Akatswiri akamatchula zida za cobalt alloy machining mapampu a hydraulic, ma valve otsika, kapena ma shafts ovala kwambiri, samangosankha zinthu - akubetcha pakukhazikika kwa 300 MPa, kukana kugunda pa 650 ° C, ndi kusasinthika kwapang'onopang'ono pamagulu 500. Ndicho chifukwa chake kufunafuna wodalirika cobalt aloyi Machining magawo fakitale nthawi zambiri sizimathera ndi mitengo yamitengo. Zimayamba ndi kuyankha kwazitsulo, kuwongolera njira zambiri, komanso kulolerana zero pakugawikana kwa carbide mu AMS 5387 kapena T800-grade castings.
Chifukwa chiyani ma aloyi a cobalt amafunikira zambiri kuposa kuthekera kwa CNC
Ma superalloys opangidwa ndi cobalt monga Stellite 6B, Haynes 188, ndi eni ake a T800 amakana kuvala ndi dzimbiri-komanso akupera zida 3-5× mwachangu kuposa chitsulo chosapanga dzimbiri. Tawonapo masitolo akugwiritsa ntchito manja amtundu wa cobalt kuti awononge 40% ya magawo oyamba chifukwa cha macheza obwera chifukwa cha mafunde amkati. Chifukwa chake? Kukhazikitsa zida zolimba zomwe zimanyalanyaza kusagwirizana kwa kukula kwamafuta pakati pa cobalt (10.4 µm/m·K) ndi mbale za aluminiyamu. Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., ntchito iliyonse ya cobalt imayamba ndi mapu a chipukuta misozi-amatsimikiziridwa ndi kusanthula kwa infrared panthawi yovuta. Ndi momwe timagwirira ± 0.008 mm kuzungulira pa 120-mm-diameter cobalt aloyi mapulagi pamene tikusunga Ra ≤0.4 µm pa malo osindikiza.
Mphamvu zinayi zosakambidwa za fakitale yowona ya cobalt alloy Machining
Malo omwe amadzinenera ukadaulo wa cobalt ayenera kupereka kupitilira kuthamanga. Kutengera zaka 12 zopanga zida zapampu, mphamvu zinayi izi zimalekanitsa mabwenzi otsimikiziridwa ndi ogulitsa omwe ali ndi chiyembekezo:
- Kufufuza kwazinthu mpaka kutentha nambala-osati ziphaso zokha. Kuchita kwa Cobalt kumadalira zomwe zili mu carbon ndi tungsten; Kupatuka kwa 0.02% kwa kaboni mu AMS 5387 kumasintha kuuma kuchokera ku 42 HRC kupita ku 49 HRC, kuyika pachiwopsezo chosweka pang'onopang'ono pakukweza.
- Kuphatikizika kwa kuponyedwa kwa-machining mayendedwe-palibe ma handoffs pakati pa foundry ndi shopu ya makina. Nyumba zokhala ndi ndalama za cobalt zimachepa mosayembekezereka pokhapokha ngati makina opangira makina amangowonetsa mawonekedwe a datum. Timayika nyumba za silinda mkati mwa maola 72 a shakeout, pogwiritsa ntchito CMM yomweyi yomwe imatsimikizira ma geometry akuponya.
- Kutentha mankhwala kalunzanitsidwe-kuwongolera njira kuyenera kutsogola kukonza komaliza kuti muchepetse kupsinjika kotsalira. Koma kuchulukitsa kwambiri kumachepetsa chromium carbides, kusokoneza kukana kwa dzimbiri. Zolemba zathu za ng'anjo zimalumikizidwa ndi nambala ya serial ya gawo lililonse ndipo zimalumikizidwa ndi malipoti a CMM atatha kutentha.
- Kutsimikizika kwa GD&T musanadulidwe-makamaka kulolerana kwa mbiri pamilomo ya cobalt. Kuyitana kwa mbiri ya 0.05 mm pampando wokhazikika sikutheka ndi mphero wamba. Timatsanzira kupatuka kwa njira ya zida mu VERICUT, kenako ndikutsimikizira ndi makina owonera ma contour - osati ma CMM okha.
