Paunonzwa 'metal jekiseni molding kugadzira', pfungwa zhinji dzinosvetuka dzakananga kune yakakwirira-vhoriyamu, diki, yakaoma zvikamu. Icho ichokwadi, asi zvakare ndipo panogara pfungwa huru yekutanga. Vanhu vanofunga kuti ingori imwe nzira yakachipa yekugadzira zviuru zvezvidimbu. Muchokwadi, kukosha hakusi muhuwandu chete; zviri mumajiometri izvo zvisingagoneke zvachose kana kudhura zvakanyanya kumashini kana kukanda zvakajairwa. Murindi wepagedhi haasi wekudhinda, ndeye feedstock, debinding denderedzwa, uye sintering ruzivo. Ndakaona mapurojekiti akawandisa achikundikana nekuti mumwe munhu akawana a simbi jekiseni kuumba mugadziri zvichibva pashoko rebhurocha usinganzwisise maitiro ekuderera kana maturusi nuances kune undercuts.
Iyo Core Dance: Haisi Kungoumba
Iyo MIM maitiro ndeye marathon, kwete sprint. Iwe unotanga neiyo granular feedstock - simbi poda yakamiswa mupolymer binder. Iko kuumba pachayo kunonzwa kujaira kana iwe uchiziva mapurasitiki jekiseni kuumba. Asi ndicho chikamu chiri nyore. Iwe uchangobva kugadzira 'chikamu chegirini' chinonyanya kusunga. Zvino kunouya debinding, inononoka, nhanho yakakosha yekubvisa iyo binder pasina kukonzera kukanganisa. Kukurumidza, uye chikamu chinoputika kana kuputika. Apa ndipo panodaidzira ruzivo rwemugadziri. Chitoro chakaita seQingdao Qiangsenyuan Technology Co., Ltd. (QSY), ine hudzamu hwayo mukukanda mari, ine gumbo kumusoro uku. Mafungiro ekugadzirisa kupisa kwemaitiro uye shanduko yezvinhu mu sintering iri padyo. Nhoroondo yavo refu mu shell mold casting uye Investment casting zvinoreva kuti havasi vatorwa kune yakaoma, padyo-neti-chimiro maitiro ane stringent dimensional control post-sintering.
Sintering ndiyo nhanho yemashiripiti. Chikamu chinopinda muchoto, uye simbi yakasara inosanganiswa, ichiwedzera. Chikamu chinodzikira-sezvinofanotaurwa, unovimba. Izvi zvinofanotaurwa shrinkage ndiyo inoyera grail. Mugadziri ane ruzivo akavaka sintering profiles emhando dzakasiyana-siyana simbi, special alloys-kuburikidza nekuedza, kukanganisa, uye yakawanda metrology. Harisi resipi rakajairwa raunodhonza kubva mubhuku. Semuyenzaniso, chikamu chine madziro akasiyana-siyana ukobvu chinopisa zvisina kuenzana kana mbiri yechoto isina kugadzirirwa iyo. Iwe unodzidza izvozvo nekuparadza mabheti, kwete nekuverenga ma spec sheet.
Ndosaka iyo post-sintering CNC machining yavanopa haisi yekutevera; kazhinji chinhu chinodiwa. Kunyangwe iine yakanakisa maitiro ekutonga, mamwe maficha-senge shinda ane ultra-tight tolerances kana mating nzvimbo-angangoda kucheneswa kwekupedzisira. Kuva CNC machining mumba, sezvinoita QSY, mukana mukuru. Inobvumira kubatanidzwa kwemaitiro ekugadzirisa. Iwe hausi kutumira sintered chikamu kune mumwe mutengesi, nengozi yekumisikidza nyaya. Iwe unogona kugadzira chikamu cheMIM, uchiziva kuti yakakosha datum maficha anogona kugadzirwa post-sintering kurova iyo +/- 0.05mm callout. Inoshandura muganhu kuita hybrid yekugadzira simba.
