Sistimi ea phetisetso ea mochini oa hydraulic ka har'a likarolo tse kholo tse joalo ka 'gearbox torque converter' (e bitsoang phetoho e habeli) le sesebelisoa sa hydraulic hydraulic system ka har'a li-valve tsa ho khutlisa tse nang le O-ring le litiiso tse ling, boholo ba tsona li sebelisitsoe rabara ea fluorine (FKM) bakeng sa ho tiisa thepa e na le khanyetso e ntle ea oli, khanyetso ea abrasion le ho thibela ho hanyetsa mocheso le ho thibela mocheso ho fihlela mocheso o phahameng. ho tšoarella ho fihletse phello e itseng. Leha ho le joalo, ka lebaka la ho ba teng ha litiiso tse joalo, theko e phahameng, ho hanyetsa ho futsaneha ha oli ea rancidity, ho hanyetsa serame le lintlha tse ling tse mpe, ho etsa hore theko ea sehlahisoa e eketsehe, 'me e ama thekiso ea sehlahisoa, kahoo ho hlokahala hore u fumane thepa ea ho tiisa moruo le e tšoarellang ho e-na le thepa ea ho tiisa e teng.
HNBR le Thepa ea eona
HNBR ke mofuta o mocha oa elastomer e hananang le oli e hlahisitsoeng ke Nippon Zeon ka 1984, e ileng ea ntlafatsoa ho fihlela tlhoko e potlakileng ea ho kenya rabara tlas'a maemo a thata indastering ea likoloi. Ke khanyetso e ntle ea oli ea rabara ea nitrile (code name NBR) sebopeho sa limolek'hule tsa carbon-carbon double bond selectively hydrogenated (saturated) process ea sebopeho sa limolek'hule tsa phetoho, ho fetola botsitso ba lik'hemik'hale tsa NBR tse sa keneleng mocheso, maroon lik'hemik'hale tsa bofokoli ba mafutsana, ka matla a maholo le ho hanyetsa mocheso o phahameng le o tlase, ho hanyetsa oli le mecha ea litaba ea lik'hemik'hale, joalo ka ho hanyetsa le ts'ebetso e ikhethang haholo. Ka nako e ts'oanang e boloka khanyetso e ntle ea ho roala le ts'ebetso ea NBR. Ha e bapisoa le FKM le NBR
Litšobotsi tsa mantlha tsa ts'ebetso ea HNBR ke tse latelang:
(1) Ho ikamahanya le maemo a mocheso: HNBR e ka sebelisoa nako e telele ho l50 ℃ , tšebeliso ea nako e khuts'oane ea mocheso ho fihlela l75 ℃.
HNBR, e ka sebelisoa nako e telele ho 230 ℃ , tšebeliso ea nako e khuts'oane ea mocheso ho fihlela ho 300 ℃ . Ho hanyetsa mocheso oa HNBR pakeng tsa NBR le FKM, empa ho latela mocheso o tlase oa mocheso, ho hanyetsa serame sa FKM ho fokola (-15 ℃ ho bonolo ho robeha); mme HNBR e na le ts'ebetso e ntle haholo ea mocheso o tlase, e nang le botsitso bo botle lipakeng tsa ho hanyetsa oli
(2) Thepa ea 'mele le ea mochini: rabara e hananang le oli e ngata ka lebaka la matla a tlase, kahoo e fokotsa boholo ba ts'ebeliso ea eona, joalo ka FKM tensile matla a 19.6-21.6MPa, matla a HNBR ho feta NBR, ACMXNBR, EPDM le FKM le mefuta e meng ea rabara e phahameng, joalo ka hydrogendiene nitrile tensile ZSC. Habohlokoa le ho feta, HNBR ka mocheso o phahameng (Habohlokoa le ho feta, HNBR ka mocheso o phahameng (15O ℃ ) tlas'a matla (14.7-29.4MPa) le mocheso oa kamore NBR ho boloka boemo bo tšoanang ka mocheso o phahameng ka mefuta e sa tšoaneng ea oli e rarahaneng le mecha ea litaba ea lik'hemik'hale e ntse e ka boloka thepa e babatsehang ea mechine, mocheso o phahameng oa 'mele le oa mochine ka thepa e ntle ea matching e molemo ho feta mefuta e mengata ea ho hanyetsa.
Motsoako oa mahlale a morao-rao, o ka fumana ts'ebetso e ntle ea khatello e phahameng ea mocheso o phahameng, 'me ts'ebetso ena ea FKM ha e ntle joalo.
(3) lik'hemik'hale mecha ea phatlalatso ea khanyetso: HNBR e na le khanyetso e ntle ea oli ka mocheso o phahameng, ho hanyetsa mefuta e mengata ea litlolo tsa oli ea hydraulic, oli ea mafura e nang le mefuta e mengata ea li-additives, oli e matla e senyang oxidizing le ts'ebetso ea tšepe ea slag, 'me e na le khanyetso e ntle ea ozone, mocheso o phahameng oa mahlaseli a kotsi le ho hanyetsa metsi a chesang.
