Pfupiso: A tekinoroji gwara reInconel 718 yekukanda mari yekukanda matambudziko, anosanganisira kupisa kupisa uye machining, uye izvo vatengi vanofanirwa kutarisa kune mutengesi.
Inconel 718 imwe yeinonyanya kushandiswa nickel-based superalloys. Inochengetedza simba repamusoro, kusamira, uye hupenyu hwekuneta patembiricha inosvika 700°C.
Izvi zvivakwa zvinoita kuti ive yakajairwa sarudzo yeaerospace injini zvikamu, magasi turbines, uye mafuta uye gasi zvishandiso.
Nekudaro, iwo maitiro akafanana anoita kuti Inconel 718 idiwe zvakare inoita kuti zviome kukanda uye muchina.
Pakutsvaga Inconel 718 kuisa mari zvikamu, vatengi vanowanzoona kuti havasi vese vanowana vanogona kuburitsa ruzha rwekukanda.
Kunzwisisa midzi yemetallurgical yematambudziko aya kunobatsira pane kungokumbira runyorwa rwezvitupa.
Zvitupa zvinoratidza kuti nzvimbo yakapfuura ongororo, kwete kuti maitiro ayo ekudzora anokwanisa kubata iyi chaiyo alloy.
Nei Inconel 718 Iine Chinonetsa kune Investment Casting
Investment casting yakanyatsoenderana neInconel 718 nekuti inogona kuburitsa yakaoma, padyo-mambure maumbirwo uye kuderedza huwandu hweinodhura superalloy inobviswa nemachining.
Asi iyo yekusimbisa maitiro ekukanda inounza mbiri dzekutanga njodzi njodzi.
Ngozi yeKupisa Kupwanya (Laves Phase)
Inconel 718 ine niobium (Nb). Pakati pematanho ekupedzisira ekusimba, iyo yakasara mvura inopfumiswa muNb, silicon, uye zvimwe zvinhu, kusimudzira kuumbwa kweLaves chikamu.
Tsvagiridzo inoratidza kuti kunyangwe yasara Laves chikamu mazinga akadzikira se0.14-0.35 wt% anogona kukanganisa kupisa ductility uye kusagadzikana kuputika zvivakwa.
Kuvapo kweLaves phase kunowedzera iyo inoshanda yechando siyana, ichisiya nzvimbo dzeinterdendritic pasina ductility yakakwana yekugonesa macontraction strains kunonoka mukusimba.
Pasi pemamiriro ekushisa, izvi zvinotungamirira kubvarura inopisa.
Mwero yekutonhodza ndiyo yekutanga shanduko yekudzora Laves chikamu. Kunonoka kutonhora kunobvumira kuwedzera niobium kupatsanurwa uye kunowedzera mukana wekuchengetedza zvakasara Laves chikamu pane tembiricha yekamuri; kukurumidza kutonhora kunogona kudzvinyirira zvishoma kuumbwa kwayo.
Nekuda kweizvozvo, kugona kwemugadziri wekudzora tembiricha yekupisa kupisa, kudururira tembiricha, uye masheji ekutonhodza anotungamira budiriro yayo mukudzivirira kupisa kunopisa.
Shrinkage uye Internal Porosity
Iyo shrinkage maitiro eInconel 718 anonzwa zvakanyanya kune hwindo rekuita. Zvidzidzo zvekutevedzera pane turbine blade castings zvinoratidza kuti kana mold yekugara nguva ichikwira kubva ku0 s kusvika 420 s, tembiricha yegoko inodonha kubva pa1000 ° C kusvika 860 ° C, uye yakazara shrinkage vhoriyamu uye frequency inowedzera zvinoenderana.
Izvi zvinoreva kuti kana kutungamira kwekupisa kusati kwadururwa kwakatsauka kubva pahwindo rakagadzirwa, porosity yemukati ichawedzera zvakanyanya.
Yemukati porosity muInconel 718 castings haisi yakajairika inomaly asi yakajairwa kutadza modhi inokonzerwa nekusakwana kwemaitiro maitiro.
Kune zvikamu zvinotakura kana kuneta-zvakakosha, kunyangwe mushure meHot Isostatic Pressing (HIP), micro-shrinkage inogona kuramba ichipfupisa hupenyu hwekuneta.
Naizvozvo, shrinkage njodzi inofanirwa kugadziriswa kubva kune gating system dhizaini uye yekusimbisa simulation matanho.
Post-Kukanda Zvinetso: Machining Inconel 718
Kunyangwe kuridza ruzha kuchiri kuunza zvakakosha machining matambudziko. Inconel 718 ine yakaderera yekupisa conductivity, inomisa kupisa kupisa padyo nechokushandisa, nepo chimiro chayo cheaustenitic chinokonzera kukurumidza kuoma basa pasi pekunetseka kwekucheka.
Iri basa-rakaomeswa dhizaini rinomhanyisa kupfeka kweflank, kugadzira kutenderera uko kucheka kunoita kuti zvinhu zviome, izvo zvinopfeka chishandiso nekukurumidza.
Nokuda kwekucheka zvigadziro, zvishandiso zvecarbide zvisina kuvharwa zvinoshanda zvakanaka mu 10-30 m / min range; nokuda kwekumhanya pamusoro pe40 m/min, yakavharwa carbide inoiswa ndiyo inonyanya kukodzera.
Iyi yekumhanyisa renji yakadzikira zvakanyanya pane yakajairwa maparamita ealuminium kana simbi yakajairwa, zvichireva kuti machining nguva uye mutengo wekushandisa weInconel 718 wakakwira.
Kubva pakuona kwekutenga, izvi zvinosimudza yakakosha yekuongorora nzvimbo: vanovamba vane in-house machining kugona kazhinji vane mukana pane izvo zvinongokanda uye outsource machining.
