Lapho onjiniyela becacisa izingxenye zensimbi ezinembe kakhulu zamavalvu asebenza ngamanzi, amaphampu, noma ama-winch shafts—ikakhulukazi ngaphansi kwezimo ezicindezela kakhulu, ezigqoke kakhulu, noma ezigqwalile—abadingi nje umphakeli. Badinga a i-mim metal injection molding process factory eqonda ukuziphatha kwe-metallurgical, ukuzinza kwe-dimensional, nezindlela zokwehluleka kokusebenza-hhayi nje ukubekezelela umdwebo.
Sibone amaphrojekthi amaningi ema esigabeni se-prototype ngoba umenzi okhethiwe uphathe i-MIM “njengenye nje inqubo yokubumba.” Eqinisweni, i-MIM ephumelelayo yezingxenye ezibalulekile zemishini idinga ukuhlanganiswa okuqinile phakathi kokukhethwa kwempushana, ukwakheka kwe-binder, i-kinetics yokubopha, ukulawulwa kwephrofayela ye-sintering, kanye nomshini we-post-sinter. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., siphatha yonke ingxenye ye-MIM njengesihlalo sevalvu ye-cobalt-nickel alloy: iphutha elilodwa ekulawuleni ikhabhoni ngesikhathi sokucwilisa kungabangela i-microcracking ngaphansi kokulayisha umjikelezo wamabha angu-300. Kungakho indawo yethu ethobela i-ISO e-Qingdao ingakukhiphi ukukhipha noma ukucwilisa amanzi—singabanikazi bomjikelezo ogcwele wokushisa, ukusuka ku-650°C i-catalytic debind ukuya ku-1280°C i-vacuum sintering ngokugadwa okunembe kwephuzu lamazolo.
Iningi labathengi alinaki isithiyo esibucayi: I-MIM idlula zonke ekuxakakeni komumo wenetha—kodwa kuphela ngaphakathi kwemingcele eqinile yejometri. Ubukhulu bodonga kufanele buhlale phakathi kuka-1.5 mm no-8 mm. I-aspect ratio ngenhla 6:1 ingozi density gradients. Ama-Undercuts? Kungenzeka—kodwa kuphela ngamakhora e-ceramic agoqekayo, hhayi amathuluzi ajwayelekile. Sisize amakhasimende akhe kabusha izingxenye zephampu ye-AMS 5387 cobalt alloy ukuze kuqedwe irediya yangaphakathi ebukhali, ukusika ukuhlanekezela kwe-sintering ngo-40% kuyilapho kugcinwa ubuqotho bendlela yokugeleza. Lokho akulona ithiyori. Yilokho okwenzekayo uma wakho i-mim metal injection molding process factory isebenzisa inkatho ye-MIM engu-120+ ngonyaka ezitokweni zebanga le-aerospace—futhi ibhala zonke izinga lokushwabana, i-warpage vector, nokuchezuka komthamo wenqwaba ngayinye.
Nakhu okuhlukanisa ukunemba kwe-MIM nempahla ye-MIM:
- Ukulandeleka kwezinto kuqala ngaphambi kokuthi impushana ingene ku-hopper: Sithola i-CoCrMo ene-atomized gas-atomized and T800 alloy powders ngemibiko egcwele ye-PMI—futhi siqinisekisa okuqukethwe komoyampilo, ukusatshalaliswa kosayizi wezinhlayiyana (D50 = 8.2–9.6 µm), kanye nenqwaba yokuminyana ngokusobala.
- Ukukhipha imali akunqunyelwe isikhathi—kuyagadwa: Esikhundleni sobude besikhathi sokucwiliswa okugxilile, silandelela ukulahleka kwesisindo sesikhathi sangempela ngezinzwa ze-gravimetric. Isibophezelo esiyinsalela esingu-0.3% sidala ukulungiswa kwephrofayela okuzenzakalelayo—ngoba ukususwa okungaphelele kubangela ukuqunjelwa; over-debinding izimemo cracking.
- Amaphrofayili e-Sintering acacisiwe ngokwengxenye, awacacisi isithando somlilo: Indlu yesilinda sephampu ye-piston ithola irempu ehamba kancane ku-800–1000°C kunomlomo wengxenye encane. Silungisa izikhathi zokuhlala ngokusekelwe kumodeli yesisindo esishisayo—hhayi ishadi eliyinhloko.
