M'zaka zaposachedwapa, kuponya mchenga kwagwiritsidwa ntchito kwambiri pamakampani opanga zinthu

Kuponya mchengandi njira yomwe imagwiritsidwa ntchito kwambiri pakuponya, yomwe imatha kugawidwa kukhala mchenga wadongo, kuponya mchenga wofiyira, ndikuponya mchenga. Chikombole chamchenga chomwe chimagwiritsidwa ntchito nthawi zambiri chimapangidwa ndi nkhungu yakunja yamchenga ndi pachimake (nkhungu). Chifukwa chotsika mtengo komanso kupezeka kosavuta kwa zida zomangira zomwe zimagwiritsidwa ntchito mukuponya mchenga, komanso luso lawo logwiritsidwanso ntchito kangapo, kukonza kosavuta, komanso kufulumira kwachangu popanga mchenga, akhala akugwiritsidwa ntchito kale popanga zitsulo, chitsulo, ndi aluminiyamu, zomwe zimapangitsa kuti zikhale zoyenera pamagulu onse ndi kupanga kwakukulu.

Malinga ndi kafukufukuyu, pakali pano m'makampani opanga zida zapadziko lonse lapansi, 65-75% ya ma castings amapangidwa ndikuponyedwa pogwiritsa ntchito nkhungu zamchenga, ndipo kupanga dongo kumapanga pafupifupi 70% ya izi. Chifukwa chachikulu ndi chakuti kuponya mchenga kumakhala ndi ndalama zotsika mtengo, njira zosavuta zopangira, njira zazifupi zopangira zinthu poyerekeza ndi njira zina zoponyera, komanso palinso akatswiri ambiri omwe amagwira ntchito yoponya mchenga. Choncho mbali zambiri galimoto, mbali makina, hardware mbali, mbali njanji, etc. amapangidwa ntchito dongo mchenga chonyowa akamaumba luso. Pamene nkhungu yonyowayo siyingakwaniritse zofunikira, ganizirani kugwiritsa ntchito mchenga wa dongo wouma kapena mitundu ina ya mchenga. Kulemera kwa castings opangidwa ndi dongo wobiriwira mchenga kuponyera akhoza kuyambira kilogalamu angapo ma kilogalamu makumi, kuponyera ena ang'onoang'ono ndi sing'anga-kakulidwe castings, pamene castings opangidwa ndi dongo youma mchenga kuponyera akhoza kulemera matani makumi. Njira zosiyanasiyana zoponyera mchenga zili ndi zabwino zapadera, kotero kuponyera mchenga ndi njira yopangira mabizinesi ambiri oponya. M'zaka zaposachedwa, ena opanga mchenga ku China aphatikiza makina opangira mchenga, zida zomangira mchenga, ndizida zoponya zokhakuti tikwaniritse kupanga koyenera, kotsika mtengo, komanso kwakukulu kokhazikika ndikuponya ma castings osiyanasiyana. Juneng Machinery nawonso nthawi zonse akuyandikira standardization mayiko.