Polyimides (PIs) ke sehlopha sa li-polymers tse sebetsang hantle tse tsebahalang ka botsitso ba tsona bo ikhethang ba mocheso, matla a mochini, le ho hanyetsa lik'hemik'hale, e leng se etsang hore e be tsa bohlokoa haholo lits'ebetsong tse boima joalo ka meaho ea mocheso oa sefofane. Lisebelisoa tsena, tse khetholloang ka li-link tsa li-imide mokokotlong oa tsona, li bonts'a thepa e tsotehang, ho kenyelletsa le mocheso o phahameng oa phetoho ea likhalase (Tg> 300 ° C), katoloso e tlaase ea mocheso, le ho hanyetsa libaka tse feteletseng, tse leng tsa bohlokoa bakeng sa likarolo tsa sefofane tse kang matlo a enjene, tšireletso ea mocheso, le likarolo tsa ho pata. Keketseho e ntseng e eketseha ea li-polyimides sebakeng sa sefofane e tsamaisoa ke bokhoni ba tsona ba ho nka sebaka sa lisebelisoa tse boima tsa tšepe le tsa ceramic, tse fanang ka poloko e kholo ea boima bo fokotsang litšenyehelo tsa ho qala le ho ntlafatsa ts'ebetso ea mafura. Ka mohlala, ho hakanngoa hore ho fokotsa boima ba lik'hilograma tse 1 tsa sepakapaka ho ka boloka pakeng tsa $5,000 le $30,000 ka litšenyehelo tsa ho qala, ho totobatsa melemo ea moruo le ea ts'ebetso ea polyimides.

Machining a Computer Numerical Control (CNC) a hlahile e le mokhoa oa bohlokoa oa tlhahiso bakeng sa ho bopa likarolo tse thehiloeng ho polyimide ka nepo e phahameng, haholo lits'ebetsong tsa sepakapaka moo ho mamellana ho tiileng le boleng bo holimo bo holimo li bohlokoa haholo. CNC lisebelisoa, e kenyeletsang lits'ebetso tse kang ho sila, ho reteleha, le ho seha ka mokhoa o nepahetseng ka ho fetisisa oa ho fofa, ho nolofalletsa ho etsoa ha li-geometri tse rarahaneng ka ho nepahala ha submicron. Leha ho le joalo, machining polyimides a hlahisa liphephetso tse ikhethang ka lebaka la boima ba tsona bo phahameng, botsitso ba mocheso, le kutloelo-bohloko ho li-parameter tsa machining, tse ka amang bots'epehi ba bokaholimo le ts'ebetso. Ho bohlokoa ho fumana boleng ba boleng bo holimo, kaha ho thatafala ha bokaholimo le bofokoli joalo ka li-burrs kapa li-microcracks li ka senya ts'ebetso ea mocheso le mochini oa likarolo tsa sefofane.

Sengoliloeng sena se fana ka tlhahlobo e felletseng ea mekhoa ea machining ea CNC bakeng sa li-polymers tse sebetsang hantle tse thehiloeng ho polyimide, tse shebaneng le ts'ebeliso ea tsona meahong ea mocheso oa sefofane. E hlahloba thepa ea thepa ea polyimides, mechanics ea CNC ts'ebetso ea machininges, le maano a ho laola boleng bo holimo. Phuputso e kopanya liphuputso tsa morao-rao tsa lipatlisiso, lintlha tsa liteko, le mehlala ea likhopolo-taba ho fana ka kutloisiso e qaqileng ea machining polyimides, e tšehetsoeng ke litafole tse bapisang tse totobatsang litekanyetso le liphello tsa bohlokoa. Puisano e hlophisitsoe ho sebetsana le mahlale a lintho tse bonahalang, mahlale a machining, metrics ea boleng bo holimo, le lits'ebetso tse sebetsang, ho fana ka pono e akaretsang bakeng sa bafuputsi, baenjiniere le litsebi tsa indasteri.

