Mukamva 'ntchito zopangira jakisoni wazitsulo', anthu ambiri amangoganiza kuti ndikuwumba kwa pulasitiki ndi ufa wachitsulo. Ndiko komwe anthu amapunthwa. Si kukweza kuchokera ku pulasitiki jekeseni akamaumba; ndi chilombo chosiyana kwambiri ndi malamulo ake, mutu, ndi mawanga okoma. Lonjezoli ndi lodabwitsa: zitsulo zovuta, zozungulira pafupi ndi ukonde m'magulu apamwamba. Chowonadi ndi njira yodzaza ndi tinthu tating'onoting'ono tomwe timatha kuchotsa gulu lonse ngati simukuwona ngati khwawa. Ndawonapo ma projekiti ambiri akubwera ndi ziyembekezo zosayembekezereka za kulolerana kapena kutsirizika pamwamba pa nkhungu, kuyiwala udindo wovuta wa sintering. Ndiko kumene matsenga enieni, ndi nkhondo yeniyeni, zimachitika.
Njira ya Core MIM Si Bokosi Lakuda
Tiyeni tiwolokere popanda buku losavuta. Mumayamba ndi feedstock, yomwe ili pafupifupi 60% ufa wachitsulo ndi 40% binder ndi voliyumu. Uku sikungosakaniza kulikonse; ndi homogenization ndondomeko ayenera kukhala wangwiro. Kusagwirizana kulikonse kuno kudzawonekera pambuyo pake ngati zopanda pake kapena kusokoneza. Timagwira ntchito ndi chilichonse kuyambira 17-4 PH zosapanga dzimbiri mpaka ma aloyi anyezi a nickel. Gawo lopangira jakisoni limamveka bwino kwa anyamata apulasitiki, koma magawo ake ndi olimba. Mukuchita ndi zinthu zowoneka bwino kwambiri, ndipo kapangidwe ka nkhungu kamayenera kupangika chifukwa cha kuchepa kwamphamvu kwambiri panthawi yotsatizana ndi kufota - nthawi zambiri 15-20% yocheperako. Simungangogwiritsa ntchito kapangidwe ka nkhungu ya pulasitiki ndikuyembekeza kuti ikugwira ntchito.
Kenako akubwera debinding. Ichi ndi sitepe yapang'onopang'ono, yovuta pomwe mumachotsa makina omangira. Mofulumira kwambiri, ndipo mumapeza ming'alu kapena matuza. Timagwiritsa ntchito kuphatikiza kwa zosungunulira ndi matenthedwe debinding mbali zambiri. Ndi masewera odekha. Mbali yobiriwira ndi yosalimba kwambiri panthawiyi. Ndikukumbukira ntchito ina yopanga zida zopangira opaleshoni komwe tidathamangira kutentha. Ziwalozo zinkawoneka bwino potuluka m’ng’anjoyo, koma m’kati mwa ng’anjoyo, zinkagwera pansi ngati asilikali otopa. Choyambitsa chinali kupsinjika kotsalira kuchokera ku kuchotsedwa kosakwanira komangiriza. Mfundo yokwera mtengo yophunziridwa mu gulu limodzi.
Sintering ndiye metamorphosis yomaliza. Ziwalozo zimatenthedwa mu ng'anjo ya hydrogen, argon, kapena vacuum, yomwe imatenthedwa pafupi ndi malo osungunuka achitsulo. Apa ndi pamene tinthu tating'onoting'ono timalumikizana ndipo gawolo limachulukana. Ma trays, kapena sintering trays, ndi luso lokha. Ayenera kuthandizira gawolo popanda kumamatira kapena kuyambitsa kutentha kosiyana. Kwa gawo la zida zamphamvu kwambiri zomwe tidathamanga, tidakhala milungu iwiri ndikungopanga ndikuyesa ma seti osiyanasiyana kuti tipewe kupotoza pansi pa kulemera kwake kutentha. Ndizinthu zosasangalatsa izi zomwe zimapangitsa kapena kuswa a ntchito zoumba jekeseni wazitsulo polojekiti.
