Ukuba ujikeleze ukwenza ixesha elide ngokwaneleyo, uvile i-pitch ye-Metal Injection Molding (MIM). Ihlala ithengiswa njengale nkqubo yomlingo enokwenza nayiphi na indawo entsonkothileyo, encinci yentsimbi ngokulula kokubumba iplastiki. Yindawo yokuqala apho abantu bakhubeka. Ayingomlingo, kwaye ngokuqinisekileyo ayiyonxalenye yayo. Inyani ngumdaniso omdaka, othathelwe ingqalelo kwiinkcukacha phakathi komgubo wesinyithi kunye nemigaqo yokubumba inaliti yeplastiki, enendawo eninzi yokuba izinto zihambe ecaleni ukuba awuyihloniphi imida yenkqubo. Ndibone iiprojekthi ezininzi kakhulu zintywila ngenxa yengoma ye-siren entsonkothileyo kunye nevolumu, kuphela ukuba yonakele elunxwemeni lokugqwetheka okanye ukungangqinelani kwemfuyo.
Undoqo we-MIM: Konke malunga ne-Feedstock kunye neBinder
Masiqale apho inkqubo iqala khona: i-feedstock. Lo ayingomgubo wentsimbi nje oxutywe neplastiki. Ngumxube we-homogeneous womgubo wesinyithi ocoleke kakhulu, ongqukuva-cinga nge-microns ezingama-20 okanye ngaphantsi-kunye nenkqubo yokubopha izinto ezininzi. Isibophelelo yiglu yethutyana. Ukufumana lo mxube ulungile yi-80% yedabi. Ukuba umgubo awusasazwanga ngokugqibeleleyo, ufumana i-gradients. Kwi-sintering, loo ndawo iya kugoba njenge-chip yezambane. Ndikhumbula iprojekthi yecandelo lesikere sotyando apho sasilwela iiveki kunye nomthengisi omtsha wealloy. Iqashiso lomgubo belinokuhanjiswa kobungakanani besuntswana eyahlukileyo. Yayijongeka ilungile kwingxelo yelebhu, kodwa iindawo ezibunjiweyo zazinembonakalo engaqhelekanga, egreasy. I-Sintered, babe brittle. Umoni? Utshintsho kwindawo ephezulu yomgubo iguqule indlela emanzisa ngayo i-binder, ekhokelela ekuhlukaneni kwe-binder ngexesha lokubumba. Utshintsho oluncinci, ukusilela okukhulu.
Emva koko kukho ukubumba ngokwayo. Ugalela le feedstock yegranulated kwisixhobo esinokuxabisa i-$50k ukuya kwi-100k yeedola. Ijongeka kwaye ivakale njengokubumba inaliti yeplastiki, kodwa iiparamitha zahlukile. I-viscosity enyibilikayo iphezulu, kwaye ujongene ne-abrasive material. Ukunxitywa kwesixhobo yindleko yokwenyani, rhoqo. Awukwazi ukuseta umatshini kwaye ulibale. Siqhuba izifundo zobuchule benkqubo (Cpk) kuwo wonke umlinganiselo obalulekileyo ukusuka kukudubula kokuqala. Nangona kunjalo, ibhendi yesifudumezi iyasilela kumgqomo, iprofayile yobushushu iyatshintsha, kwaye ngequbuliso uxinzelelo lwakho lwenaliti lucimile, lubangela i-voids encinci. Ezo voids zinokungabonakali de kube semva kokuntywila, njengemingxuma engaphezulu.
Isinyathelo sokuqhawula kulapho inxalenye yokubumba inaliti iphela kwaye inxalenye yentsimbi iqala. Le yinkqubo ecothayo, enonyameko yeekhemikhali okanye i-thermal ukususa isibophelelo sokuqala. Yikhawulezise, kwaye ufumana iintanda okanye amadyunguza. Linyathelo abaninzi abafikayo abalijongela phantsi, becinga ukuba ngumjikelo nje weziko lomlilo. Kufana nokubola okulawulwayo. Emva koko, ushiyeka nenxalenye emdaka—ithambo lesikelethoni esiethe-ethe, esinezingxobo somgubo wentsimbi esidityaniswe sisibophelelo somqolo. Lixesha lokubamba-ngenkathalo.
Sintering: Inqaku lokungabuyi
I-Sintering yintliziyo yenkqubo ye-MIM. Kulapho indawo emdaka iba yinxalenye yentsimbi eyomeleleyo. Uyifudumeza kwisithando somlilo esilawulwayo—esidla ngokuba yi-hydrogen okanye ivacuum—ukuya kutsho ngaphantsi kwendawo yokunyibilika kwesinyithi. Amasuntswana adibanisa. Inxalenye iyacutheka, ngokuqikelelwayo kwaye ngokufanayo, uyathemba. Sithetha malunga nokuncipha, okuqhelekileyo malunga ne-15-20%, ehlawulelwa ngokuchanekileyo kuyilo lokungunda. Kodwa okunokuxelwa kwangaphambili ligama lethiyori.