Thepa ea Lintho tsa Polyimide le Lisebelisoa tsa Aerospace

Litšobotsi tsa Lik'hemik'hale le Sebopeho

Li-polyimides ke li-polymers tse sebetsang hantle tse nang le li-imide linkages (-CO-N-CO-) mokokotlong oa tsona, hangata li kopantsoe le meaho e nkhang hamonate kapa ea heterocyclic, e fanang ka thepa e ikhethang ea mocheso le mochini. Sebopeho sa limolek'hule tsa polyimides, tse atisang ho etsoa ka polycondensation ea dianhydrides le diamine, e fella ka matla a matla a li-intermolecular le matla a matla a tlamahano, a tlatsetsang ho hanyetsa ha bona ho senyeha ha mocheso le tlhaselo ea lik'hemik'hale. Li-polyimides tse tloaelehileng, joalo ka DuPont's Vespel SP-1 le PMR-15 ea NASA, li bonts'a mocheso oa phetoho oa likhalase ho tloha ho 300 ° C ho ea ho 400 ° C, ka mocheso oa ho bola o pakeng tsa 500 ° C le 600 ° C. Ho kenyeletsoa ha lihlopha tse feto-fetohang (mohlala, -O-) kapa li-alicyclics li ntlafatsa ho qhibiliha empa li ka senya thepa ea mocheso le ea mechine, ho hloka hore moralo o hlokolosi oa limolek'hule ho leka-lekanya litšobotsi tsa tshebetso.

Li-polyimides li fumaneha ka mefuta e fapaneng, ho kenyeletsoa lifilimi, likhoele, foam, le li-composite, e 'ngoe le e' ngoe e etselitsoe lits'ebetso tse ikhethileng. Bakeng sa meaho e futhumatsang ea sepakapaka, lifilimi tsa polyimide le likhomphutha li bohlokoa haholo bakeng sa boima ba tsona bo tlase (0.35–1.5 g/cm³), matla a phahameng a tsitsipano, le likhahla tse tlase tsa ho tsoa ha moea, tse thibelang tšilafalo libakeng tse se nang moea. Ho eketsoa ha li-nanofillers, tse kang carbon nanotubes (CNTs) kapa graphene oxide, ho tsoela pele ho ntlafatsa thepa ea mochine le ea mocheso, e leng se nolofalletsang nts'etsopele ea likarolo tse ngata tse sebetsang bakeng sa lisebelisoa tsa sefofane.

Thepa ea Bohlokoa bakeng sa Aerospace

Li-Polyimides li na le motsoako o ikhethang oa thepa e li etsang hore e be tse loketseng meaho e futhumatsang ea sefofane:

• Thermal botsitso: Polyimides e ka mamella mocheso o sa khaotseng ho feta 300 ° C, ka mefuta e meng e kang DMBZ-15 e sebetsang ho fihlela ho 335 ° C (635 ° F). Sena se li etsa hore li tšoanele likarolo tsa enjene, tšireletso ea mocheso, le meaho ea lifofa-sebakeng tse pepesehileng mochesong o feteletseng nakong ea ho qala le ho kena hape.

• Matla a Mechini: Polyimides e bonts'a matla a phahameng, modulus, le ho tiea, e ba nolofalletsang ho mamella khatello ea kelello moroalo-ho jara le ho se laole-ho jara likarolo.

• Khanyetso ea Lik'hemik'hale: Ho hanyetsa ha tsona ho li-acids, metheo, le lihlapolli ho tiisa hore li tšoarella libakeng tse senyang, tse kang tse kopanang le litsamaiso tsa moea oa sefofane.

• Khase e Tlase: Polyimide e na le likhahla tse tlase tsa ho tsoa, ​​tse bohlokoa bakeng sa ho thibela tšilafalo ea lisebelisoa tse hlokolosi tikolohong ea sebaka.

• Lisebelisoa tsa Dielectric: Ka dielectric constant 3.4-3.5, polyimides ke li-insulators tse babatsehang tsa motlakase, tse sebelisoang lipotolohong tse feto-fetohang le lihlopha tsa ho pata.

• Khanyetso ea Mahlaseli: Polyimides e hanela ho senyeha ho tloha mahlaseli a kotsi, e leng se etsang hore e tšoanelehe bakeng sa lisebelisoa tsa sebaka moo ho pepesehelang mahlaseli a leholimo ho amehang.

