyɛ, a ahoɔden a ɛkyɛn so ne ahoɔden a ɛko tia ɔhyew a ɛkorɔn ne nea ɛba fam, ahoɔden a ɛko tia ngo ne nnuru media te sɛ nea ɛko tia adwumayɛ a ɛda nsow, ɛyɛ soronko na ɛkari pɛ yiye. Bere koro no ara mu no kura NBR a ɛko tia ɔsɛe a ɛkyɛn so ne nea wotumi yɛ ho adwuma no mu. Sɛ wɔde toto FKM ne NBR ho a
HNBR adwumayɛ su titiriw ne nea edidi so yi:
(1) Ɔhyew a wotumi sesa: Wobetumi de HNBR adi dwuma bere tenten wɔ l50 °C , bere tiaa mu ɔhyew a wɔde di dwuma kosi l75 °C.
HNBR, wobetumi de adi dwuma bere tenten wɔ 230 °C , bere tiaa mu ɔhyew a wɔde di dwuma kosi 300 °C . HNBR ɔhyew a ɛko tia NBR ne FKM ntam, nanso wɔ ɔhyew a ɛba fam a ɛko tia ho no, FKM awɔw a ɛko tia no nyɛ papa (-15 °C a ɛnyɛ den sɛ ɛbɛbubu abubu); na HNBR wɔ ɔhyew a ɛba fam adwumayɛ a ɛkyɛn so, a ɛkari pɛ yiye wɔ ngo a ɛko tia no ntam
(2) Honam fam ne mfiridwuma mu su: rɔba dodow no ara a ɛko tia ngo esiane ahoɔden a ɛtwetwe a ɛba fam nti, enti ɛto nea wɔde di dwuma no ano hye, te sɛ FKM ahoɔden a ɛtwetwe a ɛyɛ 19.6-21.6MPa, HNBR ahoɔden sen NBR, ACMXNBR, EPDM ne FKM ne rɔba ahorow afoforo korɔn, te sɛ Zeon ZSC hydrogenated nitrile butadiene rɔba tensile ahoɔden a ɛkɔ 6OMPa nea ɛho hia kɛse no, HNBR wɔ ɔhyew a ɛkorɔn ( Nea ɛho hia kɛse no, HNBR wɔ ɔhyew a ɛkorɔn ( 15O °C ) ase ahoɔden ( 14.7-29.4MPa ) ne dan mu hyew NBR sɛ ɛbɛkɔ so ayɛ pɛ wɔ ɔhyew a ɛkorɔn mu wɔ ngo ahorow a ɛyɛ den ne nnuru nsɛm ho amanneɛbɔ mu no da so ara tumi kura mfiridwuma su a ɛkyɛn so, ɔhyew a ɛkorɔn ne mfiridwuma mu su ahorow mu yɛ papa sen dodow no ara afoforo elastic ah nipadua, pa abrasion resistance Ɛdenam sɛnea ɛfata matching
Mfiridwuma a wɔaka abom, wubetumi anya ɔhyew a ɛkorɔn compression daa deformation adwumayɛ a ɛkyɛn so, na saa adwumayɛ yi a FKM yɛ no nyɛ papa saa.
(3) nnuru media a ɛko tia: HNBR wɔ ngo a ɛko tia yiye wɔ ɔhyew a ɛkorɔn mu, ɛko tia srade ahorow ahorow hydraulic oil, pɛtro ngo a ɛwɔ nneɛma ahorow a wɔde ka ho, ngo a ɛyɛ den a ɛyɛ corrosive oxidizing ne dade slag adwumayɛ, na ɛwɔ ozone a ɛko tia yiye, ɔhyew a ɛkorɔn radiation ne nsu a ɛyɛ hyew a ɛko tia.
Efi atifi hɔ su ahorow a ɛwɔ HNBR, sɛ wɔde toto FKM ho a, kan no adwumayɛ a eye sen biara wɔ ne nyinaa mu no, FKM, ɛwom sɛ wɔ ɔhyew a ɛko tia, ngo a ɛko tia, ɛko tia ngo a ɛhyew no ye sen HNBR, nanso HNBR wɔ adwumayɛ hyew mu a ɛyɛ mfiridwuma mu su a ɛwɔ nsuonwini a ɛko tia, ɛko tia ngo a wɔde ka ho, ɛko tia oxidation ne rancidity degradation a ngo no ne nnuru afoforo agyapade, te sɛ nea ɛkorɔn sen FKM. Bio nso, FKM a ɛwɔ adwinnan ne nwene nhyehyɛe mu esiane nsu a ɛnyɛ papa a ɛwɔ nneɛma no mu, nneɛma a wɔde yɛ adwuma ne nneɛma a wɔyɛ no adwumayɛ nti no ntumi nnyina, enti ne ka. Bio nso, FKM boɔ yɛ den wɔ nneɛma a wɔyɛ ne nwene mu ɛnam nneɛma a ɛnkɔ yie, nneɛma a wɔde yɛ adwuma a ɛntumi nnyina ne nneɛma a wɔyɛ no adwumayɛ nti, berɛ a HNBR boɔ nyɛ den sene FKM ɛnam nneɛma a wɔde yɛ ne ne yɛ pa, adwumayɛ a ɛgyina pintinn ne ne boɔ a ɛba fam.
