Ha lienjiniere li hlakisa Stellite 21 bakeng sa litulo tsa li-valve tse apereng haholo, tse nang le mocheso o phahameng kapa li-nozzles tsa pompo, ha ba ikhethele thepa feela—ba becha ka botsitso ba dimensional, microstructural consistency, le zero tolerance for batch-to-batch variation. Ke kahoo ho fumana ho tsoa ho 'nete Stellite 21 karolo fektheri e bohlokoa ho feta pele. Ha se lebenkele le leng le le leng le nepahetseng le ka sebetsanang le motsoako ona oa cobalt-chromium-tungsten: boima ba eona bo feteletseng (48-55 HRC as-cast), tšekamelo ea ho thatafatsa mosebetsi, le kutloisiso ea histori ea mocheso li hloka ho feta mechine ea CNC le litlaleho tsa tlhahlobo. E hloka taeo e netefalitsoeng ea ts'ebetso - ho pholletsa le ho lahlela, kalafo ea mocheso, machining a li-multi-axis, le netefatso e lumellanang le GD&T.
Hobaneng ha Stellite 21 e Hlōleha Matsohong a Fosahetseng—’me e Atleha Moo e Leng Bohlokoa
Re e bone habeli likhoeling tse 18 tse fetileng: OEM ea hydraulic ea Amerika Leboea e amohetse matlo a pompo ea piston ea Stellite 21 a nang le li-microcracks tse kaholimo kamora ho sila ho qetela. Sesosa sa ho qala? Morekisi o sebelisitse likheo tsa lehlabathe ntle le ho koala tharollo, ebe o sututsa lijo tse matla nakong ea ho phethola. Sephetho e ne e se sekhechana feela-e ne e le ho emisa tlhahiso ea libeke tse tharo le $ 220K ka nako ea ho theoha. Stellite 21 ha e "sebelisoa joalo ka tšepe e sa hloekang." Thermal conductivity ea eona ke 1/3 ea 316 stainless. Matla a ho itšeha a eketseha ka tsela e sa lebelloang. Bophelo ba lisebelisoa bo theoha ka 60% haeba phallo ea pholiso kapa geometry ea sesebelisoa e kheloha esita le 5°. Katleho e qala pele chip ea pele e fofa-ka setifikeiti sa thepa (AMS 5387 kapa ASTM F75), sebopeho sa lijo-thollo tse netefalitsoeng, le li-cycle tse ngotsoeng tsa homogenization.
Bokhoni ba 'nè bo sa Buisanoeng ba Feme ea Karolo ea Sebele ea Sebele 21
Feme ea 'nete ea Stellite 21 ha e amohele litšoantšo feela. E ba hloma lipotso—ebe e fana ka likarolo tse sebetsang, eseng feela ho feta tlhahlobo. Mona ke seo re se netefatsang mohahong o mong le o mong:
- Setifikeiti sa raw stock traceability: Mocheso o mong le o mong o na le li-certs tse feletseng tsa leloala-ho akarelletsa le cobalt content (≥53%), chromium (27-31%), tungsten (14-16%), le carbon (≤0.25%). Ha ho "equivalent grade" tse ling.
- Ho laolwa ha solidification casting: Ts'ebetso ea matsete bakeng sa li-nozzles tse tšesaane tsa lebota; centrifugal casting bakeng sa li-plug tsa cylindrical. Ka bobeli li hloka preheat e nepahetseng ea hlobo (1100-1200 ° C) le litekanyetso tse laoloang tsa ho pholisa ho qoba karohano ea carbide.
- Ho kopanya phekolo ea mocheso: Tharollo annealing ka 1175 ° C ± 10 ° C bakeng sa lihora tsa 2, e lateloa ke ho pholile ha moea-eseng sebōpi-ho notlela matrix a austenitic a uniform pele ho etsoa mochine.
