Mukamva 'stainless steel steel injection molding' kapena MIM, mawu ake nthawi zonse amakhala ovuta komanso mawonekedwe ake. Koma popeza ndakhala ndi izi kwakanthawi, ndapeza kuti nkhani yeniyeniyo mulibe m'kabuku konyezimira; zili mwatsatanetsatane kupanga 17-4PH bracket kukhala ndi 0.005 tolerance batch pambuyo pa batch, kapena chifukwa chake gawo lopangidwira makina nthawi zambiri limalephera momvetsa chisoni mukasinthira ku MIM. Pali malingaliro olakwika ofala akuti MIM ndimangopanga jakisoni wa pulasitiki wokhala ndi ufa wachitsulo - sichoncho. Magawo a debinding ndi sintering amayambitsa zosintha zomwe zimatha kutsitsa ngakhale akatswiri odziwa ntchito kwambiri. Ndi chilombo chosakanizidwa, chokhala pakati pa kupanga ndi kukonza, ndipo chimafuna kulemekeza buku lake lapadera.
Kuvina Kwazinthu: Sizitsulo Zosapangana Zake
Simunganene chitsulo chosapanga dzimbiri ndikuchitcha tsiku. Za kuumba jekeseni wachitsulo, makhalidwe ufa ndi chirichonse. Kugawidwa kwa tinthu tating'ono, mawonekedwe, ndi kuyenda ndi makina omangira kumapanga kapena kuswa gawolo. Takhala tikugwira ntchito ndi 316L ndi 17-4PH makamaka, koma ngakhale m'makalasi amenewo, wopereka ufa wosiyana amatha kusintha chinthu chonsecho. Ndikukumbukira pulojekiti yopangira zida zopangira opaleshoni pomwe choyimiracho chimafuna 316L kuti chiteteze dzimbiri. Magulu angapo oyambilira adachita bwino kwambiri, koma mphamvu ya kutopa inali itatha. Zikuoneka kuti mpweya wa okosijeni mu ufa, chinachake chimene sitinafufuze mokwanira, chinali chokwera kwambiri, zomwe zinapangitsa kuti zisawonongeke. Tidasinthira ku ufa wopangidwa ndi gasi wokhala ndi cholimba kwambiri, ndipo zidathetsa. Ndi ma nuances awa omwe amalekanitsa mawonekedwe ndi gawo lokonzekera kupanga.
Apa ndipamene kukhala ndi mbiri ya ntchito zachitsulo zambiri kumakhala kofunika kwambiri. Kugwira ntchito ndi mnzanu ngati Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd., yemwe ali ndi zaka makumi ambiri akuponya ndalama ndi CNC Machining zitsulo zosapanga dzimbiri ndi ma aloyi apadera, mumapeza chidziwitso chokhazikika. Sikuti amangokanikizira ufa; amamvetsetsa momwe chitsulo chimakhalira pansi pa kutentha ndi kupsinjika kuchokera kumakona angapo opanga. Kudziwa kwapang'onopang'ono kumeneku kumadziwitsa kachitidwe kabwino ka MIM - podziwa, mwachitsanzo, momwe sintered 304 ingachitire mosiyana ndi ntchito ya CNC yotsatizana poyerekeza ndi yofanana nayo.
Gawo lochotsa zomangira ndiye wakupha mwakachetechete. Kuthamanga kwambiri, ndipo mumapeza ming'alu kapena matuza; mochedwa kwambiri, ndipo mukupha ng'anjo yanu ndi mtengo wake. Kwa zitsulo zosapanga dzimbiri, kuwongolera kaboni panthawi ya debinding ndikofunikira. Siyani zotsalira za carbon yambiri, ndipo mumakhudza kukana kwa dzimbiri - chifukwa chomwe mwasankha zosapanga dzimbiri poyamba. Taphunzira izi movutirapo pa ntchito yoyambirira yopangira zida zam'madzi. Mbali zina zidadutsa macheke koma zidalephera kuyesa kopopera mchere. Choyambitsa chinali kusakwanira kwa matenthedwe a kutentha komwe kunasiya mpweya kumbuyo, ndikuchotsa chromium kwanuko. Njira yowunikiridwa, yowongoleredwa yamitundu yambiri idakonza. Ndi chikumbutso kuti mu MIM, simukungopanga zitsulo; mukumanganso mozama mawonekedwe ake kuchokera ku ufa.
