Iyini imikhiqizo ye-Powder metallurgy?

Imikhiqizo ye-powder metallurgyziyizingxenye ezisikiwe ezikhiqizwe indlela ye-powder metallurgy ngokunemba kobukhulu obuthile futhi zingamelana nokushuba, ukucindezelwa, ukuhlanekezela kanye neminye imithwalo noma zisebenze ngaphansi kwezimo zokungqubuzana nokuguga, ezaziwa nangokuthi izingxenye ezisindisiwe.

Izindlela: Izingxenye ezakhiwe kanye nezalandela zacindezelwa ku-uniaxial rigid die ezingeni lokushisa legumbi.

Isicelo: Izingxenye ze-powder metallurgy zisetshenziswa kakhulu embonini yezimoto, futhi zinezinhlelo zokusebenza ezingcono esikhathini esizayo.

Izinzuzo zezingxenye ze-powder metallurgy

1. 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.
2. Uma usebenzisa inqubo ye-powder metallurgy ukukhiqiza izingxenye zemishini, izinga lokusebenzisa impahla lingafinyelela ngaphezu kwama-99.5%.
3. 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.
4. Inqubo ye-powder metallurgy ingahlanganisa izingxenye eziningana enqubweni yokukhiqiza, engasindisa izindleko zokucubungula kanye nokuhlanganisa kamuva.
5. 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.
6. 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.

Umhlahlandlela wokuklama insimbi yempuphu

Inqubo ye-powder metallurgy ingakhiqiza izingxenye ezinobukhulu obuhlukahlukene kanye nokwakheka, futhi ubukhulu obukhulu 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. 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 okunwebeka 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.

Ukucutshungulwa kwezingxenye 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 licaciswe 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 endabeni 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 nokucwiliswa kwesibili kuvame ukusetshenziselwa ukuthuthukisa ukuminyana kwezingxenye, futhi izingxenye zesakhiwo zikhiqizwa ngokuya ngomzila wenqubo wokucindezela -- primary sintering -- repressing -- second sintering. Ukuminyana kwezingxenye kungakhushulwa kufinyelele ku-95% wensimbi evamile ngokucindezela kabusha, ukucwiliswa kwesibili kanye 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.

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 i-powder eluhlaza enezici ezixubile yilezi: i-iron powder, i-copper powder ne-graphite powder exutshwe, i-iron powder, i-nickel powder, i-graphite powder exutshwe, i-iron powder, i-phosphorus iron powder exutshwe, i-diffusion alloyed powder, ne-alloyed steel powder insimbi engagqwali powder.

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, ePoland, eDenmark, e-USA, e-UK nakwamanye amazwe, sicela uthumele imidwebo yakho, sizokuphendula ngokushesha!