The basic activity carried out in the aluminium sections manufacturing market is the extrusion process. The large demand for aluminium products makes it very important for entrepreneurs to achieve the highest possible production effectiveness, expressed in product tons manufactured within a unit of time. The recognition of the factors affecting the machine operation time losses is a valuable source of information that creates the opportunity to introduce changes improving production effectiveness. One of the identified factors affecting production effectiveness, specified through the OEE (Overall Equipment Effectiveness) measure, are micro-stoppages, the impact of which is rarely noticeable due to the difficulty in their recording. However, it is extremely important due to the total machine operation time losses. For the purpose of analysing micro-stoppages in selected machines in this paper, the authors used testing tools for the quantitative statistical analysis as well as Pareto charts.
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