Zigawo zazitsulo zotayidwa sizimangolimbana ndi malo olemera kwambiri a mafakitale-zimatanthawuza kudalirika pamene kulephera sikungatheke. Tawonapo ma valve opanikizika akusweka pansi pa njinga yamoto yotentha, nyumba zapampu za piston zikuwomba pambuyo pa miyezi 18 muntchito yamafuta akunyanja, ndipo zodzigudubuza za winch center shaft zimagwira zonyamula zofukula migodi. Kulephera kulikonse kumayambira pa chifukwa chimodzi: khalidwe lakuthupi losagwirizana ndi zochitika zenizeni zapadziko lapansi. Ichi ndichifukwa chake zida zachitsulo-makamaka zomwe zimapangidwira kuti zikhazikike pang'onopang'ono, kusasinthika kwa microstructural, ndi zitsulo zogwira ntchito-zimakhalabe zosasinthika m'makina a hydraulic, magalimoto ainjiniya, ndi ma pampu amphamvu kwambiri.
Chifukwa Chake Magawo a Cast Steel Amaposa Njira Zina mu Maudindo Ofunika Kwambiri
Chitsulo chonyengedwa chimapereka mphamvu, koma sichikhala ndi geometry yamkati yovuta. Zopangidwa ndi welded zimabweretsa madera okhudzidwa ndi kutentha omwe amasokoneza moyo wotopa. Mabotolo opangidwa ndi makina amawononga 60-75% ya zopangira-ndikulimbana ndi kusiyana kwa makulidwe a khoma komwe kumachitika m'matupi a valve kapena nyumba za silinda. Zigawo zazitsulo zotayira zimathetsa malire awa. Kuponyera mchenga kumapereka mawonekedwe apafupi ndi maukonde a zigawo zazikulu, zokhuthala ngati maziko a pampu; kuponya ndalama kumakwaniritsa kulolerana kwa ± 0.05 mm pamilomo yopyapyala yokhala ndi mipanda ya cobalt alloy. Mwachidziwitso, njira yolimbitsira imalola kuwongolera kapangidwe kambewu - makamaka kofunikira mu AMS 5387 cobalt alloy 6 pampu magawo pomwe kuziziritsa kolowera kumalepheretsa kusweka kwa intergranular panthawi yothamanga kwambiri.
Nthawi zambiri timayesa zida zachitsulo polimbana ndi magawo atatu ogwirira ntchito: Kutentha kwamphamvu kwamphamvu kuposa 400 ° C, kukokoloka kochepera 0.08 mm/chaka mu slurry abrasive,ndi moyo wotopa wopitilira 10⁷ kuzungulira pa 85% kumabweretsa kupsinjika. Osewera otenthedwa bwino a ASTM A216 WCB kapena ASTM A351 CF8M amakumana onse atatu. Njira zina zotsika mtengo zimalephera mosayembekezereka - osati poyambira, koma pakadutsa miyezi 14, ma microcracks amalowa m'malo ocheperako osawoneka ndi kuwunika kwa UT.
Mtengo Wobisika wa Kusankha Zinthu "Zabwino Zokwanira".
Ogula ena amatchula "zitsulo zotayidwa" popanda kufotokoza kalasi, chithandizo cha kutentha, kapena zofunikira za NDT. Tatumiza mayunitsi 220 a T800 cobalt-based center shaft roller ku European OEM-kungolandira chidziwitso chokumbukira milungu isanu ndi umodzi pambuyo pake. Choyambitsa? Wowagulitsa adalowetsa ASTM A487 Grade CA15 kwa T800 popanda chilolezo. Zonsezi ndi zitsulo zosapanga dzimbiri za martensitic-koma CA15 ili ndi 12% Cr motsutsana ndi T800's 27% Cr + 5% Mo. Chotsatira: chloride pitting m'madzi a m'nyanja oziziritsa ma gearbox a winch. Kuwonongeka koyambika pamakina osiyidwa ndi zida zocheperako, kumachulukitsidwa ndi kupsinjika kotsalira kochokera pakuwotcherera kosayenera pambuyo pa kuwotcherera.
