Sulzer Markets and Technology Ag

Abb Schweiz Ag

William Gizzi

Guido Vezzu

Christian Kreienkamp

Matthias Jarusel

Marcel Joho

Andrea Vacca

Daniel Oeschger

Alessandro Sofia

Daniel Kästli

Thomas Rechin

Markus Städeli

Reiner Probst

A method is proposed for the estimating of the residual service life of an apparatus which is subjected to wear during operation steps. For at least one characteristic parameter (T) which is sensitive to the wear (V), a relationship is determined to a time parameter (A) which is representative for the operating period, and a limit value (G) is fixed for the characteristic parameter (T) which gives the maximum permitted wear. A code field (KF) is established which gives a relationship between the characteristic parameter (T), the time parameter (A) and the wear (V), actual values are determined for the characteristic parameter (T) in dependence on the time parameter (A) with the aid of data obtained by a measurement, and the instantaneously present wear (V) is determined from the actual values with reference in each case to the code field (KF). Starting from the instantaneous actual value of the characteristic parameter (T), a determination is made by means of extrapolation to the limit value (G) of the end value of the time parameter (A) for which the maximum permitted wear is reached, and the residual service life (RL) is estimated by a comparison of this end value with the value for the time parameter which belongs to the instantaneously present wear.

Method for the estimating of the residual service life of an apparatus

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Zurich, Switzerland

William Gizzi