Engineering Machinery Industry
Mlandu Wamakasitomala: Wopanga Msonkhano wa Excavator ku United States
Mbiri ya Makasitomala: Makina opanga zida zauinjiniya omwe amavala zida ku Illinois, USA, omwe amapereka zopangira mano a ndowa ku Sany,CAT ndi Komatsu, akuyenera kusintha chitsulo chopindika kwambiri cha manganese (Mn13)l chomwe chili choyenera kukumba matani 20-30 kuti athe kuthana ndi vuto la migodi.
Zovuta Zazikulu: Chitsulo chachikulu cha manganese chiyenera kukhala chopanda maginito, kulimba kwamphamvu ≥15J/cm², kuuma HB200-250, ndi moyo wovala ziyenera kukhala 30% kuposa opikisana nawo; kusiyana koyenera pakati pa dzino la ndowa ndi mpando wa dzino ≤0.1mm kupewa kugwa pakugwira ntchito; kasitomala amafuna gulu laling'ono (500 zidutswa) oda yoyeserera, kuperekedwa mkati 2 milungu, ndi dongosolo misa (2,000 zidutswa pamwezi) pambuyo qualification.
Ruican Solution: 1. Kukhathamiritsa kwa Zinthu: Kudzipangira nokha chitsulo cha manganese, kuwonjezera zinthu za microalloying kuti ziyeretse mbewu, kutentha kwa austenitizing 1050 ℃, kugwira nthawi maola 2.5 kuonetsetsa kuti palibe mpweya wa carbide. 2. Kuwongolera Njira: Kuyika ndalama → chithandizo chothandizira → CNC Machining → kuuma ndi kuyesa kulimba kwamphamvu → kuyesa kwa msonkhano. 3. Kutumiza Mwachangu: Yambitsani mzere wopangira malonda akunja, zonyamula ndege kuchokera ku Ningbo Port kupita ku Chicago, mothandizidwa ndi dongosolo lowonjezeranso zonyamula panyanja.
Zotsatira Zakuchuluka: Kuyesedwa kwa moyo woyeserera kumafika maola 4,500, 35% kuposa omwe adapereka choyambirira kwa kasitomala, ndipo chiwongola dzanja chapakati ndi 100%; pambuyo popereka misa, kuchuluka kwa zida zamakasitomala kutsekeka ndikusinthidwa kumachepetsedwa ndi 30%, ndipo magwiridwe antchito a mwezi ndi mwezi akuwonjezeka ndi 20%; m'chaka chachiwiri cha mgwirizano, voliyumu yoyitanitsa idakwera kawiri mpaka zidutswa 4,000 pamwezi, zomwe zidakhala gawo lalikulu padziko lonse lapansi.
Mgwirizano Wamtengo Wapatali: Gwirani msika wovala zapamwamba kwambiri wamakina aukadaulo aku North America okhala ndi mawonekedwe apamwamba osamva komanso kuyankha mwachangu.
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