Anthu ambiri akamva za 'ma turbine blades' amawona zithunzi zowoneka bwino, zonyezimira zomwe zikuzungulira mu injini ya jeti kapena pamalo opangira magetsi. Maganizo olakwika omwe anthu ambiri amawaganizira ndi akuti zonse zimatengera mawonekedwe a aerodynamic. Ngakhale zili zovuta, nkhani yeniyeni - yomwe imasunga mainjiniya usiku - imachitika nthawi yayitali isanawone mpweya uliwonse. Ndi za kupulumuka mkati mwa gehena weniweni: kutentha kwakukulu, mphamvu yapakati kuyesa kung'amba zitsulo, ndi mpweya wowononga. Kupeza geometry molondola ndi vuto limodzi, koma kupanga chidutswa cha chitsulo kukhala modalirika mu chilengedwe ndi kumene zaka zambiri za foundry ndi Machining luso amabwera. Ndiko kumene ukatswiri weniweni wa makampani ndi zinthu zakuya ndi processing mbiri, monga Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), amakhala wosakambitsirana. Akhala mumasewera ochita masewera olimbitsa thupi komanso olondola kwazaka zopitilira 30, zomwe mu gawoli, zikutanthauza kuti mwina awona mtundu uliwonse wa porosity, misozi yotentha, komanso kugwedezeka komwe mungaganizire.
Maziko: Zimayamba ndi Nkhungu ndi Kusungunuka
Simungathe kupanga tsamba langwiro kuchokera pakupanga kolakwika. Ndi zophweka choncho. Kwa magwiridwe antchito apamwamba masamba a turbine, makamaka muzamlengalenga kapena ma turbines otenthetsera kwambiri, nthawi zonse timalankhula za kuponya ndalama, kapena kuponya nkhungu. Ndondomeko ya sera imakupatsirani njira zovuta zozizirira zamkati - njira za serpentine zomwe zili mkati mwa tsamba zomwe ndi zozizwitsa zamakono zamakono. Koma matsenga, kapena tsoka, zimachitika panthawi yothira. Ndi zida monga ma superalloys opangidwa ndi faifi tambala, kutentha kothira ndi nkhungu preheat iyenera kuvina bwino. Kuzizira kwambiri, ndipo mumapeza zolakwika; kutentha kwambiri, ndipo mukhoza kutenga nkhungu kapena kukula kwambewu. Kuyang'ana kwautali kwa QSY pa nkhungu ya chipolopolo ndi kuponya ndalama kwa ma aloyi apadera si njira yotsatsa; ndi sitepe yoyambira. Ndikukumbukira zaka za projekiti mmbuyo momwe tinali ndi zovuta zosagwirizana ndi micro-porosity m'dera la blade - gawo lomwe limatsekeka mu diski. Zinapezeka kuti mapangidwe a gating system kuchokera ku shopu yamapatani anali atazimitsidwa pang'ono, zomwe zimapangitsa kuti pakhale chipwirikiti m'malo ovuta kwambiri. Zinatenga masabata akuyesa ndi mapangidwe osiyanasiyana a sprue kuti akonze.
Ndiye pali zinthu zomwezo. Chitsulo chosapanga dzimbiri ndi gulu lalikulu, koma pamitundu yambiri yamagetsi yamagetsi, mukusunthira ku cobalt kapena ma aloyi opangidwa ndi faifi tambala. Izi sizitsulo zanu zatsiku ndi tsiku. Zimakhala zowoneka bwino zikasungunuka, zimachepa m'njira zina, ndipo zimakhala zovuta kugwiritsa ntchito zida pambuyo pake. Kusankha pakati pa kuponyedwa kolimba molunjika kapena ngakhale kuponyedwa kwa kristalo limodzi ndi lingaliro lofunika kwambiri la mtengo-vs-performance lomwe lapangidwa pano. Kukhoza kwa foundry kuwongolera kutsogolo kolimba ndi chilichonse. Ulamuliro wamakampani wazaka 30, ngati QSY, ukuwonetsa kuti apanga chidziwitso chambiri-chomwe sichili m'mabuku - momwe angathanirane ndi kusungunuka kwamasamba osiyanasiyana ndi magwiritsidwe osiyanasiyana.
