Removal of lubricant added to iron powder metallurgy, with abnormal plasma discharge glow
Abnormal glow discharge plasma is used in removing lubricant from iron powder metallurgical compact in a hydrogen atmosphere, in order to set the best conditions of thermal cycle in the cathodic configuration, to keep the iron characteristics offered. A rotary mixer for preparing the mixtures was us...
| Main Authors: | , , |
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| Format: | Online |
| Language: | spa |
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Universidad Pedagógica y Tecnológica de Colombia
2016
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| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/4138 |
| _version_ | 1801706072527863808 |
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| author | Rodríguez-Fonseca, Pedro Vicente Sarmiento-Santos, Armando Moreno-Téllez, Carlos Mauricio |
| author_facet | Rodríguez-Fonseca, Pedro Vicente Sarmiento-Santos, Armando Moreno-Téllez, Carlos Mauricio |
| author_sort | Rodríguez-Fonseca, Pedro Vicente |
| collection | OJS |
| description | Abnormal glow discharge plasma is used in removing lubricant from iron powder metallurgical compact in a hydrogen atmosphere, in order to set the best conditions of thermal cycle in the cathodic configuration, to keep the iron characteristics offered. A rotary mixer for preparing the mixtures was used.The material was conformed with uniaxial pressure and calculating its density and porosity. With TGA and DSC, the thermal decomposition and the elimination of the lubricant is studied. The removal cycles are performed on the abnormal glow discharge plasma. With TGA the lubricant removal is monitored. Green compacts and the removal process one’s are characterized using optical and SEM microscopy.Adequate removal in the cathode configuration was achieved at 400 °C for 10 minutes. The proposed cycle should be considered for industrial applications due to high heating rates reached with reduced power consumption, and the energy required to maintain the discharge, related to the resistance furnaces used. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-4138 |
| institution | Revista Facultad de Ingeniería |
| language | spa |
| publishDate | 2016 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-41382022-06-15T16:23:45Z Removal of lubricant added to iron powder metallurgy, with abnormal plasma discharge glow Remoción del lubricante adicionado al hierro pulvimetalúrgico, con plasma de la descarga luminiscente anormal Rodríguez-Fonseca, Pedro Vicente Sarmiento-Santos, Armando Moreno-Téllez, Carlos Mauricio iron powder metallurgy DLA powder metallurgy plasma discharge glow Hierro pulvimetalúrgico Pulvimetalurgia DLA Plasma de la DLA Abnormal glow discharge plasma is used in removing lubricant from iron powder metallurgical compact in a hydrogen atmosphere, in order to set the best conditions of thermal cycle in the cathodic configuration, to keep the iron characteristics offered. A rotary mixer for preparing the mixtures was used.The material was conformed with uniaxial pressure and calculating its density and porosity. With TGA and DSC, the thermal decomposition and the elimination of the lubricant is studied. The removal cycles are performed on the abnormal glow discharge plasma. With TGA the lubricant removal is monitored. Green compacts and the removal process one’s are characterized using optical and SEM microscopy.Adequate removal in the cathode configuration was achieved at 400 °C for 10 minutes. The proposed cycle should be considered for industrial applications due to high heating rates reached with reduced power consumption, and the energy required to maintain the discharge, related to the resistance furnaces used. Se emplea el plasma de la descarga luminiscente anormal DLA en la remoción del lubricante de compactos de hierro pulvimetalúrgico en atmósfera de hidrógeno, con el fin de establecer las condiciones óptimas del ciclo térmico en la configuración catódica para mantener las propiedades ofrecidas del hierro. Para la preparación de las mezclas se utiliza un mezclador rotatorio. El material se conforma con presión uniaxial en matriz cilíndrica, calculando su densidad y porosidad. Con TGA y DSC se estudian la descomposición térmica y la eliminación del lubricante, luego, se realizan los ciclos de remoción en la DLA. Con TGA se monitorea el estado de remoción del lubricante de cada ciclo en la DLA. Se caracterizan los compactos en verde y los del proceso de remoción con microscopia óptica y SEM.Se halló una adecuada remoción en la configuración catódica a 400 °C durante 10 minutos, removiéndose la totalidad de lubricante. El ciclo propuesto conviene en aplicaciones industriales por las altas tasas de calentamiento alcanzadas con reducción del consumo de energía, así como de la necesaria en mantener la descarga, referidas a los hornos resistivos utilizados. Universidad Pedagógica y Tecnológica de Colombia 2016-01-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion investigation application/pdf text/html https://revistas.uptc.edu.co/index.php/ingenieria/article/view/4138 10.19053/01211129.4138 Revista Facultad de Ingeniería; Vol. 25 No. 41 (2016); 63-73 Revista Facultad de Ingeniería; Vol. 25 Núm. 41 (2016); 63-73 2357-5328 0121-1129 spa https://revistas.uptc.edu.co/index.php/ingenieria/article/view/4138/3574 https://revistas.uptc.edu.co/index.php/ingenieria/article/view/4138/5042 |
| spellingShingle | iron powder metallurgy DLA powder metallurgy plasma discharge glow Hierro pulvimetalúrgico Pulvimetalurgia DLA Plasma de la DLA Rodríguez-Fonseca, Pedro Vicente Sarmiento-Santos, Armando Moreno-Téllez, Carlos Mauricio Removal of lubricant added to iron powder metallurgy, with abnormal plasma discharge glow |
| title | Removal of lubricant added to iron powder metallurgy, with abnormal plasma discharge glow |
| title_alt | Remoción del lubricante adicionado al hierro pulvimetalúrgico, con plasma de la descarga luminiscente anormal |
| title_full | Removal of lubricant added to iron powder metallurgy, with abnormal plasma discharge glow |
| title_fullStr | Removal of lubricant added to iron powder metallurgy, with abnormal plasma discharge glow |
| title_full_unstemmed | Removal of lubricant added to iron powder metallurgy, with abnormal plasma discharge glow |
| title_short | Removal of lubricant added to iron powder metallurgy, with abnormal plasma discharge glow |
| title_sort | removal of lubricant added to iron powder metallurgy with abnormal plasma discharge glow |
| topic | iron powder metallurgy DLA powder metallurgy plasma discharge glow Hierro pulvimetalúrgico Pulvimetalurgia DLA Plasma de la DLA |
| topic_facet | iron powder metallurgy DLA powder metallurgy plasma discharge glow Hierro pulvimetalúrgico Pulvimetalurgia DLA Plasma de la DLA |
| url | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/4138 |
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