Mumayang'ana mu 'investment casting inconel 718' ndipo mumapeza zambiri: mphamvu ya 1400 ° F, kuphulika kwabwino kwambiri, kukana kwa okosijeni mpaka 1300 ° C. Chimene simumapeza ndikumva kwa chipolopolo chikung'ambika pa sera, kapena mphindi yomira pamene lipoti la NDT likuwonetsa zofooka mu gawo lovuta. Pepala lokhazikika limapangitsa kuti limveke ngati vuto lathetsedwa. Si. Ndi kukambirana ndi physics, ndipo zitsulo nthawi zambiri zimakhala ndi mawu omaliza.
Aloyi Si Vuto. Njira Ndi.
Aliyense amakonzekera pa Inconel 718 yokha - kapangidwe kake, ma certification. Koma mu kuponya ndalama, aloyiyo ndi zopangira chabe. Vuto lenileni ndi ulendo wochoka ku sera mpaka kumaliza kuponya. 718 ili ndi chizolowezi choyipa chopanga gawo la Laves, ma brittle intermetallic compounds, ngati kulimba sikuyendetsedwa mwamphamvu. Inu simungakhoze kungotsanulira izo ngati 304 zosapanga dzimbiri. The matenthedwe makhalidwe ndi osiyana. Kutsika ndi kosiyana. Momwe zimachitira ndi chipolopolo cha ceramic ndizosiyana.
Ndikukumbukira gulu la gawo la turbine shroud. Geometry inali yopyapyala-mipanda koma yovuta. Tidakhala ndi chemistry yabwino, koma ma castings adalephera kuyesa kuphulika kwa kupsinjika. Vutolo? Tinkagwiritsa ntchito chipolopolo chokhazikika - chovala chodziwika bwino cha silika. 718, pamatenthedwe akutsanula, anali kuchita nawo mokwanira kuti awononge malire a tirigu. Icho sichinali chilema chachikulu, koma pansi pa kukulitsa, mumatha kuwona kuphulika. Tsamba lachipolopolo silinatchule kuyanjana kumeneko. Inu mumaphunzira izo movutikira.
Ndiko komwe zaka 30 za shopu zimakonda Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd. zimabwera mumasewera. Sikuti kukhala ndi ng'anjo; ndi za kukumbukira komwe kumagwira ntchito ndi maphikidwe a zipolopolo ndi ma aloyi opangidwa ndi faifi tambala. Webusaiti yawo, tsngtaocnc.com, amalemba ntchito zawo ndi ma alloys apadera, koma chidziwitso chenichenicho chiri m'mapepala awo opangira-zowonjezera kutentha kutentha ndi kuthamanga kwachangu komwe kumapangitsa kusiyana pakati pa kutulutsa phokoso ndi zidutswa.
Sera, Chipolopolo, ndi Kuvina kwa Kukulitsa Kutentha
Tiye tikambirane za chipolopolo. Kwa 718, nthawi zambiri mumachoka pamakina okhazikika a silika. Tinasamukira ku malaya opangidwa ndi zircon komanso zosunga zobwezeretsera za alumina-silicate. Chifukwa chiyani? Coefficient ya kukula kwa kutentha. Mufunika chipolopolocho kuti mupirire kutenthedwa kwa kutentha kwa ~ 1500 ° C zitsulo komanso kuti mukhale wofooka kuti muchotsedwe pambuyo pake osagwiritsa ntchito njira zachiwawa zomwe zingagwire ntchito-kulimbitsa pamwamba. Ndikuchita bwino.
Gawo la dewaxing ndilofunika kwambiri. Ndi chitsulo, autoclave dewaxing ndi yowongoka. Ndi aloyi yogwira ntchito kwambiri ngati 718, pomwe sera ingakhale yokulirapo kapena yokhala ndi zigawo zokhuthala, mutha kusweka chipolopolo chifukwa cha kuthamanga kwa nthunzi mwachangu ngati kuzungulira sikunayendetsedwe. Nthawi ina tinataya mtengo wonse wa nkhungu chifukwa kuzungulira kwa autoclave kunali koopsa. Chigobacho chinkawoneka bwino, koma ming'alu ya tsitsi imalola chitsulo kulowa, kupanga zipsepse zazikulu ndikuwononga kulondola kwake. Tsopano, nthawi zambiri timagwiritsa ntchito pang'onopang'ono, njira ya dewax ya flash pa ntchito zovuta 718, ngakhale zimawonjezera nthawi.