Pambuyo poponyedwa, cheke choyamba chovuta sichiri cham'mbali. Ndi radiographic ndi akupanga anayendera. Kuyang'ana zolakwika zamkati zimenezo. Mutha kukhala ndi tsamba lomwe limawoneka bwino kunja koma lili ndi gulu la porosity m'mphepete mwawo. Ndi bomba la nthawi. Malo opangira makina ndi malo ogulitsa makina ayenera kugwirizanitsa pano, chifukwa ngati NDT ipeza cholakwika m'malo ovuta, gawolo ndilopanda. Palibe kuchuluka kwa matsenga a CNC komwe kungakonze malo opanda kanthu.
The Machining Tightrope: Kusunga Kulekerera pa Gawo Lopotoka
Apa ndi pomwe mphira umakumana ndi msewu. Tsamba la turbine lopanda kanthu si chinthu chabwino, chopanda kupsinjika cha aluminiyamu. Ndi chinthu chokhotakhota, cholimba ngati gehena chokhala ndi zotsalira za kuziziritsa. Makina oyamba opangira makina, nthawi zambiri muzu (mkuyu kapena nkhunda), amayika datum pa chilichonse chotsatira. Ngati simukutsimikizira izi molondola, mbiri yonse ya aerodynamic idzazimitsidwa. Timagwiritsa ntchito zida zapadera zomwe zimamatira pamlengalenga popanda kuzisokoneza, chomwe ndi chinyengo chokha. Mphamvu yokhotakhota iyenera kukhala yokwanira kuti igwirizane ndi zodula, koma osati mochuluka kwambiri imabwereranso pambuyo pake.
CNC Machining aloyi izi ndi pang'onopang'ono, mtengo ndondomeko. Simumadula kwambiri. Ndi za kuthamanga kwambiri kwa spindle, mitengo yeniyeni ya chakudya, ndi zida zamtengo wapatali za carbide kapena ceramic zomwe zimatha mwachangu modabwitsa. Phokoso la odulidwa limasintha pamene chida chikuyamba kupita-mumapeza phokoso lapamwamba. Katswiri wabwino amamvetsera. Kuthamanga koziziritsa ndi kuyika kwake ndikofunikiranso, makamaka popera m'mphepete mwake. Simungalole kutentha kuchuluke, kapena mumayambitsa kupanikizika komwe kumazungulira gawolo mutachotsa. Ndawona masamba angapo pomwe miyeso yam'mphepete inali yabwino pa CMM itangopanga makina, koma idasinthidwa ndi ochepa inu mutakhala usiku wonse. Imeneyo inali nkhani yoziziritsira yoperekera; tinali kusefukira koma osafikira mtsinjewo mdera lodulidwa pagawo lopyapyalalo.
Uwu ndiye mtengo wa othandizira ophatikizika. Pamene kuponyera ndi CNC Machining ali pansi pa denga limodzi, monga pa ntchito QSY, ndemanga kuzungulira ndi lalifupi. Ngati opanga makinawo apeza malo olimba osasinthika kapena kusintha kwa miyeso komwe kumatsatiridwa ndi mawonekedwe oponyera, amatha kubwereranso kumalo oyambira ndikusintha momwe zimakhalira. Kuyesera kuchita izi pakati pa ogulitsa awiri osiyana kumaphatikizapo masabata a maimelo, kusinthana mlandu, ndi kuchedwa.
