Abstract
The multitude and the variety of the technological causes which can decline processing errors can be incorporated in the pieces which were processed and set in different autovehicles' subensemble, and if they are not detected in time in the checking posts of the quality in the fabrication tide, they can cause defects or even flows with major consequences over the functional reliability of the autovehicles, some of them may necessitate high consummations for eliminating the brought about consequences. The describing of the technological heredity' mechanism helped by the graphs, with a view to establish final properties of the processed piece depending of the had properties in the previous stages, allows taking in consideration of all the processing's leads astray and allows establishing the weight of every influencing factor at those phases.