Kana vanhu vazhinji vakanzwa 'metal investment casting', vanofananidzira nzira yakatwasuka, inenge yechinyakare: gadzira wakisi pateni, inyika muceramic, nyungudutsa wakisi, dururira musimbi. Ndapedza. Asi ndipo panowanikwa fungidziro huru yekutanga. Dambudziko chairo harisi mukunzwisisa nhanho dzekutanga-zviri mukudzora zviuru zvakasiyana mukati mechimwe nechimwe kuti uwane chikamu chisiri chimiro chete, asi chinoshanda, chinovimbika chikamu. Ndakaona mapurojekiti akawanda achigumburwa nekuti mumwe munhu aifunga kuti kungoita 'durura uende'. Chokwadi ndechekuti, mukaha uripo pakati pekukandira unokwanisa uye wepamusoro-kutendeseka wakakura, uye wakazadzwa neruzivo rwemapepa asina kumbotaura.
Iyo Shell Game: Haina Kungove Mold
Ngatitange negoko, hwaro chaihwo. Iro indasitiri izwi rekuti 'shell mold casting' rinowanzo shandiswa zvakasiyana, asi mukuita kwekudyara kwekudyara, goko racho chigadzirwa cheinjiniya chakawanda pachacho. Haisi imwe dip. Iyo yakajairwa goko reyakakwira-alloy simbi chikamu chinogona kusanganisira 7 kusvika 9 majasi: yepakutanga jasi rechiso rine Ultra-yakatsetseka zircon hupfu kutora zvakadzama, inoteverwa nepakati mabhachi ekuchengetedza ane coarser silica jecha resimba, uye kazhinji chisimbiso chekupedzisira. Nzvimbo yekuomesa pakati pedhivha yega yega - mwando, tembiricha, kuyerera kwemhepo - yakakosha. Ndinoyeuka bhechi remitumbi yesimbi isina tsvina yataimhanyira uko goko rairatidzika kunge rakakwana, asi takanga tine kuputika kwegomba repamusoro. Mushure memazuva ekukwenya-kwenya musoro, takaitsvaga tichidzokera kune imwe nguva spike muhunyoro hwepakati panguva yekuomeswa kwejasi rechitatu nerechina. Goko rakanga risati rapora nemazvo, zvichikonzera kutsemuka uye gasi shanduko panguva yekudira. Kugadzirisa kwanga kusiri muchoto; yakanga iri mukubvisa humidifying room yekuomesera.
Apa ndipo panoratidza chiitiko chemuvambi. Kambani yakaita seQingdao Qiangsenyuan Technology (QSY), ine makore makumi matatu erekodhi rekodhi, yaizove nekurangarira kwemasangano kweaya marudzi ezvakatipoteredza nuances. Webhusaiti yavo, tsngtaocnc.com, inonyora basa ravo neshell mold uye Investment casting, uye musanganiswa uyu ndiwo wakakosha. Zvinoreva kuti ivo vanonzwisisa spectrum kubva akareruka magomba maitiro kune yakazara chaiyo ceramic shell nzira. Kune mutengi, kudzika uku kunoreva kuti havanyanyi kupofumadzwa neizvi maitiro-sensitive kukundikana.
Kusarudzwa kwezvinhu zvegoko kunopindirana zvakananga nesimbi inodururwa. Kudira superalloy senge nickel-based alloy inopfuura 1500 ° C kunoda goko rine refractoriness yakakwirira uye kupisa kwekuvhunduka. Kushandisa yakajairwa slurry kuumbwa kwakagadzirirwa kabhoni simbi kungave njodzi - goko rinogona kudonha kana kutsemuka. Kusarudzwa kwezvisungo (colloidal silica vs. ethyl silicate) uye stucco zvinhu ipurojekiti yemakemikari pachayo.
