Efecto del sistema de aserrío tradicional en las características de la madera de encinos
The saw milling process is considered as an important phase of the industrialization of oaks and of the quality of the sawn lumber. The quality control of the sawing process is analyzed, as well as the traditional sawing pattern with the quarter sawing (flat grain vs vertical grain) and their effect...
| Hlavní autor: | |
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| Médium: | Online |
| Jazyk: | spa |
| Vydáno: |
Instituto de Ecología, A.C.
2016
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| On-line přístup: | https://myb.ojs.inecol.mx/index.php/myb/article/view/1284 |
| _version_ | 1799769274047266816 |
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| author | Zavala Zavala, David |
| author_facet | Zavala Zavala, David |
| author_sort | Zavala Zavala, David |
| collection | MYB |
| description | The saw milling process is considered as an important phase of the industrialization of oaks and of the quality of the sawn lumber. The quality control of the sawing process is analyzed, as well as the traditional sawing pattern with the quarter sawing (flat grain vs vertical grain) and their effect on the lumber yield (lumber recovery factor), on the processing time and on the proportion of width dimensions of lumber. Logs of Quercus laurina, Q. candicans y Q. acutifolia were processed in a 8-in wide band sawmill, with traditional saw machinery for pine, The sawing variation (St) was of 3,93 mm, which is considered high showing the low quality of the sawing system, the obtained mean was 25,36 mm and the optimum sawing dimension was of 28,71 mm. The difference means that a large percentage of boards (80 %) was not able to be graded in the thickness category of ¾ inches. The lumber recovery factor of the traditional system was 55,83 % and in the quarter sawn was 52,31 %. The sawing time to process 1 000 board feet in the traditional system was 73 minutes being of 103 minutes in the radial system, which represented 41 % of the traditional system. With the quarter sawn system, a large proportion (77 %) of narrow boards (4-in and 6-in) and small percentage (23 %) of wider than 8-in boards were generated. With the traditional sawing system, the proportions were significatively reversed, for 8-in or wider an 88 % was achieved. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-1284 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2016 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-12842022-11-30T00:53:03Z Efecto del sistema de aserrío tradicional en las características de la madera de encinos Efecto del sistema de aserrío tradicional en las características de la madera de encinos Zavala Zavala, David Sawmilling lumber recovery factor quality control optimal cutting dimension oaks Aserrío coeficiente de aprovechamiento control de calidad dimensión óptima de corte encinos The saw milling process is considered as an important phase of the industrialization of oaks and of the quality of the sawn lumber. The quality control of the sawing process is analyzed, as well as the traditional sawing pattern with the quarter sawing (flat grain vs vertical grain) and their effect on the lumber yield (lumber recovery factor), on the processing time and on the proportion of width dimensions of lumber. Logs of Quercus laurina, Q. candicans y Q. acutifolia were processed in a 8-in wide band sawmill, with traditional saw machinery for pine, The sawing variation (St) was of 3,93 mm, which is considered high showing the low quality of the sawing system, the obtained mean was 25,36 mm and the optimum sawing dimension was of 28,71 mm. The difference means that a large percentage of boards (80 %) was not able to be graded in the thickness category of ¾ inches. The lumber recovery factor of the traditional system was 55,83 % and in the quarter sawn was 52,31 %. The sawing time to process 1 000 board feet in the traditional system was 73 minutes being of 103 minutes in the radial system, which represented 41 % of the traditional system. With the quarter sawn system, a large proportion (77 %) of narrow boards (4-in and 6-in) and small percentage (23 %) of wider than 8-in boards were generated. With the traditional sawing system, the proportions were significatively reversed, for 8-in or wider an 88 % was achieved. El proceso de aserrío de encinos se considera una fase importante de su industrialización y de la calidad de la madera generada. Se analiza el control de calidad del proceso de aserrío, el sistema de corte tradicional con el radial y su efecto en los coeficientes de aprovechamiento, en los tiempos de procesamiento y en la proporción de dimensiones en anchos de la madera generada. Se utilizaron trozas de Quercus laurina, Q. candicans y Q. acutifolia, que se procesaron en un aserradero banda de 8 plg de ancho, con sierras tradicionales para pino. La variación del corte (St) fue de 3,93 mm, que se considera alta y refleja una mala calidad del aserrío, la media fue de 25,36 mm y la dimensión óptima de corte de 28,71 mm, la diferencia indica que un porcentaje considerable de las tablas producidas (80 %) no se puede clasificar en el espesor de la categoría de 3/4 plg. Los coeficientes de aserrío del sistema tradicional fueron de 55,83 % y en el radial de 52,31 %. El tiempo de aserrío para procesar 1 000 pies tablas en el sistema tradicional fue de 73 minutos y en el radial de 103 minutos, lo que representa un 41 % más del tradicional. Con el sistema se aserrío radial, se generó una proporción alta (77 %) de tablas angostas (4 plg y 6 plg), y un porcentaje bajo (23 %) de tablas con anchos mayores de 8 plg. Con el aserrío tradicional, las proporciones se invierten significativamente, para los anchos mayores a 8 plg representaron un 88 %. Instituto de Ecología, A.C. 2016-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf https://myb.ojs.inecol.mx/index.php/myb/article/view/1284 10.21829/myb.2003.921284 Madera y Bosques; Vol. 9 No. 2 (2003): Otoño 2003; 29-39 Madera y Bosques; Vol. 9 Núm. 2 (2003): Otoño 2003; 29-39 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/1284/1455 Derechos de autor 2016 Madera y Bosques |
| spellingShingle | Zavala Zavala, David Efecto del sistema de aserrío tradicional en las características de la madera de encinos |
| title | Efecto del sistema de aserrío tradicional en las características de la madera de encinos |
| title_full | Efecto del sistema de aserrío tradicional en las características de la madera de encinos |
| title_fullStr | Efecto del sistema de aserrío tradicional en las características de la madera de encinos |
| title_full_unstemmed | Efecto del sistema de aserrío tradicional en las características de la madera de encinos |
| title_short | Efecto del sistema de aserrío tradicional en las características de la madera de encinos |
| title_sort | efecto del sistema de aserrío tradicional en las características de la madera de encinos |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/1284 |
| work_keys_str_mv | AT zavalazavaladavid efectodelsistemadeaserriotradicionalenlascaracteristicasdelamaderadeencinos |
