TPM METHOD IN THE ANALYSIS OF FLOW IN THE COLD ROLLING MILL

The fundamental goal of production logistics can thus be formulated as the pursuance of greater delivery capability and reliability with the lowest possible logistic and production cost. Tasks of production logistics include organisation, planning and scheduling of product manufacturing processes, but it is not an objective of logistics to develop new technologies or to improve manufacturing processes. Production is concerned with short throughput times and high schedule reliability in order to on the one hand, fulfill customer demands and on the other hand, increase planning reliability. Furthermore, with shorter throughput times the risk of changes being made to orders in progress decreases. However, from the business perspective, it is preferred that the available production equipment is highly utilized and that there is the lowest possible WIP (Work in Process level). The TPM method most commonly employs three indicators: MTTR, MTBF and most typically - OEE. The first two are associated exclusively with technical issues of the examined production line. However, as the basic TPM implementation performance indicator stands OEE (Overall Equipment Effectiveness), which is a global efficiency rate. This indicator represents the percentage of theoretically available effectiveness possessed by a device or production line. The paper discusses some examination results for two subsystems, namely the CPA - continuous pickling subsystem and the FHM - four high mill subsystem.