Discos Abrasivos para la Limpieza de Soldaduras
Fecha
2010-07-20
Autores
Garcia Paz, Francisco
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Editor
Universidad Central "Marta Abreu" de Las Villas
Resumen
El presente trabajo trata sobre la elaboración de discos abrasivos de corte, a partir de mezclas de cemento P-350 y agua, como aglutinante, y arena sílice, como abrasivo. Para ello, se obtienen distintos prototipos de discos (con espesores de 4 y 8 mm), reforzados exteriormente con fibras sintéticas. Resulta importante considerar la atención sobre un adecuado proceso de llenado del molde, combinado con una precisa colocación de la malla de fibra sintética, para lograr procesos de desmoldado, que garanticen la integridad física de los discos elaborados y su adecuado funcionamiento. Los discos obtenidos con mejores características se elaboran a partir de un mortero autofraguante de arena sílice (58,8 %) y cemento Portland P-350 (29,5 %) y agua (11,8 %). Esta variante posee una productividad en el desbaste de 2 kg·h-1, permitiendo un ahorro económico unitario de 2,85 CUC.
This paper tries about the development of abrasive cutting discs, from mixtures of cement P-350 and water as a binder, and silica sand as abrasive. To do this, are obtained different prototypes of disks (with thicknesses of 4 and 8 mm), externally reinforced with synthetic fibres. It’s important to consider adequate attention to the mold filling process, combined with a precise placement of synthetic mesh to achieve stripper processes that ensure the physical integrity of the discs produced and its proper functioning. The disks obtained with better features are made from a mortar auto-forging silica sand (58,8 %) and P-350 Portland cement (29,5 %) and water (11,8 %). This variant has a roughing productivity of 2 kg·h-1, allowing a unitary cost saving of 2,85 CUC.
This paper tries about the development of abrasive cutting discs, from mixtures of cement P-350 and water as a binder, and silica sand as abrasive. To do this, are obtained different prototypes of disks (with thicknesses of 4 and 8 mm), externally reinforced with synthetic fibres. It’s important to consider adequate attention to the mold filling process, combined with a precise placement of synthetic mesh to achieve stripper processes that ensure the physical integrity of the discs produced and its proper functioning. The disks obtained with better features are made from a mortar auto-forging silica sand (58,8 %) and P-350 Portland cement (29,5 %) and water (11,8 %). This variant has a roughing productivity of 2 kg·h-1, allowing a unitary cost saving of 2,85 CUC.
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Palabras clave
Abrasivos, Discos Abrasivos, Disco de Desbaste, Limpieza de Soldaduras, Abrasive, Abrasive Discs, Grinding Disc, Cleaning Welds