Ma aloyi a Cobalt samapindika kufuna-amatanthauzira. Pamene mapampu a hydraulic amathamanga pa bar 400, pamene ma valve otsika akuyang'anizana ndi 250 ° C ndi H₂S, kapena pamene ma winch shaft amatenga katundu wobwerezabwereza m'magalimoto a Arctic-grade engineering, kutopa kwazitsulo. Zolephera sizichitika pang'onopang'ono; iwo ndi adzidzidzi, okwera mtengo, ndi ofunikira ntchito. Tawonapo nyumba zitatu za AMS 5387 cobalt alloy pump zikusweka mkati mwa maola 800 ogwirira ntchito-osati kuchokera ku zolakwika zamapangidwe, koma chifukwa cha kutentha kosasinthasintha mu batch yoponya. Ichi ndichifukwa chake "gawo 6 la cobalt alloy" silimangofufuza. Ndizomwe akatswiri opanga ma shorthand amagwiritsa ntchito ngati kukhazikika kwa mawonekedwe, mawonekedwe a microstructural, komanso kukana kuvala sikungasokonezedwe.
Chifukwa Chake Zisanu ndi chimodzi—Osati Mmodzi, Osati Khumi—Zigawo za Cobalt Alloy Zimapereka Kudalirika Kwapadziko Lonse
Gulu lathu lapanga makina, kuyesa, ndikutsimikizira magawo opitilira 17,000 a cobalt-nickel kuyambira 2018-makamaka AMS 5387 ndi T800 giredi-kwa makasitomala omwe ali pantchito zamafuta, ma hydraulics apanyanja, ndi zida zoyeserera kwambiri. Sitinafike pamasinthidwe asanu ndi limodzi mwangozi. Iliyonse imathetsa zovuta zina zomwe tidaziwona pazambiri za malipoti azautumiki, kusanthula kwazomwe zidayambitsa, ndi maphunziro azovuta. Awa si mayankho amalingaliro. Amawumitsidwa ndi kukwera njinga, kuyesa kugwedezeka kwa kutentha, komanso kuwonekera kwenikweni kwa dzimbiri padziko lonse lapansi m'malo a mpweya wowawasa.
- Cobalt alloy nozzles - Zapangidwira jakisoni wa abrasive slurry mu ma fracturing manifolds. Mitundu yokhazikika yosapanga dzimbiri idasokoneza 3.2 × mwachangu pamayeso a abrasion labu (ASTM G65). Ma nozzles athu a T800 adasunga ± 0.015 mm orifice kulolerana pambuyo pa 12,000 kuzungulira pa 15 m / s kuthamanga kwa liwiro.
- Mapulagi a Cobalt alloy - Amagwiritsidwa ntchito ngati zoyika zakhungu m'magawo owongolera a subsea. Inconel 718 idasinthidwa pomwe makasitomala adanenanso kuti akukwiya panthawi ya -1 ° C kutentha kwamadzi am'nyanja. Kugunda kwapang'onopang'ono kwa Cobalt kunachepetsa kuyika kwa torque ndi 41% popanda kusiya kusindikiza kukhulupirika.
- AMS 5387 cobalt aloyi 6 magawo a mpope - Yankho lolingana ndi dongosolo: cylinder block, valve plate, slipper, swashplate bushing, port plate, ndi retainer ring-zonsezi zimachokera ku kutentha kumodzi kovomerezeka. Amathetsa kusiyana kwa kutentha kwapakati pakati pa malo okwerera. Deta yam'munda ikuwonetsa 2.8 × nthawi yotalikirapo pakati pa kukonzanso motsutsana ndi misonkhano yosakanikirana.
- Nyumba zokhala ndi ma silinda a piston - Osati zojambula zokhala ndi mipanda. Izi zimaphatikiza mayendedwe ozizirira opangidwa ndi makina olondola komanso ma flanges ochepetsa kupsinjika. Timagwirizira kulekerera kwa GD&T molimba kwambiri kuposa ISO 2768-mK pa bore concentricity (≤0.008 mm kupitirira 320 mm kutalika) chifukwa kusalumikizana bwino kumapangitsa kuvala kwa nsapato za piston.
- Ma valve opanikizika okhala ndi mipando yophatikizika ya cobalt - Kulimba kwa mipando ≥45 HRC, kuuma kwa pamwamba pa Ra ≤0.4 µm, ndi zero porosity zimatsimikiziridwa kudzera pa micro-CT scanning. Imakana 98.3% ya mabilu aiwisi omwe akubwera omwe amalephera kuyang'anira akupanga-palibe mwayi wachiwiri mukasindikiza haidrojeni pa bar 700.
