Amanyathelo okukhusela i-disc ye-brake shrinkage kunye nokukhululeka: isinyithi esinyibilikisiweyo singeniswa kwi-sprue ngokulinganayo ukunciphisa ukugqithiswa kwendawo yediski kunye nokukhusela ukubunjwa kweendawo ezishushu ezenziweyo. Ngokombono wokuqiniswa okulinganayo kweentsimbi zokusa, iindawo ezincinci ezinodonga olucekeceke ngakumbi, likhulu ixabiso le-shrinkage, kwaye kugxininiswe ngakumbi ekunciphiseni. Imowudi yokutyisa inokuba yinkqubo yesango lokutya okanye isondlo sokunyuka. Xa isicwangciso sokutya senkqubo yokugaya samkelwa, intloko ye-sprue inokunyuswa ngokufanelekileyo, njengokunyusa ukuphakama kwebhokisi eliphezulu, ukongeza isango lesango, njl. Imbaleki yomnqamlezo yeyona yunithi iphambili yokutyibiliza kunye nomoya odadayo. Xa isetyenziselwa ukongezwa kwe-shrinkage, ubukhulu becandelo layo bunganyuswa ngokufanelekileyo; I-sprue yangaphakathi iya kuba mfutshane, incinci kwaye ibanzi. I-sprue yangaphakathi imfutshane (i-sprue enqamlezileyo isondele kwi-casting). Ngenxa yempembelelo ye-thermal ye-casting kunye ne-sprue enqamlezileyo kunye nefuthe lokuhamba kokuzaliswa kwentsimbi etyhidiweyo kunye nokutya, i-sprue yangaphakathi ayiyi kuqiniswa kwaye ivalwe kwangaphambili, kwaye iya kuhlala ingavaliwe ixesha elide. I-Thin (ngokubanzi) inokuthintela ukubunjwa kwamalungu ashushu oqhagamshelwano kwi-inlet ye-sprue yangaphakathi. Ububanzi kukuqinisekisa indawo eyaneleyo yokuphuphuma. Nje ukuba ukugatywa kungene kwinqanaba lokuqiniswa okulinganayo lokwandiswa kunye nokucutheka kwegraphitization, intsimbi etyhidiweyo ekwizingate iya kuyeka ukuqukuqela kwaye iya kuqina kwaye ime ngexesha ukuphucula izinga lokusetyenziswa kwegraphitization self feeding, eyimpembelelo yohlengahlengiso olufutshane, olubhityileyo. kunye ne-inzinga ebanzi (intamo yokunyuka) ekutyeni. Kwezinye ii-castings ezinobunzima obukhulu, isikhuphukeli singasetwa ukuze sityiswe. Isikhuphukeli sisetiwe ngcono ekuqaleni kwe-sprue yangaphakathi, okanye isikhuphukeli singasetwa kumbindi ophakathi ukondla idiski kwelinye icala le-sprue yangaphakathi. Kwiindawo ezincinci ezinodonga oluncinci, amanyathelo okwesibini anoculation angamkelwa, oko kukuthi, i-inoculant inokongezwa kwipakethe encinci ye-instantaneous inoculation ukuphucula umphumo we-inoculation kunye nokukhuthaza i-nucleation kunye nokukhula kwegraphite. Inokongezwa phantsi kwepakethe kwaye ihlanjwe kwintsimbi etyhidiweyo.