Lisebelisoa tsa Aerospace

Li-polyimides li bohlokoa ho meaho ea mocheso oa sefofane, ho kenyelletsa:

• Lisebelisoa tsa Enjene: Li-composite tsa polyimide, tse kang PMR-15 le DMBZ-15, li sebelisoa ka har'a masela a enjene, liphahlo tsa nozzle, le Bushings ka lebaka la bokhoni ba bona ba ho boloka thepa ea mechine ka mocheso o phahameng.

• Ho itšireletsa ka metsi: Polyimide foams le aerogels li fana ka tšireletso e bobebe, e thibelang lelakabe bakeng sa lifofane le sefofane, ka conductivity ea mocheso e tlase ho 0.029 W/mK.

• Metsoako ea Sebopeho: Li-composite tsa polyimide tse matlafalitsoeng ka carbon fiber li fana ka tekanyo e phahameng ea matla ho boima ba 'mele, e sebelisoang likarolong tse sa jereng mojaro joaloka li-tubes tsa vent le mekhoa ea ho sireletsa mocheso.

• Electronics tse tenyetsehang: Lifilimi tsa Polyimide li sebetsa e le li-substrates bakeng sa lipotoloho tse hatisitsoeng tse bonolo le li-sensor, li sebelisa thepa ea tsona ea dielectric le botsitso ba mocheso.

Bokhoni ba ho lokisa thepa ea polyimide ka moralo oa limolek'hule le matlafatso ea likarolo tse ngata bo atolositse lits'ebetso tsa bona, empa machina a bona e ntse e le ntlha ea bohlokoa ho fihlelleng ho nepahala ho hlokahalang bakeng sa likarolo tsa sefofane.

CNC Machining ea Polyimide

Kakaretso ea CNC Machining

CNC machining ke ts'ebetso ea tlhahiso e fokotsang e sebelisang lisebelisoa tse laoloang ke komporo ho tlosa lisebelisoa ho tsoa mosebetsing, ho fihlela li-geometri tse nepahetseng le liphetho tsa bokaholimo. Bakeng sa li-polyimides, mekhoa ea machining ea CNC joalo ka ho sila, ho reteleha, le ho seha ka mokhoa o nepahetseng haholo oa ho fofa ho sebelisoa ho etsa lisebelisoa tse nang le mamello e thata le boleng bo holimo. Ts'ebetso ena e kenyelletsa mekhahlelo e mengata, ho kenyelletsa khetho ea lisebelisoa, ho ntlafatsa paramethara, le ts'ebetso ea morao-rao, e 'ngoe le e' ngoe e susumetsang tšebetso ea karolo ea ho qetela.

Li-polyimides, leha li na le thepa e ntle haholo, li baka mathata ho machining a CNC ka lebaka la boima ba tsona bo phahameng, botsitso ba mocheso le tšekamelo ea ho hlahisa mocheso nakong ea ho itšeha. Lintlha tsena li ka lebisa ho roaeng ha lisebelisoa, bokooa ba holim'a metsi, le tšenyo ea mocheso haeba li sa laoloe hantle. Lithuto tsa morao-rao li tsepamisitse maikutlo ho ntlafatseng liparamente tsa machining le ho nts'etsapele mekhoa e tsoetseng pele joalo ka daemane ea ntlha e le 'ngoe (SPDT) le Ultra-precision fly-cutting (UPFC) ho ntlafatsa machina le boleng ba bokaholimo.

Mekhoa ea ho sebetsa

Mochine oa machining oa polyimides o kenyelletsa litšebelisano tse rarahaneng lipakeng tsa sesebelisoa sa ho itšeha, lisebelisoa tsa mosebetsi le tikoloho ea mochini. Lintlha tsa bohlokoa li kenyelletsa:

• Ho Tlosoa ha Lintho: Li-polyimides li atisa ho sebelisoa ho sebelisa mechine ea ho kuta kapa ea ductile, moo sesebelisoa se tlosang lintho tse bonahalang ka ho kuta kapa deformation ea polasetiki. Bongata bo phahameng le elastic modulus ea polyimides (nanoindentation hardness ~ 0.3–0.5 GPa, elastic modulus ~ 3–4 GPa) e hloka lisebelisoa tse bohale, tse tšoarellang joalo ka daemane kapa carbide ho fokotsa ho roala ha lisebelisoa le ho fumana maqeba a hloekileng.

