Paunonzwa 'investment casting automotive parts', mufananidzo wepakarepo kazhinji ndeweaya akaoma, anopenya eturbocharger mavhiri kana mabhuraketi einjini akaomarara. Icho ichokwadi, asi ndipo panotangirawo pfungwa isiriyo yeindasitiri: kufunga kuti ndeye chete yepamusoro-yekupedzisira, yakaderera-vhoriyamu exotic zvinhu. Muchokwadi, maitiro acho akanyudzwa chinyararire mukugadzirwa kwakawanda zvakare, asi matambudziko anochinja zvachose. Hazvisi zvekungogadzira chimiro; ndezvekuita kuti irarame 200,000 mamaira ekudziya uye kuzunguzika pasina kukundikana, uye kuzviita nemutengo usingaite kuti maneja wekutenga akunde. Ndakaona mapurojekiti apo dhizaini yanga yakanaka pachiratidziro asi inotyisa mune yekutanga, uye vamwe uko kunyoreswa kweiyo kona yedhizaini kwakachengetedza mari yakawanda mukugadzira. Ngatikurukurei zvazvinoda chaizvo.
Chikumbiro Chakanyanya: Sei Motokari Dzichiramba Dzichidzokera Kumari Yekukanda
Iyo inowira pasi kune geometry uye kuvimbika kwezvinhu. Zvezvikamu zvakaita mari yekukanda zvikamu zvemotokari senge masensor housings ane machanera emukati, kana akareruka zvimiro node dzeEV bhatiri mafuremu, haungokwanise kuforoma kana kuachina kubva kune yakasimba block mune zvehupfumi. Iyo yepedyo-net-chimiro kugona ndiko kuhwina kwekutanga. Iwe uri kuchengetedza pamarara emidziyo, kunyanya nemaaloyi anodhura, uye uri kuderedza maawa ekugadzira echipiri zvakanyanya.
Asi heino nuanced diki iyo specs dzimwe nguva inopotsa: iyo metallurgical consistency. Iyo yakanaka yekudyara inokandwa chikamu, kana iyo nzira yadaidzirwa mukati, ine yunifomu, yakanaka-grained chimiro. Izvi zvakakosha kune zvikamu zviri pasi pe cyclic stress. Ndinoyeuka rimwe purojekiti yeinjini yedhiziri yakawanda—yemhando yepamusoro mari yekukanda zvikamu zvemotokari application. Dambudziko rakanga risiri chimiro; yakanga ichidzivirira misodzi inopisa muzvikamu zvitete pakati pezviteshi. Isu takapfuura nematatu ekudzokororwa kweceramic shell resipi uye tikagadzirisa tembiricha yekudurura nekungori 25 ° C kuti tiwane kusimba pamberi chaipo. Ndiwo mhando yechitoro-pasi tuning iyo maCAD modhi isingakuratidze.
Apa ndipo apo venguva refu foundry vadyidzani vanoratidza kukosha kwavo. Kambani yakadai Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nemakumi matatu emakore emugoko uye kuisa mari mukudyara, vane iyo yakabikwa-muchiitiko. Ivo vaona izvo zvinoshanda kune isimbi isina tsvina EGR valve muviri uchipesana nickel-based alloy turbine dzimba. Irwo ruzivo rwezvinhu-chaiyo-kuziva maitiro, toti, 17-4PH isina tsvina ichaita panguva yekubviswa goko-haigone kutsiva. Iyo inodzivirira inodhura kuedza-uye-kukanganisa pane yako dime.
Iyo Gritty Reality: Kushivirira, Kupfuura, uye Iyo Machining Handshake
Hapana ari mumotokari yekugovera cheni ane humbozha hwekukanda kupedzisa kune zvakakosha zvikamu. Vimbiso ye-as-cast tolerances inowanzova netarisiro yekusangana kwenzvimbo. Chese chikamu chinoda datum, uye ndipo panouya CNC machining. Iyo chaiyo art iri muhurongwa hwekuronga: kusarudza kuti ndezvipi nzvimbo dzekukanda pedyo-neti uye ndeipi yekusiya yakawandisa stock kuti ichene-up kucheka.