Ndasebenza kwicandelo elinomthamo ophezulu wokutshisa imipu. Inxalenye yayiyintambo ende, ebhityileyo. Kwisithando somlilo, iinxalenye zixhaswa kwiisethi ze-ceramic. Ukuba i-setter ayithe tyaba ngokugqibeleleyo, okanye ukuba iziko linendawo eshushu, loo ndawo inde inokuntywila phantsi kobunzima bayo ngexesha leplastiki ye-sintering. Sasinebhetshi apho i-30% iphume kunye ne-curvature encinci. Akwanelanga ukuba ungaphumeleli i-go/no-go gauge ngokukhawuleza, kodwa ngokwaneleyo ukuchaphazela uxinzelelo lwasentwasahlobo kwindibano yokugqibela. Oyena nobangela? Umzila kaloliwe wokuthutha ogugileyo kwisithando somlilo esibangela ukungcangcazela okungaqondakaliyo ngexesha lobushushu obubalulekileyo. Kwathatha iintsuku ukujonga yonke into ngaphambi kokuba siyifumane.
Umoya wolunye uguquko oluthe cwaka. Kwinsimbi engenasici ye-17-4PH, udinga uxinzelelo oluyinxenye lwento yokulawula umxholo wekhabhoni, ochaphazela ngokuthe ngqo ubunzima bokugqibela kunye nokumelana nokugqwala. Ukuvuza okuncinci kumnyango wesithando somlilo kuzisa ioksijini, kwaye ufumana i-oxidation yomphezulu enokuthi bonakalise ubomi bokudinwa. Awuyiboni de wenze uvavanyo lwesitshizi setyuwa. Ngolu nxibelelwano lufihliweyo olwahlula ivenkile eqhuba nje iinxalenye kwenye ezenza iinjineli.
Apho I-MIM Ingena kwaye Apho Ingangeni khona
I-MIM ayisiyonto ithatha indawo yokwenza oomatshini okanye ukutyala imali kuyo yonke ibhodi. Indawo yayo emnandi inzima, incinci ukuya kwephakathi (cinga ngaphantsi kwe-100 grams, kaninzi ngaphantsi kwe-25 grams) ezifuna imveliso ekufutshane ne-net-shape kwimiqulu ukusuka kwi-10k piece ngonyaka ukuya phezulu. Cinga amacandelo ezixhobo, izibiyeli zamathambo, iinxalenye zompu, izihlanganisi. Ukuba unokuwumatshini ngokulula ukusuka kwisitokhwe sebha kwimisebenzi emibini, i-MIM mhlawumbi ayinaxabiso-kukhuphisana, nokuba kumthamo. Iindleko zezixhobo ngumqobo.
Kodwa ngenxalenye efana nendlu encinci yensimbi engenasici kunye nemicu yangaphakathi, imingxuma esecaleni, kunye neendonga ezincinci? Kulapho iMIM ikhanya khona. Ubumba zonke ezo mpawu kwisitofu esinye. Enye indlela inokuba yi-multi-axis CNC eyenza ibhillet encinci, enenkunkuma enkulu kunye namaxesha okucotha komjikelo. Ndikhumbula ndivavanya indawo yesixhobo samazinyo. Yayifana nephazili yentsimbi encinane entsonkothileyo. Iindleko zoomatshini zazilingana neenkwenkwezi kwaye zinemiba yokunyamezelana. I-MIM iyizise kuluhlu olunokwenzeka, nangona kuye kwafuneka sihlengahlengise iikona zangaphakathi ukunqanda imiba yokupakisha umgubo ngexesha lokubumba.
Iimpawu zezinto eziphathekayo zihlala ziyingongoma yengxoxo. Inxalenye ye-MIM ene-sintered ikholisa ukuba yi-95-99% yoxinaniso lwemathiriyeli ekhandiweyo. Kwizicelo ezininzi, iipropathi zoomatshini zingaphezulu kokwanela. Kodwa ukuba ufuna ukomelela kokugqibela okanye ukomelela okuhambelana nenxalenye eyenziweyo, iMIM inokungakufiki apho. Lurhwebo-off. Urhweba isuntswana lentsebenzo yokugqibela yokuntsonkotha koyilo kunye nexabiso leyunithi kwisikali.
Ukuxhawula ngesandla ngoMatshini: Kutheni amaqabane athanda i-QSY Matter
Eli linqaku elibalulekileyo elisoloko liphoswa: zimbalwa kakhulu iindawo ze-MIM ezibubume bomnatha. Uninzi lufuna imisebenzi yesibini. Kulapho ukuba neqabane elinamandla anzulu asezantsi akulunganga nje; ibalulekile. Thatha inkampani efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY). Ujonge kwimbali yabo-iminyaka engaphezu kwama-30 besakha kunye nomatshini. Loo nto ikuxelela into. Xa ndifumana iinxalenye ze-MIM okanye ndisebenzisana nesibumbi, andithengi nje inkonzo ye-sintering. Ndithenga ukukwazi ukuphatha lonke uhambo.