• Liphello Tsa Mocheso: The thermal conductivity ea polyimides (0.029-0.35 W / mK) e baka mocheso oa mocheso ho sesebelisoa-workpiece interface, e ka 'nang ea lebisa ho nolofatsa mocheso kapa ho senyeha. Maano a ho pholisa, joalo ka ho itšeha ka mokhoa o omileng kapa lubrication e nyane, a bohlokoa ho laola tlhahiso ea mocheso.

• Botšepehi ba Bokahohle: Ts'ebetso ea machining e ka hlahisa liphoso tsa bokaholimo joalo ka li-burrs, li-microcracks, kapa likhatello tse setseng, tse amang ts'ebetso ea likarolo tsa sepakapaka. Khetho ea leano la ho itšeha (mohlala, ho hloa khahlano le ho itšeha ho tloaelehileng) le moralo oa tsela ea lisebelisoa li susumetsa haholo botšepehi ba bokaholimo.

CNC Machining Techniques bakeng sa Polyimides

Mekhoa e mengata ea machining ea CNC e sebelisoa bakeng sa polyimides, e 'ngoe le e' ngoe e loketse lits'ebetso tse ikhethileng le lijeometri:

• Single Point Diamond Turning (SPDT): SPDT e sebelisa sesebelisoa sa daemane se le seng sa kristale ho finyella boemo bo holimo ba nanometer-scale (Ra ~ 1-10 nm) le ho nepahala ha foromo ea submicron (PV <1 µm). E loketse lisebelisoa tsa optical le tse nepahetseng, tse kang lilense le liipone, tse sebelisoang ho li-sensor tsa aerospace.

• Ultra-Precision Fly-Cutting (UPFC): UPFC e kenyelletsa sesebelisoa se potolohang se sehang sesebedisoa sa mosebetsi ka tsela e le 'ngoe, e loketseng bakeng sa machining microstructures joaloka li-grooves kapa likanale holim'a polyimide. Boithuto bo bonts'a hore maano a ho seha a otlolohileng ho UPFC a fokotsa sebopeho sa li-burr le ho ntlafatsa ho thatafala ha bokaholimo ha ho bapisoa le seha se otlolohileng.

• Ho sila le ho Fetola: Mekhoa ena e tloaelehileng ea CNC e sebelisetsoa likarolo tse kholoanyane, tse kang likarolo tsa enjene kapa lithebe tsa mocheso. Multi-axis (5-axis kapa 7-axis) e ntlafatsa ho tenyetseha, e lumellang ho theoa ha li-geometri tse rarahaneng ka nepo e phahameng.

Mathata ho Machining Polyimides

Ho sebetsa ka polyimides ho na le mathata a 'maloa:

• Tool Wear: Ho thatafala ho phahameng le ho senya ha polyimides ho baka ho apara ka potlako ha lisebelisoa tse tloaelehileng, ho hloka hore ho sebelisoe lisebelisoa tsa daemane kapa tse koahetsoeng ka carbide.

• Mefokolo ea Sefahleho: Li-Burrs, meokho le li-microcracks li ka theha ka lebaka la litekanyo tse sa nepahalang tsa ho itšeha kapa geometry ea sesebelisoa, e behang boleng ba boleng bo holimo.

• Tsamaiso ea Thermal: Ho bokellana ha mocheso nakong ea machining ho ka lebisa ho nolofatseng kapa ho senyeha ha thepa, ho ama ho nepahala ha sebopeho le pheletso ea bokaholimo.

• Boikokobetso: Li-composites tsa polyimide, tse matlafalitsoeng ka likhoele kapa li-fillers, li bonts'a thepa ea anisotropic, e hlokang mekhoa e hlophisitsoeng ea machining ho qoba delamination kapa fiber pullout.

Taolo ea Boleng ba Boleng ho CNC Machining

Bohlokoa ba Boleng ba Sebaka

Boleng ba bokaholimo, bo khetholloang ka ho hlaka ka holim'a metsi (Ra), ho nepahala ha sebopeho (PV), le ho ba sieo ha likoli, ke tsa bohlokoa bakeng sa meaho ea mocheso oa sefofane. Boleng bo tlase bo ka lebisa ho:

• Ts'ebetso e Fokotseng ea Thermal: Bokhopo ba holim'a metsi bo eketsa ho hanyetsa mocheso, bo ama phetisetso ea mocheso ka har'a lithebe tsa mocheso kapa likarolo tsa ho pata.

