Xa usiva 'i-investment casting,' iingqondo ezininzi zitsibela ngqo 'kwiindawo ezintsonkothileyo' okanye 'inkqubo elahlekileyo yewax.' Akulunganga oko, kodwa sisiqalo esihlala siqaqambisa ubunyani obungacacanga. Ibali lokwenyani alikho malunga nokufikelela kwiindonga ezibhityileyo okanye iinkcukacha ezintle; imalunga nothethathethwano olungayekeleliyo phakathi kwamabhongo oyilo, ukuziphatha kwezinto eziphathekayo, nokuba nokwenzeka kwezoqoqosho. Amaphepha amaninzi athembisa inyanga, kodwa ubunyani bomgangatho wevenkile luhlengahlengiso olungagungqiyo lobunzima beqokobhe, iqhinga lokungena, kunye nokutshintsha kwe-thermal. Kuncinci malunga nomlingo kwaye ngakumbi malunga nokulawulwa kokulalanisa.
Umdlalo weShell: Ngakumbi kuneMngundo nje
Iqokobhe kulapho idabi lidla ngokuphumelela okanye liphulukane khona. Asinto nje i-negative yenxalenye; yisakhiwo, i-thermal, kunye nojongano lwemichiza. Sithetha nge-ceramic slurries kunye ne-stucco, kodwa usathana ukwimijikelo yokumisa kunye nokufuma okukhoyo. Ndikhe ndabona ibhetshi ngenye indlela egqibeleleyo utyalo mali iicores zemizimba yevalvu ziyaqhekeka ngenxa yokuba ukufuma kwegumbi lokomisa kunyuke nge-10% ngobusuku. Iqokobhe lalibonakala ligqibelele, kodwa uxinzelelo olufihlakeleyo lwalukhona, lulindele ukwaphuka ngexesha le-dewax. Nantso ke into oyifundayo ngokonakalisa izinto ezixabisa amakhulu ambalwa eedola, hayi kwincwadi.
Apha kulapho amava okusebenza ixesha elide, njengeminyaka engama-30-kunye nasemva kwefemu efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), iba yinto ebambekayo. Ayikokuba nezixhobo nje kuphela; imalunga nokuba nolwazi olumiliselweyo malunga nendlela iinguqu zemozulu zalapha ekhaya, nokuba ngamaxesha onyaka, ezichaphazela ngayo i-viscosity enodaka kunye ne-kinetics yokomisa. Ukugxila kwabo kwi iqokobhe ngundo ukuphosa njengobuchule obuphambili ecaleni utyalo mali ithetha ukuqonda ukuba uqeqesho lokubumba lusisiseko. Awunakuzahlula ezi zimbini.
Kwaye imathiriyeli ibaluleke kakhulu. Ukugalela i-cobalt-based alloy kwiqokobhe eyenzelwe i-standard stainless yiresiphi yokusabela kweqokobhe kunye nokungcoliseka komhlaba. I-coefficients yokwandisa i-thermal kufuneka ihambelane. Kwi-alloys ene-nickel ephezulu, sihlala sitshintshela kwiidyasi zobuso ezikhethekileyo ezisekelwe kwi-zirconia ukuthintela ukugqitywa komphezulu we-orenji. Yinkcukacha, kodwa yinkcukacha ethatha isigqibo sokuba iblade ye-injini yomoya iyadlula i-NDT okanye ichithwe.
Ukuchaneka yinkqubo, hayi isithembiso
'Ukuchaneka okuphezulu' yindlela yokuthengisa efumaneka kuyo yonke indawo. Inyaniso kukuba, ukuchaneka kwi intricist investment casting sisiphumo sokwehla kwezinto ezilawulwayo. Iqala ngepateni yewax. Ukuba inaliti yokufa ayifezekanga, okanye ubushushu be-wax kunye noxinzelelo alufakwanga, uphindaphinda loo mpazamo yejometri kwinyathelo ngalinye elilandelayo. Ndikhumbula iprojekthi yecandelo lesixhobo sotyando apho sileqa ukunyamezela ±0.1mm kumbhobho obalulekileyo. I utyalo mali inkqubo ebanjwe, kodwa ipateni ye-wax, enikezelwe ngumntu wesithathu, yayinoyilo oluncinci, olungahambelaniyo. Sichithe iiveki kumatshini wokulungisa ngaphambi kokuba sibuyele siphinde senze ubunjineli besixhobo se-wax. Inkqubo yokuphosa ikhulisa kuphela into oyinikayo.
