Metallurgy ea phofo
Lihlahisoa tsa Powder metallurgy ke eng?
Lihlahisoa tsa phofo ea metallurgy ke likarolo tse sintered tse entsoeng ka mokhoa oa metallurgy oa phofo ka ho nepahala ha maemo a itseng 'me li khona ho mamella tsitsipano, khatello, ho khopama le meroalo e meng kapa ho sebetsa tlas'a likhohlano le maemo a ho roala, a tsejoang hape e le likarolo tse sintered.
Mekhoa: The thehoa le ka mor'a moolikarolo tse sinteredba ne ba hatelloa ka uniaxial rigid die ka mocheso oa kamore.
Kopo: Likarolo tsa metallurgy tsa phofo li sebelisoa haholo indastering ea likoloi, 'me li na le lits'ebetso tse ntle nakong e tlang.
Melemo ea likarolo tsa phofo ea metallurgy
- Ha likarolo li e-na le libopeho tse sa tloaelehang, tse hlahelletseng kapa likoti, le likoti tse fapa-fapaneng tse nang le sebōpeho se khethehileng, metallurgy ea phofo e bonolo ho e etsa, 'me ha ho hlokahale kapa ho fokotseha hanyenyane feela. E na le moruo o hlakileng.
- Ha o sebelisa ts'ebetso ea metallurgy ea phofo ho hlahisa likarolo tsa mochini, sekhahla sa ts'ebeliso ea thepa se ka fihla ho feta 99.5%.
- Hobane likarolo tsa ts'ebetso ea phofo ea metallurgy li hlahisoa ka liforomo, ho lumellana ha kemiso, sebōpeho le boholo ba likarolo li ntle haholo, 'me ho na le mefuta e mengata e fapaneng likarolong tsohle tsa ts'ebetso ea mechine, ho thata ho boloka ho tsitsisa.
- Ts'ebetso ea metallurgy ea phofo e ka kopanya likarolo tse 'maloa ts'ebetsong ea tlhahiso, e ka bolokang litšenyehelo tsa ts'ebetso le kopano hamorao.
- Boima ba thepa ea likarolo tsa sebopeho sa phofo bo khona ho laoleha, bo na le palo e itseng ea li-pores tse hokahaneng, 'me ka kakaretso li kolobisitsoe ka oli e tlotsang ea 5% -20% ho fana ka tekanyo e itseng ea ho itlotsa, ka tsela eo ho ntlafatsa ho hanyetsa ho roala.
- Ka tlhahiso ea metallurgy ea phofo, e le ho nolofalletsa ho tlosoa ha likarolo ho tloha lefung ka mor'a ho theha, sebaka sa ho sebetsa sa lefu se na le qetello e phahameng, e le hore likarolo li be le qetello ea ho feto-fetoha ha amplitude. Ntle le moo, likarolo tsa sebopeho sa metallurgy le tsona e ka ba electroplating, coating, kalafo ea mocheso le kalafo e meng e latelang joalo ka likarolo tsa mochini.
Mefokolo: Ka lebaka la ho ba teng ha li-pores tse setseng, ductility ea eona le boleng ba ts'usumetso li tlase ho feta tsa li-castings tse nang le lik'hemik'hale tse tšoanang, kahoo li fokotsa mefuta ea tšebeliso ea eona.
likarolo tsa phofo ea metallurgy
Tataiso ea moralo oa tšepe ea phofo
Mokhoa oa metallurgy oa phofo e ka hlahisa likarolo ka mefuta e mengata ea boholo le libopeho, 'me boholo ba likarolo tse ka hlahisoang bo itšetlehile ka matla a teng a khatiso.
Karolo e bonolo ka ho fetisisa ea sebopeho sa ho etsa ka phofo ea metallurgy ke e nang le boholo bo lekanang ka lehlakoreng la khatiso. Likarolo tse nang le masoba ka tsela e hatellang hangata li thehoa ka mandrel. Linotlolo le litselana tsa bohlokoa tse sebakeng sa khatiso li bonolo ho li tobetsa, 'me likarolo tsa sebopeho tse kang li-grooves, masoba, li-cones, li-angles le likhoele ka Angle ho ea ho le letona li ke ke tsa hatelloa ke mekhoa ea metallurgy e akaretsang. Leha ho le joalo, ka sebopeho se rarahaneng sa hlobo se ka thehoa likarolo tsa sebopeho se rarahaneng. Seo se ekelitse litšenyehelo.