Kumene MIM Imamveka (ndipo Pomwe Siyichita)
MIM si mankhwala-zonse. Malo ake okoma ndi ovuta, ang'onoang'ono mpaka apakatikati azitsulo azitsulo omwe amafunikira kuchokera ku 10,000 mpaka mamiliyoni pachaka. Ganizirani zida zamfuti, mabulaketi a mano, nsagwada za zida zopangira maopaleshoni, kapena zowunikira zamagalimoto. Ngati mukufuna zidutswa zisanu, pitani ndi CNC Machining. Ngati mukufuna chochapira chosavuta, pitani ndi sitampu. Mtengo wa MIM ndikuphatikiza magawo angapo ophatikizidwa kukhala gawo limodzi lolimba. Tinali ndi kasitomala yemwe amasonkhanitsa makina otsekera ang'onoang'ono kuchokera ku zidutswa zisanu zomangika. Tidazipangiranso za MIM, kuzifikitsa ku gawo limodzi, ndikudula mtengo wawo wa msonkhano ndi 70%. Ndiko kupambana.
Koma kupereŵera kwa zinthu zakuthupi kuli kwenikweni. Ngakhale zotayira ngati 316L zosapanga dzimbiri kapena Fe-2Ni ndizokhazikika za MIM, zitsulo zokhala ndi kaboni wapamwamba kwambiri kapena ma aluminiyamu ndizovuta kwambiri. Zenera la sintering ndi lopapatiza kwambiri. Komanso, kukula kwa gawo ndi chopinga. Ngakhale ukadaulo umakankhira malire, lamulo lalikulu ndi magawo ochepera 250 magalamu ndipo amalowa m'manja. Kufanana kwa khoma ndi chimodzi chachikulu. Mwadzidzidzi, kusintha kwakukulu pamagawo ophatikizika ndi njira yopangira ma sink marks pakumawumba ndi kupotoza mu sintering. Design for MIM (DFM) ndi zokambirana zosakambitsirana zomwe ziyenera kuchitika zida zilizonse zisanadulidwe.
Apa ndipamene kukhala ndi maziko pakupanga ndi kupanga ndi kofunika kwambiri, monga momwe zimakhalira Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd.. Pazaka zopitilira 30 mu nkhungu za zipolopolo ndikuponya ndalama, amamvetsetsa kuyenda kwachitsulo, kulimba, ndi njira zamatenthedwe pamlingo wofunikira. Kudziwa kumeneku kumamasulira mwachindunji kuthetsa mavuto a MIM sintering. Kuwawona akugwira ntchito zoumba jekeseni wazitsulo pamodzi ndi maziko awo kuponya ndalama ndi CNC makina ntchito ikuwonetsa kumvetsetsa kothandiza kwa chilengedwe chonse chopanga. Inu simungakhoze kungokhala MIM shopu paokha; muyenera kudziwa nthawi yopangira njira ina kapena momwe mungamalizire gawo la MIM ndi makina olondola.
Zowona Zam'mbuyo: Sizichitika Kawirikawiri Pambuyo Pochita Sintering
Aliyense amene angakuuzeni gawo la MIM likutuluka mu ng'anjo ya sintering yokonzeka kutumiza ndikosavuta. Kulolerana kwapang'onopang'ono kumakhala ± 0.3% mpaka ± 0.5%, zomwe ndi zabwino, koma pazinthu zovuta monga mabowo kapena malo okwerera, nthawi zambiri mumafunika ma opareshoni achiwiri. Ichi ndichifukwa chake opereka ambiri, kuphatikiza QSY, amaphatikiza makina a CNC. Mbali yopindika ingafunike chobowoleredwa kuti chifike m'mimba mwake kapena ulusi wodulidwa. Vuto ndikukonza magawo osalimba awa, osawaphwanya.
Kuchiza kutentha, kutsirizitsa pamwamba monga plating kapena passivation, ndi kuyang'anitsitsa khalidwe zonse ndi gawo la phukusi. Pa gawo la aloyi ya cobalt-chromium yamakampani azachipatala, tidayenera kupanga masinthidwe apadera kuti tikwaniritse miyezo ya ASTM F75, kenako ndikuchita chithandizo chotentha cha isostatic pressing (HIP) kuti tichotse porosity iliyonse yotsalira, ndikutsatiridwa ndi kugaya mwatsatanetsatane pamalo ofunikira. The ntchito zoumba jekeseni wazitsulo linali gawo loyamba lachitatu la ulendowu. Kutha kuyendetsa tcheni chonsechi pansi pa denga limodzi kumalepheretsa kuloza zala zambiri zikabuka.
