I-Powder Metallurgy
Iyini imikhiqizo ye-Powder metallurgy?
Imikhiqizo ye-powder metallurgy ziyizingxenye ezisikiwe ezikhiqizwa indlela ye-powder metallurgy enembayo ethile futhi zingamelana nokushuba, ukucindezelwa, ukuhlanekezela neminye imithwalo noma zisebenze ngaphansi kwezimo zokungqubuzana nokuguga, ezaziwa nangokuthi izingxenye ezisindisiwe.
Izindlela: Okwakhiwa futhi kamuvaizingxenye ze-sinteredbacindezelwa ku-uniaxial rigid die ezingeni lokushisa elilingana negumbi.
Isicelo: Izingxenye ze-powder metallurgy zisetshenziswa kakhulu embonini yezimoto, futhi zinezinhlelo zokusebenza ezingcono esikhathini esizayo.
Izinzuzo zezingxenye ze-powder metallurgy
- Lapho izingxenye zinemimo engajwayelekile, ephumayo noma imigodi, kanye nezimbobo ezihlukahlukene ezimise okukhethekile, i-powder metallurgy kulula ukwenza, futhi asikho isidingo noma inani elincane kuphela lokusika okungeziwe. Inomnotho osobala.
- Uma usebenzisa inqubo ye-powder metallurgy ukukhiqiza izingxenye zemishini, izinga lokusebenzisa impahla lingafinyelela ngaphezu kwama-99.5%.
- Ngenxa yokuthi izingxenye zenqubo ye-powder metallurgy zikhiqizwa ngesikhunta, ukuhambisana kohlaka, ukuma nobukhulu bezingxenye kuhle kakhulu, futhi kuneziguquguquko eziningi kuzo zonke izici zokucubungula kwemishini, kunzima ukugcina ukuhambisana.
- Inqubo ye-powder metallurgy ingahlanganisa izingxenye eziningana enqubweni yokukhiqiza, engasindisa izindleko zokucubungula kanye nokuhlanganisa kamuva.
- Ubuningi bezinto zezingxenye zesakhiwo sempushana ziyalawuleka, zinenani elithile lezimbotshana ezixhunyiwe, futhi ngokuvamile zicwiliswe ngamafutha okugcoba angama-5% -20% ukuze kunikeze izinga elithile lokuzigcoba, ngaleyo ndlela kuthuthukiswe ukumelana nokugqokwa.
- Ekukhiqizeni i-powder metallurgy, ukuze kube lula ukukhishwa kwezingxenye kusuka kufa ngemva kokwakhiwa, indawo yokusebenza yefa inesiphetho esiphezulu, ukuze izingxenye zibe nokuqedwa kokuguqulwa kwe-amplitude. Ngaphezu kwalokho, izingxenye zesakhiwo se-powder metallurgy zingabuye zibe i-electroplating, i-coating, ukwelashwa kokushisa nokunye ukwelashwa okulandelayo njengezingxenye zemishini.
Ukungalungi: Ngenxa yokuba khona kwezimbotshana eziyinsalela, i-ductility yayo kanye nenani lomthelela liphansi kunalelo lokulingisa okunokwakheka kwamakhemikhali okufanayo, ngaleyo ndlela kukhawulelwe ububanzi bokusebenza kwayo.
izingxenye ze-powder metallurgy
Umhlahlandlela wokuklama insimbi yempuphu
Inqubo ye-powder metallurgy ingakhiqiza izingxenye ngezinhlobonhlobo zobukhulu nobujamo, kanti ubukhulu bezingxenye ezingakhiqizwa buncike emandleni okushicilela atholakalayo.
Umumo wengxenye olula ukuwenza ngenqubo ye-powder metallurgy yileyo enosayizi ofanayo ohlangothini olucindezelayo. Izingxenye ezinezimbobo esiqondisweni sokucindezela ngokuvamile zakhiwe nge-mandrel. Okhiye nokhiye abasendaweni yokucindezela kulula ukuzicindezela, futhi izici zokuma njengemigodi, izimbobo, amakhoni, ama-engeli ama-concave nemicu ku-Engeli eya lapho ucindezela khona azikwazi ukucindezelwa yizinqubo ezijwayelekile ze-powder metallurgy. Kodwa-ke, ngesakhiwo esiyinkimbinkimbi yesikhunta singakhiwa izingxenye eziyinkimbinkimbi zomumo. Lokho kwengeze izindleko.
