METHOD FOR MONITORING THE CONDITION OF A HYDRAULIC SYSTEM OF A METAL FORMING PLANT AND CONDITION-MONITORING DEVICE

摘要

A method for monitoring the condition of a hydraulic system of a metal forming plant (1) is presented, wherein the hydraulic system is coupled to or provided with a pump (2) which can be driven by a drive motor (3) for providing a working fluid in the hydraulic system, and to or with a heat exchanger (12), through the primary side (13) of which the working fluid flows, and the secondary side (18) of which is provided with a cooling fluid for absorbing some of the thermal energy of the working fluid. In the presented method, during the operation of the hydraulic system the following steps are initiated or carried out by a condition-monitoring device (9): determining (S1) a current cooling power (Pw) of the heat exchanger (12); determining (S2) a current conveying power (Pp) of the pump (2); and determining (S4) a current maintenance emergency and/or a current state of ageing of the hydraulic system (Mi) on the basis of the determined current cooling power (Pw) of the heat exchanger. Furthermore, a condition-monitoring device designed for carrying out the presented method is presented.