AISI 8620 feme ea ho etsa matsete ha se poleloana feela - ke palo ea ts'ebetso. Ha terene ea hau ea lisebelisoa e tlameha ho pholoha lipotoloho tse 150,000 tlas'a 350 MPa hydraulic load, kapa ntlo ea hau ea phetisetso ea likoloi e mamella ts'oaetso e phetoang ea mocheso ho tloha -40 ° C ho ea + 180 ° C, khetho ea thepa le taolo ea ts'ebetso e khaotsa ho ba likhetho. Li fetoha tse sa buisanoeng. AISI 8620 tšepe e fana ka tekanyo e nepahetseng: ho thatafala ho tebileng ho tloha ho nickel-chromium-molybdenum alloying, microstructure e ntle ka mor'a carburizing, le ho tiea ho ikhethang ha motheo - * haeba * ts'ebetso ea ho lahlela e boloka botšepehi ba eona ba metallurgic. Ke moo barekisi ba bangata ba hlolehang - eseng kalafong ea mocheso, empa pejana: sebopeho sa hlobo, botsitso ba khetla, le taolo ea ho tiisa.
Hobaneng ha AISI 8620 e Batla Investment Casting — Eseng Lehlabathe kapa Eshoa
Ho chesoa ha lehlabathe ho etsa hore lijo-thollo li hohola haufi le mabota a hlobo; die casting ha e khone ho sebetsana le ntlha e phahameng ea ho qhibiliha ea AISI 8620 (1490 ° C) kapa kutloisiso ea eona ho mapetsong a pholileng a potlakileng. Investment casting e rarolla ka bobeli. Khetla ea eona ea ceramic e lumella ho tiea butle, ka tsela e tataisang - e bohlokoa bakeng sa ho fihlela botebo ba linyeoe tse ts'oanang nakong ea ho patoa ha koloi e latelang. Re lekanyelitse ho fihla ho 22% ntlafatso ea boemo bo thata ba "case-core transition" ho bapisa le lehlabathe le lekanang le likheo tsa lisebelisoa tse tšoanang. Ka nepo le ho feta: mochini o tsamaisang lipolanete oo re o fileng moreki oa koloi oa Tier-1 EV o bonts'itse ho hoholeha ho 0.08 mm ka mor'a lihora tse 500 tsa tlhahlobo e potlakileng ea moaparo — khahlano le 0.21 mm yuniti ea lehlabathe ea tlholisano. Phapang e ne e se machining. E ne e le as-cast microstructure.
Tse 'ne Tse sa Buisanoeng Femeng ea AISI 8620 Investment Casting
Ha se litheo tsohle tse tšoarang AISI 8620 ka thata e lekanang. Mona ke se arolang bokhoni ba bohlokoa-bohloki ho tsoa ho thepa:
- Lisebelisoa tse tala li theoha ho palo ea mocheso- ha ho motsoako oa li-batch. Ingot e 'ngoe le e' ngoe ea AISI 8620 e tiiselitsoe ho ASTM A304, ka litlaleho tse feletseng tsa spectrographic bakeng sa Ni (0.4-0.7%), Cr (0.4-0.6%), le Mo (0.15-0.25%). Ho kheloha ka ntle ho ± 0.03% ho baka karabelo ea boiketsetso.
- Li-protocol tsa ho omisa likhetla li lekanyelitsoe ho fihlela phoka, eseng nako. Mongobo o ka holimo ho 45% RH nakong ea dewaxing o baka micro-porosity sebakeng sa 5-12 µm-e sa bonahaleng ka X-ray empa e le koluoa ka tlas'a mokhathala. Li-kilns tsa rona li kena ka nako ea sebele ea RH le mocheso metsotsoana e meng le e meng e 90.
- Khatello ea pele ea carburizing ho 650 ° C bakeng sa lihora tse 4—eseng boikgethelo. Matšoenyeho a sa foleng a khopamisa likere nakong ea ho thatafala ha linyeoe. Re netefatsa khatello ea maikutlo ka ho cheka mekoti ea ho cheka lisampole tsa sengoloa sa pele.
- CMM-based as-cast tlhahlobo pele ho mochini ofe kapa ofe. Re hlahloba li-callouts tse 12 tse mahlonoko tsa GD&T-ho kenyeletsoa boemo ba bokaholimo ba mapheo a meno a gear le mamello ea maemo a kamano ea bore-to-sefahleho-mohatong oa boemo bo botala. Haeba e hloleha mona, ha ho na tokiso ea CNC e bolokang karolo.