- Odzigudubuza pa winch center shaft rollers - Carburized T800 yokhala ndi kuya kwa 1.2-1.5 mm, kulimba kwapakati> 85 J pa -40 ° C. Imapulumuka kusinthika kwa katundu 15,000+ pakuyesa kofulumira kwa kupopera mchere komwe 42CrMo4 idalephera kuzungulira 3,200.
Kusasinthika Kwazinthu Sizokambitsirana-Umu ndi Momwe Timatsimikizira
Otsatsa ena amawona aloyi ya cobalt ngati "chitsulo china chachilendo." Timachitenga ngati dongosolo lazitsulo. AMS 5387 sichimatanthauzidwa ndi chemistry yokha-imafuna kuwongolera kolimba pakugawa kukula kwa tirigu, carbide morphology, ndi kupsinjika kotsalira pambuyo pokonza makina. Timangochokera ku mphero zokhala ndi traceability yokwanira ya ladle ndipo timafuna malipoti oyesa mphero pazotumiza zilizonse. Kutentha kulikonse kumatsimikiziridwa ndi spectrographic, kuyezetsa kolimba pa ASTM E8, ndikuwunika kwazitsulo kusanayambe. Ngati gulu la carbide likupitilira gawo la 5% mu as-cast microstructure, timataya gawo lonse - ngakhale chemistry ikadutsa. Chifukwa kusweka kwa ntchito kumayambira pamenepo, osati pamsonkhano womaliza.
Kucheka Sikungodula—Kumalamulira Kutentha ndi Kugwedezeka
Cobalt alloys amachotsa pa 1/5 mlingo wa 316 zitsulo zosapanga dzimbiri. Koma vuto lenileni si liwiro-ndikuwongolera kutentha. Pa 300 ° C, mphamvu zokolola za cobalt zimatsika 12% yokha. Izi zikutanthauza kuti zida zodulira sizikhala zodzaza nthawi yayitali, kutulutsa kutentha kwambiri, komwe kumachepetsa chogwirira ntchito kwanuko ndikufulumizitsa kuvala kwa zida. Timagwiritsa ntchito kuziziritsa kwa nayitrogeni wa cryogenic - osati nkhungu - pomaliza kutembenuza mipando. Moyo wa zida umayenda bwino 3.7 ×. Kukhulupirika kwapamtunda kumayenda bwino: palibe mapangidwe oyera, palibe ma microcracks omwe amapezeka kudzera pa FIB-SEM. Malo aliwonse ovuta amapeza kutsimikizika kwa CMM * asanakhale * ndi * pambuyo * chithandizo cha kutentha, chifukwa kupotoza sikudziwikiratu-ndiko kuyezedwa. Ndipo timazilemba.
Gawo Lanu Lotsatira la 6 Cobalt Alloy Limayamba Ndi Ndemanga Yojambula-Osati Mawu
Sitimapereka ma RFQ pazinthu za cobalt. Timayamba ndi kutanthauzira kwa GD&T. Timayika chizindikiro chowonjezera nkhawa pakusintha kwa fillet. Timapereka malingaliro ang'onoang'ono a geometry tweaks-monga kusintha malo a chamfer ndi 0.3 mm-omwe amachepetsa nthawi ya makina ndi 22% popanda kusokoneza ntchito. Timatsimikizira mayendedwe azinthu popanga ndalama pogwiritsa ntchito fanizo lolimba, osati kungoyerekeza. Izi si zachilendo. Ndi kupewa ngozi. Makasitomala omwe adumpha gawo ili avareji 3.4 mainjiniya oda kusintha projekiti iliyonse. Iwo omwe amachita nawo gawo loyambirira la sitima m'masiku 14, osati 38.
Ngati mukufotokozera gawo la 6 cobalt alloy - kapena kuyesa imodzi - mukukonza za moyo wautali monyanyira. Osati yabwino. Osati mtengo wokha. Osati nthawi yotsogolera nokha. Mufunika kukhulupirika kwapang'onopang'ono pa kutentha, kukana kwa dzimbiri muzofalitsa zaukali, komanso kusadziwikiratu kwadongosolo pakadutsa masauzande ambiri. Ndiko komwe zochitika zimakumana ndi kuphedwa. Ichi ndichifukwa chake mainjiniya amatchula cobalt-ndi chifukwa chake amakhulupilira zomwe zimachitika pambuyo pake.
