Matanho ekudzivirira brake disc shrinkage uye looseness: simbi yakanyungudutswa inounzwa musprue zvakaenzana kuti kuderedze kupisa kwenzvimbo ye disc uye kudzivirira kuumbwa kwezvakagadzirwa zvinopisa nzvimbo. Zvinoenderana nemaonero ekuenzanisa kusimba kwesimbi castings, iyo yakawanda yakatetepa-yakakomberedzwa mativi madiki, iyo yakakura kukosha kwekushomeka, uye zvakanyanya kusimbisa pakuderera. Feeding mode inogona kunge iri gating system yekudyisa kana riser feed. Kana chirongwa chekudyisa chegating system chinogamuchirwa, musoro wesprue unogona kuwedzerwa zvakakodzera, sekuwedzera kureba kwebhokisi repamusoro, kuwedzera mhete yegedhi, nezvimwe; Muchinjikwa mumhanyi ndicho chikamu chikuru chekusvetuka uye mhepo inoyangarara. Kana ichishandiswa shrinkage kuwedzera, chikamu chayo saizi inogona kuwedzerwa zvakakodzera; Iyo sprue yemukati ichave ipfupi, yakatetepa uye yakafara. Iyo yemukati sprue ipfupi (the transverse sprue iri pedyo nekukanda). Nekuda kwesimba rinopisa rekukanda uye sprue yakachinjika uye kuyerera kwesimbi yakanyungudutswa yekuzadza nekudyisa, iyo yemukati sprue haizoome uye yakavharwa pamberi, uye icharamba isina kuvharwa kwenguva yakareba. Yakaonda (kazhinji) inogona kudzivirira kuumbwa kwekubatana kunopisa majoini pane inopinza yemukati sprue. Iyo hupamhi ndeyekuvimbisa nzvimbo yakakwana yekufashukira. Kana iyo yekukanda yapinda pachiyero chekusimbisa nhanho yekuwedzera uye kuputika, iyo simbi yakanyunguduka mu ingate inomira kuyerera uye ichasimba uye kumira nenguva kuvandudza mwero wekushandiswa kwe graphitization self feeding, inova inogadzirisa inogadzirisa mhedzisiro yepfupi, mutete. uye yakafara ingate (riser neck) pakudyisa. Kune mamwe makanda ane shrinkage yakakomba, riser inogona kusetwa yekudyisa. Inosimuka inonyatso kugadzirirwa pakutanga kwemukati sprue, kana riser inogona kuiswa pakati pepakati kuti idye disc kune rimwe divi remukati sprue. Kune zvikamu zviduku zvakatetepa-masvingo, zviyero zvechipiri zvekudzivirira zvinogona kutorwa, kureva, inoculant inogona kuwedzerwa mubhokisi duku rekugadzirisa pakarepo kuvandudza inoculation effect uye kukurudzira nucleation uye kukura kwegraphite. Inogona kuwedzerwa pasi pepakiti uye yakashambidzwa musimbi yakanyungudutswa.