- Netefatso ea 'mapa oa morao-rao oa mochini: Ha re leke sebaka se le seng feela. Teko ea Rockwell e tataisoang ke CMM ho pholletsa le libaka tse 9 ka karolo e 'ngoe e tiisa hore boima bo lula ka har'a 48–52 HRC-ha ho na lihlahisoa tse ka holimo ho 55 HRC (kotsi ea brittle) kapa ka tlase ho 46 HRC (ho se sebetse hantle).
Moo Mabenkele a Tloaelehileng a Emeng teng—Moo ho Nepahetseng ho Qalang teng
Barekisi ba bangata ba nka Stellite 21 e le "alloy e 'ngoe feela e sa tloaelehang." Empa mefokolo ea lefats'e ea 'nete e etsahala ka har'a sehokelo: lipakeng tsa shrinkage le ho kheloha ha mochini, lipakeng tsa ho khopama ha mocheso le li-callouts tsa GD&T, lipakeng tsa pheletso le matla a mokelikeli. Mohlala, matlo a rona a AMS 5387 Stellite 21 cylinder cylinder housings a etsa 3D optical scanning *pele* le *after* annealing ea ho imolla khatello ea maikutlo—hobane esita le 0.008 mm mesaletsa ea khatello ea maikutlo e ile ea tlisa concentricity ho feta meeli ea ISO 2768-mK. Re kenya likarolo tsohle tsa bohlokoa tsa ho tiisa tse nang le lithapo tse fetotsoeng taemane (Ra ≤0.4 µm), ebe re li netefatsa ka profilometry - eseng licheke tsa pono. E, re ts'oara beche e 'ngoe le e 'ngoe khahlano le ASTM E112 bakeng sa boholo ba lijo-thollo (ASTM 5 bonyane), hobane lithollo tse mahoashe li potlakisa ho lla tlas'a khatello ea cyclic.
Ho tloha ho Drawing ho isa ho Delivery: Seo Ha e le Hantle U se Fumanang
Haeba projeke ea hau e hloka likarolo tsa Stellite 21 - li-nozzles, litulo tsa li-valve, li-roller tse bohareng tsa shaft, li-plug tse tloaelehileng - u hloka ho feta mantsoe a qotsitsoeng. U hloka maikutlo a pele a tlhahiso. Re tšoaea likotsi pele lisebelisoa li qala: botenya ba lebota bo ka tlase ho 2.5 mm ka matsete a matsete, li-angles tse ka tlase ho 1.5°, kapa mamello ea GD&T e matla ho feta ±0.015 mm libakeng tse thata. Ts'ebetso ea rona e tšesaane e ts'ehetsa prototype e matha (e seng kae joalo ka likotoana tse 3) ka tlaleho e felletseng ea FAI, ebe sekala ka mokhoa o hloekileng ho isa ho 500+ units / khoeli ntle le tumello. Lead time? Libeke tse 12-16 bakeng sa li-casting tsa sehlooho sa pele, ho akarelletsa le NDT (UT + PT). Liodara tsa mochini feela li romelloa ka libeke tse 6-8. Likarolo tsohle li tsamaea ka sekepe ka mokhoa o felletseng oa ho latella: nomoro ea mocheso, lotho ea ho lahlela, sengoloa sa potoloho ea mocheso, tlaleho ea CMM, le 'mapa oa boima.
Stellite 21 ha e bue ka litšenyehelo - e mabapi le litlamorao. Polaka e hlōlehileng ho oli ea lebopong la leoatle le mefuta e mengata ea khase ha se tleleime ea kopo. Ke ketsahalo ea polokeho. Winch shaft e liehileng bakeng sa koloi ea boenjiniere ha se sekhechana sa kemiso. Ke thendara e fetiloeng. Ho khetha se nepahetseng Stellite 21 karolo fektheri ho bolela ho khetha balekane ba nkang metallurgy e le boenjiniere-e seng ho reka. Ke bo-mang ba utloisisang hore ho nepahala ha ho lekanngoe ka li-micron feela, empa ka ts'ebetso e phetoang ho pholletsa le likete tsa lipotoloho tsa khatello. Seo ha se tšepiso. Ke motheo.