Kulamulira khalidwe ndi chilombo china. Timagwiritsa ntchito kusakaniza kwa statistical process control (SPC) poumba, kukonza makina oyezera (CMM) pazolemba zoyamba, ndi zitsanzo zambiri poyesa kachulukidwe (nthawi zambiri kudzera mu njira ya Archimedes). Metallographic cross-sections ndizofunikira kuti zitsimikizire microstructure. Ndiwogwiritsa ntchito kwambiri, koma ndi njira yokhayo yopezera zolakwika zomwe zingayambitse kulephera kwamunda.
Kuyenda pa Supplier Landscape
Kusankha a ntchito zoumba jekeseni wazitsulo mnzako safuna kupeza mawu otsika mtengo kwambiri. Ndi za kupeza luso. Muyenera kufunsa za zomwe akumana nazo ndi nkhani yanu yeniyeni. Kodi angakuwonetseni ma micrographs a ntchito yam'mbuyomu ndi 17-4 PH mu chikhalidwe cha H900? Kodi mphamvu yawo yowongolera ng'anjo ya sintering ndi yotani? Kodi amachitira bwanji kuyendera ndi kupereka malipoti kwa nkhani yoyamba?
Yang'anani wothandizira yemwe akufunsa mafunso ambiri momwe akuyankhira. Ayenera kukuwotchani pa ntchito ya gawolo, zolemetsa, ndi zofunikira zodzikongoletsera. Wothandizana naye wabwino amakankhira m'mbuyo pazinthu zamapangidwe zomwe zimakhala zovuta kwa MIM ndikupereka njira zina. Ndapeza kuti masitolo omwe ali ndi maziko olimba muukadaulo wina wopangira zitsulo, monga ukatswiri wanthawi yayitali pakupanga zitsulo. Mtengo wa QSY, amakonda kukhala ndi kawonedwe kokwanira komanso kachitidwe ka zinthu. Sakuyesera kukakamiza msomali uliwonse mu dzenje lozungulira la MIM chifukwa ndi chida chokha chomwe ali nacho.
Pomaliza, pitaniko ngati mungathe. Onani makina osindikizira, mizere yotsekera, ng'anjo zamoto, ndi ma CMM. Yang'anani bungwe ndi ukhondo. MIM ndi njira yomwe imakhudzidwa ndi kuipitsidwa. Kuphulika kwa ufa wosiyana kungathe kuwononga mtanda. Malo ogulitsira amakuuzani zambiri kuposa kabuku kalikonse kogulitsa.
Kuchimanga: Ndi Chida, Osati Chozizwitsa
Choncho, ntchito zoumba jekeseni wazitsulo ndi amphamvu, koma amafuna kulemekeza ndondomeko intricacies. Sichidule. Kupambana kumadalira mgwirizano wolimba pakati pa wopanga ndi wopanga kuyambira tsiku loyamba, kumvetsetsa mozama za sayansi ya zinthu zomwe zikuseweredwa, komanso kuyang'ana kosalekeza pakuwongolera njira. Cholinga chake ndikukulitsa luso lake lopanga zida zachitsulo zolimba, zolimba, podziwa malire ake.
Ndizosangalatsa kuwona momwe makampaniwa amasinthira, ndi makina atsopano omangira komanso njira zothamangitsira mwachangu zikubwera. Koma mfundo zazikuluzikulu zimakhalabe. Ndi za kuyang'anira ulendo wa ufa wachitsulo kupyolera mu kuumba, kuchotsa zomangira, ndi kusuntha kolimba mu gawo lodalirika. Ikadina, ndiukadaulo waluso. Ikalephera, ndi mulu wodula kwambiri wa ufa wa sintered. Kusiyanitsa pafupifupi nthawi zonse kumakhala mukuzama kwa chidziwitso komanso kufunitsitsa kuchitapo kanthu ndi tsatanetsatane wa ndondomekoyi, osati kungogulitsa konyezimira.