• Bofokoli ba Mechini: Li-microcracks kapa likhatello tse setseng li ka qala ho hloleha ho khathala, ho beha bophelo bo bolelele ba karolo kotsing.

• Ho senyeha ha Optical: Lits'ebetsong tsa optical, ho se phethahale ha bokaholimo ho hasanya leseli, ho fokotsa ts'ebetso ho li-sensor kapa li-reflectors.

Ho fihlella boleng bo holimo ho hloka taolo e nepahetseng ea liparamente tsa machining, khetho ea lisebelisoa, le mekhoa ea kamora ho sebetsa.

Bokhopo bo Bokaholimo le ho Nepaha ha Sebopeho

Bokhopo ba bokaholimo (Ra) bo lekanya ho kheloha ha kakaretso ea boemo ba bokaholimo ho tloha moleng o bolelang, hangata ho nanometer ho isa ho micrometer bakeng sa polyimides. Foromo e nepahetseng (PV) e lekanya bophahamo ba tlhōrō-ho-phula ea ho kheloha holimo, e bontšang botšepehi ba sebopeho ka kakaretso. Lithuto tse sebelisang SPDT ho polyimides (mohlala, DuPont Vespel SP-1) li fihletse boleng ba Ra ba 1–10 nm le boleng ba PV bo ka tlase ho 1 µm, ho bonts'a boqhetseke bo botle haholo. Liteko tsa UPFC li bonts'itse hore maano a ho itšeha a hloa a fana ka Ra e tlase (mohlala, 5-20 nm) ha e bapisoa le ho itšeha ho tloaelehileng ka lebaka la ho fokotseha ha li-burr.

Lintlha tse Amang Boleng ba Sebaka

Lintlha tse 'maloa li susumetsa boleng ba bokaholimo ho CNC machining ea polyimides:

• Ho khaola li-Parameters: Lebelo la spindle, sekhahla sa phepelo, le botebo ba sehiloeng li ama haholo ho ba teng ha bokaholimo le sebopeho sa sekoli. Lebelo le phahameng la li-spindle le litefiso tse tlase tsa phepelo hangata li ntlafatsa boleng bo holimo empa li ka eketsa moaparo oa lisebelisoa.

• Sesebelisoa sa Geometry: Lisebelisoa tse bohale tse nang le li-angles tse phahameng le radii e tlase li fokotsa matla a ho itšeha le mefokolo ea holim'a metsi. Lisebelisoa tsa litaemane li khethoa bakeng sa ho tšoarella ha tsona le ho nepahala ha tsona.

• Leano la ho Seha: Ho itšeha ho hloa, moo sesebelisoa se tsamaeang ka tsela e ts'oanang le phepelo ea li-workpiece, e fokotsa li-burrs le ho ntlafatsa boreleli ba holim'a metsi ho bapisoa le ho itšeha ho tloaelehileng.

• Boitsebiso ba Boitsebiso: Ho ba teng ha li-fillers (mohlala, likhoele tsa khabone, SiO2) ka har'a li-composites tsa polyimide li ka eketsa bohloeki ba bokaholimo ka lebaka la boits'oaro bo fapaneng ba machining lipakeng tsa matrix le li-filler.

• Ho pholisa le ho tlotsa: Mechine e omileng e tloaelehile bakeng sa polyimides ho qoba ho sebelisana ha lik'hemik'hale, empa ho tlotsa ho fokolang ho ka fokotsa mocheso oa mocheso le ho ntlafatsa boleng ba holim'a metsi.

Maano a Taolo ea Boleng ba Boleng

Ho fumana boleng bo holimo ba holim'a metsi, mekhoa e mengata e sebelisoa:

• Ntlafatso ea Paramethara: Lithuto tsa liteko li sebelisa moralo oa liteko (DOE) ho ntlafatsa maemo a kang lebelo la spindle, sekhahla sa phepelo, le botebo ba ho seha. Mohlala, phuputso e entsoeng ho UPFC ea polyimides e fumane hore lebelo la spindle la 2000 rpm, sekhahla sa phepelo sa 0.05 mm/rev, le botebo ba sehiloeng sa 0.01 mm bo fokolitse Ra ho isa ho 5 nm.