Amagiya, ama-ratchets namakhamera
Amagiya, ama-ratchets namakhamera afaneleka ngokukhethekile ukukhiqizwa ngezinqubo ze-powder metallurgy.
Izinzuzo zokukhiqiza i-powder metallurgy:
① Ukunemba kobukhulu begiya ekukhiqizeni ngobuningi kufana.
② Ngenxa yokuthi ukuhlelwa kwezinto kuqukethe i-porosity ethile, isiza igiya ukuthi lisebenze kahle futhi likwazi ukuzithambisa ngokwalo.
③ Igiya le-powder metallurgy eline-Angle eyimpumputhe lingenziwa.
Igiya nezinye izingxenye zomumo zingahlanganiswa ngenqubo ye-powder metallurgy.
⑤ Ingakhiqiza izinhlobo ezahlukene zegiya.
⑥ Ukukhiqizwa okulula nezindleko eziphansi.
Ukubekezelela i-powder metallurgy
Ukushintshashintsha kosayizi phakathi kwezingxenye ze-powder metallurgy kubangelwa kakhulu ukushintsha kokucindezela kokucindezela.
Ngokubuka ukucindezela okufanayo kokucindezela, ukuchezuka kokunwebeka kwe-longitudinal kwe-punch ye-die kukhulu kunokunwebeka okunwebekayo kwe-negative die, ngakho-ke ukubekezelelana kobukhulu endaweni yokucindezela kukhulu kunaleyo ekuqondeni kokucindezela okuqondile.
Ubudlelwano bemishini:
△ isibhakela / △ idayizi = 3L/D
U-D umele isilinganiso sikasayizi werediyali we-cavity yemodeli eyinegethivu.
U-L umele ubude obuphelele be-punch ye-die.
Indlela yokunciphisa ukubekezelelana kwe-dimensional?
Ukubekezelelana kobukhulu bengxenye kungathuthukiswa ngokuqeda, okuwukubeka ingxenye ehlanganisiwe ku-negative die bese uyicindezela ngokushaya ngokufa, okungukuthi, ukuyicindezela futhi ku-fining die. Inhloso eyinhloko yokuqeda ukulungisa ukuhlanekezela okubangelwa i-sintering.
Ukwenza imishiniizingxenye ze-powder metallurgy
Inhloso eyinhloko yokusebenzisa izingxenye ze-powder metallurgy ukufeza ukusika okuncane, akukho ukucubungula ukusika, ukonga amandla, ukonga impahla, ukunciphisa izindleko zokukhiqiza izingxenye. Izingxenye ze-powder metallurgy akulula ukuzisika njengezingxenye zensimbi ezihambisanayo. Ngenxa yesenzo sokusika ngezikhathi ezithile esibangelwa ama-pores esakhiweni sezinto ezibonakalayo, impilo yamathuluzi ifushane futhi ubulukhuni obungaphezulu bengxenye bubuthakathaka.
Izinga lokunquma ukusebenziseka kwe-powder metallurgy: thola amandla ngokulinganisa inani lezimbobo ezingabhobolwa. Inani lensimbi engu-1045 licaciswa ukuthi liyi-100, futhi isilinganiso sokusebenza singanqunywa ngefomula elandelayo.
Isilinganiso sokusebenza = inani lezimbobo ezibhoboziwe ekucwiliseni/inani lezimbobo ezibhojwe ngensimbi engu-1045 ×100
I-Mn, P, S nezinye izithasiselo zengezwa kundaba ukuze kuthuthukiswe ukusebenza kwezingxenye ze-powder metallurgy. Izakhiwo zokusika ze-powder metallurgy materials zingabuye zithuthukiswe ngokukhetha kahle amathuluzi okusika i-carbide kanye nejometri yamathuluzi.
Umthelela wokuminyana kwezinto ezibonakalayo ezingxenyeni ze-powder metallurgy
Ekukhiqizeni izingxenye zesakhiwo se-powder metallurgy, ukucindezelwa kanye ne-secondary sintering kuvame ukusetshenziselwa ukuthuthukisa ukuminyana kwezingxenye, futhi izingxenye zesakhiwo zikhiqizwa ngokushoumzila wenqubo wokucindezela -- primary sintering -- repressing -- sintering yesibili.Ubuningi bezinto zezingxenye bungakhuphuka bube cishe95%yaleyo yensimbi evamile ngokucindezela kabusha, i-sintering yesibili nokucindezela okufudumele.
