Njira Zitatu Zazikulu Zakuponya

Njira zosiyanasiyana zoponyera zidapangidwa pakapita nthawi ndi oyambitsa ndi ofufuza, iliyonse ili ndi mawonekedwe ake komanso momwe amagwiritsidwira ntchito.zitsulo castingskukwaniritsa zofunikira zauinjiniya ndi ntchito. Nthawi zambiri, malinga ngati zisankho zitha kugwiritsidwanso ntchito kapena ayi, njira zoponyera zitha kugawidwa mu Expendable Mold Casting, Permanent Mould Casting ndi Composite Mold Casting. Kuponyedwa kwa nkhungu komwe kumatha kugawanikansokuponya mchenga, kupanga nkhungu ya zipolopolo,kuponya ndalamandi kutaya thovu kuponya, pamene nkhungu okhazikika kuponyera makamaka chimakwirira mphamvu yokoka kufa kuponyera, otsika kuthamanga kufa kuponyera ndi kuthamanga kwambiri kufa kuponyera.

1. Kugwiritsa Ntchito Mold Kutaya
Zomwe zimagwiritsidwa ntchito nthawi zambiri zimapangidwa ndi mchenga, pulasitala, zitsulo zadothi, ndi zina zotero. Nthawi zambiri amasakanizidwa ndi zomangira zosiyanasiyana, kapena ma bonding agents. Mchenga wamba umakhala ndi 90% mchenga, 7% dongo, ndi 3% madzi. Zida zimenezi ndi refractory (kupirira kutentha kwa chitsulo chosungunuka). Kuponyedwa kukakhala kolimba, nkhungu yomwe ingagwiritsidwe ntchito m'njirazi imathyoledwa kuti ichotse zitsulo zomaliza.

2. Kuponya Mould Kwamuyaya
Zoumba zokhazikika zimapangidwa makamaka ndi zitsulo zomwe zimakhalabe mphamvu pa kutentha kwakukulu. Amagwiritsidwa ntchito mobwerezabwereza. Zapangidwa kuti zitsulo zachitsulo zichotsedwe mosavuta ndipo nkhungu ingagwiritsidwe ntchito kachiwiri. Kuponyedwa kokhazikika kwa nkhungu kumagwiritsa ntchito chowongolera kutentha kuposa zisankho zosasinthika zosasinthika; Chifukwa chake, kuponyera kolimba kumayendetsedwa ndi kuzizira kwakukulu, komwe kumakhudza microstructure ndi kukula kwa mbewu.

3. Kuponyera Nkhungu Yophatikiza
Zomwe zimapangidwira zimapangidwa ndi zinthu ziwiri kapena zingapo (monga mchenga, graphite, ndi zitsulo) kuphatikiza ubwino wa chinthu chilichonse. Zoumba zophatikizika zimakhala ndi gawo lokhazikika komanso lokhazikika ndipo zimagwiritsidwa ntchito m'njira zosiyanasiyana zoponyera kuti zithandizire kulimba kwa nkhungu, kuwongolera kuzizira, komanso kukhathamiritsa chuma chonse pakuponya.