Mukamva 'metal jakisoni akuumba chitsulo chosapanga dzimbiri', chithunzi chomwe chilipo nthawi zambiri chimakhala chozizwitsa chofanana ndi ukonde. Ndiwo malo ogulitsa. Zowona, makamaka ndi magiredi ngati 316L kapena 17-4 PH, ndikukambirana kosalekeza pakati pa geometry, katundu, ndi mtengo. Ambiri amaganiza kuti ndi jekeseni wa pulasitiki ndi ufa wachitsulo-ndipamene pali lingaliro lolakwika loyamba. Masitepe otsekereza ndi otsekera ndi pomwe njira yeniyeni imakhala kapena kufa, ndipo pomwe zolephera zambiri, ngati ziti zichitike, zimachitika mwakachetechete.
Chikoka ndi Zowona za MIM za Stainless
Pempholo ndi lodziwikiratu. Mutha kupanga zitsulo zosapanga dzimbiri zovuta, zazing'ono mpaka zapakatikati zokhala ndi tsatanetsatane wabwino komanso zida zamakina zamakina, zomwe nthawi zambiri zimachotsa makina achiwiri. Ganizirani nsagwada za zida zopangira opaleshoni, zida zamfuti, kapena zomangira zovuta. Koma 'wolemekezeka' ndi mawu ogwira ntchito. Sizinthu zopeka kapena zopangidwa. Mipangidwe yaying'ono yochokera ku MIM ndiyosiyana mwachilengedwe-yofanana kwambiri, koma yokhala ndi mawonekedwe otsalira. Pazinthu zambiri, ndizoyenera, koma simungangotchula 'chitsulo chosapanga dzimbiri' pojambula ndikuganiza kuti MIM ndi cholowa m'malo. Kusankhidwa kwa feedstock, kugawa kwa tinthu tating'onoting'ono, ndi mpweya wa sintering (hydrogen, argon, vacuum) kumayang'anira kukana komaliza kwa dzimbiri ndi mphamvu. Ndawonapo mapulojekiti akuyimitsidwa chifukwa zomwe zimafuna kuti ASTM F138 (implant-grade 316L) ichita dzimbiri koma sitoloyo inkayenda mozungulira m'mafakitale, zomwe zidapangitsa kuti kukhale mvula yosavomerezeka ya carbide pamalire a tirigu.
Mutu umodzi wapadera wokhala ndi zosapanga dzimbiri mu MIM ndikuwongolera mpweya. Panthawi yotsekera, ngati kutentha sikuyendetsedwa bwino, mpweya ukhoza kusiyidwa, womwe muzitsulo zosapanga dzimbiri ukhoza kupangitsa kupanga chromium carbide, kuba matrix a chromium ndikupha kukana kwa dzimbiri. Ndikulephera mwakachetechete - gawolo likuwoneka bwino, limadutsa cheke, koma limalephera m'munda. Mufunika wogulitsa yemwe amamvetsetsa zitsulo, osati kungoumba. Apa ndipamene maziko akuponya ndalama, monga zomwe mumawona pakampani monga Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd., zimakhala zofunikira. Iwo akhala akupanga zitsulo zolondola kwazaka zambiri. Pomwe maziko awo ali chipolopolo nkhungu kuponyera ndi kuponya ndalama, kuya kwake muzitsulo zazitsulo-kudziwa momwe kutentha kumakhudzira chitsulo chosapanga dzimbiri ndi ma aloyi apadera-ndi luso loyambira lomwe limamasulira bwino kuyang'anira njira za MIM. Ndizokhudza kuwongolera kusintha kwa magawo.
Kuwona kwina kothandiza: kulosera zam'mbali. Shrinkage imayikidwa mkati, koma sikuti nthawi zonse isotropic. Mbali yayitali, yopyapyala imatha kufota mosiyana ndi kagawo kakang'ono. Nthawi ina tidapanga choyimira cha loko - kachingwe kakang'ono kosapanga dzimbiri kokhala ndi bowo la pini. Kuwumbidwa kunali kopanda chilema, koma pambuyo-sintering, dzenje linali elliptical, osati kuzungulira, chifukwa sanali yunifolomu kachulukidwe mu gawo wobiriwira. Kukonza sikunali mu ng'anjo ya sintering; idabwereranso m'mapangidwe a nkhungu ndi gating, kuonetsetsa kuti ufa wofanana ukuyenda panthawi ya jekeseni. Uwu ndi mtundu wobwerezabwereza, wothana ndi mavuto womwe umalekanitsa wogulitsa magawo ndi mnzake wopanga.
