Mukamva 'kuponyedwa kwachitsulo chachitsulo', lingaliro lanthawi yomweyo limalumphira kumagulu azinthu - 4140, 4340, 8620 - ndi lonjezo la ma geometries ovuta. Ndiyo nkhani ya kabukuka. Nkhani yeniyeni, yomwe imatsimikizira ngati gawo likukhala kapena kufa muutumiki, limayamba mutayika bokosi pa chemistry. Ndi za 'momwe', osati chabe 'chiyani'. Ndawona mapangidwe ambiri omwe amatchula kuti alloy yogwira ntchito kwambiri amalephera chifukwa kumvetsetsa kwa ndondomeko kunalibe. Kukopa kumamveka bwino: mbali zapafupi ndi ukonde, kutsirizika kwapamwamba kwambiri, ufulu wamapangidwe. Koma kusiyana pakati pa chikoka chimenecho ndi gawo logwira ntchito lomwe limakhala pamsonkhano ndipamene ntchito yeniyeni imachitika.
The Core Dance: Alloy Behaviour and Process Windows
Tiye tikambirane za kusungunuka. Ndi zitsulo za aloyi, simukungotsanulira zitsulo zamadzimadzi; mukuwongolera gulu lazinthu zomwe aliyense amafuna kuti azichita mosiyana pakukhazikika. Chromium, molybdenum, faifi tambala - zilipo kuti zikhale zamphamvu komanso zolimba, komanso zimasintha mawonekedwe olimba. Vuto lomwe anthu ambiri amakumana nalo ndikuthiramo ngati chitsulo chokhazikika cha kaboni. Si. The mamasukidwe akayendedwe amasintha, fluidity kusintha. Ngati njira yanu yolowera ndi yokwera idapangidwa kuti ikhale ya 'chitsulo', mukuyitanitsa kutsika kwamphamvu m'malo oyipa kwambiri, omwe nthawi zambiri amabisika mkati. Ndikukumbukira gulu la mikono ya lever ya hydraulic system, mu 8630, yomwe idadutsa kuwunika koyambirira koma idalephera pakuyesa kutopa. Pamwamba pawothyoka adawonetsa chibowo chapamwamba chapang'onopang'ono pamiyendo yolimba kwambiri. Chitsanzocho chinali changwiro, msonkhano wa sera unali wabwino. Nkhani yake? Kutentha kothira kunali kokwera kwambiri kutengera mawonekedwe amtundu wa aloyiyo, zomwe zimalimbikitsa kachulukidwe kake. Tinayimbanso, osati ndi nambala ya bukhu, koma mwa kuyesa kumva ndi kuyesa motsatizana, ndipo vutolo linazimiririka.
Apa ndi pamene chipolopolo chimakhala chovuta. Si nkhungu chabe. Kwa zitsulo za alloy, zomwe nthawi zambiri zimakhala ndi kutentha kwapamwamba, kutentha kwa chipolopolo cha chipolopolo ndi permeability sikungatheke. Chigoba chomwe chili chofooka kwambiri chimang'ambika kapena kupunduka; imodzi yokhala ndi misampha yochepa imatchera mpweya, zomwe zimatsogolera ku dzenje kapena kuwomba. Takhazikika pamakina osakanikirana a silika okhala ndi ma binder enieni a ntchito yathu ya aloyi wapamwamba kwambiri. Ndi njira yomwe idabadwa kuyambira zaka zakung'amba zipolopolo (kwenikweni) ndikuwunika zolephera. Mumaphunzira kuti kuzungulira kwa dewaxing kwa autoclave kumafunikanso ngati slurry viscosity - phulusa lotsalira kuchokera panjira yosapsa bwino limatha kuyambitsa zolakwika pakutulutsa mawu.