Ho tsoa ho litšoaneleho tse ka holimo tsa HNBR, ha li bapisoa le FKM, ts'ebetso ea pele e ntle ka kakaretso, FKM, le hoja ho hanyetsa mocheso, ho hanyetsa oli, ho hanyetsa oli ea mollo ho molemo ho feta HNBR, empa HNBR ka mocheso o sebetsang oa thepa ea mochine oa ho hanyetsa mouoane, ho hanyetsa li-additives, ho hanyetsa oxidation le ho senyeha ha rancidity ea oli le lisebelisoa tse ling tsa lik'hemik'hale tse kang FK. Ntle le moo, FKM ts'ebetsong ea ho etsa le ho bopa ka lebaka la mokelikeli o mobe oa thepa, lisebelisoa tse tala le ts'ebetso ea sehlahisoa ha e tsitsa, kahoo litšenyehelo tsa eona. Ho phaella moo, FKM e theko e boima haholo ha ho etsoa tlhahiso le ho bōptjoa ka lebaka la phallo e mpe ea thepa, thepa e tala e sa tsitsang le ts'ebetso ea lihlahisoa, ha HNBR e theko e tlaase ho feta FKM ka lebaka la ho bopa le ho sebetsa hantle, ts'ebetso e tsitsitseng le theko e tlaase.
Boemo ba ts'ebeliso ea HNBR le tlhahlobo ea ts'ebeliso ea eona mochining oa kaho
Ka lebaka la ts'ebetso e phethahetseng e felletseng ea HNBR, e se e sebelisoa haholo likarolong tse ngata ho nkela FKM sebaka linaheng tse ling: e sebelisitsoe indastering ea likoloi ho etsa litiiso tsa oli tsa crankshaft tse ka pele le tse ka morao le tsa gearbox, litiiso tsa mofuta oa H, litiiso tsa sistimi ea ente ea mafura, piston cylinder vibration damping seals, carburing, jj. le indastering ea metallurgical, e sebelisoa ha ho etsoa metallurgy high-line rolling mill axle diameter double-sided seals, le litiiso tsa lisilindara tse bōpehileng joaloka fene mochining o tsoelang pele oa lapeng; 'me indastering ea sebaka sa oli, e sebelisoa ho etsa lisebelisoa tsa ho cheka, le liqibi tsa ho cheka. Ka indasteri ea oli, li sebelisoa ho etsa tiiso ea 'drill bit protector' bakeng sa ho cheka hantle, ho tiisa pompo ea oli, joalo-joalo.
Bakeng sa li-loaders le mechini e meng ea kaho, likarolo tsa eona tsa phetisetso ea haeteroliki joalo ka li-gearbox, torque converter ka hare ho mocheso o tloaelehileng oa ts'ebetso ka theory 8O-90 ℃ , e phahameng ka ho fetisisa ha e fete 120 ℃ , empa joalo ka lihora tse telele tsa mosebetsi o imetsoeng. Ho fihlela kapa ho feta 130 ℃ potoloho ea ka hare ea mocheso o phahameng oa mocheso le ho senyeha ha nako e telele, ha likarolo tsa slag ea tšepe (meshing motsamao oa likarolo tsa tšepe le nako ea ts'ebetso ea ts'ebetso ea litšepe tse oelang sebakeng sa ho sebetsa) ka oli e chesang e phahameng ea mocheso e tsamaisoang ke litiiso tse bakoang ke ts'usumetso ea lits'ebeletso tsa litiiso.
Ka hona, HNBR e ka sebelisoa ka matla a mocheso o phahameng, ho hanyetsa mocheso o tlase, ho hanyetsa mocheso o phahameng oa mocheso o sa feleng, oxidation le ho senyeha ha acid ea oli le ts'ebetso ea tšepe ea tšepe le likarolo tse ling tsa theko ea melemo e bontšitsoeng, ka ho nkela sebaka sa tiiso ea hona joale ea FKM, ka bobeli ho ntlafatsa bophelo ba tšebeletso ea litiiso, empa hape le ho fokotsa makhetlo a mangata a ho fetola sebaka sa ho sebetsa; mme khanyetso e phahameng ea mocheso ea FKM e nyane haholo. Bakeng sa mochini o sebetsang oa mochini o sebetsang oa hydraulic system, khatello ea ts'ebetso ea sistimi ka kakaretso ke 16MPa (ke sistimi e nang le khatello e phahameng), sebaka sa ho sebetsa (HM46 kapa HM32 hydraulic oli) ea mocheso o tloaelehileng oa 45-55 ℃ , ka lebaka la maemo a ts'ebetso ea sesebelisoa a fokola, hammoho le ts'ebetso e sa nepahalang ea mosebelisi, hammoho le molemong oa ho kenya letsoho molemong oa moruo. mocheso oa oli o phallang Ho feta moeli ona, kahoo o baka ho senyeha ha oli ea hydraulic.
Ntle le moo, sebopeho sa likarolo tsa sistimi ea hydraulic system ea lebelo le phahameng (pompo ea hydraulic) le ho thellela khafetsa (hydraulic cylinder piston rod le multi-way reversing valve valve stem) le tsona li hlahisa slag ea tšepe le ho senyeha ha oli, litiiso le tsona li bakiloeng ke tšusumetso ea likhohlano, khatello ea khatello e bakiloeng ke ho fokotseha ho hoholo ha sistimi le ho fokotseha ho hoholo. ho litiiso tsa hona joale tsa sehlopha sa NBR, ka lebaka la matla a eona a tsitsitseng le ho hanyetsa ho senyeha ha thepa ea oli Bakeng sa litiiso tse teng tsa NBR, ka lebaka la matla a eona a tsitsitseng le ho hanyetsa ho senyeha ha oli, 'me ho bonolo haholo ho hlōleha, ka lebaka la matla a HNBR, ho hlaphoheloa hantle, karolo ea tahlehelo ea tšohanyetso ea khatello ea ts'ebetso ea litiiso ha e na tšusumetso e fokolang, kahoo tsamaisong ea hydraulic, hydraulic system, li-valve tsa li-hydraulic, li-valve le lisebelisoa tse ling tsa li-hydraulic Litiiso tsa HNBR li ka ntlafatsa haholo phello ea ho tiisa le bophelo ba ts'ebeletso.