Umphumphu Pamwamba: Kuposa Kusalala
Pambuyo pa makina, pamwamba sikonzeka. Kugaya ndi mphero kumasiya kagawo kakang'ono ka zinthu zosokonekera, nthawi zambiri ndi misozi yaying'ono kapena kupsinjika kotsalira. Kwa gawo lomwe likudzaza ma cyclic, iyi ndi tsamba labwino kwambiri loyambitsa crack. Ndicho chifukwa chake njira monga kuwomberedwa ndi peening ndizovomerezeka. Imawombera pamwamba ndi zofalitsa zazing'ono kuti zipangitse kupanikizika kosanjikiza, kutseka bwino chitseko pa ming'alu ya pamwamba. Koma liyenera kulamuliridwa—kulimba kwake, kufalikira kwake, mbali yake. Kuyang'ana m'mphepete mwake mowonda kwambiri kumatha kuswanitsa bwino.
Ndiye pali zokutira. Thermal Barrier Coatings (TBCs) ndi coat ya ceramic yomwe nthawi zambiri mumawona ikupereka masamba owoneka bwino, owoneka bwino pang'ono. Koma pansi pake pamakhala chovala chomangira, monga MCrAlY (M kukhala faifi tambala kapena cobalt), chogwiritsidwa ntchito kudzera pa plasma spray kapena HVOF. Chovala chomangira ichi ndi chomwe chimapereka kukana kwa okosijeni ndikutsata TBC. Kukonzekera zokutira uku ndi sitepe ina yolondola. Pamwamba pake pamafunika mawonekedwe olimba (nthawi zambiri kudzera mu kuphulika kwa grit) kuti agwirizane ndi makina, ndipo ayenera kukhala aukhondo. Zotsalira zilizonse zamafuta zimatha kuyambitsa delamination pambuyo pake. Ndikukumbukira kusanthula kolephera komwe tsamba linakhetsa TBC muutumiki. Chifukwa chake? Kusintha kwa zosungunulira zoyeretsera musanaphike zomwe zidasiya filimu yofooka, yosawoneka. Zinatenga miyezi kuti tifufuze.
Kwa masamba ena, makamaka m'zigawo zotentha, mutha kukhalanso ndi mabowo ozizira obowoledwa kudzera pa EDM kapena laser. Tibowo ndi ting'onoting'ono, nthawi zambiri timakhala ndi ngodya, ndipo kayikedwe kake ndi kukongola kwake ndizofunikira kwambiri popanga filimu yozizira yoteteza pamwamba pa tsamba. Kubowola bowo lomwe limatuluka pang'ono pang'ono kungathe kusokoneza filimuyo ndikupanga malo otentha kwambiri.
Zowona Zapadziko Lonse Zosokoneza ndi Zolephera
Mapangidwe a mabuku sakhalabe ndi moyo akakumana ndi zenizeni. Kusinthanitsa kwachikale kumakhala pakati pakuchita bwino kwa aerodynamic ndi kupanga. Wopangayo angafunike chotchinga chamlengalenga chowoneka bwino chowoneka bwino chokhala ndi utali wozungulira m'mphepete mwake. Woyambitsayo anganene kuti ndizosatheka kuponya popanda chiwopsezo chachikulu chifukwa cha zolakwika. Wopanga makinawo anganene kuti ndizosalimba kwambiri kuti zitheke komanso makina popanda macheza kapena kupindika. Kusagwirizana nthawi zambiri kumakhala gawo lokhuthala pang'ono, kapena mawonekedwe opangira kuti azitha kugwiritsa ntchito zida zolimba. Uku ndiko kukambirana kosalekeza.
Njira zolephereka ndizophunzitsa. Kutopa nthawi zambiri kumayambira pamizu kapena pamphambano wa airfoil ndi nsanja. Kukwawa - kusinthika kwapang'onopang'ono, kokhazikika pansi pa kutentha ndi kupsinjika - kumawoneka ngati kutalika kwapang'onopang'ono ndi kusapindika kwa tsamba kwa maola masauzande. Kukokoloka kwa tinthu ting'onoting'ono tomwe timadyako kumatha kuwononga mbali yakutsogolo, ngati kuphulika kwa mchenga. Koma chimodzi mwazinthu zozembera kwambiri ndikumavala movutikira pamizu yolumikizana ndi turbine disk. Kusuntha kwa Microscopic pansi pa katundu kumayambitsa kufooka, zomwe zingayambitse kupsinjika maganizo ndi kuyambitsa ming'alu. Ichi ndichifukwa chake kulondola kwa mizu, yopangidwa ndi sitolo yodalirika ya CNC, ndikofunikira kwambiri - kuti muchepetse kusuntha koyambirirako.
