Michini yo aka hydraulic transmission system eka swiphemu leswikulu swofana na gearbox torque converter (leyi vuriwaka double change) na work unit hydraulic system eka multi-way reversing valve na O-ring na swin’wana swisirhelelo, vunyingi bya swona switirhisiwile fluorine rubber (FKM) ku pfalela swilo leswi swina ku tiya ka kahle ka oyili, ku lwisana na abrasion xikan’we naku lwisana na mahiselo yale henhla na swin’wana, leswaku swita sivela ku vupfa ka sisiteme, ku antswisa ku tiya ka sisiteme swi fikelerile mbuyelo wo karhi. Kambe hikokwalaho ka vukona bya ti seals totani, nxavo wale henhla, ku lwisana kahle na rancidity ku onhaka ka oyili, ku lwisana na xirhami na swin’wana swo biha, leswi endlaka leswaku ntsengo wa xiendliwa wu tlakuka, naswona swi khumba ku xavisiwa ka xiendliwa, hikokwalaho swa laveka ku kuma xitirhisiwa xo pfalela lexi nga durhiki no tiya ematshan’wini ya xitirhisiwa xo pfalela lexi nga kona.
HNBR na Swihlawulekisi swa Yona
HNBR i muxaka wuntshwa wa elastomer leyi nga ngheniwiki hi oyili leyi nghenisiweke hi Nippon Zeon hi 1984, leyi endleriweke ku fikelela xilaveko xa xihatla xa switirhisiwa swa rhaba ehansi ka swiyimo swo tika eka bindzu ra timovha. I ku tiya ka kahle swinene ka oyili ya nitrile rubber (vito ra khodi NBR) xivumbeko xa molekhuli ya carbon-carbon double bond selectively hydrogenated (saturated) processing ya xivumbeko xa molecular xa ku cinca, ku cinca NBR ku lwisana na ku hisa, maroon ku tiya ka tikhemikhali ta ku tsana ka swisiwana, na matimba ya kahle swinene na ku lwisana na mahiselo yale henhla na yale hansi, ku lwisana na oyili na ti khemikhali swihangalasamahungu swofana naku tiya eka matirhelo yo hlamarisa, yo hlawuleka na ku ringanisela swinene. Hi nkarhi lowu fanaka yi hlayisa ku tiya ka kahle swinene ka ku ambala na ku lulamisiwa ka NBR. Loko ku pimanisiwa na FKM na NBR
Swihlawulekisi leswikulu swa matirhelo ya HNBR hi leswi landzelaka:
(1) Ku cinca cinca ka mahiselo: HNBR yinga tirhisiwa nkarhi woleha eka l50 °C , kutirhisiwa ka nkarhi wo koma ka mahiselo kuya fika eka l75 °C.
HNBR, yinga tirhisiwa nkarhi woleha eka 230 °C , kutirhisiwa ka nkarhi wo koma ka mahiselo kuya fika eka 300 °C . Ku tiya ka kuhisa ka HNBR exikarhi ka NBR na FKM, kambe hi mayelana na ku tiya ka mahiselo yale hansi, ku tiya ka FKM eka xirhami aswi kahle (-15 °C leswi olovaka ku brittle fracture); naswona HNBR yina matirhelo ya kahle swinene ya mahiselo yale hansi, na ku ringanisela lokunene exikarhi ka ku tiya ka oyili
(2) Physical and mechanical properties: most oil-resistant rubber due to low tensile strength, so it limits the scope of its application, such as FKM tensile strength of 19.6-21.6MPa, HNBR strength than NBR, ACMXNBR, EPDM and FKM and other types of rubber are higher, such as Zeon ZSC hydrogenated nitrile butadiene matimba ya rhaba ya tensile kuya fika eka 6OMPa xa nkoka swinene, HNBR eka mahiselo yale henhla ( Xa nkoka swinene, HNBR eka mahiselo yale henhla ( 15O °C ) ehansi ka matimba ( 14.7-29.4MPa ) na mahiselo ya kamara NBR ku hlayisa levele leyi fanaka eka mahiselo yale henhla eka mafurha yohambana hambana yo rharhangana na ti khemikhali ta tikhemikhali ta ha swikota ku hlayisa swivumbeko swa kahle swinene swa michini, mahiselo yale henhla na swivumbeko swa michini swi antswa ku tlula vunyingi bya miri wun’wana wa elastic ah, ku lwisana lokunene ka abrasion Hi ku fambisana loku faneleke
Ku hlanganisiwa ka thekinoloji, unga kuma matirhelo ya kahle swinene ya high-temperature compression permanent deformation performance, naswona matirhelo lawa ya FKM aya kahle ngopfu.