Yiyo loo nto udibaniso lwe CNC Machining ayixoxisi ngokuchaneka kokwenyani. Ukusasa kukufumana ama-95% apho, rhoqo ngeenkcukacha ezimangalisayo. Kodwa loo 5% yokugqibela-indawo ebalulekileyo yedatha, imisonto, ubuso bokutywina-ifuna ukwenziwa ngoomatshini. Ivenkile enikezela zombini phantsi kophahla olunye, njenge QSY, ayongezi nje iinkonzo; balawula lonke ikhonkco lexabiso. Umchwephesha uyakuqonda ukucutha okunokwenzeka kokuphosa kunye namanqaku anokuthi agqwetheke, kwaye unokucwangcisa i-CNC ukuba icoce endaweni yokusika ngokungaboni. Inciphisa isihogo solungelelwaniso kwaye, okona kubaluleke kakhulu, ithintela umdlalo wokutyhola phakathi kwamasebe okuphosa kunye noomatshini xa inxalenye iphumile.
I-post-casting workflow kulapho unyamezelo oluninzi lwethiyori ludibana nenyani. Unyango lobushushu lokunciphisa uxinzelelo lunokujija inxalenye. Ngaba inkqubo yakho ichaza oko? Ngaba uyayilungisa ngexesha lonyango? Okanye ngaba uceba umsebenzi wokulungisa? Le asiyomibuzo yemfundo. Kwizindlu zempompo esizenzileyo kwi-duplex stainless, kuye kwafuneka siphuhlise isiko lokulungisa isisombululo ukuze sigcine ukucaba kweflange. Ngaphandle koko, ukucwangciswa okulandelayo bekungenakwenzeka ngaphandle kokulahlekelwa ubuncinci bodonga.
I-Alloy Equation: Ukukhetha uMlo oLungileyo
Ukukhethwa kwezinto eziphathekayo kudla ngokuqhutyelwa yimeko yokusetyenziswa kokugqibela-i-corrosion, ukushisa, ukugqoka. Kodwa ngokwembono yokuphosa, usapho ngalunye lwe-alloy lulwa ngokwahlukileyo. Intsimbi yokuphosa kunye nekhabhoni intsimbi baxolela ngokwentelekiso; zondla kakuhle, zinokuncipha okuqikelelweyo. Imiceli mngeni kubo imalunga nokuphepha ukubandakanywa okukhulu kunye nokufumana isandi kumacandelo ashinyeneyo.
Iintsimbi ezingenastainless, ngakumbi amabakala e-austenitic afana ne-316, zizilwanyana ezahlukileyo. Zinoluhlu olude lokukhenkceza, olulungele ukondla kodwa luthanda ukushwabana kancinci (i-porosity) kunye nokukrazuka okushushu ukuba isango lokungena kunye nokunyuka akwenziwanga ngobunono. Awunako nje ukukala ipateni yentsimbi yekhabhoni ye-stainless kwaye ulindele impumelelo. Ipateni yokuqinisa yahluke kakhulu.
Emva koko ungena kwindawo yee-alloys ezikhethekileyo-i-nickel-based and ialloys esekwe cobalt. Apha, ixabiso lezinto eziphathekayo liphezulu kangangokuba zonke iindawo ezilahlayo zibuhlungu. Bahlala bephoswa phantsi kwe-vacuum okanye umoya olawulwayo ukukhusela i-oxidation yezinto ezisebenzayo ezifana ne-aluminiyam kunye ne-titanium. Ulwelo lunokuba mbi, ngoko ke amacandelo kufuneka abe ngqindilili. Amanqaku abo aphezulu okunyibilika afuna iinkqubo eziqinileyo zamaqokobhe. Ukusebenza ngezi zixhobo kuncinci malunga nokuveliswa kwevolumu ephezulu kwaye ngaphezulu malunga nokwenza iresiphi egqibeleleyo, ehlala inye, inkqubo yeresiphi. Kulapho uqeqesho lwenkqubo luhlawula izabelo zalo eziphezulu. Ikhono elichaziweyo lenkampani ngezi ngxubevange, njengoko kubonwa kwipotifoliyo ye-QSY kwindawo yazo tsngtaocnc.com, luphawu lwenkqubo yabo engqongqo, ingelulo nje uluhlu lwezinto abazichukumisileyo.
