<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-5546</journal-id>
<journal-title><![CDATA[Computación y Sistemas]]></journal-title>
<abbrev-journal-title><![CDATA[Comp. y Sist.]]></abbrev-journal-title>
<issn>1405-5546</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Centro de Investigación en Computación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-55462021000100237</article-id>
<article-id pub-id-type="doi">10.13053/cys-25-1-3892</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Optimización de un proceso industrial de fosfatado mediante simulación de eventos discretos y tiempos determinísticos]]></article-title>
<article-title xml:lang="en"><![CDATA[Phosphating Industrial Process Optimization by Discrete Events Simulation and Deterministic Times]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayala Landeros]]></surname>
<given-names><![CDATA[J. Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Román Flores]]></surname>
<given-names><![CDATA[Sonia E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayala Landeros]]></surname>
<given-names><![CDATA[Rosana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarrete Fernández]]></surname>
<given-names><![CDATA[A. Custodio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Lorence]]></surname>
<given-names><![CDATA[Armida]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de San Juan del Río Tecnológico Nacional de México Departamento de Ingeniería Industrial]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de San Juan del Río Tecnológico Nacional de México Departamento de Gestión Empresarial]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de San Juan del Río Tecnológico Nacional de México Departamento de Sistemas y Computación]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>25</volume>
<numero>1</numero>
<fpage>237</fpage>
<lpage>247</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-55462021000100237&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-55462021000100237&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-55462021000100237&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En este trabajo se muestra la importancia de la Simulación Discreta (SD) en el análisis de procesos, se presenta una propuesta metodológica para lograr optimizar el proceso de Fosfatado de piezas automotrices. El problema radica en el manejo de materiales a través de una grúa viajera automatizada, ya que el producto es transportado en contenedores a lo largo de la línea de producción y la grúa tiene que esperar los tiempos de proceso en cada etapa del mismo, originando muchos tiempos muertos y una baja eficiencia del proceso. El porcentaje de utilización de los equipos con un solo contenedor es de un 21.8% en la etapa más crítica de desengrase, lo cual indica un bajo aprovechamiento de los recursos. Se propuso analizar la producción mediante Simulación Discreta aumentando el número de contenedores que pueden estar en proceso de forma simultánea, de manera que la grúa pueda hacer los movimientos en forma automática, respetando los tiempos de proceso. Se analizaron algunas variables del proceso como son: el % de Aumento en la Producción (%AP), el % de Utilización de Equipos (%UE), los % de Tiempos de Ocio (%TO) y los % de Tiempos de Espera para transporte (%TE). Los resultados indican una mejora significativa en las variables del proceso, obteniéndose los mejores resultados con cuatro contenedores, lográndose un aumento en el % de utilización de los equipos que alcanza un 79.5% con respecto al 21.8% antes mencionado. Esta mejora en el proceso representa un aumento en la producción del 372% con respecto a su producción inicial, así como una mejora significativa de las demás variables consideradas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Discrete Simulation (SD) importance in the analysis of processes is shown at this work, a methodological proposal is presented to achieve the phosphating process optimization of automotive parts. The problem is to handle the materials through an automated traveling crane, since the product is transported by containers along the production line, and the crane has to wait all the process times at each stage, causing many dead times and low process efficiency. By the use of just a container, the equipment has a utilization of 21.8% at the most critical degreasing stage, indicating a low resources use. Was proposed to analyze the production by using Discrete Simulation, increasing the number of simultaneously containers used in process, so the crane could make automatically movements, respecting the process times. Some process variables were analyzed such as: % Production Increase (% AP), % Equipment Use (% EU), % Leisure Time (% TO) and % Waiting Transport Time (% TE). The results indicate a significant improvement in the process variables, obtaining the best results with four containers, achieving a % increase in the equipment use that reaches the 79.5% compared to the previously 21.8% mentioned. This process improvement represents a 372% production increase respecting to its initial production, and other significant improvements in all the considered variables.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Simulación discreta]]></kwd>
<kwd lng="es"><![CDATA[software de simulación]]></kwd>
<kwd lng="es"><![CDATA[proceso de fosfatado]]></kwd>
<kwd lng="es"><![CDATA[utilización de equipos]]></kwd>
<kwd lng="es"><![CDATA[tiempos de ocio]]></kwd>
<kwd lng="es"><![CDATA[tiempos de espera]]></kwd>
<kwd lng="en"><![CDATA[Discrete simulation]]></kwd>
<kwd lng="en"><![CDATA[simulation software]]></kwd>
<kwd lng="en"><![CDATA[phosphating process]]></kwd>
<kwd lng="en"><![CDATA[equipment utilization]]></kwd>
<kwd lng="en"><![CDATA[idle times]]></kwd>
<kwd lng="en"><![CDATA[waiting times]]></kwd>
</kwd-group>
</article-meta>
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