Sintering: Gawo la Make-or-Break
Uwu ndiye mtima wake. Mbali yopangidwa 'yabulauni' ndi yosalimba, yodzaza ndi zomangira za polima. Kutsekereza kumachotsa chomangiracho pang'onopang'ono, mosamala, kuti tipewe kugwa kapena kupanga zolakwika. Ndiye sintering amaphatikiza zitsulo particles. Kwa zosapanga dzimbiri, mlengalenga ndi wofunikira. Mpweya wa haidrojeni wangwiro ukhoza kukhala wabwino kwambiri pochepetsa ma oxide a pamwamba ndikukhala ndi kachulukidwe kwambiri, koma ndizowopsa komanso mtengo wake. Vacuum sintering ndi kuthamanga pang'ono kwa argon ndikofala kwambiri. Mawonekedwe a kutentha-machulukidwe, kutentha kwambiri (nthawi zambiri pansi pa mzere wa solidus), ndi kusunga nthawi-kumayang'anira kachulukidwe komaliza.
Kufuna kuchulukirachulukira (kunena, 96%+) ndikofala, koma ndikugulitsa. Kachulukidwe kachulukidwe kaŵirikaŵiri kumatanthauza kukhazikika kwabwinoko ndi kukana dzimbiri, komanso kucheperachepera kwakukulu ndi chiwopsezo chowonjezereka cha kusokonekera kapena kusokonekera. Nthawi zina, pagawo lokhazikika lopanda mawonekedwe amadzimadzi, kuvomereza 93-94% kachulukidwe ndi lingaliro lovomerezeka la mtengo / kachitidwe. Ndikukumbukira bulaketi yopangidwa kuchokera ku 17-4 PH pomwe kasitomala amaumirira pakuchulukira kwambiri. Tidakwanitsa, koma gawolo linagwedezeka pang'ono, zomwe zimafuna kuti pakhale ntchito yopangira ndalama (kukula) mu kufa pambuyo pa sintering, zomwe zinawonjezera mtengo. Kodi zinali zofunika? Mwina ayi, koma pepala lodziwika lidafuna. Ikuwonetsa kufunikira kwa kukambirana koyambirira pakati pa mapangidwe ndi kupanga.
Pambuyo pa sintering, magawo nthawi zambiri amafunikira kumaliza. Kugubuduka pakubweza, kuwomberedwa kuti muchepetse kupsinjika, kapena makina opepuka a CNC pazinthu zovuta. Apa ndipamene wogulitsa ndi Integrated CNC makina kuthekera, monga QSY, kuli ndi mwayi. Amatha kugwira ntchito yonse yamtengo wapatali—MIM, sintering, ndiyeno kukonza mwatsatanetsatane datum pamwamba kapena ulusi—pansi pa denga limodzi. Imawongolera mayendedwe ndipo, koposa zonse, imatsimikizira kuyankha. Ngati chinthu chopangidwa ndi makina chazimitsidwa, simukhala ndi mkangano pakati pa nyumba ya MIM ndi malo ogulitsa makina akudzudzulana.
Zinthu Zakuthupi Kupitilira 316L
Ngakhale 316L ndiyomwe imagwira ntchito, magiredi ena osapanga dzimbiri ndi ma aloyi akugwiritsidwa ntchito mochulukira. 17-4 PH ndiyotchuka chifukwa imatha kukhala mvula yolimba ikatha. Koma apa pali lingaliro: kuzungulira kwa sintering kwa 17-4 PH kuyenera kukonzedwa kuti zisapange delta ferrite, yomwe imatha kusokoneza kuyankha kokalamba komanso kuuma komaliza. Simungagwiritse ntchito mbiri ya ng'anjo yofanana ndi 316L.
Ndiye pali zambiri zachilendo zipangizo. Ndakhala ndikuchita nawo ntchito zogwiritsa ntchito MIM ma aloyi opangidwa ndi cobalt (monga CoCrMo ya implants za mano) ndi zitsulo zopangidwa ndi nickel. Izi ndi zilombo zosiyana kwathunthu. Ufawu ndi wokwera mtengo, kutentha kwa sintering ndikwambiri, ndipo mazenera opangirapo amakhala ocheperako. Kuwonongeka ndi vuto lalikulu. Simungathe kuyendetsa nickel alloy pambuyo pa mtanda wosapanga dzimbiri popanda kuyeretsa bwino ng'anjo ndi kuyeretsa. Iyi si njira yopangira ntchito wamba; imafunika mizere yodzipereka komanso ndondomeko zoyendetsera ndondomeko. Kampani yomwe ili ndi mbiri mu ma aloyi apadera, monganso momwe ziwonetsedwera mu kukula kwa QSY, ndizotheka kukhala ndi maziko a ntchito yotere, ngakhale akugwiritsa ntchito njira ina yopangira monga MIM.
Kusankha kwazinthu kumalumikizananso ndi feedstock. The binder / ufa osakaniza ayenera kukhala homogeneous. Kuperewera kwa zakudya m'thupi kumatha kubweretsa 'kuphatikizana kophatikizana' panthawi yobaya jekeseni, zomwe zimapangitsa kuti madera omwe ali ndi kachulukidwe kosiyanasiyana, komwe kenaka kuthirira mosiyanasiyana. Ndi vuto lomwe silingathe kukonza pambuyo pake. Kupeza chakudya chokhazikika, chapamwamba kwambiri ndi theka lankhondo.
