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Author: Macassi, Iliana Subject: Lean Manufacturing

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    Model of Lean tools for the reduction of waste in the manufacture of non-metallic minerals
    (LACCEI Inc., 2020-07) Abanto, Piero; Guzmán, Carlo; Carvallo, Edgardo; Macassi, Iliana; del Carpio, Christian
    The present paper presents a model that combines tools such as SLP (Systematic Layout Planning), 5´s, Standardization of methods and Preventive Maintenance for the reduction of waste in the manufacture of non-metallic minerals. This RMI (Industrial Rocks and Minerals) production sector has a high growth potential. Around 5 to 20 million tons were produced in the 70s, 80s and 90s, and it increased between 25 and 100 million tons annually in the present millennium in Peru. The problem that is sought to attack is the high amount of material that is wasted in the production process in small and medium-sized companies in that sector. With the validation carried out on our model, results of a reduction of material waste from 135.1 tons / year to 55.6 tons / year were obtained. This meant a waste reduction of 58.8%. The implementation of 5's until the standardization stage indirectly impacted the other components. The result obtained with the design redesign model was from 46.1 tons / year to 16.32 tons / year (65%), the redesign reduces the travel distances with material, which generates less waste in transport. In addition, a reduction of 35 tons / year to 10.5 tons / year (70%) is validated with the pilot testing of the definition and standardization of the prior rock breakage method. Also, the preventive maintenance pilot testing to the cyclone dust extractor, reduced the machine stops and validated than waste is reduced from 54 tons / year to 28.8 tons / year (46.7%).
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    Modelo de Gestión de mantenimiento basado en Lean Manufacturing para incrementar la productividad de una empresa del sector de Plástico
    (LACCEI, Inc., 2019-07) Ames, Victor; Vásquez, Walter; Macassi, Iliana; Raymundo, Carlos
    La demanda actual del sector de plástico ha ido incrementando, logrando sobrepasar la productividad de las PYMES en los países en desarrollo como Perú. Dentro de este marco, la demanda es mayor que la oferta debido a la baja producción de las empresas, que presentan un alto índice de horas por falta de mantenimientos de las máquinas. La finalidad de resolver el problema principal es reducir las horas de baja productividad que representan una gran pérdida monetaria para la empresa. Es por ello, que al implementar este modelo de gestión de mantenimiento que es basado en Lean Manufacturing permitirá tener una amplia ventaja competitiva en el sector. Este modelo se validó implementando las herramientas TPM y SMED de la filosofía de Lean Manufacturing dentro de la planta de plásticos, logrando obtener resultados que determinan el grado de mejora de la productividad en la empresa. Por último, después de haber valido el modelo se concluye que podría incrementar la capacidad utilizada de la empresa en un 20% con la reducción de las mudas.