1- Kodi Kuponya Mchenga Ndi Chiyani?
Mchenga nkhungu kuponyerandi njira yachikale komanso yamakono. Amagwiritsa ntchito mchenga wobiriwira (mchenga wonyowa) kapena mchenga wouma kupanga makina owumba. Kuponya mchenga wobiriwira ndi njira yakale kwambiri yoponyera yomwe imagwiritsidwa ntchito m'mbiri. Popanga nkhungu, mawonekedwe opangidwa ndi matabwa, zitsulo kapena pulasitiki ayenera kupangidwa kuti apange dzenje. Chitsulo chosungunulacho chimathira mubowo kuti chipangezoponyapambuyo pozizira ndi kulimbitsa. Kuponya mchenga ndikotsika mtengo kuposanjira zina zoponyazonse za chitukuko cha nkhungu ndi gawo loponyera ma unit.
Mchenga kuponyera, nthawizonse zikutanthauza wobiriwira mchenga kuponyera (ngati palibe kufotokoza wapadera). Komabe, masiku ano, njira zina zoponyamo zimagwiritsanso ntchito mchenga kupanga nkhungu. Ali ndi mayina awoawo, mongakuponya zipolopolo, utomoni wa furan wokutira mchenga (palibe mtundu wophika),kutaya thovundi kuponya vacuum.
2 - Kodi Kuponyera Mchenga Kumapangidwa Bwanji?
Tili ndi mitundu yosiyanasiyana yoponya yomwe mungasankhe. Chimodzi mwazinthu zomwe mungasankhire pulojekiti yanu idzakhala kusankha njira yoponya yomwe ingakwaniritse zosowa zanu. Maonekedwe otchuka kwambiri ndi kuponya mchenga komwe kumaphatikizapo kupanga chithunzi cha chidutswa chomalizidwa (kapena chojambula) chomwe chimaponderezedwa ndi mchenga ndi zowonjezera zowonjezera kuti zipange zitsulo zomaliza. Chitsanzocho chimachotsedwa pambuyo pa nkhungu kapena zojambulajambula, ndipo zitsulo zimayambitsidwa kudzera mu dongosolo lothamanga kuti mudzaze patsekeke. Mchenga ndi zitsulo zimalekanitsidwa ndipo zoyikapo zimatsukidwa ndikumalizidwa kuti zitumizidwe kwa makasitomala.
3 - Kodi Kuponya Mchenga Kumagwiritsidwa Ntchito Bwanji?
Mchenga nkhungu castingsamagwiritsidwa ntchito kwambiri mu amafakitale osiyanasiyanandi zida zamakina, makamaka zopangira zazikulu koma zokhala ndi zochulukirapo zochepa. Chifukwa cha mtengo wotsika wa chitukuko cha zida ndi chitsanzo, mukhoza kuyika mtengo wokwanira mu nkhungu. Nthawi zambiri, kuponyera mchenga ndi chisankho choyamba pamakina olemera monga magalimoto olemera, magalimoto onyamula njanji, makina omanga, ma valve, mapampu ndimachitidwe a hydraulic. Makamaka, aductile iron mchenga castingsamagwiritsidwa ntchito mochulukira m'mafakitale amakono.
4 - Ubwino Woponya Mchenga Ndi Chiyani?
✔ Mtengo Wotsika chifukwa cha nkhungu zake zotsika mtengo komanso zobwezerezedwanso komanso zida zosavuta zopangira.
✔ Kulemera kwa ma unit osiyanasiyana kuchokera ku 0,10 kg mpaka 500 kgs kapena kupitilira apo.
✔ Mapangidwe Osiyanasiyana kuchokera ku mtundu wosavuta kupita ku mtundu wovuta.
✔ Zoyenera kupanga zamitundu yosiyanasiyana.
5 - Ndi Zitsulo & Zosakaniza Ziti Zomwe Mumaponya Mchenga Wanu Amaponya Kwambiri?
Nthawi zambiri zitsulo zambiri zachitsulo ndi zopanda ferrous zimatha kuponyedwa ndi mchenga. Kwa zinthu zachitsulo,chitsulo chotuwa, ductile cast iron, carbon steel,aloyi chitsulo, chida chitsulo pamodzi ndizitsulo zosapanga dzimbiriamatsanuliridwa kwambiri. Kwa ntchito zopanda ferrous, Aluminiyamu ambiri, Magnesium,Ma aloyi opangidwa ndi mkuwandi zipangizo zina nonferrous akhoza kuponyedwa, pameneAluminium ndi aloyi akendi ambiri opangidwa kudzera mchenga kuponyera.
6 - Ndi Kulekerera Kotani Komwe Kuponyera Mchenga Wanu Kungakwaniritse?
Zololera zoponya zimagawidwa mu Dimensional Casting Tolerances (DCT) ndi Geometrical Casting Tolerances (GCT). Woyambitsa wathu akufuna kulankhula nanu ngati muli ndi pempho lapadera pazoyenera kulekerera. M'munsimu muli kalasi yolekerera zomwe titha kufikira ndi athukuponya mchenga wobiriwira, kuponyera nkhungu ya chipolopolo ndikuponya mchenga wa furan resin osaphika:
✔ Gulu la DCT ndi Green Sand Casting: CTG10 ~ CTG13
✔ DCT Kalasi ndi Shell Mold Casting kapena Furan Resin Sand Casting: CTG8 ~ CTG12
✔ Gulu la GCT ndi Green Sand Casting: CTG6 ~ CTG8
✔ Gulu la GCT lopangidwa ndi Shell Mold Casting kapena Furan Resin Sand Casting: CTG4 ~ CTG7
7 - Kodi Nkhungu Zamchenga Ndi Chiyani?
Mchenga wa nkhungu umatanthawuza machitidwe opangira opangidwa ndi mchenga wobiriwira kapena mchenga wouma. Makina owumbira mchenga makamaka amaphimba bokosi la mchenga, spures, ingate, zokwera, mchenga, mchenga wa nkhungu, zomangira (ngati zilipo), zomangira ndi zigawo zina zonse zomwe zingatheke.