<?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>2594-1925</journal-id>
<journal-title><![CDATA[Revista de ciencias tecnológicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. cienc. tecnol.]]></abbrev-journal-title>
<issn>2594-1925</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Baja California]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2594-19252023000400103</article-id>
<article-id pub-id-type="doi">10.37636/recit.v6n4e326</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Adjust operating conditions of an in-made house horizontal hydraulic press for a 90° cold bending process]]></article-title>
<article-title xml:lang="es"><![CDATA[Ajustar las condiciones de operación de una prensa hidráulica horizontal de fabricación propia para un proceso de doblado en frío a 90°]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estrada Pimentel]]></surname>
<given-names><![CDATA[Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arcos Gutiérrez]]></surname>
<given-names><![CDATA[Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Betancourt Cantera]]></surname>
<given-names><![CDATA[José Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mayen]]></surname>
<given-names><![CDATA[Jan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Herrera]]></surname>
<given-names><![CDATA[John Edison]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,CIATEQ A.C., Centro de Tecnología Avanzada  ]]></institution>
<addr-line><![CDATA[Lerma Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,CIATEQ A.C., Centro de Tecnología Avanzada  ]]></institution>
<addr-line><![CDATA[ San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Corporación Mexicana de Investigación en Materiales, Ciencia y Tecnología  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>6</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2594-19252023000400103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2594-19252023000400103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2594-19252023000400103&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. - During the cold-bending process, the tooling suffers considerable damage due to excess pressure. This also causes the machines to break down, causing problems in the precision and quality of the metal parts formed. The precision depends on the operating conditions of the press, the tooling employed, and the elastic recovery effect of the material. This study determines the working conditions for a made-in-house horizontal hydraulic press through an experimental design (DOE). This research carried out the V-forming to 90° (ISO 2768-1) of a hot-rolled carbon steel plate, considering pressure, piston permanence time, and recovery factor (Kr). The experimental and statistical analysis ensures accurate forming while the work pressure decreases by 17% and 33%, respectively, regarding the maximum. This reduction will delay the appearance of fatigue damage and have the operating parameters well established; in turn, it will be possible to design tools according to commercial standards.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen. - Durante el proceso de conformado en frío, las herramientas sufren daños considerables debido al exceso de presión. Esto también causa que las máquinas se rompan, causando problemas en la precisión y calidad de las piezas metálicas formadas. La precisión depende de las condiciones de funcionamiento de la prensa, las herramientas empleadas y el efecto elástico de recuperación del material. Este estudio determina las condiciones de trabajo de una prensa hidráulica horizontal fabricado en casa a través de un diseño experimental (DOE). Esta investigación llevó a cabo el conformado en V a 90° (ISO 2768-1) de una placa de acero al carbono laminada en caliente, teniendo en cuenta la presión, el tiempo de permanencia del pistón y el factor de recuperación (Kr). El análisis experimental y estadístico asegura un conformado preciso, mientras que la presión de trabajo disminuyó en un 17% y 33%, respectivamente, con respecto al máximo. Esta reducción retrasará la aparición de daños por fatiga y tendrá los parámetros de funcionamiento bien establecidos; con estos, a su vez, será posible diseñar herramientas de acuerdo con los estándares comerciales.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Cold forming]]></kwd>
<kwd lng="en"><![CDATA[DOE ANOVA]]></kwd>
<kwd lng="en"><![CDATA[Recovery factor (Kr)]]></kwd>
<kwd lng="en"><![CDATA[Factorial analysis 2k]]></kwd>
<kwd lng="en"><![CDATA[Spring back (SB)]]></kwd>
<kwd lng="es"><![CDATA[Conformado en frío]]></kwd>
<kwd lng="es"><![CDATA[DOE ANOVA]]></kwd>
<kwd lng="es"><![CDATA[Factor de recuperación (Kr)]]></kwd>
<kwd lng="es"><![CDATA[Análisis factorial 2k]]></kwd>
<kwd lng="es"><![CDATA[Recuperación elástica (SB)]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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