Xa izinto zingahambi kakuhle: Ingqondo yokulungisa ingxaki
Uhlalutyo lokungaphumeleli luyingxenye yemfundo kakhulu yomsebenzi. Inxalenye iphuma inesiphako somphezulu, umngxuma wokushwabana, okanye ukuqhekeka. Ukusabela kwangoko kukutshintsha ubushushu bokugalela okanye iqokobhe lifudumale. Ngamanye amaxesha oko kuyasebenza. Ngokuqhelekileyo, yintlanzi ebomvu.
Ndikhumbula uthotho lwezinto ezifakwe elwandle ezibonisa ukuvaleka okubandayo kwiflange encinci. Sandisa iqondo lokugalela, elincede kancinci kodwa lanyusa ubungakanani beenkozo kunye neempawu zoomatshini. Owona mba walandelwa emva kwenkqubo yokungena. Intsimbi yayihamba kakhulu kwaye ilahlekelwa bubushushu obuninzi ngaphambi kokuba igcwalise loo flange yokugqibela. Sayila ngokutsha imbaleki ukuba ihambise isinyithi esishushu ngokuthe ngqo kuloo ndawo, songeza i-flow-off encinci, kwaye ingxaki yaphela ngaphandle kokuphazamisa i-metallurgy. Isifundo: impendulo idla ngokuba kwijiyometri yendlela yesinyithi engamanzi, hayi nje iparamitha yenkqubo.
Enye iklasi yokuxilongwa kakubi kwe-porosity. Ingaba yirhasi porosity evela kwiqokobhe elimanzi okanye umoya ovalelweyo? Okanye ngaba yi-shrinkage porosity ngenxa yokungondleki ngokwaneleyo? Irhasi porosity ithande ukubangqukuva kwaye ibengezele ngaphakathi. I-Shrinkage i-dendritic ngakumbi kwaye ingaqhelekanga. Enye ifuna iqokobhe elingcono lokubhaka okanye ulawulo lokukhupha amanzi; enye ifuna ukunyuka okukhulu okanye ukubanda. Ukufumana oku kungalunganga kuthetha ukuba ulungisa ingxaki engekhoyo iinyanga.
Inyani eDityanisiweyo: Ukusuka kwiCAD ukuya kwiCrate
Namhlanje, eyona isebenzayo intricist investment casting ayingomsebenzi wezandla ozimeleyo. Yimibhobho yedijithali ukuya emzimbeni. Iqala nge-DFM (uYilo lokuVeliswa) ingxelo kwimodeli ye-3D. Ngaba singayibhala? Ngaba sinokuyondla? Siwabeka phi amasango neentunjana? Lo msebenzi wentsebenziswano ongaphambili wonga iindleko ezinkulu ezantsi komsinga.
Ipateni ngokwayo isanda ngokuphindaphindiweyo i-3D eprintwe kwi-resin okanye i-wax-like materials for prototypes okanye imiqulu ephantsi. Oku kudlula izixhobo zemveli, kodwa yazisa imiceli mngeni yayo kunye neentsalela zokudinwa kunye nokuqhekeka kweqokobhe. Sisixhobo esimangalisayo, kodwa yenye inkqubo eguquguqukayo ukuya kwinkosi, hayi imbumbulu yesilivere.
Ekugqibeleni, yonke into ibuyela emva ekuqinisekiseni. Ukuhlolwa kwe-CMM, uvavanyo lwe-radiographic, uvavanyo loxinzelelo. Inxalenye ephosiweyo kufuneka iqinisekiswe ngokuchasene nenjongo yayo yokusebenza. Le datha evaliweyo yiyo evumela i-Foundry ukuba ingenzi nje iinxalenye, kodwa ukwenza izinto ezithembekileyo. Kuko oku kulawula ukuphela-ukusuka ekukhethweni kwe-alloy kunye iqokobhe ngundo ukuphosa nge utyalo mali kunye nokuphosa emva CNC Machining-leyo ichaza umniki-nkonzo onobuchule. Ijika umzobo ube yinto esebenzayo, ethembekileyo ehleli kwikhreyithi, elungele ukudityaniswa kwayo kokugqibela. Nantso isiphelo esingathandekiyo, esisebenzayo sayo yonke le ntsonkothi.