- I-post-sinter geometry ayixoxiswana: Yonke ingxenye ye-MIM ihlolwa i-CMM ngokumelene nama-callout e-GD&T—hhayi nje ubukhulu. Sikala ukucaba endaweni evalayo ukuya ku-±1.2 µm, isilinda kumajenali e-shaft ukuya ku-0.8 µm, kanye nokuhwaqazeka kwendawo (Ra) ezindleleni eziwuketshezi kuya ku-≤0.4 µm—kuqinisekiswe nge-optical profilometry.
Abanye bangase baphikise ngokuthi imishini ye-CNC iletha ukunemba okungcono kune-MIM. Iqiniso - kumajiyometri alula. Kodwa zama ukubamba ukujula okungu-±0.015 mm kuwo wonke amabhore angama-coaxial amahlanu kusisekelo esisodwa sephampu yensimbi engenasici engu-316L, ngayinye enezintambo zangaphakathi nezimbobo zokuthambisa ezibhoboziwe. Ukucupha leyo ngxenye kudinga ukusetha okuyisithupha, izinguquko ezintathu zesakhiwo, kanye nokukhukhuleka okushisayo okungenakugwemeka. Inguqulo ye-MIM? Ingxenye eyodwa eluhlaza okotshani, i-sinter eyodwa, ukusebenza kwe-finish-turn-kanye ne-22% yezindleko eziphelele ngevolumu engaphezu kuka-500 pcs/ngonyaka. Siyakufakazela lokhu: ngekota edlule, silethe amarola ayi-1,200 T800 alloy center shaft ohlelo lwewintshi lwemoto yobunjiniyela. Konke kuphumelele ukuhlolwa komthwalo osebenzayo okungu-100% ku-18,500 N axial force—zero rework.
Lokho kuthembeka kuvela ekuhlanganiseni okuqondile ongakwazi ukukuqinisekisa. Isikhungo sethu asigcini nje ngomshini wokunyathelisa we-MIM nama-sinter furnaces—kodwa futhi nezikhungo ze-CNC ezinembayo ezikwazi ukuguqula izingxenye ze-CoCr ezicijile ku-85 HRC, amahhavini okushisa alinganiselwe ku-±2°C, kanye nemigqa yokuphefumula ehambisana ne-ASTM A967. Uma iklayenti lithumela umdwebo wepulaki ye-AMS 5387 enezimbobo eziyizimpumputhe kanye nobuso obuvaliwe obucijile, asibuzi ukuthi “Ungakwazi ukuwenza?” Siyabuza: "Isiphi isimo sokucindezeleka esibi kakhulu? Iyiphi impilo yesevisi elindelekile? Iyiphi imodi yokwehluleka ekugcina uphapheme?" Bese sikhetha isitokwe sokuphakelayo esilungile, silingise ukuhlanekezela kwe-sintering ku-Simufact Additive, sakhe isikhunta ngensimbi eqinile ye-H13 namashaneli okupholisa avumelanayo, futhi sikhiyele amapharamitha wenqubo ngaphambi kokudubula kokuqala.
Uma uhlola a i-mim metal injection molding process factory, yeqa izincwajana ezicwebezelayo. Cela: (1) amarekhodi e-sintering lot abonisa ukuhlukahluka kokuminyana kuwo wonke umsebenzi wokukhiqiza, (2) Imibiko ye-CMM eqhathanisa ne-as-sintered vs. geometry eqediwe engxenyeni efana neyakho, kanye (3) nobufakazi bokuqinisekisa impahla yebanga lakho elinembile lengxubevange—hhayi nje “i-ISO 13322-2 ethobela impushana.” Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., lawo madokhumenti awakhiyiwe kukhabethe lamafayela. Zinamathiselwe kuyo yonke i-PO, zibuyekezwa ngesikhathi sangempela, futhi kwabelwane ngazo ngaphambi kokugunyazwa kwamathuluzi. Ngoba ukunemba akuwona umnyango. Kuyisilungiselelo esizenzakalelayo.