Moo Lifeme tse Tloaelehileng li Sehang Likhutlo—le Kamoo re sa Etsang Kateng
Lifeme tse ling tsa AISI 8620 tse kenyang matsete li tlola mochini o hloekisang pele ho alloy vacuum, ho nka hore mokhoa o tloaelehileng oa ho qhibiliha oa EAF o lekane. Empa litaba tsa oksijene tse kaholimo ho 20 ppm li theha likhoele tsa oxide tse qalang ho kenya meno a gear. Re sebelisa ho hloekisa VIM + ESR bakeng sa litaelo tsohle tsa sefofane le likoloi-ho fokotsa O₂ ho <8 ppm le sebabole ho ya ho <0.002%. Tsela e 'ngoe e khaoletsang: ho sebelisa likhetla tse akaretsang ho e-na le li-slurries tse thehiloeng ho zircon tse ntlafalitsoeng bakeng sa litšepe tse phahameng tsa alloy. Liaparo tse tloaelehileng li phunyeletsa ho 1400 ° C, li hlahisa li-inclusions tsa refractory. Moetso oa rona oa seretse o kenyelletsa 12% e kopantseng silica binder le kabo ea boholo ba phatsa e netefalitsoeng ke laser diffraction-batch e 'ngoe le e 'ngoe.
Hangata bareki ba botsa: "Na u ka tšoara ± 0.025 mm bophara ba lisekoere tsa 120 mm?" E, empa feela haeba phapang ea botenya ba lerako le se nang letho e lula ka har'a ± 0.3 mm. Ke ka lebaka leo lienjineri tsa rona tsa lisebelisoa li tsamaisang papiso ea ho tiisa (ho sebelisa MAGMASOFT®) * pele * tumello ea mohlala. Re etsa 'mapa oa li-gradients tsa mocheso ho pholletsa le sefate sa casting, ebe re lokisa keting ho felisa libaka tse chesang. Kotareng e fetileng, sena se ile sa thibela likere tse 37 tse lahliloeng ka tatellano e le 'ngoe bakeng sa kopano ea li-axle tse nyalisitsoeng.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD.: Precision E Thehiloe ka Taeo
E thehiloe Qingdao, QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. e sebetsa setsing se tiisitsoeng sa ISO 9001 moo tlhahiso ea matsete ea AISI 8620 e sa arohanngoang - e kopantsoe. Mechine ea CNC e etsahala mokatong o le mong, ka loops ea data ea CMM e arolelanoang. Ha sekheo sa gear se fihla ho tsoa ho lahleloa, jiometri ea eona ea 'nete e fepa ka kotloloho matšelisong a sesebelisoa sa CNC - ha ho na ho kenella ka letsoho. Mananeo a kalafo ea mocheso a hokahane le ho lahla linomoro tsa lotho ho MES ea rona, ka hona, li-parameter tsa carburizing li ipapisitse le liphetho tsa liteko tsa pele tsa boima bo tsoang mochesong oo.
Ha re rekise likarolo. Re fana ka boitokisetso ba tshebetso. Seo se bolela ho netefatsa lipaterone tsa mesh ea gear ka optical profilometry pele e romelloa. Ho bolela ho fana ka li-cert tse felletseng tsa thepa, lirekoto tsa kaho ea likhetla, le li-micrograph tsa kalafo ka mor'a mocheso ha u li kopa. Ho bolela ho ts'oara li-alloys tse kholo tsa AISI 8620 ho tsoa ho barekisi ba bararo ba netefalitsoeng - ka hona, tšitiso ea phepelo ha e liehe kemiso ea hau ea mohlala.
Feme ea ho etsa matsete ea AISI 8620 e fumana ts'epo eseng ka libukana, empa ka ho pheta-pheta: boemo bo thata bo ts'oanang ho li-unit tse 500, bophelo bo ts'oanang ba mokhathala ho pholletsa le lilemo tse tharo tsa tlhahiso, botsitso bo ts'oanang ka mor'a linako tse 10,000 tsa mocheso. Ke mokhoa o tloaelehileng oa QINGDAO QIANGSENYUAN TECHNOLOGY e kopanang - eseng ka linako tse ling, empa ka mokhoa o hlophisitsoeng. Hobane ka lisebelisoa tse nepahetseng le lisebelisoa tsa likoloi, "haufi ka ho lekaneng" ha e eo. E etsa hantle feela.