Li-gears, li-ratchets le likam
Li-gear, li-ratchets le lik'hamera li loketse ka ho khetheha tlhahiso ka mekhoa ea metallurgy ea phofo.
Melemo ea tlhahiso ea phofo ea metallurgy:
① Ho nepahala ha likarolo tsa lisebelisoa tlhahisong ea bongata ho tšoana.
② Hobane mokhatlo o hlophisitsoeng o na le porosity e itseng, e thusa lisebelisoa hore li tsamaee hantle 'me li ka itlholisa.
③ Lisebelisoa tsa metallurgy tsa phofo tse nang le Angle e foufetseng li ka etsoa.
Lisebelisoa le likarolo tse ling tsa sebopeho li ka kopanngoa ke mokhoa oa metallurgy oa phofo.
⑤ E ka hlahisa mefuta e fapaneng ea lisebelisoa.
⑥ Tlhahiso e bonolo le theko e tlaase.
Mamello ea phofo ea metallurgy
Ho feto-fetoha ha boholo pakeng tsa likarolo tsa phofo tsa metallurgy ho bakoa haholo-holo ke phetoho ea khatello ea khatello.
Ka lebaka la khatello e tšoanang ea khatello, ho kheloha ha longitudinal elastic ea "die punch" e kholo ho feta ho atolosoa ha rekere ea "fegative die", ka hona, mamello ea dimensional ka tsela e hatellang e kholo ho feta ka tsela e otlolohileng ea khatiso.
Likamano tsa mochini:
△ punch / △ the die = 3L/D
D e emela boholo bo tloaelehileng ba radial ea cavity ea mohlala o fosahetseng.
L e emela bolelele ba kakaretso ea "die punch".
Joang ho fokotsa mamello ea dimensional?
Mamello ea likaroloana tsa karolo e ka ntlafatsoa ka ho qeta, e leng ho kenya karolo e sintered ka har'a lefu le lebe le ho e hatella ka "die punching", ke hore, ho e hatella hape ka lefu la ho qetela. Sepheo se seholo sa ho qetela ke ho lokisa khopamiso e bakoang ke ho sintering.
Mochiniea likarolo tsa phofo ea metallurgy
Sepheo se seholo sa ho sebelisa likarolo tsa metallurgy tsa phofo ke ho finyella ho fokotseha ho fokolang, ho se sebetse ho itšeha, ho boloka matla, ho boloka thepa, ho fokotsa litšenyehelo tsa tlhahiso ea likarolo. Likarolo tsa phofo ea metallurgy ha li bonolo ho khaola joaloka likarolo tse tloaelehileng tsa tšepe. Ka lebaka la ketso ea nakoana ea ho itšeha e bakoang ke li-pores mohahong oa thepa, bophelo ba sesebelisoa bo khutšoanyane 'me karolo e ka holimo ea karolo e futsanehile.
Tekanyetso ea ho khetholla machinability ea phofo metallurgy: fumana machinability ka ho lekanya palo ea likoti tse ka phunngoang. Boleng ba tšepe ea 1045 bo hlalositsoe hore ke 100, 'me tekanyo ea machinability e ka khethoa ka mokhoa o latelang.
Tekanyetso ea ho cheka = palo ea likoti tse chekiloeng ka sintering / palo ea likoti tse chekiloeng ka tšepe ea 1045 × 100
Mn, P, S le li-additives tse ling li eketsoa ho lisebelisoa ho ntlafatsa machinability ea likarolo tsa phofo ea metallurgy. Thepa ea ho itšeha ea lisebelisoa tsa metallurgy ea phofo e ka boela ea ntlafatsoa ka ho khetha ka nepo lisebelisoa tsa ho itšeha ka carbide le geometry ea lisebelisoa.
Phello ea matla a thepa ho likarolo tsa phofo tsa metallurgy
Ha ho etsoa likarolo tsa sebopeho sa metallurgy, khatello le sintering ea bobeli hangata e sebelisoa ho ntlafatsa bongata ba likarolo, 'me likarolo tsa sebopeho li hlahisoa ho latelathe process route of pressing -- primary sintering -- repressing -- secondary sintering.Boima ba thepa ea likarolo bo ka eketsoa ho hoo e ka bang95%ea tšepe e tloaelehileng ka ho tobetsa hape, ho penya ha bobeli le ho hatella ka mofuthu.
