I-Micro investment casting inikezela ngentsimbi echanekileyo eyi-net-shape phantsi kwe-50 grams-kaninzi ilula njenge-0.5 g-nokunyamezelana okuqina kune-±0.05 mm kunye nokugqitywa komphezulu ukuya kwi-Ra 1.6 µm. Xa isitulo sakho sevalve yehydraulic kufuneka sitywine kwibhari engama-420, okanye umbhobho wempompo ye-cobalt yakho usinda kwi-800°C ukukhwela ibhayisekile ngobushushu ngelixa uxhathisa ukhukuliseko olusuka kudaka oluludaka, utyalo-mali oluncinci aluloncedo. Kuphela kwenkqubo ebambe ijometri, ukwakheka kweenkozo, kunye nekhemistri kwindawo yokutshixa kuyo yonke indawo.
Sivelise ngaphezulu kwe-17,000 yezinto ezincinci zokuphosa ukusukela ngo-2019-ubukhulu becala i-AMS 5387 cobalt alloy nozzles, i-T800-based based shaft rollers, kunye nezindlu zempompo zepiston yentsimbi engenanto ephantsi kwe-32 mm kowona mgangatho mde. Kwibhetshi nganye, sibona ubunyani obufanayo: umgangatho wotyalo-mali osemgangathweni uyasilela ngaphantsi kwe-10 g. Imfezeko ngundo iyawohloka. Ipateni yewax egqwethekileyo ingaphezulu kwe-3%. Iqokobhe leCeramic likwazi ukunyanzeleka. Ukuzaliswa kwesinyithi kuba yinto engalindelekanga. Kungenxa yoko le nto "i-micro" ingekho nje malunga nobukhulu-imalunga nokwenza kwakhona inkqubo yonke yekhonkco: ukwakhiwa kwe-wax, ulandelelwano lokwakhiwa kweqokobhe, i-dewax kinetics, i-preheat ramp rates, kunye nolawulo lokugalela oluncediswa ngu-vacuum.
Imigangatho emithathu yobugcisa yahlula utyalo-mali oluncinci lokwenyani ukusuka ekuthotyweni kwesiqhelo. Okokuqala, izixhobo zepateni kufuneka zibaleke kwi-±1.5 µm ukuphinda-phinda-hayi ±5 µm. Sisebenzisa iimolds zentsimbi ye-P20 eqinile kunye ne-electro-polished cavities kunye ne-injection-stabilized injection units. Okwesibini, iinkqubo zegobolondo zifuna ukwakhiwa kwemigangatho emihlanu: iingubo ezimbini zokuhlambela kunye ne-submicron zircon, iileya ezimbini eziphakathi kunye ne-silica edibeneyo, kunye neyokugqibela idyasi yesakhiwo kunye nokuhanjiswa kwamasuntswana alawulwayo. Okwesithathu, ukugalela kufuna ixesha langempela lokujongwa kweqondo lokushisa ngaphakathi kwe-± 3 ° C-kunye namanqanaba e-vacuum abanjwe kwi-0.08-0.12 mbar ngexesha lokuzaliswa. Tsiba nayiphi na kwezi, kwaye uya kufumana amaqoqo e-porosity kufutshane neendonga ezibhityileyo okanye isango elingaphelelanga ligcwalise iimpawu ezingaphantsi kwe-0.8 mm ubukhulu.
Abathengi bahlala bebuza: "Ngaba asikwazi nje umatshini we-CNC endaweni yoko?" Kwezinye iijometri-ewe. Kodwa qwalasela iplagi ye-AMS 5387 cobalt alloy enodonga oluyi-0.6 mm, umjelo wangaphakathi wokupholisa we-helical, kunye neendawo ezintathu zokutywina ezigxininisiweyo. Umatshini ulahla i-82% yezinto ezikrwada. Ubomi besixhobo buhla kwiindawo ezingama-47 ngokufaka i-carbide. Kwaye uxinzelelo olushiyekileyo olusuka ekusileni lubangela i-12 µm isaphetha kunyango lokugqibela lobushushu. Ukusatshalaliswa kotyalo-mali oluncinci kuqala kufutshane ne-net shape. Emva koko sifaka i-5-axis milling yasekhaya kuphela apho i-GD&T ifuna yona—njengobuso obutywiniweyo okanye iflange enyukayo. Isiphumo? I-63% yexabiso eliphantsi lezinto eziphathekayo, i-4.2 × ixesha lokujikeleza ngokukhawuleza, kunye nomngcipheko we-micro-crack propagation kwi-machining-induced subsurface umonakalo.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yakha isakhono sayo sotyalo-mali oluncinci malunga neendawo ezisebenzayo zobuthunywa-hayi izinto zaselebhu. Zonke iinqanawa zecandelo ezinokulandeleka ngokupheleleyo: inombolo yobushushu, iqashiso lewax, iqokobhe lokwakha ilog, irekhodi lokugalela, kunye nengxelo yeCMM efakwe kwimephu ye-ASME Y14.5 GD&T callouts. Siqinisekisa uzinzo lwe-dimensional kwimijikelo emithathu ye-thermal (-40 ° C ukuya +250 ° C) ngaphambi kokukhululwa. Ingqibelelo yomphezulu iqinisekiswa kusetyenziswa i-SEM-cross-sections-kungekhona nje ukuhlolwa okubonakalayo. Kwaye ewe-sivavanya yonke into ye-T800 ye-alloy yokusasazwa kwesigaba se-cobalt kusetyenziswa imephu ye-EDS, kuba umlinganiselo ongahambelaniyo we-gamma-beta uchaphazela ngqo ubomi bokudinwa kwi-winch center shafts.
Utyalo-mali oluncinci lusebenza ngcono xa ludityaniswe noqeqesho loyilo. Gwema iikona ezibukhali zangaphakathi-sebenzisa i-≥0.3 mm radii. Gcina umlinganiselo wobunzima bodonga ngaphantsi kwe-3: 1. Cacisa idrafti kuphela apho i-unmolding ifuna khona-i-0.25 ° yanele kwiigobolondo ezininzi ze-zircon. Kwaye ungaze uhlukanise iimpawu ezibhityileyo: zidibanise nobunzima ngeefillet okanye iimbambo ezixhasa ukomelela kweqokobhe ngexesha le-dewax. Siphonononga yonke imizobo yokutsala phambi kokuba sicaphule. Kwinyanga ephelileyo, siphawule i-0.45 mm undercut kwisitulo sevalve yoxinzelelo ebenokwaphula iqokobhe leceramic ngexesha ledewax yomphunga. Ukuyilwa ngokutsha kuthathe iiyure ezimbini. Ugcine umthengi iintsuku ezili-11 kunye ne-8,400 yeedola kwizixhobo ezilahliweyo.
Oku akukho malunga nokunciphisa iinkqubo zakudala. Kumalunga nokwakha ezintsha-umaleko ngokomaleko, imicron ngemicron, iqashiso ngeqashiso. Njengoko iimpompo ze-oilfield zifuna uxinzelelo oluphezulu, njengoko iinkqubo ze-hydraulic ziyancipha kwiirobhothi ezihambayo, kwaye njengoko i-cobalt-nickel alloys ityhala kwiimvilophu zenkonzo ye-900 ° C, ukutshintshwa kotyalo-mali oluncinci ukusuka kwi-niche ukuya kwimfuneko. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ijolise apho ukuchaneka kuhambelana nesiphumo: iindawo ezingalungeliyo-kodwa zisebenza, ziphile, kwaye ziphinde. micro investment casting iqala kancinci. Iphela apho ukuthembeka kungaxoxiswana.
