{"id":10789,"date":"2021-09-28T15:44:48","date_gmt":"2021-09-28T15:44:48","guid":{"rendered":"https:\/\/blog.infraspeak.com\/?p=10789"},"modified":"2026-04-02T18:41:28","modified_gmt":"2026-04-02T18:41:28","slug":"analise-de-oleo-manutencao","status":"publish","type":"post","link":"https:\/\/blog.infraspeak.com\/pt-pt\/analise-de-oleo-manutencao\/","title":{"rendered":"An\u00e1lise de \u00f3leo: uma ferramenta acess\u00edvel de manuten\u00e7\u00e3o preditiva"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div><p><span style=\"font-weight: 400;\">J\u00e1 fal\u00e1mos v\u00e1rias vezes da <\/span><a href=\"https:\/\/blog.infraspeak.com\/pt-pt\/o-que-e-manutencao-preditiva\/\"><span style=\"font-weight: 400;\">manuten\u00e7\u00e3o preditiva<\/span><\/a><span style=\"font-weight: 400;\">. O objetivo deste tipo de manuten\u00e7\u00e3o \u00e9 prever quando vai ocorrer uma avaria com anteced\u00eancia suficiente para a evitar. \u00c9 mais avan\u00e7ada do que a <\/span><a href=\"https:\/\/blog.infraspeak.com\/pt-pt\/manutencao-preventiva\/\"><span style=\"font-weight: 400;\">manuten\u00e7\u00e3o preventiva<\/span><\/a><span style=\"font-weight: 400;\">, mas tamb\u00e9m \u00e9 conhecida por exigir um investimento elevado e um esfor\u00e7o de implementa\u00e7\u00e3o. No entanto, h\u00e1 tantas ferramentas de manuten\u00e7\u00e3o preditiva que n\u00e3o devemos tirar conclus\u00f5es precipitadas. Hoje, queremos perceber melhor como funciona a <\/span><b>an\u00e1lise de \u00f3leo.\u00a0<\/b><\/p>\n<p>&nbsp;<\/p>\n<h2><b>O que \u00e9 a an\u00e1lise de \u00f3leo?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">A an\u00e1lise de \u00f3leo analisa as propriedades do lubrificante, a sua composi\u00e7\u00e3o e ind\u00edcios de contamina\u00e7\u00e3o. Quase todos os equipamentos usam \u00f3leo lubrificante para reduzir o atrito, evitar o sobreaquecimento e prevenir o desgaste do motor e de componentes mec\u00e2nicas. Por isso, a an\u00e1lise de \u00f3leo \u00e9 uma das ferramentas mais \u00fateis, mais vers\u00e1teis e mais acess\u00edveis de manuten\u00e7\u00e3o preditiva, especialmente quando integrada com um <a href=\"https:\/\/infraspeak.com\/pt-pt\/plataforma\/software-gestao-de-ativos\">software gest\u00e3o de ativos<\/a>.<\/p>\n<p>A an\u00e1lise de \u00f3leo \u00e9 particularmente importante em facilities com m\u00faltiplos equipamentos, sendo essencial contar com um <a href=\"https:\/\/infraspeak.com\/pt-pt\/solucoes\/software-facility-management\">software gest\u00e3o de facilities<\/a> para coordenar todas as atividades de manuten\u00e7\u00e3o preditiva de forma integrada.<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">\u2699\ufe0f <\/span><a href=\"https:\/\/blog.infraspeak.com\/pt-pt\/9-tecnicas-de-manutencao-com-base-na-condicao\/\"><b>Quer conhecer outros m\u00e9todos de monitoriza\u00e7\u00e3o da condi\u00e7\u00e3o e manuten\u00e7\u00e3o preditiva? Veja aqui 9 m\u00e9todos de monitoriza\u00e7\u00e3o que tem de conhecer.<\/b><\/a><\/p>\n<p>&nbsp;<\/p>\n<h2><b>Quais s\u00e3o as vantagens da an\u00e1lise de \u00f3leo?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">A an\u00e1lise de \u00f3leo v\u00e1rias vantagens que associamos \u00e0 manuten\u00e7\u00e3o preditiva, incluindo:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">poupan\u00e7a de custos, sobretudo a longo prazo;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">aumenta a fiabilidade dos equipamentos;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">reduz o downtime e aumenta o uptime;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">diminui a manuten\u00e7\u00e3o n\u00e3o planeada;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">aumenta a vida \u00fatil dos equipamentos.