Ukucindezela kufana nokuqeda, ukucindezela okuphezulu okusetshenziswa ngesikhathi sokucindezela kuphela ukwandisa ukuminyana okuphelele kwengxenye, futhi i-sintering yesibili ibhekisela ekubuyiseleni kabusha ngemva kokucindezela. Amandla nokuqina kwezingxenye zesakhiwo kungathuthukiswa ngenxa yobuningi bezinto ezibonakalayo zezingxenye zesakhiwo ngemva kokucindezela kabusha kanye ne-secondary sintering.
Inqubo ye-Powder Metallurgy
Ukwakheka kwamakhemikhali kanye nezakhiwo zemishini
Izingxenye ze-powder metallurgy ezikhiqizwa inqubo evamile yokucindezela kanye ne-sintering zinezimbobo, futhi izakhiwo zazo zemishini ziphansi kunezinsimbi ezicinene ezinezakhi ezifanayo zamakhemikhali ezikhiqizwa izindlela ezivamile. Ukuze uthuthukise izakhiwo zemishini yezingxenye zesakhiwo se-powder metallurgy:
Manje iimpahla eluhlaza powdernezakhi alloying yilezi: impushana yensimbi, impushana yethusi kanye graphite powder exutshwe, insimbi powder, nickel powder, graphite powder exutshwe powder, iron powder, phosphorus iron powder exutshwe powder, diffusion alloyed powder, ingxube yensimbi powder kanye nensimbi engagqwali.
Uhlobo Lwezinto | Izinto Ezivamile | Izici Eziyinhloko | Izinhlelo zokusebenza |
---|---|---|---|
I-ayoni | Insimbi, insimbi ye-alloy ephansi, insimbi engagqwali | Amandla aphezulu, ayigugi | Izingxenye ezizenzakalelayo, imishini |
I-Copper-based | Ithusi, ithusi, ithusi | I-conductivity enhle, ukumelana nokugqwala | Izingxenye zikagesi, ama-bearings |
I-nickel-based | I-nickel, i-nickel alloys | Ukumelana nokushisa, ukumelana nokugqwala | I-Aerospace, ama-turbines |
Isekelwe ku-Titanium | Titanium, titanium alloys | Amandla aphezulu, angasindi, amelana nokugqwala | Imishini yezokwelapha, i-aerospace |
Aluminium-based | I-aluminium, ama-alloys e-aluminium | Ilula, kulula ukuyicubungula | Ama-elekthronikhi, izingxenye zezimoto |
Ama-alloys aqinile | I-tungsten carbide, i-titanium carbide | Ukuqina okuphezulu, ukumelana nokuguga | Amathuluzi okusika, isikhunta |
Izinto zikaZibuthe | Ferrite, NdFeB | I-magnetism enamandla, imelana nokushisa | Izinjini, izinzwa |
Ama-alloys asezingeni eliphezulu | I-Nickel, ama-alloys asekelwe ku-cobalt | Ukumelana nokushisa, ukumelana ne-oxidation | I-Aerospace, ukukhiqizwa kwamandla |
Izinhlanganisela | I-Metal-ceramic, i-metal-carbon fiber | Amandla aphezulu, angasindi | I-Aerospace, izingxenye zezimoto |
Izinqubo zokukhiqiza ezisetshenziswayo yilezi: ukucindezela - ukucwilisa, ukucindezela - pre-sintering - ukucindezela - ukucindezela, ukucindezela okufudumele - ukucwilisa, ukucindezela okushisayo, ukuphoqa okushisayo nokunye.
Umkhuba wokuthuthukiswa kwezingxenye ze-powder metallurgy
Umkhuba wokuthuthukiswa kwezinto ezinjalo ukunciphisa noma ukuqeda ama-pores asele ngaphakathi kwempahla, nokuthuthukisa izinto ezisekelwe kunsimbi ezihlanganiswe ne-chromium, i-manganese, i-titanium, i-silicon nezinye izakhi ukuze kuthuthukiswe izakhiwo zemishini yezinto ezibonakalayo nokwandisa inkambu yesicelo.
Jiehuangiyinkampani edumile yemikhiqizo ye-powder metallurgy e-China, imikhiqizo ye-Jiehuang ithengiswa kuwo wonke amazwe emhlabeni, ikakhulukazi e-Italy, e-Poland, e-Denmark, e-USA, e-UK nakwamanye amazwe,sicela uthumele imidwebo yakho, sizokuphendula ngokushesha!