Izi sizongoyerekeza. Ichi ndichifukwa chake timakakamiza macheke anayi omwe sangakambirane: malipoti otsimikizika a mphero pa kutentha kulikonse, kusanthula kwachindunji pamipiringidzo yomwe ikubwera, kulimbitsa kayeseleledwe pamaso nkhungu kapangidwe,ndi kuuma kwa gawo lonse pamapu omaliza. Palibe kupatula - ngakhale ma prototypes. Makasitomala omwe amadumpha izi amalipira 3.2 × zambiri pakulephera m'munda kuposa kutsimikizira zinthu zam'tsogolo.
Kuwongolera Kupanga Zomwe Zimayambira Pamaso Kutsanulira
Kuchita kwenikweni kumayambira poyambira - koma kumapitilira kupyolera mu makina, kutentha kutentha, ndi kumaliza. Timaphatikiza kuponya mchenga ndi makina asanu a CNC mumayendedwe amodzi: nyumba zoponyedwa zimapita molunjika kuchokera ku shakeout kupita ku ng'anjo yochepetsera nkhawa, kenako kupita ku mphero zopingasa zomwe zimakhala ndi ± 0.015 mm kulolerana pakubala. Izi zimachotsa zolakwika zokonzanso zomwe zimavutitsa ogulitsa pogwiritsa ntchito mavenda osiyana ndi makina opanga. Pazigawo za AMS 5387, timapanga njira yothetsera 1150 ° C ndikutsatiridwa ndi kuzimitsa mwachangu-kenako zaka 800 ° C kwa maola 16. Gawo lililonse limalowetsedwa, kutsatiridwa ku ID ya batch ndi njira ya thermocouple.
Malo athu ogwirizana ndi ISO amayendetsa kuyendera kwa CMM pa 100% ya zinthu zofunika kwambiri: kukhazikika kwa mipando pamavavu okakamiza, ma cylindricity pamapampu a piston, ndi kumaliza pamwamba panjira zolumikizirana zodzigudubuza (Ra ≤ 0.4 µm). Timakana zojambula zomwe zikuwonetsa> 0.15% ya kugawikana kwa carbide m'masikidwe a microstructure-ngakhale atadutsa macheke ang'onoang'ono. Chifukwa kukhulupirika sikuyezedwa mu ma microns okha. Zili mu kugawa kwa chromium kudutsa malire aliwonse ambewu.
Kusankha Zida Zachitsulo Zomwe Zimapereka-Osati Kungolengeza-Kugwira Ntchito
Funsani mafunso awa musanamalize wogulitsa aliyense: Kodi chiphaso chawo chazinthu chimaphatikiza ma chemical *ndi* makina amako pa kutentha? Kodi amayesa akupanga pa 100% ya nyumba zopanikizika kwambiri - kapena maere okha? Kodi angapereke malipoti a microstructure owonetsa dendrite mkono wotalikirana ndi kuphatikizika kwa ASTM E45? Ngati yankho liri "ayi" kwa aliyense, mukugula zowerengera-osati inshuwaransi.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. amamanga zida zachitsulo kwa mainjiniya omwe asintha ma valve omwewo katatu. Cholinga chathu chimakhalabe chocheperako: makina owongolera ma hydraulic, zida zoyendetsera mafuta ndi gasi, zida za injiniya wamagalimoto, ndi zida zapadera zamapampu zomwe zimafunikira ma aloyi a faifi tambala a cobalt, zida zamtundu wa T800, kapena zopangira zitsulo zosapanga dzimbiri. Sitithamangitsa volume. Timakonzanso kubwereza—kudutsa mayunitsi 500, pazaka 12 zautumiki, kudutsa -40°C kutumizidwa ku Arctic ndi 500°C kuchulukitsa kwa makina oyezera.
Zigawo zachitsulo zotayira zimapambana pamene zitsulo zimakumana ndi ntchito. Osati pamene zolemba zimawoneka bwino pamapepala-koma pamene gawolo likugwira ntchito pa bar 350 pamene likuzungulira 1,800 rpm, chaka ndi chaka. Ndiwo muyezo womwe timapangira, kupanga, makina, ndi kutsimikizira - nthawi iliyonse.