<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2><b>Como implementar manuten\u00e7\u00e3o preditiva atrav\u00e9s da an\u00e1lise de \u00f3leo<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">As vantagens da an\u00e1lise de \u00f3leo s\u00e3o evidentes. Mas falta mencionar outra grande vantagem: a an\u00e1lise de \u00f3leo \u00e9 uma das estrat\u00e9gias de manuten\u00e7\u00e3o preditiva mais f\u00e1ceis de implementar. Siga estes cinco passos:<\/span><\/p>\n<h3><\/h3>\n<p>&nbsp;<\/p>\n<h3><b>1. Selecione o equipamento<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Se est\u00e1 a pensar implementar a an\u00e1lise de \u00f3leo, o primeiro passo \u00e9 igual ao de qualquer outra estrat\u00e9gia. Precisa de escolher os equipamentos que justificam o investimento nesta an\u00e1lise. Como a an\u00e1lise de \u00f3leo se aplica a tantas m\u00e1quinas diferentes, pode fazer a sua escolha com base na criticidade ou com <a href=\"https:\/\/blog.infraspeak.com\/pt-pt\/manutencao-baseada-em-risco\/\">base no risco<\/a>, utilizando um <a href=\"https:\/\/infraspeak.com\/pt-pt\/solucoes\/software-cmms\">software CMMS<\/a> para gerir todo o processo.<\/p>\n<p>Para uma implementa\u00e7\u00e3o eficaz da an\u00e1lise de \u00f3leo, \u00e9 fundamental ter um controlo rigoroso dos lubrificantes e materiais necess\u00e1rios atrav\u00e9s de um <a href=\"https:\/\/infraspeak.com\/pt-pt\/solucoes\/software-gestao-stocks\">software gest\u00e3o de stocks<\/a>. Isto garante que tem sempre os \u00f3leos adequados dispon\u00edveis para as an\u00e1lises programadas.<\/p>\n<h3><\/h3>\n<h3><b>2. Planeie a recolha de amostras de \u00f3leo<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A an\u00e1lise de \u00f3leos depende da recolha de amostras regulares. Portanto, precisa de determinar (1) a frequ\u00eancia com que pretende recolher as amostras, (2) como recolher as amostras de forma segura e (3) metodologias para os t\u00e9cnicos n\u00e3o conspurcarem as amostras e garantir que s\u00e3o fi\u00e1veis. A prop\u00f3sito, recomendamos que reveja o nosso artigo sobre <\/span><a href=\"https:\/\/blog.infraspeak.com\/pt-pt\/procedimentos-loto-lockout-tagout\/\"><span style=\"font-weight: 400;\">procedimentos LOTO<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><\/h3>\n<h3><b>3. Escolha os testes apropriados ao \u00f3leo<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">H\u00e1 v\u00e1rios tipos de an\u00e1lise de \u00f3leo. Escolha os testes consoante aquilo que pretende analisar (as propriedades do fluido, o desgaste dos metais ou potencial contamina\u00e7\u00e3o):<\/span><\/p>\n<p>Para equipamentos distribu\u00eddos em diferentes localiza\u00e7\u00f5es, um <a href=\"https:\/\/infraspeak.com\/pt-pt\/solucoes\/field-service-management-software\">software field service management<\/a> pode facilitar significativamente a coordena\u00e7\u00e3o das equipas de recolha de amostras de \u00f3leo e garantir a consist\u00eancia dos procedimentos.<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li aria-level=\"1\"><b>Contagem de part\u00edculas<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A contagem de part\u00edculas mede a quantidade de mat\u00e9ria suspensa no \u00f3leo, o que \u00e9 um bom indicador do desgaste do equipamento.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Teste de viscosidade<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Use um teste de viscosidade se o seu objetivo \u00e9 perceber se o \u00f3leo ainda consegue proteger as outras componentes. Geralmente, a viscosidade acima dos 15% indica que precisa de mudar o \u00f3leo.\u00a0<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Espetroscopia<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A espetroscopia \u00e9 o melhor m\u00e9todo para perceber se h\u00e1 contamina\u00e7\u00e3o com refrigerante, fuel, \u00e1gua ou outros metais (ferro, cobre, chumbo, etc). Na espetroscopia por infravermelhos, h\u00e1 v\u00e1rias tabelas para identificar cada qu\u00edmico com relativa facilidade.