Pamene mainjiniya afotokoza Zithunzi za 20 pamipando ya ma valve ovala kwambiri, yotentha kwambiri, zopumira pampu, kapena mphete za turbine nozzle, sakusankha aloyi iliyonse yopangidwa ndi cobalt - akusankha zinthu zomwe zimafuna kulondola muzitsulo zonse ndi makina. Koma kufufuza kodalirika Stellite 20 fakitale mabwenzi amakhalabe vuto lokhazikika. Tawona mapulojekiti ambiri akuchedwa-osati chifukwa cha zolakwika zamapangidwe, koma chifukwa cha kutentha kosasinthasintha, katundu wosatsimikiziridwa, kapena kugwedezeka kwapang'onopang'ono pambuyo pa kupsinjika maganizo. M'ma hydraulic system omwe amagwira ntchito pa bar 700+, kupatuka kwa 0.015 mm pampando wa pulagi wa Stellite 20 kungayambitse kutayikira msanga. Gulu limodzi lokhala ndi tsankho lapadera la kaboni lasokoneza kupanga konse kwa ma OEM apompo akunyanja.
Chifukwa chiyani Stellite 20 Si "Superalloy Wina" chabe
Stellite 20 sinasindikizidwe kuchokera kuzinthu zamtundu wa cobalt-chrome. Kuchita kwake kumadalira kulamulira kolimba kwa mitundu inayi yodalirana: chromium (28-32%), tungsten (4-6%), carbon (0.2-0.4%), ndi carbide morphology. Potoloka kunja kwa mazenera amenewo, makamaka ngati maukonde a eutectic carbide apanga magulu olimba, olumikizana m'malo mwa tinthu tating'ono tating'ono tomwe timabalalika, mumalephera kukana kuphulika, kutulutsa pang'ono, komanso kutopa kwamafuta. Kusanthula kwenikweni kwapadziko lonse lapansi kukuwonetsa zolephera zambiri zomwe zimayambira chifukwa chimodzi: kusagwirizana kwazinthu, osati gawo la geometry. Ichi ndichifukwa chake ogwiritsa ntchito zapamwamba samafunsa "Kodi mutha kupanga makina a Stellite 20?" Amakufunsani "Kodi mumatsimikizira bwanji mawonekedwe amtundu uliwonse? Kodi ingot yanu yotsimikizika ya AMS 5387 imachokera kuti? Kodi mumasunga mbiri yonse yamankhwala ndi mbiri yamafuta pakayimidwe?"
Zomwe Zimalekanitsa Fakitale Yowona ya Stellite 20 Kuchokera kwa General Machinist
A zoona Stellite 20 fakitale ali ndi ndondomeko - osati kudula komaliza. Zimayamba ndi certified AMS 5387 kapena T800-grade billet, yotsimikiziridwa kudzera pa OES ndi PMI isanasungunuke. Kuponyera ndalama kuyenera kugwiritsa ntchito nkhungu za zipolopolo za ceramic zomwe zimatha kupirira ± 0.05 mm pazigawo zopyapyala - palibe njira zazifupi zoponyera mchenga. Chithandizo cha kutentha sichitha; njira yothetsera annealing pa 1175 ° C ± 10 ° C kutsatiridwa ndi kuziziritsa mpweya wolamulidwa ndikoyenera kusungunula ma carbides achiwiri popanda kuchulukitsa. Kenako pakubwera gawo lovuta: Machining. Kuuma kwa Stellite 20 (40-45 HRC as-cast) ndi chizolowezi cholimbikira ntchito chimafuna nsanja zolimba za 5-axis CNC zokhala ndi zoziziritsa kukhosi, zida za carbide zopangidwira ma aloyi a cobalt, komanso mitengo yazakudya yosinthidwa kuti zisamangidwe. Kusokonekera kumodzi - kuyika kosawoneka bwino, nthawi yokhalamo mopitilira muyeso - kumapanga ma microcracks omwe amakhala malo oyambira ndikukweza mozungulira.
- Kufufuza kwazinthu: Chigawo chilichonse cha Stellite 20 chimakhala ndi ID yapadera yolumikizidwa ndi chipika chake chosungunula, tchati chozungulira kutentha, ndi lipoti loyendera CMM.
- Kukhazikika kwa Dimensional: Kuchepetsa kupsinjika pambuyo pakukonza kumalepheretsa kuphulika mumipingo yopyapyala kapena mitsinje yayitali
- Surface integrity: Palibe mphesa zoyaka; Kumaliza konse kumagwiritsa ntchito njira zotentha zotsika ngati honing kapena electropolishing
- Kutsimikizira kogwira ntchito: Zigawo zovuta zimayesedwa kupsinjika, kuyang'ana mkati mwa utoto, ndikujambula mapu - osati kungoyang'ana
Mtengo Wonyengerera—Ndi Chifukwa Chake Siwofunika Kwambiri
Ogula ena amathamangitsa mawu otsika povomera zofananira za Stellite 20 kuchokera ku zinyalala zosatsimikizika kapena zopangidwa ndi zida zamagulu ambiri ogulitsa ntchito. Chotsatira? Kukwera mtengo wonse wa umwini. Tidatsata ma OEM atatu aku North America hydraulic omwe amasintha ogulitsa kuti apulumutse 12% pagawo lililonse. M'miyezi 18, awiri adanenanso kuti 23% ya kulephera kwakukulu m'munda m'nyumba za silinda pampu ya piston. Choyambitsa: kusagwirizana kwa carbide kunapangitsa kuti pakhale kufalikira kwamphamvu m'dera loyamwa. Kusintha mayunitsi olephera kumawononga 4.7 × mtengo wagawo loyambirira-kuphatikiza nthawi yopuma, ntchito, ndi zonena za chitsimikizo. Pakadali pano, makasitomala omwe adalumikizana ndi vertically Integrated Stellite 20 fakitale Opaleshoniyo adawona kuti nthawi yayitali pakati pa kulephera ikuwonjezeka ndi 310% pamagulu onse a pampu ndi ma valve.
Kuyang'ana M'tsogolo: Kumene Kulondola Kumakumana ndi Kuneneratu
Mzere wotsatira sikungopanga zida zolimba - ndikuyika kulosera mu gawo lililonse. Opanga otsogola a Stellite 20 tsopano akuphatikiza kufalikira kwamapasa a digito: kuyeserera kumatsimikizira kudzaza kwa nkhungu ndi kulimba musanayambe kutsanulira; mu-process matenthedwe kujambula amatsimikizira yunifolomu kutentha pa annealing; Kukonzekera kwa njira za CMM kothandizidwa ndi AI kumachepetsa nthawi yoyendera ndi 38% popanda kupereka nsembe. Pazinthu zofunikira kwambiri, izi zikutanthauza kuti palibe zodabwitsa pa FAT-kapena m'munda. Pamene zida zopangira mafuta zimakankhira ku moyo wautumiki wa maola 20,000 ndipo mapampu apansi pa nyanja amagwira ntchito pa 150 ° C mosalekeza, kudalirika sikungofuna. Zimapangidwa, kutsimikiziridwa, ndi kulembedwa - gawo ndi gawo, mochuluka ndi maere, chaka ndi chaka.
