Kodi njira zoponyera za manja amkuwa opanda lead ndi ziti?

Kuponya mchenga ndi njira yodziwika kwambirimkuwama gaskets omwe amagwiritsidwa ntchito popanga mchenga, omwe ali ndi ubwino wosinthasintha komanso kukonzekera kosavuta.Komabe, kulondola kwazithunzi, mawonekedwe a pamwamba, ndi khalidwe lamkati la castings opangidwa ndi njira iyi silikukwaniritsa zofunikira zamakina, ndipo kupanga ndizovuta kwambiri, ndipo kukwaniritsidwa kwa makina ndi makina opangira makina kumafuna ndalama zambiri.Popanga zigawo zina zapadera ndi zofunikira zapadera zaumisiri Zizindikiro zaumisiri ndi zachuma ndizochepa, kotero kugwiritsa ntchito mchenga wa mchenga pakupanga Foundry kumakhala kochepa kwambiri.Kuphatikiza pa kuponyedwa kwa mchenga, kuponyedwa kwapadera kwapanga njira zosiyanasiyana zoponyera zosiyana ndi kuponyedwa kwa mchenga posintha zinthu zoponyera, kutsanulira njira, mawonekedwe a alloy amadzimadzi odzaza nkhungu yoponyera, kapena mikhalidwe yolimba ya kuponyera.Ogwira ntchito a Foundry amatchula njira zina zoponyera zomwe zimakhala zosiyana ndi njira yopangira mchenga monga kuponyera kwapadera.Njira zodziwika bwino zoponyera makina pamakampani opanga makina ndi:
1. Kutulutsa ndalama.Ndi njira yoponyera zosadulidwa kapena zosadulidwa zokhala ndi mawonekedwe olondola kwambiri komanso kutsika kwamphamvu kwapamtunda pogwiritsa ntchito zitsanzo za fusible ndi zipolopolo zogwira ntchito kwambiri;chitsulo nkhungu kuponyera.Ndi njira yogwiritsira ntchito nkhungu yachitsulo kuti iwonjezere kuzizira kwa kuponyera, kukwaniritsa mtundu umodzi wamitundu yambiri, ndi kupeza kuponyedwa ndi mawonekedwe a crystalline wandiweyani.
2. Kutulutsa mphamvu.Ndi njira yopezera ma castings olondola posintha kudzazidwa ndi crystallization ndi solidification mikhalidwe ya aloyi amadzimadzi, kuti ma aloyi amadzimadzi amaze thabwalo mothamanga kwambiri komanso kuthamanga kwambiri, ndikupanga ndi crystallize pansi pa zipsinjo zazikulu, potero amapeza kuponyedwa mwatsatanetsatane;kutaya thovu.Ndi thovu pulasitiki chitsanzo ofanana kukula ndi mawonekedwe kwa kuponyera, womangidwa ndi kuphatikiza mu banja chitsanzo, brushed ndi ❖ kuyanika refractory ndi zouma, kukwiriridwa mu mchenga khwatsi kwa kugwedera chitsanzo, ndiyeno anatsanulira ndi madzi zitsulo pansi pa zinthu zina kupanga chitsanzo Njira vaporizing ndi kupanga chitsulo chosungunula atengere malo a chitsanzo, kuponyedwa kuziziritsa ndi kupanga molimba zitsulo.
3. Kuthamanga kwapansi kochepa.Ndi njira yoponyera pakati pa mphamvu yokoka yoponyera mkuwa wopanda mtovu, womwe umatanthawuza njira yobaya chitsulo chosungunuka mu nkhungu pansi pa mphamvu yokoka ya dziko lapansi, ndi kuponyera mphamvu.Posintha mikhalidwe yodzaza ndi yolimba, aloyi yamadzimadzi imadzazidwa pang'onopang'ono kuchokera pansi mpaka pamwamba pansi pa kutsika kwapansi ndi kuthamanga kwapansi, ndi crystallized ndi solidified sequentially kuchokera pamwamba mpaka pansi pansi pa mphamvu yotsika, kuti apeze zoponyedwa zapamwamba ndi mawonekedwe wandiweyani.