Kumene ogulitsa wamba akulephera - komanso momwe mafakitale okhazikika amayankhira
Opanga ena amachitira cobalt ngati chitsulo chowumitsidwa: zakudya zomwezo, zoziziritsa kukhosi zomwezo, kuwunika komweko. Izi zimalephera chifukwa kutsika kwamafuta kwa cobalt kumatchinga kutentha pamphepete. Tidawona makina amtundu wa cobalt aloyi 6 akulephera kuyezetsa utsi wa mchere pambuyo pa maola 200-osati kuchokera ku zolakwika zakuthupi, koma kuchokera ku ming'alu yaying'ono yoyambitsidwa ndi kukakamizidwa kosayenera kwa kusefukira kwamadzi (kupitirira 12 bar pa 3-mm-diameter zobowolera mkati). Yankho lathu? Minimum quantity lubrication (MQL) yokhala ndi mafuta opangidwa ndi ester, yoperekedwa pa 80 psi kudzera pamilomo yozungulira, yolumikizidwa ndi spindle RPM. Kukhulupirika kwapamwamba kudakwera 70%, ndipo moyo wa zida udachulukira kawiri.
Kusiyana kwina kofala: kuyesa kogwira ntchito. Pulagi ya cobalt "siyichita" miyeso ikadutsa. Iyenera kusindikiza pa bar 414 pomwe ikuzungulira 120 rpm motsutsana ndi mipando 420 yopanda banga. Timayesa chilichonse pamakina opangira ma hydraulic omwe amafanana ndi ma torque enieni, kutentha, ndi kuthamanga kwanthawi yayitali - data yomwe idalowetsedwa ndikugawidwa ndi makasitomala.
Kusankha fakitale yanu ya cobalt alloy Machining: mndandanda wazochita
Musanatumize zojambula, funsani mafunso asanu awa-ndipo funsani mayankho olembedwa:
- Kodi mutha kupereka ma rekodi owongolera kutentha kwa maere atatu omaliza a AMS 5387 omwe atumizidwa?
- Kodi utali wanu wotalika bwanji wosachiritsika wa 8-mm-diameter cobalt bores-ndipo ndi chida chanji chomwe chimakwaniritsa izi?
- Kodi mumapanga kuyesa kwa akupanga pambuyo pa makina pazigawo zovuta kwambiri kuposa 25 mm?
- Kodi mumatsimikizira bwanji kukhulupirika kwapampando wamagetsi a cobalt? (Mayankho ovomerezeka: kuyeza kwa white-etch layer, microhardness gradient mapu, kapena SEM fractography—osati kungowerenga kwa Ra.)
- Kodi mutha kukhala ndi malo enieni a ± 0.015 mm pamamita atatu a coaxial pakukhazikitsa kumodzi kwa chogudubuza chapakati cha cobalt cha 180-mm-utali?
Ngati yankho liri losamveka bwino, lachedwetsedwa, kapena "njira zokhazikika," pitilizani kuyang'ana. Cobalt samakhululukira malingaliro.
Cholemba chomaliza: kulondola si dipatimenti-ndikutsatana
Zida zamphamvu kwambiri za cobalt zimachokera pakulumikizana kolimba pakati pa sayansi yazinthu, machining physics, ndi kutsimikizika kogwira ntchito. Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., izi zikutanthauza kuti akatswiri opanga mankhwala amasintha zinthu za vanadium potengera kuchuluka kwa makina a sabata yamawa, opanga mapulogalamu a CNC amasintha mitengo yazakudya pa masensa omwe amavala nthawi yeniyeni, ndipo akatswiri opanga makina amakana mbali yodutsa macheke onse a GD&T ngati mawonekedwe ake otsalira a MP0 agwera kunja -520. Kutsatizana kumeneku—zinthu → ndondomeko → kuyeza → ntchito—ndichifukwa chake mainjiniya amabwereranso kukagwira ntchito ndi fakitale ya cobalt alloy machining parts chaka ndi chaka. Kulondola sikuyezedwa mu ma microns okha. Imayesedwa mwachikhulupiriro.