Kuwotcha zipolopolo, kapena kutenthetsa, ndi chigamulo china. Thirani mu chipolopolo chomwe chikuzizira kwambiri, ndipo mutha kusokoneza. Kutentha kwambiri, ndipo mutha kukokomeza momwe chipolopolo chachitsulo chimapangidwira ndikuwonjezera kukula kwambewu. Kwa zovuta Mtengo wa 718 kuponyera, nthawi zambiri timayang'ana kuti chipolopolo chiziwotha kutentha pafupifupi 1000 ° C, koma ndipamene timayenda pang'onopang'ono kuti tichotse zinthu zonse zomwe zimagwedezeka popanda kugwedeza ceramic. Si nambala yomwe mumapeza m'buku; ndi imodzi yomwe mumafika mutatha kutsanulira pang'ono.
Kupeza, Kudyetsa, ndi Kufunafuna Ubwino
Kudyetsa kuyika ndalama ku inconel 718 ndi luso mawonekedwe. Kuzizira kwake sikuli kokulirapo ngati ma superalloy ena, koma kumafunikirabe zokwera mowolowa manja, zotentha. Dongosolo la gating liyenera kupangidwa kuti lichepetse chipwirikiti - chipwirikiti chimatsogolera ku ma oxide inclusions, omwe amapha m'zigawo zamlengalenga. Timagwiritsa ntchito kayeseleledwe ka makompyuta tsopano, koma zoyerekeza zoyambirira nthawi zambiri zinali zabwino kwambiri. Amawonetsa kukhutitsidwa ndi kudyetsa bwino. Kuponya kwenikweni kungakhale ndi shrinkage porosity mu flange wandiweyani.
Kodi tikuphunzirapo chiyani? Kuyerekeza ndi kalozera, osati mneneri. Mukufunikabe kuwonjezera ma feeder a 718. Nthawi zambiri timagwiritsa ntchito manja a exothermic feeder omwe amapangidwira ma nickel alloys kuti chokwera chikhale chotentha kwambiri. Ngakhale zili choncho, nthawi zina mumayenera kuwonjezera kuzizira pang'ono m'malo abwino kuti mukakamize kukhazikika kolowera kumtunda. Ndi njira yosavuta yowunikira ndikubwerezabwereza. Wothandizana nawo ngati QSY, wokhala ndi mbiri yakuzama mkati chipolopolo nkhungu kuponyera ndi kuponya ndalama, nthawi zambiri imakhala ndi laibulale yamapangidwe otsimikizika a mabanja osiyanasiyana a alloy, chomwe ndi chiyambi chachikulu.
Pambuyo poponya, zipata ndi zokwera ndi chilombo chochotsa. 718 imagwira ntchito mwachangu kwambiri. Mukayesa kuwona kapena kuchipera ngati chitsulo cha kaboni, mutha kuwotcha masamba ndikupangitsa kuti pakhale ming'alu. Kudula kwa abrasive waterjet kapena macheka apadera okhala ndi chakudya choyenera komanso kuthamanga ndikofunikira. Ndi mtengo komanso nthawi yomwe ambiri amaiwala kuwerengera pazoyambira zawo zoyambirira.
Chithandizo cha Kutentha: Kumene Katundu Wapangidwa (kapena Wosweka)
Iyi ndiye malo omwe amalephera kulephera mumayendedwe operekera. Mumamva kumveka kokongola kuponya ndalama. Ndiye inu akuwononga mu kutentha azichitira ng'anjo. Kwa opangidwa 718, mankhwalawa ndi ofanana: chithandizo chamankhwala ndi zaka. Kwa cast 718, ndizosiyana. Mukuchita ndi as-cast microstructure, tsankho, ndi magawo omwe angakhale a Laves.