• Tokiso ea Tsela ea Lisebelisoa: Litsela tsa lisebelisoa tsa Unidirectional ho UPFC li fokotsa mekhoa ea ho sebelisana le lisebelisoa, ho ntlafatsa ts'ebetso le ho qeta holimo ha ho bapisoa le litsela tse peli.

• Kamora ho sebetsa: Mekhoa e joalo ka ho bentša kapa ho phunya e ka fokotsa khatello ea maikutlo le mahlahahlaha a holim'a metsi. Annealing ka 250 ° C e ntlafatsa machinability ea polyimides ka ho tsitsisa thepa ea bona ea thermomechanical.

• Lisebelisoa tse tsoetseng pele: Lisebelisoa tsa daemane tse koahetsoeng ka daemane kapa tse nang le kristale e le 'ngoe li ntlafatsa ho itšeha le ho fokotsa ho roala, ho bohlokoa haholo bakeng sa ultra-sebetsa ka ho nepahetseng machining.

• Machine Ithuta: Lithuto tsa morao-rao li sebelisa ho ithuta ka mochini ho bolela esale pele maemo a nepahetseng a machining a ipapisitseng le thepa le liphetho tse lakatsehang, ho ntlafatsa ts'ebetso le boleng ba bokaholimo.

Letlapa la 1: Papiso ea Mekhoa ea ho sebetsa ea CNC bakeng sa Polyimides

Lithuto tsa Teko le Liphuputso

Lithuto tsa Nanoindentation

Nanoindentation ke mokhoa o matla oa ho khetholla thepa ea mochini oa polyimides, e fanang ka leseli mabapi le ho thatafala ha bona le modulus ea elastic, e susumetsang machinability. Boithuto bo mabapi le DuPont Vespel SP-1 bo tlalehile boleng ba nanoindentation hardness ea 0.3–0.5 GPa le elastic moduli ea 3–4 GPa, e bonts'ang khanyetso e phahameng ea deformation. Thepa ena e hloka lisebelisoa tse matla tsa ho itšeha le taolo e nepahetseng ea paramente ho qoba ho roala lisebelisoa tse feteletseng kapa ho senyeha ha bokaholimo.

Liteko tsa SPDT

Liteko tsa ho fetola taemane tsa ntlha e le 'ngoe ho polyimides li bonts'itse bokhoni ba tsona ba ho sebetsa ka mokhoa o nepahetseng haholo. Thuto e entsoeng ke Ji et al. e fihlelletse boleng ba Ra ba 1–10 nm le boleng ba PV bo ka tlase ho 1 µm ho sebelisa sesebelisoa sa daemane se nang le 0.1 µm edge radius le lebelo la spindle la 1500 rpm. Liphetho li totobatsa bohlokoa ba likhahla tse tlase tsa phepo (mohlala, 0.02 mm/rev) le botebo bo sa tebang ba ho seha (mohlala, 0.005 mm) ho fokotsa bofokoli.

Liteko tsa UPFC

Liteko tse nepahetseng haholo tsa ho fokotsa lintsintsi li tsepamisitse maikutlo ho machining microstructures holim'a polyimide, joalo ka li-grooves tse khutlonnetsepa bakeng sa lisensara tsa sefofane. Phuputso ea 2025 ea Harbin Institute of Technology e ile ea bapisa maano a ho itšeha a rapameng le a otlolohileng, a fumana hore ho itšeha ho theohetse ho theohile ha li-burr ka 50% mme ho fihletse boleng ba Ra ba 5-20 nm. Boithuto bona bo boetse bo hlahisitse mehlala ea khopolo-taba bakeng sa motsamao oa sesebelisoa le botenya ba chip, bo netefalitsoeng ke liphetho tsa liteko, tse bonts'itseng likhakanyo tse sa fetoheng tsa botenya ba chip ka har'a 5% ea boleng bo lekantsoeng.