Mumaphunzira kulemekeza unyolo wonse. Kuponyedwa kwangwiro kowonongeka ndi kukhazikitsidwa koyipa kwa makina. Tsamba lopangidwa bwino lomwe limasokonezedwa ndi njira yosalamulirika yokutira. Ndi unyolo wokhala ndi maulalo ambiri, ndipo kudalirika kwathunthu ndikwabwino ngati kofooka kwambiri. Ichi ndichifukwa chake kuyanjana ndi wothandizira omwe amawongolera maulalo angapo, kuchokera pakusungunuka kupita ku gawo lomalizidwa lopangidwa ndi makina, kumachepetsa chiopsezo. Sizokhudza kuphweka kokha; ndizokhudza kuyankha mlandu.
Kuyang'ana M'tsogolo: The Constant Push
Munda suyima. Nthawi zonse pamakhala chiwongolero cha kutentha kwapamwamba kuti injini igwire bwino ntchito, yomwe imayendetsa chitukuko chatsopano cha alloy komanso mapangidwe amphamvu amkati ozizirira mkati. Kupanga kowonjezera (kusindikiza kwa 3D) tsopano kuli mumsanganizo wa ma prototyping ovuta kuzizirira ma geometries omwe sangathe kuponya. Koma pakupanga kwakukulu, kudalirika kwakukulu, kuyika ndalama zophatikizidwa ndi makina olondola a CNC kudzakhala kovutirapo kwa nthawi yayitali. Chidziwitso sichili mu mapulogalamu kapena zida zamakina; zili m'chikumbukiro cha amisiri ndi akatswiri omwe adawotcha masauzande ambiri, kukhazikitsa masauzande ambiri, ndikusanthula magawo mazana ambiri omwe adalephera.
Ndicho chuma chosagwirika. Mukayang'ana mbiri ya kampani, monga ya Qingdao Qiangsenyuan Technology (QSY) pa tsngtaocnc.com, mzere wofunikira si mndandanda wazinthu monga kuponya ndalama ndi CNC Machining. Ndi gawo lazaka zopitilira 30. Mubizinesi iyi, ndandanda yanthawiyo ikutanthauza kuti adutsa zovuta zakuthupi izi, athetsa zovuta zosokonekerazi, ndikupanga zowongolera zoyenera. Mwina apanga chilichonse kuyambira ma turbine amagetsi opangira magetsi mpaka ang'onoang'ono, ovuta kwa mayunitsi othandizira. Zomwe zimachitikazi zimamasulira mwachindunji kuzinthu zochepa zomwe sizikudziwika komanso zodabwitsa zochepa panthawi yopanga - zomwe, pazinthu zovuta kwambiri monga turbine tsamba, ndi zomwe mukulipira pamapeto pake.
Ndiye nthawi ina mukadzawona tsamba la turbine, iwalani malo owala kwa sekondi imodzi. Ganizirani za ulendowu: nkhungu yeniyeni ya ceramic, kutsanulira koyendetsedwa ndi superalloy pa kutentha kochititsa khungu, kuchotsa pang'onopang'ono, mosamala zitsulo ndi pulogalamu ya CNC kuti muvumbulutse mawonekedwe omaliza, ndi mankhwala a pamwamba omwe amazitetezera kunkhondo. Ndi luso laukadaulo lazitsulo zogwiritsidwa ntchito komanso zamakina, pomwe ma micron aliwonse opatuka amafotokoza nkhani.
