NTCHITO YOPOSA INTANETI (KUTAYA WAX CASTING).
Njira yopangira ndalama ndi njira yotsika mtengo yopangira zida zachitsulo zolongosoka bwino kwambiri komanso kutsirizitsa pamwamba, kuchepetsa kapena kuchotseratu ntchito zowonjezera.Ndi imodzi mwa njira zakale kwambiri zodziwika bwino za maziko.Umboni wofukulidwa m'mabwinja m'madera osiyanasiyana a dziko lapansi umasonyeza kuti ndondomeko yopangira ndalama inayamba mu Bronze Age, pafupifupi zaka 4,000 BC.Ndi ndondomeko ya mafakitale yokhala ndi machitidwe owongolera komanso okhwima pa magawo asanu ndi atatu otsatirawa opanga.
Gawo loyambali ndi kupanga njira yotayirapo kutentha yomwe imapangidwa ndi jekeseni wa sera mu nkhungu (metal die.)
Mapangidwe a sera nthawi zambiri amakhala ndi mawonekedwe ofanana a geometrical monga momwe amafunira mbali yomaliza.Njira yobaya phula imapanga tinthu tating'ono ting'onoting'ono ndipo m'pofunika kuchotsa mosamala.Ngakhale tinthu ting’onoting’ono tosaoneka bwino tomwe sitili m’gawo lomaliza timachotsedwa m’njira imeneyi.
Pambuyo pa deburring, ndondomeko sera ndi, kudzera matenthedwe ndondomeko, anasonkhana pa wothamanga (alsowax-jekeseni anapanga) kuti apange kuponya mtengo.
Zotsatizana zigawo zapadera slurry ceramic refractory zipangizo ntchito pa mtengo ndi okhwima kulamulira kutentha ndi chinyezi.
Chisanjiro cha ceramic chikakonzeka ndikuwuma, mtengo wonsewo umayikidwa mu autoclave system kuti muchotse sera ambiri pogwiritsa ntchito mphamvu ya nthunzi kuti isangokhala nkhungu za zigoba za ceramic.Malo onse odzazidwa ndi sera, tsopano alibe kanthu
Kuti akwaniritse mphamvu zamakina apamwamba komanso kukana kugwedezeka kwamafuta, chipolopolocho chimaumba mitengo yopanda kanthu imayikidwa mu ng'anjo yotentha kwambiri pafupifupi 1,100 C. (2,000 F).
Pambuyo calcination ndondomeko, ndi zisamere pachakudya zipolopolo zadothi amaumba mosamala wodzazidwa ndi madzi zitsulo, amene ndi mphamvu yokoka umayenda mu nkhungu zonse mkati, kupanga workpieces akhakula, onse Ufumuyo sprue.
The akhakula workpieces ndiye anadulidwa ku tresses, kulandira kutsirizitsa enieni (kupera, kuwongola, kutentha mankhwala, Machining, chosema, etc.), ndipo, pambuyo pake, kupita okhwima omaliza khalidwe anayendera pamaso kulongedza katundu ndi kutumiza kwa costumer.
