The dependences analysis between the non-conformities
level (PN) and downtime (TP), breakdown time (TA),
coefficient of operation (WE), coefficient of speed (WPD),
coefficient of useful operating time (UCD) and coefficient
of utilization (WW) are shown in Table 4.
Unplanned downtime is divided into failures mold
(TAf) and other failures of the machine (TAm). The
division of tolerance forms and other equipment failures,
not found in the literature, will more precisely identify the
main causes responsible for the reduction in the casting
quality level.