Browsing by Author "Analuiza Maiza, Álvaro Alfonso"

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    Análisis de fallas en el proceso productivo de harina de trigo mediante herramientas de control de calidad en la Empresa Molinos Miraflores S.A.
    (Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Carrera de Ingeniería Industrial en Procesos de Automatización, 2020-10) Analuiza Maiza, Álvaro Alfonso; Morales Perrazo, Luis Alberto
    ABSTRACT Despite the fact that “Molinos Miraflores S.A” company keeps control of the production process, there are internal and external factors such as personal production, raw materials or methods used that cause problems and impairs quality of final product. For this reason, the purpose of this research is to perform a failure analysis in the wheat flour production process through the use of quality control tools. The developed research is based on a qualitative - quantitative approach, based on DMAIC methodology of the Six Sigma tool, over a period of eight calendar months, which by collecting data from 30 working days for analysis of attributes and database managed by the company continuous variables analysis corresponding to January 2020, allow a technical-scientific study about current situation of wheat flour production process with respect to the quality and causes of variability. The obtained results indicate that in production areas the parameters that present a constant variability NTE INEN 616 standard, are the moisture content, wet gluten and protein, variation in the index of damaged starch, the drop rate and the presence of foreign matter. Furthermore, in the reception area a potential capacity of the process (Ppk) equal to 1.04 and a sigma level 3, in conditioning a Ppk = 0.75 and a sigma level of 2.26, in milling and sieving a Ppk = 1.14 and a sigma level of 4.12 and finally in the packaging a Ppk = 0.61 and a sigma level of 1.81, generating problems of nutrient deficiency, safety, rejected product and reprocessing that indicate direct losses for the company and decrease in prestige in the market. It is concluded that the processes that are currently being developed in the company are unstable and unable to comply with the specifications, requiring improvement activities such as standardized procedures for quality analysis, maintenance of equipment and machinery, and training on quality control issues in mill industry production processes that seek to reduce variability and production of units with quality problems.