Pamene MIM Si Yankho
Ndikofunikira kudziwa malire. MIM si yabwino kwa zigawo zazikulu kwambiri (nthawi zambiri, ganizirani pansi pa 250 magalamu osapanga zosapanga dzimbiri). Ndizosauka kwa magawo omwe ali ndi magawo okhuthala kwambiri, chifukwa amatha kugwira zomangira ndi sinter bwino pachimake. Sizoyeneranso ngati mukufuna makina apamwamba kwambiri - pa bolt yofunikira kwambiri yazamlengalenga yomwe ili ndi kukameta ubweya wambiri, mutha kuyang'anabe kukonza kuchokera ku bar stock.
Ndatsogolera makasitomala kunjira zina. Nthawi zina, kwa gawo losapanga dzimbiri lovuta kwambiri, kuponya ndalama imakhala yotsika mtengo, makamaka yotsika kwambiri kapena ngati makulidwe a khoma amasiyana mosiyanasiyana. Zida (zoumba phula) ndizotsika mtengo kuposa zitsulo zolimba za MIM. Nthawi zina, ngati gawolo ndi losavuta koma laling'ono, kupondaponda molondola ndiyeno kuwotcherera kapena kuwotcherera kungapambane. Chisankhochi chimaphatikizapo voliyumu, geometry, zolemba zakuthupi, ndi bajeti. Wopanga bwenzi wabwino ayenera kukhala ndi zokambiranazo moyenera, osati kungokankhira ntchito yawo yoyamba. Mfundo yakuti kampani ngati QSY imapereka njira zingapo-kuponyera, makina, ndipo, kuwonjezera, kumvetsetsa kwa njira ngati MIM - kukusonyeza kuti angapereke njira yolankhulirana yoteroyo m'malo mongolankhula molingana.
Kuyesa kumodzi komwe kudalephera komwe kumabwera m'maganizo kunali kasitomala yemwe akufuna chubu chosapanga dzimbiri chokhala ndi mipanda yolimba yamkati - woyimira bwino wa MIM pamapepala. Tidazifanizira, koma mamembala a lattice anali abwino kwambiri kotero kuti pakumangirira, amatha kugwa. Tidapanga zida zothandizira mu nkhungu, tidasintha mitengo yolumikizira, koma zokolola zake zinali zodetsa nkhawa. Ntchitoyi idayimitsidwa. Inali geometry yomwe inakankhira kupyola malire amakono a teknoloji yazinthu zenizenizo. Muyenera kudziwa nthawi yoti muchokepo.
Kuyang'ana pa Supply Chain
Pomaliza, talingalirani gwero lake. Makampani a MIM ali ndi osewera kuyambira pazimphona zophatikizika kwambiri, zophatikizika kwambiri mpaka mashopu ang'onoang'ono apadera. Pakupanga ma prototyping komanso kupanga ma voliyumu otsika, sitolo yaying'ono, yodziwa bwino zaukadaulo imatha kulabadira. Nthawi zambiri ndipamene mumapeza akatswiri enieni omwe angasinthe mbiri ya ng'anjo ndi dzanja pa ntchito yanu.
Mukamayesa mnzanu, musamangopempha kabuku kameneka. Funsani njira zawo zogwirira ntchito za sintering 316L. Funsani kuti muwone malipoti awo a kachulukidwe ndi ma micrograph pa gawo lofanana. Funsani momwe angayenerere malo atsopano a feedstock. Mayankho awo adzakuuzani zambiri kuposa tsamba lililonse. Kampani yomwe idakhalapo kwanthawi yayitali mubizinesi yazitsulo, monga yomwe tanena kale ndi yake zaka zoposa 30 popanga ndi kupanga, zimabweretsa chikhalidwe cha kukhazikika kwa ndondomeko ndi machitidwe abwino omwe ndi ofunika kwambiri, monga momwe angagwiritsire ntchito matekinoloje atsopano monga MIM. Mutha kupeza zambiri za kuthekera kwawo koyambira patsamba lawo, https://www.tsingtaocnc.com.
Pomaliza, zitsulo jakisoni akamaumba zitsulo zosapanga dzimbiri ndi chida champhamvu, koma ndi chida chimodzi chokha. Kupambana kwake kumadalira kumvetsetsa kwakuya, kothandiza kwa unyolo wonse - kuchokera ku ufa kupita ku sintered gawo - ndikuwunika moona mtima ngati gawo lomwe likujambulidwa likugwirizanadi ndi ndondomekoyi. Palibe zamatsenga, sayansi yambiri yolamulidwa ndi kuchuluka kwanzeru, nthawi zina zopambana movutikira, nzeru zapansi pa sitolo.