Ndakadzidza izvi nenzira yakaoma pakutanga nebhureki rekutapurirana. Isu takaigadzira kuti ive yakakwana net-shape cast, tichivavarira kubvisa machining. Kukanganisa kukuru. Iko kukanganiswa kudiki kubva mukupisa kupisa kwaireva kuti mabhoti egomba mapatani akakukurwa zvakangoringana kuti akonzerese-up nyaya pamutsetse wegungano. Taifanira kurasa batch yese yepilot. Kugadzirisa? Isu takaigadzira patsva kuti ikande mutumbi mukuru kuti uumbe asi takasiya marevisheni emuchina pane ese akakosha anokwira zviso. Mutengo wega wega wakadzikira nekuti goho rakakwira. Iyi nzira yakabatanidzwa ndiyo chikonzero nei mavhisi anosanganisa kukanda uye machining pasi pedenga remba, sezvinoita QSY neyavo Investment casting uye madhipatimendi eCNC, ane mafambiro ari nyore. The machinists kutaura nevakomana foundry daily; ivo vanoziva kuti chikamu chinogona kutenderera sei uye vanogona kuronga kugadzirisa zvinoenderana.
Kupera kwepamusoro ndeimwe nhandare yehondo. Nzvimbo yakakandwa inogona kutaridzika zvakanaka, asi kune chikamu chinoona kudzvanywa kwemafuta kana ine O-ring groove, iyo as-cast porosity inogona kuve nzira inodonha. Isu tinowanzo tsanangura magumo emuchina pakuisa chisimbiso, kunyangwe ikawedzera nhanho. Chinokosha kutaurirana izvi zvakajeka mudhirowa stack-up. Ndiyo iyo Ra 3.2 μm inodiwa yechikamu chose, kana kungoita chiso cheflange? Kusajeka pano kunoda mari nenguva.
Kusarudzwa Kwezvinhu: Haisi Nezve Simba Chete
Famba mumusangano weinjiniya wemotokari, uye nhaurirano yezvinhu inotongwa nesimba rekusimba uye mapoinzi egoho. For mari yekukanda zvikamu zvemotokari,ndiro chete tikiti rekupinda. Iwe unofanirwa kufunga nezve castability, weldability (ye-sub-magungano), uye machinability kuzasi.
Tora mafambiro akananga kune mamwe maepoust emidziyo musimbi isina tsvina yekudzivirira ngura. AISI 316 yakanakira corrosion, asi ine gummy kumashini. Kuchinjira kune rimwe giredhi rinogoneka senge 303, kana kunyangwe yemahara-machining musiyano kubva kune yakawanikwa, inogona kutema CNC chishandiso chekupfeka uye kutenderera nguva. Mumwe mubatsiri akaita seQSY, iyo inonyora hunyanzvi mune isina tsvina uye yakakosha alloys senge cobalt uye nickel-based, anogona kuraira pane izvi kutengeserana-offs. Vanogona kupa zano, semuenzaniso, yakaderera-kabhoni vhezheni yegiredhi resimbi kana chikamu chichizoiswa welded gare gare, kudzivirira kunaya kwecarbide munzvimbo yakakanganiswa nekupisa.
Zvadaro pane thermal yekuwedzera coefficient. Pamusangano unobatanidza imba yealuminium nesimbi inopinza yakakandwa-munzvimbo, unoda ma alloys anotamba zvakanaka thermally. Kuwana izvo zvisiri izvo zvinotungamira kune yakasara kunetseka uye kutadza kuneta nguva isati yakwana. Idzi ndidzo sarudzo dzemhando dzakasiyana-siyana dzinoparadzanisa inoshanda prototype kubva kune yakagadzirira kugadzirwa, yakasimba chikamu.
