Ci gaba da yin simintin gyaran kafa ana sanyaya hankali da ƙarfafawa ta hanyar tilastawa cikin tsari mai zafi mai zafi na jiki, amma har ma da katako a lokacin ƙarfafawa don jure wa ƙarfi shrinkage, sanyaya shrinkage, shrinkage lokaci mika mulki shrinkage danniya, thermal danniya lalacewa ta hanyar zazzabi gradients, karfe bulging danniya hydrostatic matsa lamba lalacewa ta hanyar. ta danniya da lankwasawa da kuma daidaita kayan aiki rashin aiki ya haifar da ƙarin damuwa na tsarin thermo-mechanical.

A ci gaba da samar da simintin gyare-gyare, rage ƙarfin sanyaya yankin sanyaya na biyu wanda ke amfani da sanyi mai rauni na iya ragewa da hana fasa.Rage yawan kwantar da hankali na iya rage damuwa na thermal da ke haifar da gradients zafin jiki a ciki da wajen babban dalilin samfurin, amma kuma zai iya sa ƙarfe na hazo ya karu, rage yawan iyakokin hatsi tare da hazo mai kyau kuma yana hana hazo na ferrite mai kyau, filastik. an inganta.ƙananan ƙarancin ƙima a cikin ci gaba da aiwatar da simintin gyare-gyare, girman ƙimar ƙimar yana tasiri sosai ga zafin jiki na kayan filastik.

Tsarin simintin gyare-gyare tsari ne na sanyaya mara daidaituwa, wanda ke nunawa a cikin rashin daidaituwa tun lokacin da na biyu na sanyaya crystallizer ga dukan tsari, musamman a:

(1) The farko solidified harsashi a cikin mold meniscus kafa a sanyaya da kuma solidification shrinkage saboda daga mold bango, sa'an nan a tsaye matsa lamba na narkakkar karfe don juya da matsa lamba na mold, sabõda haka, a matsayin lamba tsakanin su biyu - fita. – tsauri tsari na alkawari.Fluxes a cikin kauri mai ƙarfi na harsashi yana samuwa akan farfajiyar da ba ta dace ba, wanda ke haifar da rashin daidaituwa da daidaituwar girma na sanyin sanyi da ke fama da harsashi mai ƙarfi shine babban sanadin fashewar farfajiya da fashewar fata.A cikin mold sanya daban-daban kokarin kamar matakin kula, da kuma sauran matakan inganta kariyar slag halaye na iya rage wannan inhomogeneity sanyaya zuwa wani har, ba za a iya shafe.

(2) da slab a cikin sakandare sanyaya yankin na yarda fesa sanyaya ruwa core, sakamakon sanyaya da kuma radiation zafi canja wurin ta cikin iska, sanyaya SPRAY nozzles don sanyaya da jagora rollers ne m sanyaya, idan m sanyaya mai tsanani, zai kai ga fadada. na aikin da ake yi na ƙananan tsage-tsage, ƙyalli, da haifar da ƙarin fashewar ciki.Ba daidai ba sanyaya ruwa core zai haifar da tsawaita rashin dace slab surface zafin jiki, surface zafin jiki na slab a mike a lokacin da fallasa zuwa high yanayin zafi gaggautsa zone, yiwuwa ga yi na transverse fasa, m sanyaya a lokacin farko solidification na oscillation mark trough matsayi ne musamman tsanani.