Chithandizo cha kutentha ndi pamene mphamvu ya alloy imatsegulidwa kapena kuwonongeka. Mutha kupanga geometry yabwino mu 4140, koma ngati kutentha kuli kolakwika, mutha kugwiritsanso ntchito zinthu zotsika mtengo. Vuto lokhala ndi mabizinesi ang'onoang'ono ndilo kuchuluka kwa magawo omwe nthawi zambiri amasinthasintha. Gawo lopyapyala lidzazizira ndikusintha mosiyana ndi kanyumba kakang'ono panthawi yozimitsa. Tasunthira kumalo oziziritsa gasi wothamanga kwambiri m'ng'anjo za vacuum kuti muziziziritsa mayunifolomu pazigawo zofunika kwambiri. Koma ngakhale apo, izo siziri-ndi-kuyiwala. Muyenera kudziwa komwe mungayike ma thermocouples, momwe mungakhazikitsire magawo kuti muchepetse kupotoza. Ndi kukambirana mobwerezabwereza pakati pa maziko ndi chotenthetsera kutentha. Ndakhala ndikukangana ndi makasitomala omwe akufuna kulimba kumodzi pagawo limodzi ndi 4:1 gawo losiyana - sizingatheke popanda kunyengerera kwina. Chofunika ndikuwongolera zoyembekeza ndikuyang'ana pa kuuma ndi microstructure m'madera ovuta kwambiri.
Precision Machining: Wothandizira Wofunika
Palibe kuyika ndalama komwe kuli 'mawonekedwe a ukonde' pagawo lachitsulo chololera kwambiri. Nthawi zonse pamakhala malo okwerera, obowola, kapena ulusi womwe umafunikira kukonzedwa. Apa ndipamene mgwirizano - kapena kulekanitsa - pakati pa kuponyera ndi makina kumatanthawuza mtengo womaliza. Ife timachita zathu CNC makina m'nyumba, ndipo kuphatikiza koyima ndikokusintha masewera. Chifukwa chiyani? Chifukwa makina omwe amakumana ndi mawanga olimba kapena porosity mosayembekezereka mu bowo lovuta akhoza kuyenda molunjika kumalo oyambira ndikukambirana za chipikacho ndi woyang'anira wosungunuka.
Tengani mpope nyumba tinapanga CF8M zosapanga dzimbiri (zovuta zofanana zitsulo aloyi ambiri ponena machinability). Nkhope ya as-cast flange inali yabwino, koma chibowo cha shaft chisindikizo chimafunikira kumalizidwa kwagalasi komanso kulolerana kolimba. Masamba oyambira adawonetsa mawonekedwe ang'onoang'ono, obalalika pang'ono. Osakwanira kutayikira, koma zokwanira kudandaula kasitomala. Chifukwa tidawongolera njira zonse ziwirizi, titha kuzitsatanso momwe zimakhalira pamoto wotentha. Tinasintha chizolowezicho, ndipo gulu lotsatira linapanga makina ngati batala. Ngati makinawo adatulutsidwa kunja, njira yobwereza ikadakhala milungu yayitali, ndikusuntha pakati. Kwa makampani ngati Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd., njira yophatikizika imeneyi, yomwe imatenga zaka makumi atatu, ndiyo imathetsa mavuto. Mutha kuwona filosofi yawo patsamba lawo https://www.tsingtaocnc.com - amalemba chipolopolo nkhungu kuponyera, kuponya ndalama,ndi CNC makina monga ntchito zofunika pazifukwa. Ndi kuzindikira kuti gawolo silinathe mpaka litakonzedwa.
Kamangidwe kake kwa machining castings ndi luso lake lakuda. Simukumanga pa billet; mukukankhira pa kuponya nthawi zina-kwachilendo. Kupeza malo otayidwa kumafuna kukonzekera mosamala kuti mupewe kukulitsa kulolerana kwa kuponyera. Nthawi zambiri timapanga zomangira zomwe zimatengera ma datamu omwe amakhazikitsidwa panthawi yomwe akuponya - nthawi zina kuphatikiza zoyikapo zomwe zimazimitsidwa pomaliza. Imawonjezera sitepe, koma imatsimikizira kulondola kwamalo pakati pa zinthu zomwe zimaponyedwa ndi zomwe zimapangidwa ndi makina.
