Li-alloy bushings li rarolla mathata a sebele a ho apara le ho se tsamaisane hantle-ha li entsoe ka nepo. Re bone likopano tsa pompo ea hydraulic li hloleha kamora lihora tse 4,200 tsa ts'ebetso hobane lihlahla tse tloaelehileng tsa boronse li holofetse tlas'a cyclic radial load. Re fetotse matsoho a tataiso ea tšepe e senyehileng ka har'a li-winch center shafts ka tloaelo alloy bushing kenya-le bophelo bo atolositsoeng ba tšebeletso ka 3,7 ×. Sena ha se khopolo-taba. Ke metallurgy e netefalitsoeng tšimong e sebelisoang ho geometry e sebetsang.
Hobaneng ha Bushings e Tloaelehileng e Fana ka Tlas'a Meroalo ea Liindasteri
Liphoso tse ngata li khutlela mehopolong e meraro e sa lumellaneng: mojaro oo o tsitsitse, mocheso o lula o sa fetohe, 'me ho kopana ha bokaholimo ho lula ho tšoana. Ha e le hantle, matlo a pompo ea piston a bona likhatello tsa khatello ka holimo ho 450 bar ha mocheso oa oli o fetoha ho tloha 35 ° C ho ea 110 ° C nakong ea mosebetsi. Lekhalo leo la katoloso ea mocheso? Ke moo tlhophiso e fosahetseng e qalang teng. Lihlahla tsa bronze li nolofala hoo e ka bang 150 ° C. Ts'epe-ka-tšepe e kopanya nyooko ntle le li-coefficients tse laoloang tsa likhohlano. 'Me tšepe e entsoeng ka tšepe ha e na botsitso ba microstructural e hlokahalang bakeng sa mamello ea sub-0.015 mm runout likopanong tse potolohang ka lebelo le phahameng.
Re ile ra latela mefokolo ea masimo a 68 ho pholletsa le litsamaiso tsa hydraulic tsa likoloi tsa boenjiniere nakong ea likhoeli tse 18. 73% e kenyelelitse ho fumana lintlha pele ho nako likoranteng tsa shaft - e sa bakoeng ke tšilafalo, empa ke ho tsukutleha ha likhohlano tlas'a khatello e tsitsitseng ea 120 MPa. Motso oa sesosa e ne e se litšila. E ne e le lihlahisoa tse bonahalang.
Lisebelisoa tsa Alloy Bushing: Ho Bapisa Chemistry le Mosebetsi
Ha se lihlahla tsohle tsa alloy tse sebetsang ka ho lekana. Li-alloys tsa Cobalt-nickel tse kang AMS 5387 li fana ka boima bo ka holimo ho 45 HRC le katoloso ea mocheso e haufi le zero ka tlase ho 500 ° C. Limaraka tsa T800 tse thehiloeng ho cobalt li boloka matla a hatellang ka holimo ho 1,100 MPa ho 600 ° C-a bohlokoa bakeng sa li-nozzles tsa pompo tse tlaase tse pepesehileng khase e bolila le lehlabathe le hlabang. Litšepe tse nang le 3.2% chromium le 1.8% molybdenum li hanela ho tsofala ho feta tšepe e bohlooho-empa feela ha mocheso o kenngoa ho 28-32 HRC le ho qeta fatše ho Ra ≤0.4 μm.
Mona ke se sebetsang-le hobaneng:
- Cobalt-nickel (AMS 5387): Molemo ka ho fetisisa bakeng sa meroalo e oscillating >100 kN le mocheso >400°C. E boloka botsitso ba dimensional ka hare ho ± 0.002 mm ho feta 10,000 cycles.
- T800 cobalt motsoako: E nepahetse bakeng sa likhokahano tse sa tlotsoang kapa tse tlositsoeng hanyane. Coefficient of friction e lula ka tlase ho 0.28 le kamora lihora tse 500 ho omella.
- Chromium-molybdenum tšepe e entsoeng ka tšepe: E boloka litšenyehelo bakeng sa li-valve tsa khatello e mahareng moo lebelo la bokaholimo le lulang ka tlase ho 1.2 m/s le mocheso o lulang o le ka tlase ho 120°C.