Imeko eqhelekileyo: sifaka i-316L icandelo levalve yensimbi engenasici. Ifuna ukudinwa okubalulekileyo okubanjelwe kunyamezelo lwe +/- 0.013mm, isiphelo somphezulu esingenakufikelelwa yi-MIM iyodwa. Inkqubo ye-MIM isifumana i-95% apho, kunye nokunciphisa okulawulwayo. Emva koko, siyithumela kwivenkile efana ne-QSY yokuchaneka komatshini we-CNC kweso sinye. Amava abo ngemathiriyeli efanayo evela kubo utyalo mali kwaye iqokobhe ngundo ukuphosa umsebenzi kuthetha ukuba bayayiqonda isinyithi. Bayayazi indlela yokulungisa indawo ene-sintered (ayiqinile njengendawo engenanto), yintoni eyondlayo kunye nesantya esinokusetyenziswa kwi-porous kufuphi ne-net-shape geometry, kunye nendlela yokugcina uxhathiso lwe-corrosion ye-stainless emva komatshini. Ukuzama ukwenza oko ngevenkile yoomatshini begeneric yiresiphi ye-scrap kunye nentliziyo ebuhlungu.
Umsebenzi wabo nge-alloys ekhethekileyo-ialloys esekwe cobalt, ialloys esekwe nickel-yenye iqhosha lokungenana. Ezi ziqhelekileyo kwi-MIM kwizicelo zonyango kunye ne-aerospace. Banzima kumatshini. I-molder enokuthi i-sinter Inconel 718 kunye ne-machinist enokuyigqiba iyindibaniselwano enamandla. Ilungelelanisa ikhonkco lonikezelo kwaye, okona kubaluleke kakhulu, iqinisekisa ukuba umgangatho wokuphendula awuhlulwanga phakathi kwabathengisi abathathu abahlukeneyo betyholana. Ungazifumana kwiqonga labo, https://www.tsingtaocnc.com, echaza amandla abo okusebenza. Olo ludibaniso luthi lujike inxalenye elungileyo ye-MIM ibe yinto ethembekileyo, esebenza kakhulu.
Izifundo ezivela kwi-Trenches: Ukungaphumeleli okufundise ngaphezu kwempumelelo
Mandabelane ngokusilela okucacileyo. Kwangoko, sasineprojekthi ye-drone camera gimbal bracket kwi-17-4PH. Le ndawo yayinengalo ecekethekileyo, enenkonkxa. Uyilo lujongeka kakuhle kwiscreen. Amanqaku okuqala aphumelele ukuhlolwa. Malunga namaqhekeza angama-50,000 kwimveliso, saqala ukufumana imbuyekezo yengalo eqhekekileyo. Uhlalutyo lokungaphumeleli lubonise i-porosity ephakathi kunye nombindi wengalo, esebenza njengento yogxininiso loxinzelelo.
Ukuxilongwa kwesidumbu kwakubuhlungu kodwa kuyafundisa. Umba wawukuyilo lokungunda. Isango-apho i-feedstock ingena khona kumngxuma-yaye yabekwa ukuze kube lula ukuyisusa, kungekhona ukuhamba kakuhle. Kuloo ngalo ibhityileyo, ibangele ukuthandabuza okuncinci kwi-flow front ngexesha lokutofa. Loo micro-hesitation yavumela umgubo kunye ne-binder ukuba zahlule nje iqhezu, okukhokelela ekuhlukeni kobuninzi. Kwi-sintering, olo tshintsho lwaba yinto efihlakeleyo, i-intergranular pore structure. Ayikhange ibanjwe luxinaniso oluqhelekileyo okanye iX-reyi kumyinge wethu wesampulu. Yasilela kuphela phantsi kokudinwa okuguquguqukayo kwintsimi.
Ukulungiswa kwakubiza: isikhunta esitsha esinesango elilungisiweyo kunye nenkqubo yembaleki eshushu yokulawula ukuhamba kakuhle. Indifundise ukuba nge-MIM, zonke izigqibo zoyilo-indawo yesango, ukuguqulwa kodonga, i-radii yekona-inomgca othe ngqo kwisiphumo se-microstructural. Awuyila nje inxalenye; Uyila indlela yokuhamba yomgubo we-binder slurry kunye nokudityaniswa kwayo okulandelayo bubushushu. Ngumngeni wobunjineli benkqubo oguqulwe njengenkqubo yokwenza isinyithi.
Ke, xa abantu bebuza ukuba iMetal Injection Molding ilungile na kwiprojekthi yabo, impendulo yam ayikhe ibengu-ewe okanye hayi. Luthotho lwemibuzo malunga nejometri, umthamo, i-specs yemathiriyeli, kwaye, ngokubaluleke kakhulu, kwenzeka ntoni emva kokuba inxalenye ishiya iziko lomlilo. Sisixhobo esinamandla, kodwa sichanekileyo. Kuya kufuneka uqonde ulwimi lwayo-ulwimi lwe-feedstock, i-sintering atmospheres, kunye ne-isotropic shrink-kwaye ufuna amaqabane athetha iilwimi ezikufutshane zokwenza machining ngokuchanekileyo kunye ne-metallurgy ukwenza icwecwe lokugqibela licule. Lihlabathi lokwenyani le-MIM, kude neencwadana ezimenyezelayo.