Alloys: Iko Iyo Spec Inosangana Nechokwadi
Kutaura nezvezvinhu, iyo alloy list ndiyo imwe nzvimbo izere nemisungo yakavanzika. Hongu, simbi isina tsvina zvakajairika, asi 'stainless' inovhara 304, 316, 17-4 PH, uye vamwe, imwe neimwe iine akasiyana siyana ekukanda uye kusimba maitiro. 316 inodzikira kupfuura kabhoni simbi uye inogara ichipisa kubvaruka kana gating system isina kugadzirwa kuti igare iyo. Takadzidza izvi nenzira yakaoma pachirongwa chepakutanga chemidziyo yemugungwa. Madhindi acho aida 316, uye takaiisa magedhi sezvataizoita nokuda kwesimbi yakapfava. Mutengo wegoho waive wakashata, uine mitswe yaipenya kubva panosangana magedhi. Yaive yemhando yepamusoro yekutevera iyo spec pasina kushandisa iyo nzira ruzivo rweiyo chaiyo alloy.
Iyo yakakosha alloys - cobalt-based uye nickel-based alloys - imhuka yakasiyana. Havana kungo'nyanya kunyungudika.' Kunyungudika kwavo kunowanzo kuderera, vanogona kupatsanurwa kwekutanga, uye vane tsika yakashata yekuita negoko kana chemistry isiriyo. Kubudirira pano kushoma nezve brute force uye zvimwe nezve finesse: chaiyo pre-kupisa tembiricha ye mold, kudzora kwakasimba pamusoro pekudurura nekukurumidza uye tembiricha, uye kazhinji, post-casting kupisa kurapwa haisi sarudzo asi chikamu chakakosha chekuzadzisa inodiwa microstructure. Kana ini ndichiona yakavamba yakaita seQSY ichinyatso nyora aya alloys, zvinoratidza kuti vangangove vakaisa mari muhunyanzvi hwesimbi uye kudzora maitiro anodiwa kuzvibata, kwete chete kugona kwechoto.
Cast iron, nepo ichiita seyakanyanya kuregerera, ine yayo pachayo quirks mukudyara mari. Kuwana kuenderana kuumbwa kwegraphite muzvikamu zvitete kunonetsa. Iko kukurumidza kutonhora kunowanikwa muceramic shell process kunogona kutungamirira kumicheto yakatonhora (white iron), zvichiita kuti chikamu chacho chisagadzirike. Izvi zvinowanzoda kugadziriswa kune inoculant kana kugadziridza kuduku kwechikamu chechikamu.
Iyo CNC Handshake: Sei Machining Isiri Yekufungidzira
Izvi zvinotungamira kune chinhu chakakosha chinowanzo furatirwa: handoff kubva pakukandira kuenda kumichina. Chikamu chakakwana-se-kukanda hachina basa kana chisingakwanisi kuchengetwa chakachengeteka muCNC vise kana kana yakaoma datum nzvimbo isingavimbike. Ichi ndicho chikonzero kubatanidzwa kwekukanda uye CNC machining pasi pedenga remba, sezvinoita QSY, ibasa guru rekushandisa. Iwo mainjiniya ekukanda anogona kugadzira muti wewakisi uye anosanganisira machining allowances zvichienderana nekudzikira chaiko uye kumonyorora mapatani avanoona kune alloy yakapihwa. Ivo vanogona kuwedzera mabhegi ekukanda munzvimbo dzisina-dzakaoma chaizvo kuti machinist ashandise sezvigadziriso.
Ndanga ndiri kudivi remachining ndichiedza kubata yakaoma-investment-cast turbine blade isina inobatana inogadzirisa mapoinzi. Ihope huru. Iwe unopedzisira wagadzira shaya dzinodhura dzakapfava kana kutovaka chigadziriso chetsika, icho chinouraya muripo wemubhadharo wepedyo-net-shape casting. Kana zvikwata zvekukanda uye zvekugadzira zvichitaurirana kubva padanho rekugadzira, vanogona kubvumirana pazvinhu zvakaita sekuwedzera mafurati madiki anoenderana paflange kana kuona kuti bhora rakatenderedzwa zvakakwana kuti rishandiswe seyekutanga datum. Inoshandura nzira inotevedzana kuita imwe chete.
Iyo machining yezvikamu zvakakandwa zvinoshandawo seyekupedzisira mhando mhinduro loop. Iyo machinist ndiye wekutanga kuona subsurface porosity, yakaoma mavara, kana inclusions. Kana kukanda uye machining ari masangano akaparadzana, mhinduro iyi inononoka uye kazhinji inopikisa (kukanda kwako kwakashata kwakaputsa chishandiso changu). Kana iri chitoro chimwe chete, ruzivo rwunoyerera ruchidzokera kune yekutanga pasi kuti igadziriswe nekukurumidza.
