Sababaha xirashada iyo luminta walxaha dib-u-celinta

Hababka fashilka ee agabka dib-u-celinta ee la isticmaalo waxa lagu soo koobi karaa saddex nooc oo aasaasi ah.

1. Sababo la xiriira cadaadiska farsamada iyo kulaylka kuleyl ee qaab-dhismeedka, xuubka refractory wuxuu soo saaraa dildilaacyo aan dhaqaale ahayn (tamar kulaylka, diirinta farsamada ama hoos u dhaca), kaas oo keena dhaawac.

(2) qaab-dhismeedka wax refractory isbedelo ay sabab u tahay infiltration of slag iyo isbedbeddelka heerkulka dusha kulul (workpiece dusha), oo sidaas samaynta lakabka metamorphic gaar ah, iyo dildilaac barbar socda dusha kulaylka waxaa la abuuraa at isgoyska of lakabka asalka ah iyo metamorphic (qaab-dhismeedka waa la diiray) oo burburay.

(3) Qulqulka dhalaalka iyo nabarka ay sabab u tahay falcelinta birta dhalaalaysa, dharbaaxada iyo dambaska ayaa inta badan sabab u ah abuuritaanka wejiga dareeraha iyo nabaad guurka lakabka (luminta dhalaalidda) ee dusha shaqada.