Ake sikhulume nge-MIM. Metal Umjovo Molding. Uma uzungeze ukukhiqiza isikhathi eside ngokwanele, uzwile iphimbo: Kufana nokubunjwa komjovo wepulasitiki, kodwa okwensimbi! Lowo umugqa wezincwajana ocwebezelayo, lowo othengisa imishini futhi owenza abaphathi bajabule. Iqiniso, ukugaya kwalo kwansuku zonke, kubi kakhulu, kucashile, futhi ngokungagwegwesi, kuyathakazelisa kakhulu. Akuwona umlingo. Kungumdanso ocophelelayo wempushana, ipholimeri, ukushisa, nengcindezi, futhi igebe phakathi kwesibonelo esisebenzayo kanye nokugijima kokukhiqiza okunesivuno esikhulu yilapho uzuza khona imithende yakho. Izitolo eziningi zigxuma zicabange ukuthi wukushintshaniswa okuqondile kokutshala imali noma ukwenza imishini ye-CNC, futhi yilapho iqoqo lokuqala le-scrap ebizayo, e-sintered ivela khona.
I-Feedstock Conundrum: Konke Kuqala NgeGranule
Inhliziyo ye-MIM akuwona umshini wokubumba; yi-feedstock. Leyo ngxube ye-homogeneous ye-ultra-fine metal powder kanye nesistimu yokuhlanganisa izingxenye eziningi. Ngibone amaphrojekthi ema khona lapha. Awukwazi ukuvele ubambe impushana engu-316L kanye ne-generic wax-polymer binder futhi ulindele impumelelo. Ukusatshalaliswa kosayizi wezinhlayiyana, ukwakheka, okuqukethwe komoyampilo—kunquma ukuminyana kokugcina kwe-sintered kanye nokuzinza kwe-dimensional. Uzakwethu ofana ne-Qingdao Qiangsenyuan Technology (QSY) uthola lokhu. Ngesizinda sabo esijulile sokutshala izimali kanye nama-alloys, bayaqonda ukuziphatha okubonakalayo ngaphansi kokushisa. Uma bethola ukudla kwengxenye yezokwelapha ye-cobalt-chrome, abagcini ngokuthenga impahla; bahlola impendulo yayo yokuhlanganisa kanye ne-sintering ngokusekelwe emashumini eminyaka okuphatha ama-alloys akhethekile afanayo.
Futhi i-binder? Kuyi-scaffold yesikhashana. Umsebenzi wayo ukugeleza kahle ngesikhathi sokujova, bese inyamalala ngokuphelele ngaphandle kokuhlanekezela ingxenye ensundu entekenteke. Ukukhetha okungalungile kuholela ekulimaleni okuyinhlekelele: amabhamuza, ukuwohloka, noma ukuqhekeka okuyinhlekelele ngesikhathi sokubopha okushisayo. Iresiphi oyilungisayo phakathi neminyaka. I I-MIM inqubo ayithetheleli lapha—ukuchezuka okungu-0.5% ekwakhekeni kwe-binder kungasusa wonke umthwalo wesithando somlilo.
Lokhu sikufunde kanzima ekutholeni indawo yokuqala yezinzwa ze-aerospace. Ijiyomethri yayiyinkimbinkimbi, inezindonga ezincane. Umhlinzeki wethu we-feedstock wesigaba sokuqala usiqinisekise ukuthi isibophezelo sabo esijwayelekile sisebenza emhlabeni wonke. Izingxenye ezibunjiwe zazibukeka ziphelele. Khona-ke, esigabeni se-catalytic debinding, avuvukala njengamaphophukhoni. I-kinetics yokususa i-binder ibingalungile engxenyeni yethu ephambanayo. Kwadingeka sibuyele emuva, sisebenzisane nochwepheshe ukuze sithunge uhlelo. Yilokho izindleko ezifihliwe. Okwangempela I-MIM ubuchwepheshe ngokuvamile buhlala kulawa manuances wesayensi yezinto ezibonakalayo, hhayi ekusebenzeni umshini wokunyathelisa.
Ukubumba: Lapho Ipulasitiki Ihlangana Nensimbi (Futhi Izinkinga Ziqala)
Kulungile, unesitoko sakho sokuphakelayo. Manje uyawujova. Lokhu kuzwakala kujwayelekile kunoma yimuphi umshini wokubumba wepulasitiki, kodwa kunomehluko obalulekile. I-viscosity encibilikayo iphakeme, izwela kakhulu izinga lokushisa. Ulwa nokuhlukaniswa kwe-powder-binder (iphupho elibi elibizwa ngokuthi i-slumping) uma amapharamitha avaliwe. Ukusetshenziswa kwamathuluzi kudinga ukulandisa ngokuncipha okuphezulu kakhulu, nokungafanani, kamuva—ngokuvamile u-15-20%, hhayi u-0.5% owuhlelela kupulasitiki noma ngomshini.