Gating uye Kudyisa: Iyo Invisible Architecture
Kudzokera kunzira yakachena yekukanda. Dhizaini yegeji uye nzira yekudyisa — migero inoburitsa simbi uye madhamu anodyisa shrinkage — ndipo panosangana hunyanzvi nesainzi. Software simulation inobatsira ikozvino, asi ichiri kuda kududzira vane ruzivo. Chinangwa ndechekuwana kusimba kwekutungamira, uko chikamu chinosimbisa kubva kure kure kumashure kune chekudyisa, icho chinofanira kunge chiri chinhu chekupedzisira kusimba.
Kukundikana kwakajairika mu simbi yekukandira mari arikufungira zvisizvo izvi. Takambova nepombi yakakobvu nemadziro mune duplex stainless steel. Iyo yekufananidza yaitaridzika yakachena, asi isu takanga tine shrinkage mhango mune yakaoma inotakura-inotakura webhu. Iyo simulation yakanga yafungidzira yakakwana yekupisa zvimiro zvegoko. Muchokwadi, kuchinja kudiki kwenzvimbo mukukora kwegoko kwakagadzira nzvimbo inopisa iyo yakakanganisa kusimba kwekumberi. Mushonga wacho waiva wokuwedzera kutonhora kuduku, kwakaiswa zvine ungwaru—chidimbu chemhangura chinopinzwa mudemhe—kuti munharaunda yacho ikurumidze kutonhora. Ndiwo magadzirirwo madiki ehunyanzvi anobva mumakore ekuita nekuona.
Chimwe chinyengeri ndiko kudira pachayo. Nemaaloyi akawanda, haugone kungorasa simbi mukati. Pane nzira dzakaita sekurerekera kudirana kuderedza mhirizhonga uye kudzivirira kubata mhepo kana slag. Kune mamwe alloys anoshanda, unogona kutodururira pasi pemhepo inodzivirira. Aya ndiwo maitiro emaitiro anoparadzanisa commodity caster kubva kune yehunyanzvi.
Chiyero Chaicho: Kuenderana Kwenguva
Saka, chii chinotsanangura anokwanisa Investment casting mutengesi? Hakusi kugona kugadzira imwe yakakwana prototype. Iko kugona kumhanya batch 001 uye batch zana ine yakafanana dimensional kugadzikana, kupedzwa kwepamusoro, uye michina zvinhu. Apa ndipo apo makore makumi matatu ekushanda kwefemu yakaita seQingdao Qiangsenyuan Technology inova chinhu chinobatika. Zvinoreva kuti vanogona kunge vakadzikamisa maitiro avo akasiyana-slurry viscosity, stucco application, dewaxing autoclave cycles, vira remoto mazinga-kuburikidza nekusingaperi kutarisa uye kugadzirisa.
Kusawirirana kunorevawo kubata mapatani ewakisi. Majekiseni emugero wewakisi, wakisi inozvisanganisa pachayo (inogona kuva yemuridzi), uye machengeterwo ewakisi zvese zvinokanganisa zviyero zvekupedzisira. Chitoro chine ruzivo rwenguva refu chine dhatabhesi ye shrinkage zvinhu zveakasiyana alloys uye chikamu geometries inoenda kupfuura hunhu hwemabhuku, inonatswa neyakayerwa nhoroondo yavo.
Pakupedzisira, kubudirira kwesimbi yekudyara kukanda chirango chekutonga kwakabatana. Kunzwisisa kuti sarudzo mukamuri yewakisi inoungira muchoto chekupisa, uye kuti kuchengetedza pazvinhu zvegoko kunogona kuita mari yakawanda mukugadzira zvimedu. Nzira yacho inobudisa zvakavanzika zvayo zvishoma nezvishoma, kuburikidza nekucherechedza kwevarwere uye dzimwe nguva kukundikana kunorwadza. Kana yaitwa nemazvo, inogadzira zvinhu zvine simba rinoshamisa, zvakaoma kunzwisisa, uye zvinoshanda — asi kusvika ikoko hakuna chinhu chiri nyore. Iri rakadzama, rinoshanda cheni yechikonzero uye mhedzisiro yauri kunyatso kuisa mari mairi kana ukasarudza mudiwa kune yako castings.