Letlapa la 2: Liphetho tsa Teko bakeng sa Polyimide Machining

Mehlala ea Theory le Ho Ithuta ka Mechini

Tool Motion le Chip Thickness Models

Mehlala ea khopolo-taba ea CNC machining ea polyimides e shebana le ho bolela esale pele motsamao oa sesebelisoa le botenya ba chip ho ntlafatsa boleng ba bokaholimo. Ho UPFC, botenya ba chip (h_max) bo entsoe joalo ka:

[ h_{max} = f \cdot \sebe(\theta) \cdot \le letšehali( \frac{R}{R - d} \ka ho le letona) ]

moo ( f ) ke tekanyo ea phepelo, ( \ theta ) ke angle ea sesebelisoa, ( R ) ke radius ea sesebelisoa, 'me (d) ke botebo ba sehiloeng. Moetso ona, o netefalitsoeng thutong ea 2025, o bolela esale pele ka nepo botenya ba chip ka har'a 5% ea litekanyetso tsa liteko, 'me o thusa ntlafatsong ea paramethara.

Ho Ithuta ka Mechini bakeng sa Ntlafatso ea Paramethara

Ho ithuta ka mochini (ML) ho hlahile e le sesebelisoa se matla sa ho ntlafatsa maemo a machining a CNC. Phuputso ea 2025 e hlahisitse mefuta e tšeletseng ea ML ho bolela esale pele thepa ea mochini oa polyimides le likarolo tsa eona, ho supa maemo a nepahetseng a machining bakeng sa matla a thata, modulus le boleng ba bokaholimo. Mefuta e sebelisitse dataset ea li-polyimides tse inahaneloang tse limilione tse 8, ho fihlela lintlha tse nepahetseng tse boletsoeng esale pele tse kaholimo ho 90% bakeng sa thepa e kang modulus ea Young le bohloeki ba bokaholimo. Mekhoa e thusoang ke ML e thusa ho tsebahatsa maemo a machining ka potlako, ho fokotsa liteko le liphoso litlhophisong tsa liteko.

Lisebelisoa tse Sebetsang ho Aerospace Thermal Structures

Lisebelisoa tsa Enjene

Li-composites tsa polyimide, tse kang PMR-15 le DMBZ-15, li sebelisoa likarolong tsa enjene tse kang li-bypass ducts le li-nozzle flaps, moo li mamellang mocheso ho fihlela ho 335 ° C le ho fana ka pholoso ea boima ba 20-30% ha e bapisoa le mefuta e meng ea tšepe. Mechine ea CNC e tiisa ho etsoa ka mokhoa o nepahetseng oa likarolo tsena, ka ho hlaka holimo (Ra <50 nm) ea bohlokoa bakeng sa ts'ebetso ea aerodynamic.

Ho itšireletsa ka metsi

Polyimide foams le aerogels, tse entsoeng ka libopeho tse rarahaneng li sebelisa UPFC, li sebetsa e le ho kenya mocheso sepakapakeng, ho fana ka conductivity e tlaase ea mocheso (0.029 W / mK) le ho hanyetsa lelakabe ho fihlela ho 1200 ° C. Taolo ea boleng bo holimo e netefatsa mefokolo e fokolang, e ntlafatsa ts'ebetso ea ho kenya letsoho.

Metsoako ea Sebopeho

Li-composites tsa polyimide tse matlafalitsoeng ka carbon fiber li entsoe ka likaroloana tsa sebopeho se bobebe, joalo ka li-tubes tse kenyang moea le sistimi ea ts'ireletso ea mocheso. 5-axis CNC machining e thusa ho theha lijeometri tse rarahaneng tse nang le boleng ba PV ka tlase ho 5 µm, tse kopanang le mamello e matla ea sepakapaka.

Letlapa la 3: Likopo tsa CNC-Machined Polyimides ho Aerospace

Mathata le Litsela tsa Kamoso

Mathata a Hajoale

• Lisebelisoa le Litšenyehelo: Lisebelisoa tsa daemane, le hoja li sebetsa, li theko e boima 'me li hloka ho hlokomeloa khafetsa ka lebaka la polyimide ea abrasiveness.

• Tsamaiso ea Thermal: Mekhoa e sebetsang ea ho pholisa e hlokahala ho thibela tšenyo ea mocheso ntle le ho senya botsitso ba lik'hemik'hale.

• Mechine e Kopanetsoeng: Thepa ea anisotropic ea li-composites tsa polyimide e thatafatsa machining, e hlokang moralo o tsoetseng pele oa lisebelisoa ho qoba delamination.