Umklamo wesango ubalulekile. Udinga ikhefu elihlanzekile, kodwa impahla iyaqhuma. Ngibone isikhunta sensimbi siguga ngokushesha I-MIM feedstock kunenayiloni egcwele ingilazi. Ukukhipha umoya ngesinye isilo. Umoya ovalelekile awubangeli nje iphutha lezimonyo; ingakha ukuminyana okuba indawo yokuqala ukuqhekeka ngemva kokucwilisa. Yilezi zinqubo ezincane ezinikezwayo lapho izinto zihlukana khona. Ingxenye ebunjwe kahle iyingxenye nje eluhlaza, egcwele isibopho. Inamandla kashizi oqinile. Ukuyiphatha kudinga ama-racks namathreyi athile; ukudlulisa okukodwa okuxakile futhi uthola isici esimise okwezigxivizo zeminwe okubonisa kuphela i-post-sinter.
Yilapho izitolo ezihlanganisiwe zinomkhawulo. Bheka ukusethwa kwe-QSY (https://www.tsingtaocnc.com). Ababona nje a I-MIM indlu. Banomshini wokusakaza kanye ne-CNC endlini. Kungani lokho kubalulekile? Ngoba bangakwazi ukuklama isikhunta becabangela ukuhlanekezelwa kwe-sintering kanye nomgomo wokugcina we-net-shape kusukela osukwini lokuqala. Baqonda ama-engeli asalungiswa, ukuguquguquka kokuqina kodonga, nokugxilwa kwengcindezi ngombono wokwakha insimbi, hhayi nje ukubumba ipulasitiki. Ithimba labo le-CNC lingakwazi futhi ukufaka umshini wokufaka isikhunta ekubekezeleni okwedlulele okudingekayo, futhi kamuva, lenze umshini wesibili engxenyeni ehlanganisiwe uma isici esibalulekile siyidinga. Lokho kuhlanganiswa okuqondile kwehlisa igeyimu yokusola phakathi kokubumba, i-sintering, kanye nabathengisi bomshini.
Uhambo Olude, Olunensayo Esithandweni Somlilo
I-Sintering. Isigaba sokwenza noma sekhefu. Yilapho i-binder isuswa khona futhi izinhlayiya zensimbi zihlangana. Kungumjikelezo wezinsuku ezishisayo, hhayi ukubhaka okusheshayo. Ukubopha kuqala, kancane, ukugwema ukwakheka kwengcindezi ngaphakathi kwengxenye. Khona-ke izinga lokushisa liyenyuka lifinyelele eduze nendawo yokuncibilika kwensimbi. Ukulawulwa komkhathi yikho konke. Ukuvuza okuncane okwethula umoya-mpilo kungakhipha ingxenye yakho yensimbi engagqwali, konakalise ukumelana kwayo nokugqwala. Kuma-alloys asebenzayo afana ne-titanium noma amanye ama-superalloy asuselwa ku-nickel, umkhathi wesithando somlilo udinga ukuba ube umshini ocwebezelayo noma i-argon elawulwa kakhulu.
Izingxenye zihlala kumasethi e-ceramic, okumele abe flat ngokuphelele futhi ahambisane namakhemikhali. Ngikhumbula inqwaba yamasethi e-alumina ayenokungcoliswa okuncane kwendawo. Emazingeni okushisa aphezulu, basabela ngezingxenye ze-Inconel, bazishisele ku-setter. Ukulahlekelwa okuphelele. Iphrofayili yesithando somlilo—amanani erempu, izikhathi zokucwiliswa emanzini—idinga ukuthuthukiswa engxenyeni ngayinye yejometri kanye nengxubevange. Ingxenye ewugqinsi kanye nengxenye ezacile engxenyeni efanayo izoba ngamanani ahlukene, ibangele i-warpage. Ulwa nalokhu ngokulungisa okuhlakaniphile kwesinye isikhathi, noma ngokuklama ingxenye ukuthi ibe nogqinsi olufana nolwando, okungenzeki ngaso sonke isikhathi.
Lesi yisigaba lapho i-QSY's 30 years in casting ikhokha khona izabelo. Baqonda ukuguqulwa kwe-metallurgical, ukukhula okusanhlamvu, kanye nendlela yokuphatha ukushisa ukuze kuncishiswe ingcindezi eyinsalela. Izimiso ziyadluliswa phakathi kokutshala izimali kanye I-MIM ukucula. Bayazi ukuthi kwenzekani ku-cobalt-chrome ku-1300 ° C. Lolo lwazi lwesikhungo luvimbela imililo eminingi yokulinga namaphutha.
Ukuhlola Kwangempela: Ukucubungula Kwangemuva kanye Nenganekwane Yomumo We-Net
Nansi imfihlo engcolile ye-MIM: I-Net-shape yitemu lokumaketha. Ezingxenyeni eziningi ezisebenzayo, i-near-net-shape. Ngemuva kokucubungula, cishe njalo udinga ukucutshungulwa kwangemuva. Ngokuvamile kuba khona ukukhanya okukhanyayo ukuze kucishwe. Ukubekezelela kobukhulu kungase kube +/-0.3% kubukhulu be-sintered, kodwa kubhore edinga ukulingana ne-H7? Cishe uzowenza ngomshini. I-EDM ingase idingeke kuzici ezincane, ezinembayo ezihlanekezelwe.