Mapangidwe a MIM, Osati Zongogwira Ntchito
Uku ndiye kukangana kwakukulu ndi akatswiri opanga mapangidwe. Amapereka gawo lopangidwira makina kapena kupanga ndalama ndipo amayembekezera kuti MIM ingopanga. Izo sizimagwira ntchito monga choncho. Uniform khoma makulidwe ndi uthenga wabwino. Tinali ndi kasitomala amaumirira pa flange yokhala ndi nsonga yokhuthala komanso zipsepse zopyapyala. Gawolo linagwedezeka ngati chipwirikiti cha mbatata pa sintering chifukwa kusiyana kwake kunali kwakukulu. Tinayenera kubwereranso, kukambitsirana kuwonjezera ma gussets ang'onoang'ono ndikukulitsa pang'ono zipsepsezo, zomwe zinawonjezera kulemera kosawerengeka koma kupulumutsa geometry yonse. Zida zinayenera kusinthidwa, ndithudi. Ndi kuvina kogwirizana, nthawi zina kobwerezabwereza.
Zinthu monga ma undercuts ndi ulusi wamkati ndi komwe MIM imawala, koma imafunikira zida zanzeru. Kuyika pini ya ejector pagawo lopanda banga ndizovuta kwambiri kuposa pulasitiki - mutha kusiya zikwangwani zowoneka kapena kuyambitsa kupindika pagawo lobiriwira. Ndikukumbukira kagiya kakang'ono kamene kamakhala ndi mano a helical komwe mapini a ejector amayenera kuikidwa pankhope ya giya. Tinatha kugwiritsa ntchito chizolowezi chotulutsa masitepe ambiri ndikupukuta zikhomo mpaka pagalasi kuti tipewe kulemba chizindikiro. Mtengo wa chida udakwera, koma mtengo wagawo lililonse ndi magwiridwe ake anali osagonja poyerekeza ndi njira ina iliyonse.
Tsatanetsatane wina wothandiza: ngodya zolembera. Inde, mufunika zolembera zocheperako kuposa momwe mumapangira jakisoni wapulasitiki, koma mumafunikirabe, makamaka pamabowo akuya. Kuyesera kuthawa ndi zero draft kuti musunge makina achiwiri kungapangitse magawo omwe amamatira pachidacho kapena kupeza zigoli panthawi yotulutsa. Ndi chuma chabodza. Cholinga cha zitsulo zosapanga dzimbiri jekeseni jekeseni akamaumba ndi mawonekedwe a ukonde, koma ukonde umatanthauza kuti ikutuluka mu ng'anjo yotenthedwa yokonzeka kugwiritsidwa ntchito. Nthawi zambiri, pamakina ovuta, chowunikira cha CNC kapena kubowola pamafunikabe. Kumeneko sikulephera kwa MIM; ndi njira yosakanizidwa ya pragmatic. Kampani yonga QSY, yokhala ndi luso lophatikizika la CNC, imayendetsa malingaliro awa mosasunthika - amawona ma ops achiwiri osati ngati njira yosiyana koma ngati gawo lomaliza la mayendedwe a MIM.
The Sintering Crucible: Kumene Matsenga (ndi Kusweka Mtima) Amachitika
Chirichonse pamaso sintering ndi kukonzekera basi. Apa ndi pamene gawo lotayirira, la bulauni limakhala chigawo chowundana, chomveka mwazitsulo. Kwa zitsulo zosapanga dzimbiri, kuwongolera mpweya ndikofunikira. Nthawi zambiri mumagwiritsa ntchito hydrogen, argon, kapena vacuum. Hydrogen ndi yabwino kwambiri pochepetsa ma oxide apansi ndikuyeretsa gawolo, koma muyenera kusamalira mame mosamala. Kutayikira komwe kumabweretsa mpweya pang'ono kapena nayitrogeni kumatha kuwononga ng'anjo yonse.
Kutentha mofanana ndi chilombo china. Kusintha kwa +/- 10 ° C kudutsa ng'anjo kungayambitse kusiyana kwa 0.2% pakuchepa. Pa gawo la 50mm, ndiye 0.1mm-yokwanira kuchotsa batch kuti igwiritse ntchito kulolera molimba. Tidagulitsa mbiri ya ng'anjo yokhala ndi ma thermocouple angapo ndikupeza malo athu abwino. Tsopano, timayika magawo ovuta m'chigawo chimenecho chokha. Magawo ocheperako amapita m'mphepete. Ndi za kuyang'anira malo enieni a ng'anjo yanu ngati chessboard.
Mlingo wozizira umakhudza zinthu zomaliza. Pamagiredi owumitsa mvula ngati 17-4PH, mutha kuchitapo kanthu chithandizo ndi kukalamba mogwirizana ndi sintering cycle ngati ng'anjo yanu yakhazikitsidwa. Ndi mwayi waukulu, kuphatikiza masitepe. Koma kupeza nthawi yokhotakhota-kutentha-kusintha koyenera kwa gawo linalake ndikofunikira. Tinapanga laibulale yaying'ono yokhala ndi mbiri yabwino yamabanja osiyanasiyana. Si buku lophunzirira; ndi nkhani zapansi pa sitolo, zolembedwa muzithunzi zotentha ndi malipoti a QC.