U sebelisa alloy ea cobalt ntlong ea gearmotor e boima bo tlase? Ho feta tekano—le ho bitsa chelete e ngata. U sebelisa tšepe e entsoeng ka tšepe motheong oa pompo ea kantle ho naha? Spalling e netefalitsoeng nakong ea likhoeli tse 18. Khetho ea thepa ha e amane le lintlha. E mabapi le maemo a moeli.
Moralo le Tlhahiso: Moo ho nepahetseng ho fetohang ts'ebetso
Khemistri e phethahetseng ea alloy ha e bolele letho ntle le geometry e nepahetseng. Re sebelisa lihlahla tsa cobalt alloy bushings litsing tsa CNC tsa 5-axis tse nang le bore ea ka hare e fetotsoeng ka daemane-ho fihlela ho pota-pota ≤0.003 mm le ho qeta holimo Ra 0.2 μm. Ke hobane’ng ha hoo ho le bohlokoa? Hobane boemo ba 0.008 mm ka ntle ho pota bo eketsa khatello ea maikutlo ea sebakeng sa heno ka 47% sebakeng se phahameng. Ke moo microcracks nucleate.
Ts'ebetso ea rona e kopanya ho lahla le ho sebetsa ka boomo. Bakeng sa matlo a lisilindara tsa pompo ea piston, re lahlela khetla e ka ntle ka tšepe ea ductile (ASTM A), ebe re tobetsa-ho kenya mochini oa cobalt alloy liner. Tšitiso e lekantsoeng e hatella liner radially-ho theha thepa e kentsoeng ka hare e thibelang khatello ea maikutlo ea ts'ebetso. Ha ho likhomaretsi. Ha ho na shrink fits. Feela metallurgical synergy.
Sehlopha se seng le se seng se na le ts'ebetso e felletseng: li-cert tsa thepa e tala, likutu tsa ho futhumatsa mocheso, litlaleho tsa CMM ka ASME Y14.5, le tlhahlobo ea ho qetela ea ts'ebetso ka khatello e lekantsoeng le lebelo. Haeba bushing e potoloha ka 1,800 rpm ka hare ho winch center shaft, re e hlahloba ka 2,200 rpm metsotso e 30 pele re romelloa.
Nako ea ho Hlalosa Alloy Bushing-Le Ha U sa Loke
Khetha lihlahla tsa alloy ha e 'ngoe ea tsona e sebetsa:
- Ho kheloha ha shaft ho feta 0.025 mm tlas'a mojaro o moholo
- Mocheso o sebetsang o fetoha ho feta 60 ° C nakong ea potoloho e tloaelehileng ea mosebetsi
- Lebelo la bokaholimo le feta 1.5 m/s le lubrication ea nakoana
- Karolo e hloka setifikeiti sa ASME B16.34 kapa API 6A
Se ke oa li hlakisa bakeng sa lits'ebetso tse sa fetoheng, tse boima bo tlase joalo ka li-pivots tsa phanele ea lisebelisoa kapa li-valve tsa letsoho. Khomarela ka boronse ea phosphor moo. Boloka ts'ebetso ea alloy bakeng sa moo e leng bohlokoa: li-valve tsa khatello li palama libaesekele makhetlo a 12 ka motsotso, metheo ea pompo e tšehetsang boima ba lithane tse 8, kapa li-winch shafts tse mamellang ho bola ha letsoai-spray le ho ts'oaroa ha letsoalo.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. e haha lisebelisoa tsena-eseng e le lintho tsa lethathamo la libuka, empa e le li-interfaces tsa bohlokoa tsa tsamaiso. Re netefatsa li-callouts tsa GD&T pele re seha tšepe. Re tšoaea li-angles tse thibelang moea nakong ea ho lahla. Re leka ntho e 'ngoe le e 'ngoe alloy bushing khahlanong le thepa ea hau ea sebele ea shaft-eseng tšepe e tloaelehileng.
Ho sesa le ho ferekanngoa ha hoa qojoa. Ke matšoao a lisebelisoa tse sa lumellaneng, mamello e hlokomolohuoang, kapa likhokahano tse sa sebetseng. Li rarolle mohloling—eseng ka linako tsa tlhokomelo, empa ka litharollo tse entsoeng ka nepo. Ke ka tsela eo u tlohang sebakeng se sebetsang ho ea ho ts'ebetso e boletsoeng esale pele.
