1 Kufotokozera za zochitika zolakwika
Pamene extruding patsekeke mbiri, mutu nthawi zonse zikande, ndi chilema mlingo pafupifupi 100%. Mawonekedwe olakwika ambiri ndi awa:
2 Kusanthula koyambirira
2.1 Kutengera komwe kuli chilema ndi mawonekedwe a chilemacho, ndi delamination ndi peeling.
2.2 Choyambitsa: Chifukwa chakuti chikopa cha ndodo yoponyera yapitayo chinkakulungidwa m'bowolo, kusagwirizana, kusenda, ndi zinthu zowola zinkawonekera pamutu woponyera wa ndodo yotsatira.
3 Kuzindikira ndi kusanthula
Kusanthula kwa microscope ya ma elekitironi kukulitsa kutsika, kukulitsa kwakukulu ndi zolakwika zapakatikati pa ndodo yoponya zidachitika motsatana.
3.1 Kukulitsa kwa ndodo yoponya
11 inchi 6060 kuponyera ndodo otsika makulitsidwe pamwamba tsankho 6.08mm
3.2 Ndodo yoponyera kukweza kwakukulu
Pafupi ndi epidermis Segregation layer yogawa mzere malo
Kuponyera ndodo 1/2 malo
3.3 Electron microscope scanning of the defect
Kwezani malo omwe ali ndi vuto nthawi 200
Chithunzi champhamvu champhamvu
EDS chigawo kusanthula
4 Kufotokozera mwachidule zotsatira za kusanthula
4.1 Chosanjikiza chokhazikika cha 6mm chimawonekera pamtunda wokulirapo wa ndodo yoponyera. Kusiyanitsa ndi eutectic yotsika kwambiri, yomwe imayambitsidwa ndi kuzizira kwa kuponyera. Maonekedwe a macroscopic ndi oyera komanso onyezimira, ndipo malire okhala ndi matrix ndi omveka;
4.2 Kukula kwakukulu kumasonyeza kuti pali pores m'mphepete mwa ndodo yoponyera, zomwe zimasonyeza kuti kuzizira kumakhala kwakukulu kwambiri ndipo madzi a aluminiyumu samadyetsedwa mokwanira. Pamawonekedwe pakati pa kusanjikizana ndi matrix, gawo lachiwiri ndilosowa kwambiri komanso losiya, lomwe ndi dera losauka. Kutalika kwa ndodo yoponyera ndi 1/2 Kukhalapo kwa dendrites pamalopo ndi kugawidwa kosagwirizana kwa zigawozi kumawonetseranso kugawanika kwa pamwamba ndi zikhalidwe za kukula kwa dendrites;
4.3 Chithunzi cha chigawo cha chigawo cha 200x cha 200x cha microscope scan electron chimasonyeza kuti pamwamba pake ndi yovuta pamene khungu likusenda, ndipo pamwamba pake ndi yosalala pamene khungu silikusenda. Pambuyo pa kusanthula kwa EDS, mfundo za 1, 2, 3, ndi 6 ndizo malo opanda chilema, ndipo zolembazo zili ndi C1, K, ndi Na ndi zinthu zitatu, zomwe zimasonyeza kuti pali chigawo choyenga chomwe chilipo;
4.4 Zigawo za C ndi 0 mu zigawo za 1, 2, ndi 6 ndizopamwamba, ndipo zigawo za Mg, Si, Cu, ndi Fe pa mfundo 2 ndizokwera kwambiri kuposa zomwe zili pa mfundo 1 ndi 6, zomwe zimasonyeza kuti malo a chilema ndi osagwirizana ndipo pali zonyansa zapamtunda zomwe zimakhudzidwa;
4.5 Anachita kafukufuku wachigawo pa mfundo za 2 ndi 3 ndipo adapeza kuti zigawozo zinali ndi Ca element, zomwe zimasonyeza kuti ufa wa talcum ukhoza kukhala wokhudzidwa pamwamba pa ndodo ya aluminiyumu panthawi yoponya.
5 Mwachidule
Pambuyo pa kusanthula pamwamba, zikhoza kuwoneka kuti chifukwa cha kukhalapo kwa tsankho, woyenga, ufa wa talcum ndi slag inclusions pamwamba pa ndodo ya aluminiyamu, mapangidwe ake ndi osagwirizana, ndipo khungu limakulungidwa mu nkhungu panthawi ya extrusion, kuchititsa kuti pamutu pakhale chilema. Pochepetsa kutentha kwa ndodo yoponyera ndi kukulitsa makulidwe otsalira, zovuta zowonongeka ndi zowonongeka zimatha kuchepetsedwa kapena kuthetsedwa; njira yothandiza kwambiri ndikuwonjezera makina opukutira ndi kutulutsa.
Adasinthidwa ndi May Jiang kuchokera ku MAT Aluminium
Nthawi yotumiza: Jun-12-2024
