Carcterização da influência da velocidade de corte, pressão e granulometria de lixa no lixamento plano do Pinus elliottii
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Data
2011-06-02
Autores
Santiago, Luiz Fernando Frezzatti [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
No presente trabalho é válido o processo de lixamento da matéria de Pinus elliottii. O objetivo principal do estudo foi entender a influência e interação dos fatores de entrada (granulometria de lixa, velocidade de corte e pressão) sobre as variáveis de saída (taxa de remoção de material, temperatura, rugosidade, potência consumida, força de lixamento, emissão acústica e integridade superficial no processo de lixamento plano da madeira Pinus elliottii, processado paralelo às fibras. O lixamento foi realizado em uma lixadeira plana com sistema de monitoramento e aquisição de dados. Utilizou-se um delineamento de blocos completamente aleatorizados para a realização do experimento. Foram ulitizados quatro tipos de granulometrais de lixa, três velocidades de corte e três pressões, com seis repetições para cada combinação totalizando 216 tratamentos. Os resultados foram analizados através de uma análise de variância (ANOVA) com nével de significância de 5%. para taxa de remoção de material foi observado que a granulometria de lixa, pressão e velocidade influenciaram significativamente. Com relação à temperatura, somente a granulometria de lixa teve uma influência significativa no aquecimento do sistema. Para o acabamento superficial, apenas a granulometria de lixa influenciou significativamente na rugosidade. O consumo de potência foi influenciado pela velocidade de corte e pressão. Para a força de lixamento, a granulometria de lixa e a pressão influenciaram significativamente. Na emissão acústica somente a granulometri de lixa influenciou significativamente no sinal captado. Para a análise de imagens foram observados diferenças no acabamento conforme se aumenta a granulometria da liza. Não foi observada nenhuma interação significativa entre os fatores velocidade de corte e pressão para todas as variáveis de saída estudadas
This study refers to about sanding process of Pinus elliottii wood following the direction of grain. The first aim of this work is trying to undersand the influence of the following factors: belt speed, pressure and grit size on the output parameters of material remove rate, temperature, roughness, image, analysis, cutting force, power consumption and acoustic emisson. It was used a sanding belt with a data acquisition system to record the output variables. For the experiment it was used a randomized block design. The level of factors consider in the experiment it were four size of grit, three levels of pressure and three levels of belt speed. The experiment total treatments of belt speed, pressure and grit size (3 x 3 x 4=36 ) was run with six replicates for a total 216 expeiments. The results of output parameters were analyzed through the analysis of variance (ANOVA) with level of significance 5%. All the factors were significant to material remove rate. Only grit sizes were significant to the differnt levels temperature. The same behavior it was observed to the roughness where only grits size were significant. Differently the power consumption was not significant to the grits size but it was significant to the levels of pressure and belt speed. It was observed that grits sizes and pressure caused significant influence on cutting force. Only grits size significant to the acoustic emission. It was observe on analysis of image that the coarse grit produces a rougher surface than the smooth grit and anatomical elements showed up more when smooth grit was used. It could not found any interaction between the factors to all outputs parameters
This study refers to about sanding process of Pinus elliottii wood following the direction of grain. The first aim of this work is trying to undersand the influence of the following factors: belt speed, pressure and grit size on the output parameters of material remove rate, temperature, roughness, image, analysis, cutting force, power consumption and acoustic emisson. It was used a sanding belt with a data acquisition system to record the output variables. For the experiment it was used a randomized block design. The level of factors consider in the experiment it were four size of grit, three levels of pressure and three levels of belt speed. The experiment total treatments of belt speed, pressure and grit size (3 x 3 x 4=36 ) was run with six replicates for a total 216 expeiments. The results of output parameters were analyzed through the analysis of variance (ANOVA) with level of significance 5%. All the factors were significant to material remove rate. Only grit sizes were significant to the differnt levels temperature. The same behavior it was observed to the roughness where only grits size were significant. Differently the power consumption was not significant to the grits size but it was significant to the levels of pressure and belt speed. It was observed that grits sizes and pressure caused significant influence on cutting force. Only grits size significant to the acoustic emission. It was observe on analysis of image that the coarse grit produces a rougher surface than the smooth grit and anatomical elements showed up more when smooth grit was used. It could not found any interaction between the factors to all outputs parameters
Descrição
Palavras-chave
Pinus elliottii - Lixamento, Pinus - Sanding
Como citar
SANTIAGO, Luiz Fernando Frezzatti. Carcterização da influência da velocidade de corte, pressão e granulometria de lixa no lixamento plano do Pinus elliottii. 2011. 125 f. Dissertação (mestrado) Universidade Estadual Paulista, Faculdade de Engenharia de Guaratinguetá, 2011.