The absence of studies on the peculiarities of the process of grinding crack nucleation and its formation into main cracks depending on the method of obtaining workpieces from ferromagnetic materials does not allow the unambiguous use of existing recommendations to eliminate these defects. The aim of this work is to increase the efficiency of finishing operations in the production of parts from ferroceramic materials by reducing the intensity of crack and chip formation by increasing their crack resistance at the stage of obtaining blanks. A model was developed that describes the thermomechanical processes that occur during the sintering stage of the production of ferroceramic blanks. The influence of sintering methods on the intensity of crack and chip formation in the workpieces is investigated. Criteria for crack and chip formation on ground surfaces were obtained and their relationship with the technological characteristics of the grinding process was established. Recommendations for optimizing and controlling thermomechanical processes in the processing of parts made of ferroceramic materials and methods of sintering their blanks have been developed, which made it possible to significantly reduce the intensity of cracking and chipping on their working surfaces during finishing operations.