Mchitidwe wokhazikika ndi chithandizo cha homogenization choyamba-chogwira pafupi ndi 1100 ° C kwa maola kuti asungunuke ma Laves komanso ngakhale kupanga. Dumphani izi, kapena chitani molakwika, ndipo kukalamba kotsatira sikungabweretse mpweya wofunikira wa gamma double prime mofanana. Chotsatira? Zosagwirizana zamakina katundu. Ndawonapo ma castings akudutsa UT koma amalephera mayeso olimba a batch chifukwa kutentha kwanyengo kumatengera zinthu zopangira.
Kuwongolera kwamlengalenga sikungakambirane. Vacuum kapena argon. Mpweya uliwonse womwe umapezeka panthawi yotentha kwambiri umapangitsa kuti makutidwe ndi okosijeni kwambiri komanso kuchepa kwa zinthu zofunika kwambiri za alloying monga chromium. Simukungokweza pamwamba; mukusintha zitsulo zapakhungu. Tidaphunzira izi pambuyo poti gulu linatuluka mung'anjo yomwe imadziwika kuti ili ndi mpweya wotuwa wotuwa. Machining adavumbulutsa pitting. Chisindikizo cha ng'anjo chinali chitasokonezedwa. Tsopano, timayendetsa makuponi a mboni ndi katundu uliwonse kutsimikizira kuti mlengalenga ndi woyera.
Machining ndi Final Hurdle
Apa ndipamene QSY's Integrated model of kuponya ndalama ndi CNC makina kusonyeza mtengo wake. Machining cast 718 ndi nyama yosiyana ndi kupanga mnzake wopangidwa. Kuuma kumatha kukhala kosagwirizana, ndipo kubisika kwa micro-shrinkage kapena inclusions kumatha kuphwanya mphero yomaliza ya $ 200 nthawi yomweyo.
Mfungulo ndiyokhazikika, yokhazikika komanso yochepetsera. Simukupita kukapanga makina othamanga kwambiri kuno. Ndi yapang'onopang'ono komanso yokhazikika, yokhala ndi zoziziritsa kukhosi zoziziritsa kukhosi komanso kupewa kuuma kwa ntchito. Chida cha geometry ndichofunikira - chowotcha chabwino, m'mbali zakuthwa. Zida zosaoneka bwino zimangopaka zinthuzo ndikupanga kutentha kwambiri.
Chofunika kwambiri, kutsatizana kwa makina kuyenera kukonzedwa poganizira kupsinjika kotsalira kwa oponyawo. Mungafunike kusokoneza, ndiye kupsinjika maganizo, ndiyeno kumaliza makina. Ngati mutayesa kuchotsa zonsezo nthawi imodzi, gawolo likhoza kugwedezeka kwambiri litatha kutsekedwa, ndikupangitsa kuti likhale lopanda ntchito. Ndikukambirana komaliza, kosamala kuti tiwulule gawo labwino kwambiri kuchokera pamasewera ovuta, oyimba.
Ndiye Mtengo Weniweni Ndi Chiyani?
Mukawunika wopereka kuyika ndalama ku inconel 718, simukungogula mapaundi azitsulo. Mukugula mbiri yawo yolamulira ndondomeko, kumvetsetsa kwawo kwazitsulo, ndi kukumbukira kwawo kuthetsa mavuto. Mawu otsika mtengo nthawi zambiri amachokera ku sitolo yomwe amachitira ngati chitsulo chosapanga dzimbiri. Apereka gawo lomwe likuwoneka bwino koma lolephera pakuyesa kapena m'munda.
Ubwino wa wogwiritsa ntchito wokhazikika ndikupewa zolephera zowopsa, zochedwetsa mapulogalamu. Ndikudziwa kuti mapangidwe enaake a chipata amagwira ntchito pa geometry yeniyeni ya bulaketi, kapena kuti ufa wambiri wa ceramic uyenera kusinthidwa mu slurry viscosity ya 718. Izi sizinthu kupanga. Zili ngati zitsulo zopangidwa ndi bespoke. Mtengo weniweni ndi chitsimikizo kuti gawolo lidzachita pansi pamikhalidwe yomwe pepala lodziwika limafotokoza molimba mtima. Ndipo chitsimikizo chimenecho chimamangidwa pamaziko a zolakwa zakale, maphunziro ophunziridwa, ndi nzeru zopambana, zapansi pa sitolo.
