Njira zopewera kuwonongeka kwa chimbale cha brake ndi looseness: chitsulo chosungunula chimalowetsedwa mu sprue wogawana kuti achepetse kutenthedwa kwapaderalo kwa chimbale ndikuletsa mapangidwe amoto opangira.Malinga ndi lingaliro la kulimba koyenera kwazitsulo zachitsulo, tinthu tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'onoting'ono, timachulukirachulukira, ndikugogomezera kwambiri kuchepa.Njira yodyetsera ikhoza kukhala kudyetsa kwa gating kapena kudyetsa kowuma.Pamene njira yodyetsera ya gating imatengedwa, mutu wa sprue ukhoza kuwonjezeka moyenerera, monga kuwonjezera kutalika kwa bokosi lapamwamba, kuwonjezera mphete ya chipata, ndi zina zotero;Wothamanga pamtanda ndiye gawo lalikulu la skiming ndi mpweya woyandama.Ikagwiritsidwa ntchito powonjezera shrinkage, kukula kwake kwagawo kumatha kukulitsidwa moyenera;The sprue mkati adzakhala lalifupi, woonda ndi lalikulu.The sprue wamkati ndi waufupi (wodutsa sprue pafupi ndi kuponyera).Chifukwa cha kutentha kwa kutentha kwa kuponyera ndi sprue yopingasa ndi kutuluka kwa chitsulo chosungunula kudzaza ndi kudyetsa, sprue wamkati sichidzakhazikika ndi kutsekedwa pasadakhale, ndipo sichidzatsekedwa kwa nthawi yaitali.Woonda (kawirikawiri) angalepheretse mapangidwe olumikizana otentha olowa panjira ya mkati sprue.M'lifupi ndi kuonetsetsa okwanira kusefukira m'dera.Kamodzi kuponyera akulowa moyenera solidification siteji ya graphitization kutambasuka ndi contraction, chitsulo chosungunula mu ingate adzasiya kuyenda ndi kulimba ndi kuima pa nthawi kusintha mlingo wa magwiritsidwe ntchito graphitization kudzikonda kudya, umene ndi adaptive kusintha zotsatira za yochepa, woonda. ndi khosi lalitali (liser khosi) pakudyetsa.Kwa ma castes ena omwe ali ndi kuchepa kwakukulu, chokwera chikhoza kukhazikitsidwa kuti chidyetse.Chokweracho chimayikidwa bwino kumayambiriro kwa sprue wamkati, kapena chokwera chikhoza kukhazikitsidwa pakatikati kuti chidyetse chimbale kumbali imodzi ya mkati mwa sprue.Pazigawo zing'onozing'ono zokhala ndi mipanda yopyapyala, njira zachiwiri zowonongeka zimatha kutengedwa, ndiko kuti, inoculant ikhoza kuwonjezeredwa mu phukusi laling'ono kuti mulowetse nthawi yomweyo kuti apititse patsogolo mphamvu ya inoculation ndikulimbikitsa nucleation ndi kukula kwa graphite.Ikhoza kuwonjezeredwa pansi pa phukusi ndikutsukidwa muchitsulo chosungunuka.