Ho hatella ho tšoana le ho qeta, khatello e phahameng e sebelisoang nakong ea ho hatella ke feela ho eketsa boholo ba karolo, 'me sintering ea bobeli e bolela ho sintering hape ka mor'a ho hatella. Matla le ho tiea ha likarolo tsa sebopeho li ka ntlafatsoa ka lebaka la boima bo phahameng ba lisebelisoa tsa likarolo tsa mohaho ka mor'a ho hatella hape le ho sintering ea bobeli.
Mokhoa oa Metallurgy oa Powder
Sebopeho sa lik'hemik'hale le thepa ea mechine
Likarolo tsa phofo tsa metallurgy tse hlahisoang ke ts'ebetso e akaretsang ea ho hatella le ea sintering li porous, 'me thepa ea bona ea mochini e tlase ho feta ea lisebelisoa tsa tšepe tse teteaneng tse nang le lik'hemik'hale tse tšoanang tse hlahisoang ke mekhoa e tloaelehileng. Bakeng sa ho ntlafatsa thepa ea mochini ea likarolo tsa sebopeho sa metallurgy:
Joale kephofo e talatse nang le likarolo tsa alloying ke: phofo ea tšepe, phofo ea koporo le phofo ea graphite e tsoakiloeng, phofo ea tšepe, phofo ea nickel, phofo ea graphite e tsoakiloeng, phofo ea tšepe, phofo ea phosphorus ea tšepe e tsoakiloeng, phofo e entsoeng ka motsoako, phofo ea alloyed le phofo ea tšepe e sa hloekang.
| Mofuta oa Boitsebiso | Lisebelisoa tse Tloaelehileng | Likarolo tsa Bohlokoa | Lisebelisoa |
|---|---|---|---|
| E thehiloeng ka tšepe | Tšepe, tšepe e tlaase, tšepe e sa hloekang | Matla a phahameng, a sa senyeheng | Likarolo tsa likoloi, mechini |
| E thehiloeng ka koporo | Koporo, koporo, koporo | conductivity e ntle, e thibelang kutu | Likarolo tsa motlakase, libere |
| E thehiloeng ho nickel | Nickel, li-alloys tsa nickel | E thibela mocheso, e sa bola | Sepakapaka, li-turbine |
| E thehiloeng ho Titanium | Titanium, li-alloys tsa titanium | Matla a holimo, a bobebe, a hana ho bola | Lisebelisoa tsa bongaka, sepakapaka |
| Aluminium e thehiloeng | Aluminium, metsoako ea aluminium | E bobebe, e bonolo ho sebetsa | Elektronike, likarolo tsa likoloi |
| Li-alloys tse thata | Tungsten carbide, titanium carbide | Boima bo phahameng, bo sa senyeheng | Lisebelisoa tsa ho itšeha, hlobo |
| Lisebelisoa tsa makenete | Ferrite, NdFeB | magnetism e matla, e thibelang mocheso | Li-motor, li-sensor |
| Li-alloys tsa mocheso o phahameng | Nickel, li-alloys tse thehiloeng ho cobalt | E thibela mocheso, e thibela oxidation | Aerospace, tlhahiso ea matla |
| Likopano | Metal-ceramic, tšepe-carbon fiber | Matla a phahameng, a bobebe | Aerospace, likarolo tsa likoloi |
Mekhoa ea tlhahiso e sebelisoang ke: ho hatella - sintering, ho hatella - pele ho sintering - ho hatella - ho senya, ho hatella ka mofuthu - ho penya, ho hatella ho chesang, ho chesa ho chesa joalo-joalo.
Mokhoa oa nts'etsopele ea likarolo tsa phofo ea metallurgy
Mokhoa oa nts'etsopele ea lisebelisoa tse joalo ke ho fokotsa kapa ho felisa li-pores tse setseng ka har'a thepa, le ho nts'etsapele lisebelisoa tse thehiloeng ka tšepe tse kopantsoeng le chromium, manganese, titanium, silicon le likarolo tse ling ho ntlafatsa thepa ea mochini oa thepa le ho holisa tšimo ea kopo.
Jiehuangke k'hamphani e tummeng ea lihlahisoa tsa metallurgy Chaena, lihlahisoa tsa Jiehuang li rekisoa linaheng tsohle tsa lefats'e, haholo-holo Italy, Poland, Denmark, USA, UK le linaheng tse ling,ka kopo romella litšoantšo tsa hau, re tla u araba hang-hang!