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Kusuka eka swihlawulekisi leswinga laha henhla swa HNBR, loko ku pimanyisiwa na FKM, khale ka matirhelo yo antswa hiku angarhela, FKM, hambi leswi eka ku tiya ka kuhisa, ku tiya ka oyili, ku lwisana na oyili yo hisa swikahle kutlula HNBR, kambe HNBR eka mahiselo yo tirha ya swivumbeko swa michini swa ku lwisana na steam, ku lwisana na swiengeteri swa oyili, ku lwisana na oxidation na ku onhaka ka rancidity ka oyili na tikhemikhali tin’wana swivumbeko, swo tanihi leswi tlakukeke ku tlula FKM. Ku engetela kwalano, FKM eka maendlelo ya vumaki na ku vumba hikokwalaho ka ku khuluka lokunga kahle ka switirhisiwa, switirhisiwa swoka swinga lulamisiwanga na matirhelo ya swihumelerisiwa aswi tshamisekangi, hikokwalaho ntsengo wa yona. Ku engetela kwalano, FKM yi durha swinene eka maendlelo ya vumaki naku vumba hikokwalaho ka ku khuluka ka switirhisiwa leswinga tshamisekangiki, switirhisiwa swoka swinga tshamisekangi na matirhelo ya swihumelerisiwa, kasi HNBR ayi durhi ngopfu kutlula FKM hikokwalaho ka ku vumbiwa naku lulamisiwa ka kahle ka switirhisiwa, matirhelo yo tiya xikan’we na nxavo wale hansi.
Xiyimo xa xikombelo xa HNBR na nxopaxopo wa ku tirhisiwa ka yona eka michini yo aka
Hikwalaho ka matirhelo ya kahle swinene yo angarhela ya HNBR, yi tirhisiwile ngopfu eka swiyenge swo tala ku siva FKM ematikweni mambe: yi tirhisiwile eka indasitiri ya mimovha ku endla swisirhelelo swa oyili swa crankshaft ya movha emahlweni na le ndzhaku na gearbox, swisirhelelo swa shaft swa muxaka wa H, swisirhelelo swa sisiteme yo chela mafurha, swisirhelelo swa piston cylinder vibration damping, carburetor O-rings, na swin’wana na swin’wana; naswona eka indasitiri ya nsimbi, yi tirhisiwa eka ku endla swisirhelelo swa matlhelo mambirhi swa dyayimeta ya axle ya xigayi xa le henhla xa nsimbi, na swisirhelelo swa tisilinda ta xivumbeko xa fan eka muchini wa le kaya wo hoxa lowu yaka emahlweni; naswona eka bindzu ra oyili, yi tirhisiwa eka ku endla switirhisiwa swo bora, na swisirhelelo swa switirhisiwa swo bora. Eka bindzu ra ndzhawu ya oyili, titirhisiwa ku endla seal ya drill bit protector ya drilling wellhead sealing, oil plug pump sealing, na swin’wana.
