Anthu ambiri akamva 'makina opangira jakisoni wachitsulo' amajambula makina amodzi okha, omwe ndi mtundu wa makina osindikizira a 3D azitsulo. Ndilo lingaliro lolakwika loyamba. M'malo mwake, ndi dongosolo, ndipo makinawo, jekeseni, ndi gawo lowoneka bwino kwambiri. Nkhani yeniyeni imachitika pokonzekera chakudya, ng'anjo yowonongeka, ndi ng'anjo yotentha. Ndawona ma projekiti ambiri akuyimitsidwa chifukwa adapereka bajeti yomaliza makina opangira jekeseni wachitsulo koma anaiwala kunsi kwa mtsinje matenthedwe njira. Makinawa ndi syringe yolondola; ndi chemistry ndi chithandizo cha kutentha chomwe chimamanga gawolo.
Pakatikati pa Dongosolo: Zoposa Kungobaya Jakisoni
Tiye tikambirane za jekeseni. Sizili ngati kuumba jekeseni wa pulasitiki, kumene mumangosungunuka ndikuwombera. Chakudya apa ndi kusakaniza kofanana kwa ufa wachitsulo wabwino ndi chomangira cha polima. The mamasukidwe akayendedwe ndi lachinyengo. Ngati kutentha kwa mbiya yamakina anu kwazimitsidwa ngakhale ndi 10 ° C pamalo, mutha kupatukana - kutulutsa magazi pamwamba kapena kukhazikika kwa ufa. Ndimakumbukira nthawi yomwe tinkathamangira akalozera ang'onoang'ono, osapanga zitsulo zosapanga dzimbiri. Tidagwiritsa ntchito makina opangidwa ndi wopanga waku Germany, wolimba ngati chilichonse, koma tidapitilirabe kuwonongeka kwa laminar. Nkhani sinali kukakamiza kwa makina kapena mphamvu yochepetsera; chinali kapangidwe ka screw. Zinali zaukali kwambiri chifukwa cha kumeta ubweya wa feedstock. Tinayenera kugwira ntchito ndi wogulitsa zinthu kuti tiwongolere ma binder system. Kuthekera kwa makinawo kumatanthauzidwa ndi kugwirizana kwake ndi zinthu, osati matani ake okha.
Mphamvu ya clamp ndi ina. Anthu amatengeka nazo. Tikufuna makina a matani 50! Pazigawo zambiri za MIM, simusowa mphamvu yayikulu chifukwa mumadzaza tinthu tating'onoting'ono. Kulondola kuli mu metering, kuwongolera kuwombera, komanso kuthekera kosunga liwiro losasinthika, lapang'onopang'ono la jakisoni kuti mupewe jet. Vuto lodziwika bwino ndikugwiritsa ntchito jakisoni wothamanga kwambiri, womwe umatsekereza mpweya ndikupanga zing'onozing'ono zomwe zimangowoneka pambuyo pobaya. Mapulogalamu owongolera makinawa amayenera kulola kudzaza pang'onopang'ono, kwamasitepe ambiri. Ndi masewera abwino.
Ndiye pali kuvala kwa mbiya ndi zomangira. Metal ufa ndi abrasive. Ngakhale ndi zigawo zowumitsidwa, mukuyang'ana ndondomeko yokonza yomwe imakhala yovuta kwambiri kuposa mapulasitiki. Ndakoka zomangira patatha chaka ndikuthamanga 17-4 PH zosapanga dzimbiri zomwe zimawoneka ngati zamchenga. Imasintha kuchuluka kwa metering zone, zomwe zimakhudza kusasinthika kwa kuwombera. Simuphunzira zimenezo m’kabuku; mumaphunzira kuchokera pakudula mitengo yolemetsa kusintha kulikonse ndikuwona kusuntha.
The Make-or-break: Debinding and Sintering
Apa ndi pamene matsenga ndi mutu ulidi. Mutha kukhala ndi gawo lobiriwira labwino kwambiri makina opangira jekeseni wachitsulo, ndi kuwononga kwathunthu mu masitepe otsatirawa. Kuyika kwa catalytic, kusungunula zosungunulira, kutsekereza kwamafuta - chilichonse chili ndi zofunikira zake za ng'anjo ndipo chimalamula makina omangira omwe mwatsekeredwa. Nthawi ina tinayesa kusintha kuchokera ku feedstock yodziwika bwino kupita ku njira yotsika mtengo kuti tichepetse ndalama za kasitomala kupanga zida zamfuti. Chitsamba chatsopano chimagwiritsa ntchito chomangira chosiyana. Kuzungulira kwathu kwa ng'anjo, komwe takhala tikuchita kwazaka zambiri, kunali kolakwika. Ziwalozo zinachita matuza ndi kusweka chifukwa chiwopsezo chochotsa zomangira chinali chachangu kwambiri. Gulu lonse, magawo masauzande angapo, adachotsedwa. Makinawa adagwira ntchito yake mwangwiro; chidziwitso cha ndondomeko chinalephera.