Zakuthupi: Pamene Chitsulo Sichikukwanira
Mawu akuti 'aloyi zitsulo' ndi chidebe chachikulu. Kusankha pakati pa aloyi otsika ngati 4110 ndi chitsulo chachitsulo monga H13 ndizofunikira, osati zowonjezera. Pazovala zapamwamba ngati zotchingira valavu kapena mbale zovala, tasamukira kusukulu zosinthidwa ndikuwonjezera vanadium kuti apange carbide. Njira yoponyera izi ndi yankhanza - kutentha kwambiri, machitidwe ankhanza a zipolopolo, komanso kuziziritsa koyendetsedwa bwino kuti tipewe kusweka. Ndiwowopsa kwambiri, mphotho yayikulu. Tidataya mtengo wonse wa zida za H13 kamodzi chifukwa chophatikiza kutsanulira kozizira kwambiri komanso chipolopolo chomwe chinali chokhuthala kwambiri. Kupsinjika kwamafuta kunali kokwanira kuyambitsa misozi yotentha mu gawo lililonse. Phunziro lokwera mtengo polemekeza malire azenera la ndondomeko ya banja lililonse la aloyi.
Ndiye pali dziko la ma aloyi apadera omwe amatchulidwa ndi machitidwe ngati QSY - opangidwa ndi faifi tambala komanso opangidwa ndi cobalt. Ngakhale kuti sizimangokhala 'zitsulo', nthawi zambiri zimagwera pansi pa maambulera a aloyi kwa ogula ambiri. Mfundo zake ndi zofanana koma zimakulitsidwa. Zinthu zogwira ntchito, zowongola zolimba zamafuta, komanso nthawi zambiri za HIP zodzaza (Hot Isostatic Pressing) zimafuna kuponya pambuyo. Kugwira ntchito ndi zipangizozi kumakuphunzitsani kudzichepetsa. Malire anu a zolakwika akucheperachepera. Kupambana apa, komabe, ngati tsamba lodalirika la Inconel 718 turbine blade, ndi lomwe limapanga mbiri ya oyambitsa aloyi zitsulo ndalama kuponyera ntchito.
Chitsimikizo cha zinthu ndi gawo lina. Kwa ma alloys amakalasi amalonda, satifiketi yosungunuka ikhoza kukhala yokwanira. Pazamlengalenga kapena ntchito yodzitchinjiriza, mukuyang'ana kutsata kwathunthu: nambala ya kutentha, gwero la katundu wa bar, chemistry yochokera mu labu yovomerezeka, makuponi oyesera amakina opangidwa kuchokera kutentha komweko ndikukonzedwa motsatira magawo. Njira yopangira mapepala ndiyofunikanso ngati kuponya komweko. Ndi dongosolo lomwe limatsimikizira kudalirika koma limawonjezera kwambiri. Simungathe 'kukwapula' gulu la certified 4340; ndizochitika zolembedwa, zoyendetsedwa kuchokera kuzinthu zopangira mpaka pakuwunika komaliza.
The Design Feedback Loop
Uwu ndiwo ntchito yofunika kwambiri yomwe maziko abwino amapereka: kulangiza pakupanga kupanga. Akatswiri amapangira ntchito, zomwe ndi zolondola. Koma nthawi zina radius imatchulidwa ngati 0.5mm chifukwa makina a CAD adasinthidwa, osati chifukwa ndizovuta kwambiri. Kuponyera muzitsulo za alloy kumabweretsa mavuto - kupsinjika maganizo, kulephera kumanga zipolopolo, pafupifupi kutsika kotsimikizika. Tikukankhira mmbuyo, ndikupangira utali wowonjezera wa 2mm, ndipo 99% ya nthawiyo, ndiyovomerezeka. Ndi zokambirana zazing'ono izi zomwe zimakulitsa gawo.