HNBR dwumadie tebea ne ne dwumadie wɔ adansi mfiri mu nhwehwɛmu
Esiane sɛ HNBR yɛ adwuma yiye a ɛkɔ akyiri nti, wɔde adi dwuma kɛse wɔ nneɛma pii mu de asi FKM ananmu wɔ amannɔne aman mu: wɔde adi dwuma wɔ kar adwumayɛ mu de ayɛ kar krankshaft anim ne akyi ne gearbox ngo nsɔano, H-type shaft nsɔano, nsɔano a wɔde yɛ pɛtro injection nhyehyɛe, piston cylinder vibration damping seals, carburetor O-rings, ne nea ɛkeka ho; na wɔ dade adwumayɛ mu no, wɔde di dwuma wɔ dade a ɛkorɔn-line rolling mill aksel diameter afã abien nsɔano, ne nsɔano ma fan-shaped cylinders wɔ fie kɔ so tow afiri mu; na wɔ ngo adwumayɛbea no, wɔde yɛ nneɛma a wɔde tu fam, ne nsɔano a wɔde yɛ nneɛma a wɔde tu fam. Wɔ oilfield adwumayɛ mu no, wɔde yɛ seal of drill bit protector ma drilling wellhead sealing, oil plug pump sealing, ne nea ɛkeka ho.
Wɔ loaders ne adansi mfiri afoforo ho no, ne hydraulic transmission components te sɛ gearboxes, torque converter mu normal operating temperature theoretically 8O-90 °C , nea ɛkorɔn sen biara no ntra 120 °C , nanso te sɛ nnɔnhwerew tenten adwuma a ɛboro so. Ɛkɔ anaa mpo ɛboro 130 °C mu kyinhyia a ɛyɛ hyew kɛse nsu a ɛsɛe na ɛsɛe bere kɔ so, bere a afã horow a dade slag (meshing kankyee dade afã horow ne bere a adwuma nhyehyɛe a dade shavings hwe ase wɔ adwumayɛ ade no mu) wɔ ɔhyew a ɛkorɔn mu hyew ngo a nsɔano no de ba esiane nkɛntɛnso a nsɔano no de ba no mu, na ɛnam so ka nsɔano no nkwa nna.
Enti, wobetumi de HNBR adi dwuma wɔ ɔhyew a ɛkorɔn ahoɔden, ɔhyew a ɛba fam a ɛko tia, ɔhyew a ɛkorɔn compression daa deformation, oxidation ne acid sɛe ngo ne dade sludge adwumayɛ ne afã afoforo bo a mfaso a wɔada no adi, ne nea wɔde besi mprempren FKM nsɔano, abien no nyinaa ma nkɔso nkwa nna a nsɔano, nanso nso tew mpɛn dodow a wɔsesa adwumayɛ medium na ɔhyew a ɛkɔ soro a ɛko tia FKM no sua dodo kɛse. Wɔ adansi mfiri adwumayɛ mfiri hydraulic nhyehyɛe, nhyehyɛe no adwumayɛ nhyɛso yɛ mpɛn pii no 16MPa (yɛ nhyɛso kɛse nhyehyɛe), adwumayɛ medium (HM46 anaa HM32 hydraulic ngo) a daa adwumayɛ ɔhyew a ɛyɛ 45-55 °C , esiane adwumayɛ tebea a mfiri no yɛ papa, a ɛka ho ne adwumayɛ a ɛmfata a ɔde di dwuma no ne sɛnea wɔhwehwɛ sikasɛm mu mfaso horow a ɛboro so, yɛ prone to make the hydraulic system flow oil temperature Ɛboro anohyeto yi so, na ɛnam so ma hydraulic oil no sɛe.
Afei nso, nea wɔahyehyɛ no hydraulic nhyehyɛe no afã horow a ahoɔhare kɛse rotary kankyee (hydraulic pump) ne mpɛn pii reciprocating sliding (hydraulic cylinder piston poma ne multi-way reversing valve valve stem) nso ma dade slag ne ngo sɛe, nsɔano no nso de ba esiane nkɛntɛnso a friction, nhyehyɛe no huammɔdi afoforo a ɛde ba esiane nhyɛso so tew ne mpo mpofirim hwere, yɛ nsɔano no nya nkɛntɛnso bɔne wɔ mprempren NBR adesuakuw nsɔano no so, esiane ne ahoɔden a ɛtwetwe ne nea ɛko tia sɛe a ɛwɔ ngo no mu nti Wɔ NBR nsɔano a ɛwɔ hɔ dedaw no fam no, esiane ne tumi a ɛtwetwe ne nea ɛko tia ngo a ɛsɛe na ɛnyɛ den yiye sɛ wobedi nkogu nti, esiane ahoɔden a ɛwɔ HNBR mu nti, ahoɔden a ɛsan nya yiye, wɔ ɔfã bi mu no, nhyɛso a ɛyera mpofirim wɔ nsɔano no adwumayɛ so no nni nkɛntɛnso kɛse biara, enti wɔ hydraulic nhyehyɛe a cylinders, pumps, valves, ne hydraulic nneɛma afoforo wɔ HNBR nsɔano a wɔde di dwuma no betumi ama nsɔano nkɛntɛnso ne ɔsom nkwa nna atu mpɔn kɛse.