Isiphetho esingaphezulu esiphuma esithandweni siwukuthungwa okusanhlamvu, okusanhlamvu. Ezinhlelweni eziningi, lokho kulungile. Ukuze uthole ingxenye yokusingatha uketshezi edinga indlela yokugeleza ebushelelezi, uzodinga ukupholisha noma ukupholisha nge-electropolis. Lokhu kwengeza izindleko nesikhathi. Lapho uhlola I-MIM, kufanele ubeke isabelomali salo msebenzi wesibili. Akubona ubuthakathaka benqubo; kuyiqiniso lobunjiniyela. Umgomo ukuwunciphisa, ukuze uthole u-95% wejometri kusuka esikhunjeni, ukuze isikhathi sakho somshini we-CNC (kanye nezindleko) engxenyeni ebizayo ye-sintered sincane.
Lezi yi-synergy QSY leverages. Ingxenye iphuma esithandweni somlilo. I-QC yabo iyayihlola. Uma izici ezimbalwa ezibalulekile zedathamu zidinga ukuqiniswa, iqonda ngqo emnyangweni wabo we-CNC. Akukho ukubambezeleka kokuthunyelwa, akukho i-oda elisha lokuthenga, abukho ubungozi bamaphutha okuxhumana. Baphatha ingxenye ye-sintered njengefomu langaphambili, futhi ubuchwepheshe babo bokwenza imishini obuvela kweminye imikhakha busebenza ngokuqondile. Iguqula inganekwane yomumo wenetha ibe isu elilawulwayo, elisebenzayo lezinyathelo ezimbili lokukhiqiza.
Lapho I-MIM Izwakala (Futhi Uma Ingenzi)
Ngakho, ngemva kwakho konke lokhu, i-MIM ikhanya kuphi? Akukona okwakho konke. Ikhanya ngevolumu ephezulu, izingxenye zensimbi ezinosayizi omncane kuya-omaphakathi. Cabanga ngezingxenye zesibhamu, imihlathi yethuluzi lokuhlinza, amabhokisi egiya ezindizayo, izibophelelo eziyinkimbinkimbi. Izingxenye ezingaba yiphupho elibi uma zisuka eziqinile, noma lapho ukutshala imali kungakwazi ukubamba imininingwane emihle noma izindonga ezincane. Ezomnotho zisebenza uma wenza izinkulungwane, hhayi amakhulu, ngenxa yamathuluzi angaphambili nezindleko zokuthuthukisa inqubo.
Izabalaza nezingxenye ezinkulu kakhulu (imikhawulo yosayizi wesithando somlilo), izimo ezilula kakhulu (zifake ngomshini nje), noma ngama-alloys athile okunzima kakhulu ukucwilisa ukuze kube nokuminyana okuphezulu. Kungase futhi kungabi yisinqumo esingcono kakhulu uma impahla yakho iyinsimbi evamile enekhabhoni ephansi futhi udinga izingcezu ezingama-500 kuphela; ukusika kwe-laser nokushisela kungase kungabizi.
Okubalulekile wukuhlanganyela kusenesikhathi. Ungavele uthumele umdwebo oqediwe ngomshini bese ucela a I-MIM caphuna. Idizayini idinga ukuthuthukiswa ngenxa yenqubo—izindonga ezifanayo, irediya evulekile, ukunaka isango nezindawo zephini lokukhipa. Uzakwethu omuhle uzokwenza isibuyekezo se-Design for MIM (DFM). Ngokwalokho engikubonile kokusebenza okufana ne-QSY, lokho kubuyekezwa kwaziswa amandla abo okusebenza kwensimbi okugcwele. Bangase baphakamise indlela ye-hybrid: I-MIM ingqikithi eyinkimbinkimbi ngendlela emangalisayo yengxenye, bese mshini isixhumi esibonakalayo sokukhwelana sisuka kubha esenziwe bese uyibhsa noma uyishisele. Lokho kuwukucabanga okusebenzayo nokunokuhlangenwe nakho.
I-MIM ayilona inguquko eshintsha yonke into. Elinye ithuluzi elinamandla ebhokisini lamathuluzi lokukhiqiza. Inani layo alivulwa ngokuyibona njengesimangaliso esizimele, kodwa ngokuyihlanganisa ekuqondeni okubanzi kwezinsimbi, indlela eziziphatha ngayo, nendlela ezilolongwa ngayo. Izitolo eziyithola kahle yilezo, njenge-QSY, ezihlonipha lonke uhambo olusuka kumpushana ukuya engxenyeni eqediwe, futhi abanezibazi-kanye nempumelelo-yokuhamba kuleyo ndlela ngokoqobo.