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u2699\ufe0f O <\/span><a href=\"https:\/\/www.energy.gov\/sites\/prod\/files\/2020\/04\/f74\/omguide_complete_w-eo-disclaimer.pdf\"><span style=\"font-weight: 400;\">Departamento de Energia dos Estados Unidos<\/span><\/a><span style=\"font-weight: 400;\"> disponibiliza uma tabela muito completa sobre as causas que podem levar ao aparecimento de diferentes metais (6.3.2.)\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li aria-level=\"1\"><b>Percentagem de \u00e1gua\/ Teste Karl Fisher<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A \u00e1gua \u00e9 uma das principais fontes de contamina\u00e7\u00e3o do \u00f3leo. O volume de \u00e1gua em partes por milh\u00e3o \u00e9 uma an\u00e1lise indispens\u00e1vel se suspeita de uma fuga.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>N\u00famero de neutraliza\u00e7\u00e3o<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">O n\u00famero de neutraliza\u00e7\u00e3o mede a acidez ou a alcalinidade do \u00f3leo: corresponde ao peso (em miligramas) do \u00e1cido ou da base para neutralizar o pH de uma grama de \u00f3leo. Quando o \u00f3leo est\u00e1 muito \u00e1cido, pode provocar oxida\u00e7\u00e3o e corros\u00e3o.<\/span><\/p>\n<p>Em ambientes corporativos complexos, um <a href=\"https:\/\/infraspeak.com\/pt-pt\/solucoes\/software-cafm\">software CAFM<\/a> pode integrar eficazmente a an\u00e1lise de \u00f3leo com outras estrat\u00e9gias de manuten\u00e7\u00e3o preditiva, criando uma vis\u00e3o hol\u00edstica do estado dos equipamentos.<\/p>\n<h3><\/h3>\n<p>&nbsp;<\/p>\n<h3><b>4. Defina os m\u00e9todos de an\u00e1lise<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">N\u00e3o basta fazer a an\u00e1lise ao \u00f3leo lubrificante e medir a quantidade total de contaminantes. O quarto passo \u00e9 escolher os <\/span><a href=\"https:\/\/www.stle.org\/files\/TLTArchives\/2021\/02_February\/Feature.aspx\"><span style=\"font-weight: 400;\">m\u00e9todos de an\u00e1lise<\/span><\/a><span style=\"font-weight: 400;\"> que vai aplicar aos dados que recolhe.<\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li aria-level=\"1\"><b>An\u00e1lise cumulativa\u00a0<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A an\u00e1lise cumulativa \u00e9 um bom m\u00e9todo se testar o \u00f3leo em intervalos de tempo regulares. Tamb\u00e9m \u00e9 uma boa op\u00e7\u00e3o para equipamento que \u00e9 usado sem interrup\u00e7\u00f5es.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Aumento em fun\u00e7\u00e3o tempo (\u201crise-over-run\u201d)<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Se recolhe amostras em intervalos de tempo vari\u00e1veis, \u00e9 prefer\u00edvel usar um m\u00e9todo que tenha em conta o tempo e o n\u00famero de ciclos. Assim, pode avaliar se o desgaste do \u00f3leo est\u00e1 a decorrer a um ritmo normal ou n\u00e3o.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Crescimento em %\u00a0<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">No caso de pretender medir a viscosidade do \u00f3leo, recomendamos que me\u00e7a o crescimento em percentagem. Isto vai indicar-lhe como \u00e9 que o \u00f3leo se est\u00e1 a comportar ao longo do tempo, at\u00e9 precisar de ser substitu\u00eddo.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>An\u00e1lise de tend\u00eancias\u00a0<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A an\u00e1lise de tend\u00eancias \u00e9 um dos melhores m\u00e9todos se o seu objetivo \u00e9 perceber se est\u00e1 a haver contamina\u00e7\u00e3o com metais. Acompanhar as tend\u00eancias ao longo do tempo permite detetar a avaria e a sua origem a tempo.