Pamene MIM Si Yankho
Momwe ndimakhulupirira munjirayi, ndikofunikira kudziwa malire ake. Metal jakisoni akamaumba imalimbana ndi zigawo zazikulu kwambiri (zambiri pafupifupi 250 magalamu osapanga zosapanga dzimbiri) ndi zoonda kwambiri, zigawo zathyathyathya zomwe zimakhala zosavuta kugwa. Nthawi ina tidatchulapo kanyumba kakang'ono, kokhala ngati mbale pafupifupi 2mm wandiweyani ndi 100mm kudutsa. Ngakhale ndi zida zoziziritsa bwino komanso zoseta zoziziritsa kukhosi, sitinathe kukhazikika. Makasitomala adapita ndi masitampu olondola komanso makina m'malo mwake. Unali kuyitana koyenera.
Magawo owoneka bwino kwambiri anjira zoyambira zakuthambo nthawi zambiri amathandizidwanso bwino popanga kapena kupanga makina a billet. Ma isotropic a MIM ndi abwino, koma pazofunikira kwambiri, mtundu wazinthu zogwiritsidwa ntchito umakondabe. Komabe, pazinthu zosawerengeka pazida zamankhwala, zida zamfuti, zida zamafakitale, ndi zamagetsi ogula, MIM imapereka kuphatikiza kosagonja kwa zovuta, magwiridwe antchito, komanso mtengo wake. Ndi za kusankha nkhondo zanu.
Ichi ndichifukwa chake kudziwa zambiri za ogulitsa ndikofunikira. Mukalowa mu shopu yomwe imangopanga MIM, angayese kukukakamizani kuti mugwirizane ndi gawo lanu. Koma timu yomwe imagwiranso ntchito kuponya ndalama ndi CNC Machining, monga anthu ku QSY, adzakupatsani inu kuwunika moona mtima. Akhoza kunena, Onani, pa geometry ndi voliyumu iyi, kupanga nkhungu ndi CNC kumatha kukhala kotsika mtengo kwa inu. Kukhala ndi cholinga chimenecho kumapangitsa kuti anthu azikhulupirirana. Zaka zawo za 30 akuponya ndi kupanga makina zikutanthauza kuti amawona MIM ngati chida chimodzi mubokosi lalikulu la zida, osati chida chokha.
The Real-World Grind: Ubwino ndi Kusasinthika
Kukhazikitsa gawo la MIM ndi chinthu chimodzi; kupanga 500,000 ya iwo ndi CPK pamwamba pa 1.33 ndi ina. Macheke azinthu zopangira ndi tsiku ndi tsiku: kusasinthika kwamafuta ambiri, kukhuthala kwa batch binder. Imawunika kulemera kwa gawo lobiriwira ndi kukula kwake kumagwira ma drift musanawombe. Koma QC yeniyeni imachitika pambuyo-sinter. Timayang'anira njira zowerengera pamiyeso yovuta kwambiri, kuwunika kachulukidwe (makamaka> 96% ya zongopeka zosapanga dzimbiri), komanso kuyezetsa kwazitsulo nthawi ndi nthawi, kuuma, kuwunika kwa dzimbiri. Ndizosakambirana.
Kusanthula kulephera ndi gawo la ntchito. Ndakhala maola ambiri ndikuyang'ana mbali yosweka. Kodi chinali pore wonyezimira, kuphatikizidwa kuchokera ku kuipitsidwa, kapena kukwera kwa nkhawa kuchokera ku cholakwika chapangidwe? Iliyonse ili ndi zala zosiyana. Chinthu chimodzi chomwe chinabwerezedwa kale chinali kulephera kwapang'onopang'ono pamsonkhano. Zigawozo zidadutsa ma specs onse. Potsirizira pake analondolera ku nkhani yosamalira—ogwira ntchito anali kugwetsa nkhokwe za mbiya za sinter, kuchititsa ming’alu yaing’ono yomwe kenako inkafalikira. Kukonza sikunali mkati; kunali poika thovu m’mbiya. Phunziro: ndondomekoyi sithera pa ng'anjo.
Pamapeto pake, zopambana zitsulo zosapanga dzimbiri jekeseni jekeseni akamaumba ndi za kachitidwe kuganiza. Ndiukwati wa sayansi ya zinthu, kapangidwe ka makina, kupanga zida, uinjiniya wamafuta, ndi kuwongolera bwino kwambiri. Sichipolopolo chamatsenga. Ndi njira yovuta, yosangalatsa, komanso yamphamvu kwambiri mukamvetsetsa chilankhulo chake ndikulemekeza malamulo ake. Makampani omwe akuyenda bwino momwemo, monga omwe ali ndi chidziwitso chozama pazamalonda okhudzana ndi zitsulo, ndi omwe samangogulitsa magawo - amagulitsa mayankho odalirika, opangidwa mwaluso.