Eka ti loaders na michini yin’wana yo aka, swiphemu swa yona swa hydraulic transmission swofana na ti gearboxes, torque converter internal normal operating temperature theoretically 8O-90 °C , yale henhla ayi hundzi 120 °C , kambe kufana na tiawara to leha ta ntirho lowu rhwalekaka ngopfu. Kufika kumbe hambi kuri kutlula 130 °C ya xirhendzevutani xale ndzeni xa ku onhaka ka mati ya mahiselo yale henhla xikan’we naku onhaka hiku famba ka nkarhi, kasi swiphemu swa slag ya nsimbi (ku famba ka meshing ka swiphemu swa nsimbi na nkarhi wa maendlelo ya ntirho ya swirhendzevutani swa nsimbi leswi welaka eka xitirhisiwa xo tirha) eka mafurha yo hisa ya mahiselo yale henhla lawa ya fambiwaka hi swisirhelelo leswi vangiwaka hiku khumbeka ka swisirhelelo, hindlela yaleyo swi khumba vutomi bya ntirho wa swisirhelelo.
Hikokwalaho, HNBR yinga tirhisiwa eka matimba ya mahiselo yale henhla, ku tiya ka mahiselo yale hansi, ku tshikileriwa ka mahiselo yale henhla ya ku onhaka ka nkarhi hinkwawo, oxidation na ku onhiwa ka acid ya matirhelo ya oyili na ndzhope wa nsimbi na swiyenge swin’wana swa nxavo wa swipfuno leswi kombisiweke, hi ku siviwa ka yona ka xisirhelelo xa sweswi xa FKM, hinkwaswo ku antswisa vutomi bya vutirheli bya swisirhelelo, kambe switlhela swihunguta nhlayo ya ku cinciwa ka xitirhisiwa xo tirha; naswona ku tiya ka mahiselo yale henhla ya FKM swintsongo swinene. Eka michini yo aka yo tirha xitirhisiwa xa hayidiroliki sisiteme, sisiteme yo tirha ntshikelelo hi ntolovelo i 16MPa (i sisiteme ya ntshikelelo wa le henhla), xitirhisiwa xo tirha (HM46 kumbe HM32 oyili ya hayidiroliki) ya mahiselo ya ntolovelo yo tirha ya 45-55 °C , hikwalaho ka swiyimo swo tirha swa xitirhisiwa a swi nga ri kahle, swi hlanganisiwa na matirhelo lama nga fanelangiki ya mutirhisi xikan’we na ku hlongorisa mimbuyelo ya ikhonomi ya ku rhwala ku tlula mpimo, i prone to make the hydraulic system flow oil temperature Ku tlula mpimo lowu, xisweswo swi vanga ku onhaka ka oyili ya hayidiroliki.
Ku engetela kwalaho, xivumbeko xa swiphemu swa sisiteme ya hayidiroliki swa ku famba-famba loku rhendzelekaka hi rivilo lerikulu (pompo ya hayidiroliki) ni ku rhetela loku tshamelaka ku tlhelela endzhaku (nhonga ya piston ya silindara ya hayidiroliki ni nsinya wa valve yo tlhelela endzhaku ka tindlela to tala) swi tlhela swi humesa xirhendzevutana xa nsimbi ni ku onhaka ka oyili, swisirhelelo na swona swi vangiwa hi ku khumbeka ka ku hlangana, ku tsandzeka kun’wana ka sisiteme loku vangiwaka hi ku hunguteka ka ntshikelelo hambi ku ri ku lahlekeriwa hi xitshuketa ka ntshikelelo, i swisirhelelo swi na nkucetelo wo biha eka swisirhelelo swa sweswi swa ntlawa wa NBR, hikwalaho ka matimba ya swona yo tsana na ku lwisana na ku onhaka ka swivumbeko swa oyili Eka swisirhelelo swa NBR leswi nga kona, hikwalaho ka matimba ya swona yo tsana na ku lwisana na ku onhaka ka oyili naswona swi olova swinene ku tsandzeka, hikwalaho ka matimba ya HNBR, ku vuyelela lokunene, eka xiphemu xa ku lahlekeriwa hi xitshuketa ka ntshikelelo eka matirhelo ya swisirhelelo swi na nkucetelo wutsongo, hikwalaho eka sisiteme ya hayidiroliki ya tisilinda, tipompo, tivalvu, na swiphemu swin’wana swa hayidiroliki eka ku tirhisiwa ka swisirhelelo swa HNBR swi nga antswisa swinene mbuyelo wo pfalela na vutomi bya vukorhokeri.