Sarudzo dzeZvinhu: Kupi maAlloys Anowana Chaiyo
Hurukuro yezvigadzirwa muMIM kazhinji inotanga ne17-4PH isina tsvina. Ndiro bhiza rebasa. Asi basa rechokwadi rinonakidza rinoitika nema alloys akaoma. Apa ndipo panoedzwa simbi dzemugadziri. Nickel-based kana cobalt-based superalloys yeaerospace kana mishonga yekurapa inoita zvakasiyana zvakanyanya panguva yekupisa. Mamiriro avo ekudonha akasiyana, kunzwa kwavo kumhepo yevira (hydrogen, argon, vacuum) yakakosha.
Kambani inonyora ruzivo ne cobalt-based alloys uye nickel-based alloys mubasa ravo rekukanda, sezvaunoona pane yavo saiti pa https://www.tsingtaocnc.com, iri kusaina kugona kupfuura simbi dziri nyore. Kubata zvinhu izvi kunoda kwakasimba kubata hupfu (oxygen control), sophisticated virace setups, uye kunzwisisa kwakadzama kwemaitiro ekupedzisira emuchina anowanikwa kuburikidza nekutenderera sinter. Harisi bhizinesi reparutivi; inyanzvi. Ndinoyeuka chirongwa chechikamu chegwaro rekuvhiya chaida nickel-chromium alloy. Iwo mashoma ekutanga sintering akaburitsa zvikamu zvaisangana spec asi zvine marginal ductility. Kugadzirisa kwanga kusiri pachena - kwaive kugadziridzwa kushoma kune tembiricha yekubata nguva uye mwero wekutonhora, chimwe chinhu chakadzidzwa kubva kune yavo yekudyara yekukanda kumashure ine alloys akafanana.
Iyo gomba iri pano iri kufunga kuti vese vagadziri vanogona kubata zvese zvakanyorwa. Mubvunzo hausi Unogona kuzviita here? asi Ndiratidze chikamu chekugadzira chawakaita mune ino chaiyo alloy, uye ngationei zvinhu certs uye mechanical test data. Izvo zvinhu zviri pachitupa chekuenderana zvinoda kuteedzera kumashure kune inodzorwa, inodzokororwa maitiro, kwete rombo batch.
Kushandisa: The Silent Cost Driver
Tooling yeMIM chimwe chikara. Nekuda kweiyo abrasive hunhu hweiyo feedstock, molds anowanzo gadzirwa kubva kune akaomeswa simbi simbi. Iyo dhizaini uzivi hwakasiyana kubva epurasitiki jekiseni molds. Uri kugadzirira chikamu chinodzikira zvakafanana (zvakakodzera) ne15-20%. Saka, iyo mold cavity yakawandisa maererano. Makona ekudhirowa akakosha pakuburitsa chikamu chegirinhi, icho chine hutete.
Iyo yakaoma inouya nemukati maficha uye undercuts. Mukuumba epurasitiki, iwe waizoshandisa mativi-zviito kana zvekusimudza. MuMIM, unoedza kuvanzvenga sedenda mukushandisa nekuti vanowedzera mutengo uye vanogona kuomesa ejection yechikamu chakapfava chegirini. Kazhinji, sarudzo yekugadzira ndeyekuumba buri-gomba uye wozoshandisa yechipiri oparesheni kugadzira iyo undercut, kana kugamuchira iri nyore dhizaini. Ndanga ndiri mumisangano yekuongorora dhizaini kwatakapedza awa tichikakavadzana 0.5mm undercut-kuti tingaishandise, kuigadzira gare gare, kana kuibvisa zvachose. Kodzero simbi jekiseni kuumba mugadziri vachaita nhaurirano idzi nekukasika, vachisundidzira kumashure magadzirirwo asiri echokwadi kwete nekuti havagone kuyedza, asi nekuti vanoziva goho uye mutengo wezvinoreva kubva mukukundikana kwekare.
Apa ndipo panobatanidzwa tsigiro yeinjiniya. Mugadziri anongotora faira reCAD uye makotesheni ane njodzi. Imwe inokumbira kufona kuti ikurukure shanduko yemadziro ukobvu, nzvimbo dzemasuwo, uye angangove madhiza mamaki ari kuunza yavo shop-floor ruzivo kune yako dhizaini maitiro. Inoponesa mwedzi yekushungurudzika.