Poyamba tinali ndi pulaketi ya bulaketi yokhala ndi mipanda yokongola komanso yocholowana kuti tichepetse kulemera. Zinkawoneka bwino pazenera. Muzitsulo za alloy, zinali zoopsa. Mamembala opyapyalawo adazizira kwambiri, ndikupanga malo osasunthika, ndipo chipolopolocho sichinathe kuchotsedwa bwino pamabowo ovuta. Tidagwira ntchito ndi wopanga, tidawawonetsa njira zolephereka kuchokera ku mayesero athu, ndipo tinapanga mgwirizano wosavuta, wokhazikika wa nthiti zomwe zimakwaniritsa zolinga zouma ndi kulemera. Mbali yomaliza inali yopambana, koma inkawoneka mosiyana ndi masomphenya oyambirira. Ndiko mgwirizano. Gwero ngati Mtengo wa QSY, ndi mbiri yake yayitali, imapereka chidziwitso chozama ichi. Sizongopanga ndondomeko ya sera; ndi za kutsogolera kukwaniritsidwa konse kopangidwa kwa lingaliro.
Mapulogalamu oyerekeza ndi chida, osati mneneri. Timagwiritsa ntchito chitsanzo cha solidification mwachipembedzo. Zimatiwonetsa malo otentha kwambiri ndikuwongolera kakhazikitsidwe kokwera. Koma nkhokwe zapa pulogalamuyo ndizodziwika. Mchitidwe weniweni wa 4150 melt wanu, ndi kusakaniza kwanu kobwerezabwereza, mu chinyezi cha zomera zanu, ndi zosiyana. Kuyerekezera kumakupatsani poyambira, lingaliro. Kenako mumayesa zoyeserera zenizeni, zitsanzo zamagawo, kuyeza kutalika kwa mikono ya dendrite, ndikusintha mtundu wanu kuti ukhale weniweni. Ndi njira yopitilira. Chikhulupiriro chakhungu pamapu amtundu woyerekeza chapangitsa kuti anthu ambiri atsike pa dzenje la akalulu.
Economics ndi Real-World Viability
Pomaliza, tiyeni tinene mosabisa: aloyi zitsulo ndalama kuponyera sizotsika mtengo. Mtengo wa zida zopangira phula ndi wokwera. Njirayi ndi yogwira ntchito komanso yopatsa mphamvu. Zimangomveka bwino pazachuma mukafuna kuphatikiza ma geometry ovuta, kumaliza bwino kwapamwamba, ndi makina amakina a alloy. Zotsalira zotsutsana ndi kupanga kapena kupanga makina olimba nthawi zambiri zimakhala zapakati - mazana mpaka zidutswa zikwi zingapo. Kwa ma prototypes amodzi, nthawi zambiri amakhala okwera mtengo pokhapokha ngati palibe njira ina yomwe ingapange gawolo.
Mtengo uli mu kuphatikiza. Posachedwapa tidapanga gawo la gearbox lomwe mwachizolowezi limapangidwa kuchokera ku zidutswa zisanu zopanga komanso zomangika, zomangidwa pamodzi. Timayiyika ngati imodzi kuponya ndalama mu 8620, ndi magazini okhawo okhala ndi mabowo ofunikira makina. Tinachotsa nthawi yosonkhanitsa, zovuta za kugwirizanitsa, ndi njira zomwe zingathe kutayikira. Mtengo wa zida zam'mbuyomu udakwezedwa panthawi yopanga, ndipo mtengo wonse pagawo lililonse udatsika pafupifupi 30%. Ndiwo malo okoma.
Chifukwa chake, mukamawunika gwero, yang'anani kupyola pa mndandanda wa zida. Funsani za machitidwe awo enieni a aloyi. Funsani zitsanzo za momwe adathetsera vuto la porosity kapena kusokoneza. Funsani ngati amasindikiza zomwe amaponya. Mayankho angakuuzeni ngati mukuchita ndi shopu yazamalonda kapena ukadaulo wothandizana nawo. Ndiko kusiyana pakati pa kupeza kuponya ndi kupeza chigawo chomwe chimagwira ntchito. Ndi zomwe masewerawa kwenikweni.