• Scalability: Ho eketsa mekhoa e nepahetseng haholo joalo ka SPDT le UPFC bakeng sa likarolo tse kholo tsa sepakapaka e ntse e le phephetso.

Litaelo tsa nakong e tlang

• Lisebelisoa tse tsoetseng pele tsa lisebelisoa: Ho theha lisebelisoa tse bolokang chelete e ngata, tse hananang le ho roala ho matlafatsa ho tšoarella le ho fokotsa litšenyehelo tsa mochini.

• Lihlahisoa tsa Hybrid: Ho kopanya tlhahiso ea tlatsetso le machining ea CNC ho theha meaho e rarahaneng ea polyimide e nang le litšila tse fokolang tsa thepa.

• Ntlafatso e tsamaisoang ke AI: Ho holisa lits'ebetso tsa ML ho taolo ea machining ea nako ea nnete, ho bolela esale pele moaparo oa lisebelisoa, le ho ntlafatsa boleng ba bokaholimo.

• Ts'ebetso e tsitsitseng: Ho hlahloba maro a machining a sebetsang hantle tikolohong le maano a ho a sebelisa hape bakeng sa litšila tsa polyimide ho ikamahanya le lipheo tsa ts'ebetso.

fihlela qeto e

Li-polymers tse sebetsang hantle tse thehiloeng ho polyimide li bohlokoa bakeng sa meaho ea mocheso oa sefofane, tse fanang ka botsitso bo ke keng ba lekanngoa ba mocheso, matla a mochini le ho boloka boima ba 'mele. CNC machining, ka mekhoa e kang SPDT, UPFC, le milling ea li-multi-axis, e nolofalletsa ho etsoa ha likarolo tse nepahetseng, tsa boleng bo phahameng tsa bohlokoa bakeng sa lisebelisoa tsa sefofane. Taolo ea boleng bo holimo, e tsamaisoang ke liparamente tse ntlafalitsoeng, lisebelisoa tse tsoetseng pele, le thuto ea mochini, e netefatsa hore li-polyimides tse entsoeng ka mochini li fihlela litlhoko tse thata tsa ts'ebetso. Leha ho na le mathata a kang ho roala lisebelisoa le taolo ea mocheso, lipatlisiso tse tsoelang pele le tsoelo-pele ea theknoloji li tšepisa ho ntlafatsa machina le ho sebetsa ha polyimides. Sengoliloeng sena se fana ka motheo o felletseng oa ho utloisisa mekhoa ea machining ea CNC le maano a taolo ea boleng bo holimo bakeng sa polyimides, e ts'ehetsoeng ke data ea liteko le lintlha tsa theory, ho bula tsela bakeng sa lits'ebetso tsa nako e tlang tsa boenjiniere ba sefofane.

Polelo e Hatisitsoeng: Haeba ho se na litaelo tse ikhethang, lingoloa tsohle tse fumanehang sebakeng sena sa marang-rang ke tsa mantlha. Ka kopo bonts'a mohloli oa khatiso: https: //www.cncmachiningptj.com/ li -ththanks！

PTJ® e fana ka mefuta e felletseng ea Custom Precision cnc machining china ISO 9001: 2015 & JOALOKAHA-9100 pakiloeng. 3, 4 le 5-axis ka potlako e nepahetseng litšebeletso tsa machining tsa CNC ho kenyelletsa le ho sila, ho fetohela ho litlhaloso tsa bareki, Ho khona likarolo tsa tšepe le polasetiki tse nang le mamello ea +/- 0.005 mm.shoa ho lahla,lesela la tšepe 'me stampHo fana ka lipapatso, tlhahiso e felletseng, tšehetso ea tekheniki le tlhahlobo e felletseng likoloi, aerospace, hlobo le sesebelisoa, mabone a lebisitsoeng,ya kalafi, baesekele, le moreki elektronike liindasteri. Ho fana ka nako. Re bolelle hanyane ka tekanyetso ea projeke ea hau le nako e lebelletsoeng ea ho fihla. Re tla rera leano la ho fana ka lits'ebeletso tse baballang litšenyehelo ho u thusa ho fihlela sepheo sa hau, Rea u amohela ho Ikopanye le rona ( sales@pintejin.com ) ka kotloloho bakeng sa projeke ea hau e ncha.