بهبود فرایند اکستروژن در تولید تایر با استفاده از روش شش سیگما

Nowadays, market’s constant changes require continuous flexibility and adaptation in the supply provided by organizations. In this context, the automotive industry represents one of the most demanding sectors due to the high levels of competition it is exposed to. Therefore, and so that these organizations are able to survive, it is crucial to seek operational excellence. This is undertaken through the constant processes improvement and continuous reduction of costs. This study was developed at a tire manufacturing company with the purpose of improving the rubber extrusion process of two tire semi-products: the tread and the sidewall. By adopting Six Sigma methodology and using the DMAIC cycle (Define-Measure-Analyze-Improve-Control), one was able to implement some improvement procedures whose resulted in a decrease of 0,89% on the indicator of work-off generated by the production system. This approach resulted in a significant financial impact (savings of over 165 000€ per annum) on the company’s quality expenses.