Amanyathelo okukhusela i-disc ye-brake shrinkage kunye nokukhululeka: isinyithi esinyibilikisiweyo singeniswa kwi-sprue ngokulinganayo ukunciphisa ukugqithiswa kwendawo yediski kunye nokuthintela ukubunjwa kweendawo ezishushu ezenziweyo.Ngokombono wokuqiniswa okulinganayo kweentsimbi zokuphosa, iindawo ezincinci ezinodonga olucekeceke ngakumbi, likhulu ixabiso le-shrinkage, kwaye kugxininise ngakumbi ekunciphiseni.Imowudi yokutyisa inokuba yinkqubo yokufaka isango lokutya okanye ukutyisa isikhuphukeli.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 kokwandiswa kunye nokucutheka kwegraphitization, intsimbi etyhidiweyo kwi-inganite iya kuyeka ukuqukuqela kwaye iya kuqina kwaye ime ngexesha ukuphucula izinga lokusetyenziswa kwe-graphitization self feeding, eyimpembelelo yohlengahlengiso olufutshane, olubhityileyo. kunye ne-inzingate 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.
