Avaliação de desempenho no processo de lixamento de madeiras das espécies Pinus elliottii e Corymbia citriodora
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Data
2016-02-29
Autores
Leite, Sueli Souza [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
O lixamento da madeira envolve inúmeras variáveis as quais influenciam na qualidade superficial da peça produzida, tornando-se por isso, um processo complexo. Atua de forma imprescindível nas indústrias, principalmente fabricantes de móveis, painéis, molduras, esquadrias e dentre outras. Entretanto, é tratado de forma empírica, prejudicando a qualidade do produto e elevando os custos de produção, visto que é, um dos processamentos mais caros na indústria de madeira. Sabido disto, este trabalho, teve por objetivo combinar um conjunto de fatores para padronizar o processo de lixamento. Para isto, seguiu o planejamento experimental de Taguchi, método baseado em conceitos estatísticos, responsável por diagnosticar o conjunto de fatores que propiciam o alcance da qualidade do produto final. A experimentação realizou-se em relação a uma matriz ortogonal L8, criando assim, oito condições diferentes de lixamento, repetindo-as três vezes cada, totalizando em 24 ensaios. Variou os níveis dos seguintes fatores: granulometria, grão abrasivo, sentido do lixamento e espécie da madeira, com o intuito de analisar o comportamento dos parâmetros: emissão sonora, potência, rugosidade, taxa de remoção e temperatura no decorrer do processo. Por meio da análise de variância (ANOVA), concluiu-se que o comportamento dos parâmetros foram influênciados pelos fatores estipulados, os quais interferiram na qualidade superficial da madeira.
The sanding of wood involves numerous variables which influence the surface quality of the produced piece, becoming therefore a complex process. It is a crucial process in industries, particularly manufacturers such as furniture, panels, moldings, frames and others. However, the process is trated empirically, decreasing the product quality and increasing production costs, since it is one of the most expensive processes in the wood industry. According to this, this paper, aimed to standardize a set of factors to achieve the best surface finish of the wood. For this, the following experimental design Taguchi method based on statistical concepts, responsible for diagnosing the set of factors that promote the achievement of the quality of the final product. The experiment was performed in relation to a matrix L8 orthogonal matrix, creating eight different conditions sanding, repeating three times each, totaling in 24 trials. Varied levels of the following factors: particle size, abrasive grain, sense of sanding and timber species, in order to analyze the parameters of behavior, noise emission, power, roughness, temperature and removal rate in the process. Through analysis of variance (ANOVA), it was concluded that the behavior parameters were influenced by prescribed factors which interfere in the surface quality of the wood.
The sanding of wood involves numerous variables which influence the surface quality of the produced piece, becoming therefore a complex process. It is a crucial process in industries, particularly manufacturers such as furniture, panels, moldings, frames and others. However, the process is trated empirically, decreasing the product quality and increasing production costs, since it is one of the most expensive processes in the wood industry. According to this, this paper, aimed to standardize a set of factors to achieve the best surface finish of the wood. For this, the following experimental design Taguchi method based on statistical concepts, responsible for diagnosing the set of factors that promote the achievement of the quality of the final product. The experiment was performed in relation to a matrix L8 orthogonal matrix, creating eight different conditions sanding, repeating three times each, totaling in 24 trials. Varied levels of the following factors: particle size, abrasive grain, sense of sanding and timber species, in order to analyze the parameters of behavior, noise emission, power, roughness, temperature and removal rate in the process. Through analysis of variance (ANOVA), it was concluded that the behavior parameters were influenced by prescribed factors which interfere in the surface quality of the wood.
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Palavras-chave
Lixamento, Madeira, Planejamento experimental, Rugosidade, Sanding, Wood, Experimental planning, Roughness