Iyo Yekubatanidza Mupendero: Kubva Mold kusvika Yakapedzwa Chikamu
Izvi zvichida ndiyo inonyanya kukurukurwa mukana. MIM haiwanzo danho rekupedzisira. Iko kunowanzo bvisa, kudonha, kupisa kupisa, plating, kana iyo yekupedzisira chaiyo machining. Kana aya matanho akakamurwa kune vakasiyana vatengesi, unorasikirwa nekutonga. Dimensional tolerances inoungana. Kutungamira nguva bharumu. Kukakavadzana kwehunhu kunova dambudziko rekunongedza zvigunwe.
Oparesheni inosanganisa MIM neyechipiri maitirwo pasi pedenga remba inogadzira inopindirana mafambiro ebasa. Tora muenzaniso kubva kuQSY's modhi: ivo vanobata kukanda (MIM ihama yekuisa mari mukukanda muhuzivi), iyo sintering, uye vozoita CNC machining kugona pa-saiti. Kune yakakwira-chaiyo chikamu, izvi zvinoreva kuti iyo sintered chikamu chinogona kutamiswa chakananga kumuchina weCNC, wakagadziriswa uchishandisa sintered datum maficha, uye apera. Iyo yemhinduro loop yakasimba. Kana sintering batch ikakura zvishoma, chirongwa chekugadzira chinogona kugadziridzwa zvishoma kuti chipe. Iyi nhanho yekutonga haionekwe kune mutengi asi inoratidzwa muzvikamu zvinogara zvakanaka uye mijenya mishoma yakarambwa.
Ini ndakabata cheni dzekugovera uko chikamu cheMIM chakagadzirwa mune rimwe guta, chakatumirwa kunogadzirwa mune rimwe, ndokuzotumirwa zvakare kuti plating. Mutengo wezvekuita uye njodzi yemhando yaiwanzo dzima iyo yega-chikamu yakachengetwa yeMIM. Iyo yakabatanidzwa modhi inoderedza izvo. Iyo inoshandura mugadziri kubva kune commodity processor kuita mubatsiri wemhinduro kune dzakaomarara mejini zvikamu.
Saka, Chii Chauri Kunyatsotsvaga?
Kusarudza a simbi jekiseni kuumba mugadziri hazvisi zvekuwana mutengo wakachipa pachuru chezvidimbu. Ndezvekutsvaga kudzika kwehunyanzvi. Iwe unofanirwa kuongorora kugona kwavo kwezvinhu, kunyanya kana uri kufamba kupfuura 316L isina tsvina. Iwe unofanirwa kunzwisisa maitiro avo ekugadzira maturusi uye kuda kwavo kubatana paDFM (Design for Manufacturability). Kunyanya kutsoropodza, iwe unofanirwa kuongorora kutonga kwavo pamusoro peiyo kukosha kweketani-kubva pa feedstock kusvika pakupera, yakaongororwa chikamu.
Kumashure kwekambani, senge QSY yemakore makumi matatu mukukandira chaiko uye kugadzira, haingori mutsara wekushambadzira. Iyo proxy yekuunganidzirwa, tacit ruzivo mukugadzirisa simbi mupedyo-net-shape maitiro. Nhoroondo iyoyo inoratidza kuti vanonzwisisa kutenderera kwekupisa, chimiro chezviyo, uye kugadzikana kwedimensional nenzira itsva, yakatsaurirwa-chete-ku-MIM shopu inogona kunge ichiri kudzidza kuburikidza nekuedza kunorwadza uye kukanganisa.
Muedzo wekupedzisira unogara uri muzvikamu. Bvunza masampuli kubva mukumhanya kwekugadzira, kwete prototypes akakwana. Zviise pasi pemaikorosikopu, zviyere, zviedze. Iyo nyaya yemugadziri yakanyorwa mukuenderana kwavo sintered density uye kupinza kwemacheto avo ekupedzisira akagadzirwa. Ndiyo mhinduro chaiyo yekutsvaga yakakosha.