Inconel 718's kushanda-kuomesa maitiro inoda kurongeka optimization yekucheka paramita, nzira dzematurusi, uye kusimba kwekugadzirisa.
Kana iyo yakawanikwa ichidzora zvese zvekukanda kushivirira uye machining mvumo, inogona kutsanangura mamwe akakodzera mamiriro panguva yekukanda, ichidzikisa njodzi yekupfeka zvisina kujairika chishandiso kana kukuvara kwepamusoro kunokonzerwa nemvumo isina kufanira.
Maitiro ekuongorora iyo Inconel 718 Foundry
Kana uchiongorora vatengesi veInconel 718 castings, zvitupa chikumbaridzo, kwete mamiriro akakwana.
Izvi zvinotevera zvinogoneka zvinonyanya kuratidza kana nzvimbo inodzora alloy iyi zvechokwadi.
1. Kunyunguduka uye Kudurura Atmosphere Control. Inconel 718 inonzwa okisijeni, nitrogen, uye haidrojeni, inoda kuchengetedzwa kwakakodzera panguva yekunyunguduka nekudurura.
Vacuum Induction Melting (VIM) inogona kudzikamisa oxidation uye gasi pikicha pazvinoshanda, asi kwete ese Inconel 718 castings inoda VIM. Iyo nzira yemaitiro inofanirwa kusimbiswa inopesana nechikamu zvirevo uye anoshanda zviyero.
2. Heat Treatment Control. Iyo as-cast kuomarara kweInconel 718 haimiriri kuita kwekupedzisira sevhisi.
Iyo inowanzotsanangurwa kupisa kupisa nzira muindasitiri mabhuku ine mhinduro yekurapa panenge 980 ° C inoteverwa nekukurumidza kutonhora, yekutanga kuchembera pa720 ° C kwe8 maawa, choto kutonhora kusvika 620 ° C kwechipiri 8-awa kuchembera, uye kutonhora kwemhepo.
Uku kuchembera kwematanho maviri kunokonzeresa iyo γ ″ yekusimbisa chikamu chinokonzeresa simba reiyo alloy.
Kana mutengesi achishaya mavira anodzorwa uye tembiricha inoteedzera macurves, iyo yekukanda inogona kusangana nemetallurgical mhando zviyero asi ichitadza mechanical zvivakwa zvinodiwa.
3. Chikamu cheKuedza Kusina Kuparadza (NDT). Iyo yemukati shrinkage uye inopisa kuputika maitiro eInconel 718 zvinoreva kuti NDT haigone kuvimba nekutarisa kwekuona chete.
X-ray radiography inoona shrinkage yemukati uye kuputika, fluorescent penetrant inspection (FPI) inoratidza kukanganisa-kupwanya kwepamusoro, uye kuongororwa kwe ultrasonic kunogona kuwedzera pedyo-pamusoro kana kuongorora kwemukati.
Simbisa kana NDT inoitwa mukati-mumba kana kunze, uye kana nzira yekugamuchira inofanana nekushanda kwechikamu.
4. Material Traceability uye Batch Consistency. Iko kemikari yeimwe neimwe Inconel 718 kupisa-kunyanya Nb, Si, uye C mazinga-uye kutonhora kwayo nhoroondo inokanganisa Laves chikamu chekugadzira maitiro.
Inoda kupisa-nhamba-nhanho yekunyunguduka marekodhi, kupisa matanda ekurapa, uye NDT mishumo inzira yakananga yekuongorora kana hurongwa hwemupi hwakarongeka.
5. Kukandira-ku-Machining Kubatanidzwa. Sezvacherechedzwa, basa reInconel 718 rinoomesa rinoita kuti chimiro pakati pekukanda uye machining kuve chakanyanya.
Kana mutengesi achigona kubata kufambiswa kwese kwese-mumba, iko kurongeka kwekugovewa kwekushivirira, dhizaini yekubvumidza, uye nzira dzekugadzirisa hurema dzinowanzo shanda.
Mienzaniso yehunyanzvi hwekugadzira maalloys akaomarara, unogona kuongorora kugona kwedu.
Mashandisirwo-Chaicho Kufunga
Inconel 718 yekudyara kukanda kazhinji inowira muzvikamu zviviri zvekushandisa.
Aerospace injini uye gasi turbine hot-section structural components (senge casings, mounting flanges, and brackets) inoda yakakwira-cycle kuneta kuita, ine yakaderera kushivirira kwemukati porosity uye pamusoro pekuvimbika nyaya.
Oiri, gasi, uye midziyo yesimba zvinhu zvakaita semiviri yevharuvhu, mativi epombi, uye tsime remusoro zvinonyanya kutarisisa pane ngura kuramba uye kumanikidza kuperera, uko chakaremara kushivirira hwindo rezvinopisa-kutsemuka-sensitive asi zvisiri-kuneta-zvakakosha zvikamu zvingave zvakakura.
Izvi hazvireve kuti imwe application iri "nyore" kukanda. Zvinoreva kuti mupi wekuongorora kusimbisira kunofanirwa kusimuka nekushandiswa kwechikamu.
Inowanikwa ine rekodhi inowirirana yekuendesa pane zvisiri-yakakosha zvimiro zvekukanda inogona kunge isina iyo maitiro ekutonga uye zvinyorwa zvinyorwa zvinodiwa kune aerospace-giredhi Inconel 718 castings.
Kujekesa mashandisirwo echikamu chekupedzisira uye chiyero chinoshanda panguva yeRFQ nhanho inobatsira mutengesi kuona kana maitiro ayo achienderana, kudzivirira kuwanikwa kwemaitiro asina kuenderana ekugamuchirwa chete mushure mekupokana kwemhando.
