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Harmonização e melhoramento de processos, relativos ao controlo em contínuo de soluções de passivação à base de crómio (III) e ácido clorídico, nas linhas de produção
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| 8 MB | Adobe PDF |
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Abstract(s)
Atualmente, o setor siderúrgico em Portugal sofre de uma forte competitividade proveniente
dos mercados internacionais, tornando-se necessário investir de forma contínua no seu
desenvolvimento, nomeadamente em melhorias nos processos de fabrico e na qualidade dos
produtos comercializados, permitindo a prática de preços mais competitivos e consequente
aumento da segmentação geográfica de mercado. Como tal, torna-se necessário apostar em
sistemas de gestão para todas as áreas que envolvam valor, de forma a controlar e monitorizar
todas as atividades para uma produção mais eficiente e com menores custos associados.
Neste âmbito, o trabalho desenvolvido surgiu da oportunidade de melhorar o controlo das
matérias subsidiárias utilizadas nos processos das linhas de decapagem e de galvanização,
constatando-se através dos dados recolhidos referentes às condições de operação das linhas
de produção que o método de controlo adotado pela empresa poderia ser melhorado.
O estudo desenvolvido consistiu em diversos ensaios em contexto laboratorial, pesquisa ao
nível académico e contato com diversas empresas especializadas em instrumentação para
encontrar e analisar uma vasta gama de tecnologias que promovessem um controlo preciso
e contínuo das concentrações destas soluções ao longo dos processos de fabrico.
Os resultados obtidos permitiram evidenciar, de um ponto de vista técnico e económico, quais
as tecnologias que melhor se adaptam às condições de operação das respetivas linhas de
produção em relação ao custo/qualidade, de forma a tornar o projeto um investimento rentável
e benéfico para a empresa.
Currently, the steel sector in Portugal suffers from strong competitiveness from international markets, becoming necessary to invest continuously in its development, namely in improvements in manufacturing processes and in the quality of the products commercialized, allowing the practice of more competitive prices and consequent increase in geographic market segmentation. As such, it is necessary to invest in management systems for all areas that involve value, in order to control and monitor all activities for a more efficient production and with lower associated costs. In this context, the work developed came from the opportunity to improve the control of subsidiary materials used in the processes of pickling and galvanizing lines, verifying through the data collected regarding the operating conditions of the production lines that the control method adopted by company could be improved. The developed study consisted of several tests in a laboratory context, academic research and contact with several companies specialized in instrumentation to find and analyze a wide range of analytical chemical technologies, which promote a precise and continuous control of the concentrations of these solutions throughout the manufacturing processes. The results obtained allowed to evidence, from a technical and economic point of view, which technologies are best suited to the operating conditions of the respective production lines in relation to cost/quality, in order to make the project a profitable and beneficial investment for the company.
Currently, the steel sector in Portugal suffers from strong competitiveness from international markets, becoming necessary to invest continuously in its development, namely in improvements in manufacturing processes and in the quality of the products commercialized, allowing the practice of more competitive prices and consequent increase in geographic market segmentation. As such, it is necessary to invest in management systems for all areas that involve value, in order to control and monitor all activities for a more efficient production and with lower associated costs. In this context, the work developed came from the opportunity to improve the control of subsidiary materials used in the processes of pickling and galvanizing lines, verifying through the data collected regarding the operating conditions of the production lines that the control method adopted by company could be improved. The developed study consisted of several tests in a laboratory context, academic research and contact with several companies specialized in instrumentation to find and analyze a wide range of analytical chemical technologies, which promote a precise and continuous control of the concentrations of these solutions throughout the manufacturing processes. The results obtained allowed to evidence, from a technical and economic point of view, which technologies are best suited to the operating conditions of the respective production lines in relation to cost/quality, in order to make the project a profitable and beneficial investment for the company.
Description
Keywords
Decapagem Cromatagem HCl Cr (III) Controlo de processo Pickling Chromatation Process control