Kukundikana Modes uye Zvidzidzo Zvavanodzidzisa
Iwe haunyatso nzwisisa nzira yekugadzira kusvika waiona ichitadza. Imwe ndangariro yakajeka iboka realuminium throttle miviri. Vakapasa ese ma dimensional cheki asi vakatadza kuyedza kumanikidza munzvimbo yeinjini. Mupari wemhosva? Micro-shrinkage porosity muzvikamu zvakakora padhuze nemakumbo anokwirisa, asingaonekwe kuX-ray panguva yedu yesampling frequency. Iyo yekutanga yaifanira kugadzirisa gating system kuti idyise zvirinani nzvimbo idzodzo panguva yekusimba. Yaive yemhando yepamusoro yekugadzira basa asi kwete yekugadzira.
Imwe njodzi yakajairika ndeyekurerutsa mutengo wekuoma kunzwisisa. Kuwedzera kuti imwe yekuwedzera yemukati maficha inogona kuita seyakasununguka mudhizaini, asi kana ichida yakaoma ceramic musimboti iyo isina kusimba uye ine yakakwira breakage rate panguva yekubvisa-shelling, yako unit mutengo unogona kupetwa kaviri. Ndakagara nemainjiniya ekugadzira kwatakayera chaizvo mutengo wekuwedzera musimboti uchipesana nekuboora chimiro mune yechipiri CNC mashandiro. Dzimwe nguva, machining akachipa. Chinangwa che Investment casting haisi yekubvisa machining ese; ndeyekukwidziridza mutengo wakazara wechikamu chakapedzwa, chakasimbiswa.
Zviitiko izvi zvinosimbisa kuti sei mupi wemhando yekudzora protocol isingagone kutaurirana. Haisi nyaya yekuongorora kwekupedzisira chete. Zviri pamusoro pekutonga kwemaitiro padanho rega rega: wax jekiseni kuenderana, ceramic slurry viscosity, dewaxing paramita, metal melt chemistry, uye kupisa kupisa macurves. A robust system inobata mitsaukano isati yava marara. Kana ndichiongorora kunobva, ini ndinogara ndichibvunza nezve yavo statistical process control (SPC) pane dzakakomba zviyero uye yavo yekutanga-chinyorwa chekuongorora mushumo wakadzika.
Ramangwana: Lightweighting, Electrification, uye Process Evolution
Kutyaira kwemotokari dzemagetsi kuri kuchinja mari yekukanda zvikamu zvemotokari landscape. Zvikamu zvacho zvakasiyana: mahwendefa ekutonhodza akawanda ebhatiri mapakeji, aruminiyamu asingaremi kana maginesiamu maumbirwo ezvikamu, uye mabhuraketi akasimba emagetsi emagetsi. Iwo mavhoriyamu akakwira, izvo zvinosundidzira maitiro kune mamwe otomatiki mukugadzira wax uye kuvaka shell kuti ichengetedze kuenderana uye mutengo zvinotarisirwa.
Kune zvakare basa rinonakidza mune hybrid maitiro. Semuyenzaniso, kukanda manifold akaoma musimbi isina simbi asi achisiya strategic pads kuitira gare gare machining e sensor ports. Kana kushandisa 3D kudhinda kugadzira yakananga ceramic molds ye Ultra-complex prototype parts, ichinzvenga echinyakare wax pattern tooling zvachose kwenguva pfupi. Apa ndipo pari kunanga indasitiri — kusanganisa matekinoroji ekare uye matsva.
Pakupedzisira, kubudirira mundima iyi hakusi kwekuva nebhurocha rinopenya zvakanyanya. Zviri pamusoro pekuve neruzivo rwakadzama rwekufambisa kukanganiswa pakati pechinangwa chekugadzira, zvinhu fizikisi, uye hupfumi hwekugadzira. Zviri pamusoro pevadyidzani vanogona kutarisa kudhirowa uye nekukasira mureza zvinobvira nzvimbo dzinopisa, vape zano rakawanda recast-friendly fillet radius, kana kukurudzira giredhi rekushandisa rinozoita zvirinani musevhisi. Kubatana ikoko kunoshanda, kugadzirisa matambudziko ndiko kunosandura dhizaini yakanaka kuita yakavimbika, inodhura-inoshanda mota chikamu chinokunguruka kubva pamutsetse, gore negore. Ndiko kukosha chaiko kwemaitiro, kupfuura kugona kwayo kugadzira maumbirwo akanaka.