Sintering ndiye kusintha komaliza. Mpweya wa ng'anjo (hydrogen, nitrogen-argon mix, vacuum) ndiyofunikira. Kwa kampani ngati Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd., ndi mbiri yawo yakuya pakuponya ndi kupanga ma alloys apadera, iyi ndi mphambano yofunikira. Amamvetsetsa zitsulo zotentha kwambiri. Kuthamanga kwa nickel-based kapena cobalt-based superalloys kudzera MIM ndi chilombo chosiyana ndi chosapanga dzimbiri. Kutentha kwa sintering, nthawi yogwira, ndi kuziziritsa kumapangitsa kuti makina omaliza azitha kupirira. Kutsika kumadziwikiratu, pafupifupi 15-20%, koma sizowoneka bwino. Mbali yayitali, yopyapyala idzachepa mosiyana ndi kanyumba kakang'ono. Mumalipirira izi pamapangidwe a zida, koma mufunika njira yopangira sintering kuti ikhale yolimba kwambiri kuti mukhulupirire zolipirirazo.
Apa ndipamene ntchito yophatikizika yokhazikika imamveka bwino. Mbiri ya QSY pakupanga ndalama komanso makina a CNC amawapatsa mwayi wapadera. Amamvetsetsa kupanga mawonekedwe apafupi ndi ukonde komanso kumaliza bwino. Mbali ya MIM nthawi zambiri imachokera ku sintering yomwe imafuna kukhudza kwa CNC-kubowola dzenje lenileni, ndikupukuta nkhope ya datum. Kukhala ndi ukadaulo wamakina m'nyumba kumatanthauza kuti atha kupanga njira ya MIM kuti ikwaniritse bwino lomwe sintered, kudziwa ndendende momwe idzamalizidwira. Ndikawonedwe kokwanira masitolo ambiri a MIM akusowa.
Zida: The Silent Partner
Palibe zokambirana za makina zomwe zatha popanda kulankhula za nkhungu. Zida za MIM ndizolondola kwambiri, nthawi zambiri zimakhala ndi mapangidwe ang'onoang'ono a magawo ang'onoang'ono awa. Kutulutsa mpweya ndikofunikira. Chifukwa chakudya chamafuta sichikhala chamadzimadzi, kutulutsa mpweya kumakhala kovuta. Tagwiritsa ntchito nkhungu zokhala ndi vacuum-assisted venting zolumikizidwa mwachindunji ku platen. Chitsulo cha nkhungu chiyenera kuumitsidwa, monga H13, koma chopukutidwa mpaka pagalasi. Kang'ono kakang'ono kalikonse kamayambitsa zizindikiro zokoka ndikuwonjezera mphamvu yotulutsa, zomwe zingathe kusokoneza mbali yobiriwira.
Njira zoziziritsira ndi luso lina losawoneka bwino. Mukufuna kukhazikitsa chomangira mwachangu kuti muchepetse nthawi yozungulira, koma kuzizira kofulumira kungayambitse kupsinjika. Ndawona zida zomwe timayenera kuyendetsa kutentha kozizira kosiyanasiyana m'malo osiyanasiyana kuti tikwaniritse kudzaza ndi kuziziritsa kwa gawo lovuta. Ndizobwerezabwereza. Mumayendetsa mapangidwe oyesera (DOE) pa makina opangira jekeseni wachitsulo: sinthani kutentha kwa sungunuka, kuthamanga kwa jakisoni, gwirani kuthamanga, ndi nthawi yoziziritsa, kenako yesani kuchuluka kwa gawo lobiriwira ndi kukula kwake. Kenako mumagwiritsa ntchito chidacho, mwina kuwonjezera chitsime chosefukira kuti mugwire zinthu zomaliza, ndikuyendetsanso DOE. Ndi kukambirana pakati pa magawo a makina ndi geometry ya chida.