\u00a0<\/span><\/p>\n<h3><b>5. Reveja e implemente melhorias\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Uma das partes mais positivas da an\u00e1lise de \u00f3leo \u00e9 que j\u00e1 existe muita informa\u00e7\u00e3o dispon\u00edvel <\/span><i><span style=\"font-weight: 400;\">\u00e0 priori<\/span><\/i><span style=\"font-weight: 400;\">. Isto \u00e9, se um determinado metal est\u00e1 a aumentar ao longo do tempo, \u00e9 relativamente simples perceber a origem do problema e tomar medidas a tempo. Ainda assim, n\u00e3o nos podemos esquecer que, na manuten\u00e7\u00e3o preditiva, <\/span><b>a an\u00e1lise de dados \u00e9 t\u00e3o importante quanto a <a href=\"https:\/\/blog.infraspeak.com\/pt-pt\/9-tecnicas-de-manutencao-com-base-na-condicao\/\">monitoriza\u00e7\u00e3o da condi\u00e7\u00e3o<\/a>.<\/b><\/p>\n<p>A documenta\u00e7\u00e3o adequada dos resultados da an\u00e1lise de \u00f3leo \u00e9 crucial para o cumprimento de normas regulamentares e auditoria de processos, sendo recomend\u00e1vel o uso de um <a href=\"https:\/\/infraspeak.com\/pt-pt\/plataforma\/software-gestao-compliance\">software gest\u00e3o de compliance<\/a> para manter registos organizados e acess\u00edveis.<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Por isso, pode (e deve) cruzar os dados ao longo do tempo. Houve alguma avaria que n\u00e3o conseguiu prevenir? Quais eram os indicadores antes dessa avaria acontecer? J\u00e1 detetou padr\u00f5es e tend\u00eancias? H\u00e1 alguma forma de automatizar mais as repara\u00e7\u00f5es? Avalie o que est\u00e1 a cumprir os objetivos, o que n\u00e3o est\u00e1 a resultar como esperado e tente otimizar o uso dos dados recolhidos ao longo do tempo.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Antes de terminar, queremos recordar que pode integrar os seus dispositivos IoT, analisar dados e automatizar ordens de trabalho\u00a0 numa s\u00f3 plataforma inteligente de gest\u00e3o de manuten\u00e7\u00e3o. Fa\u00e7a mais&#8230; com o mesmo!\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/infraspeak.com\/pt-pt\/demo\/\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-3725\" src=\"http:\/\/blog.infraspeak.com\/wp-content\/uploads\/2019\/11\/PT-Demo-Banner.png\" alt=\"\" width=\"1694\" height=\"582\" srcset=\"https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2019\/11\/PT-Demo-Banner.png 1694w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2019\/11\/PT-Demo-Banner-300x103.png 300w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2019\/11\/PT-Demo-Banner-768x264.png 768w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2019\/11\/PT-Demo-Banner-1024x352.png 1024w\" sizes=\"(max-width: 1694px) 100vw, 1694px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A an\u00e1lise de \u00f3leo \u00e9 uma das ferramentas mais \u00fateis, mais vers\u00e1teis e mais acess\u00edveis\u00a0de manuten\u00e7\u00e3o preditiva e manuten\u00e7\u00e3o baseada na condi\u00e7\u00e3o.<\/p>\n","protected":false},"author":54,"featured_media":8552,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":"","_wp_rev_ctl_limit":""},"categories":[371],"tags":[],"class_list":["post-10789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-manutencao"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>An\u00e1lise de \u00f3leo: uma ferramenta acess\u00edvel de manuten\u00e7\u00e3o preditiva &#8226; Infraspeak Blog<\/title>\n<meta name=\"description\" content=\"A an\u00e1lise de \u00f3leo \u00e9 uma das ferramentas mais \u00fateis, mais vers\u00e1teis e mais acess\u00edveis\u00a0de manuten\u00e7\u00e3o preditiva e manuten\u00e7\u00e3o baseada na condi\u00e7\u00e3o.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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