Real-World Application and Material Nuances
Yang'anani m'mafakitale: azachipatala, mano, mfuti, masensa agalimoto, zamagetsi ogula. Mavoti a gawoli amatsimikizira kukwera mtengo kwamtsogolo kwa zida ndi kukonza ndondomeko. Zomwe zimagwiritsidwa ntchito nthawi zambiri zimakhala zomangira za chitsulo chosapanga dzimbiri kapena tsamba la nickel-alloy turbine turbine ya micro-drone. Kusankha kwazinthu, monga momwe QSY yaukadaulo wopangira ma aloyi apadera, ndi yayikulu. Koma chilichonse chakuthupi chimasiyana mosiyana. Titanium MIM imafuna ng'anjo yovumbulutsira kwambiri. Tungsten heavy alloys ali ndi ma protocol awo.
Kukongola kwa MIM ndikuphatikiza magawo angapo kukhala amodzi. Tinagwira ntchito yopangira jekeseni wamafuta agalimoto, mbali yomwe nthawi zambiri inkapangidwa kuchokera ku zidutswa zitatu zolumikizana pamodzi. Tidazipanga ngati gawo limodzi la MIM mu 316L zosapanga dzimbiri. Vutoli linali kukwaniritsa kufunikira kwapamwamba pamapaipi amafuta amkati mwachindunji kuchokera ku sintering, kupewa post-machining. Zinatenga miyezi kuti tisinthe kukula kwa ufa mu feedstock ndi sintering atmosphere kuti kuchepetsa porosity pamwamba pa mlingo wovomerezeka. Ntchito ya makinawo inali kupanga gawo lobiriwira lopanda cholakwika lomwe limatha kukhala maenje pambuyo pake.
Kulephera ndi mphunzitsi wamkulu. Kumayambiriro, tinali ndi polojekiti ya ceramic MIM (yomwe imagwiritsa ntchito makina omwewo). Tinkachitenga ngati chitsulo. Zolakwika. Kuwotcha kwa zomangira za ceramic kunali kosiyana kotheratu, ndipo kuchepa kwa sintering kunali kopitilira 25%. Ziwalozo zinapotokola kwambiri. Zinatiphunzitsa kuti makinawo ndi nsanja yosunthika, koma chidziwitso cha njira - maphikidwe otsekereza ndi opangira sintering - ndizinthu zenizeni komanso zosasunthika. Simungaganize ukatswiri muzitsulo zomasulira ku alumina kapena silicon carbide.
Kuphatikiza ndi Kuwona Kwamtsogolo
Ndiye kuti makina opangira jekeseni wachitsulo kukhala lero? Zikulumikizana kwambiri. Makina amakono aphatikiza kuwunika kwamayendedwe, kutsatira mbiri yapanthawi yowombera mu nthawi yeniyeni ndikufananiza ndi mapindikira agolide. Ngati zindikirani kuti mwayendetsa, imatha kuchenjeza woyendetsa gawo loyipa lisanapangidwe. Izi zikulowera ku Viwanda 4.0, komwe deta yochokera pamakina ojambulira, ng'anjo yotsekera, ndi ng'anjo yotentha zonse zimalumikizidwa ndi gawo lomaliza.
Kwa wopanga ngati QSY, kuphatikiza kwa MIM pamodzi ndi chipolopolo chawo choponyera, kuponya ndalama, ndi makina a CNC kumapanga mbiri yamphamvu. Makasitomala atha kubwera ndi chinthu chomwe chimakhala chovuta kwambiri kupanga, chokhala ndi voliyumu yapakati (10k-100k zidutswa pachaka), ndipo chimafunikira zida zogwira ntchito kwambiri. MIM imakhala yankho labwino. Atha kuyendetsa ulendo wonse: kapangidwe kagawo ka MIM, kusankha feedstock, kupanga zida, kuumba, debinding, sintering, ndi makina omaliza olondola - zonse pansi pa denga limodzi. Izi zimayendetsa bwino komanso zimachepetsa kukangana kwazinthu.
Pamapeto pake, makinawo ndiwothandizira kwambiri, koma ndi osayankhula popanda chilengedwe cha sayansi ya zinthu, uinjiniya wamatenthedwe, ndi zida zolondola. Luso lenileni siliri pakugwiritsa ntchito makina osindikizira; ndikudziwa momwe mungapangire unyolo wonse kuchokera ku ufa kupita ku gawo lakuchita. Ndicho chimene chimalekanitsa malo ogulitsa ntchito kuchokera kwa wopereka mayankho owona. Mumaphunzira kulemekeza dongosolo lonse, osati chida chokweza kwambiri chomwe chili pansi.
