{"id":16045,"date":"2021-11-01T20:39:55","date_gmt":"2021-11-01T20:39:55","guid":{"rendered":"https:\/\/nanovea.com\/?p=16045"},"modified":"2025-03-26T20:56:09","modified_gmt":"2025-03-26T20:56:09","slug":"lixa-abrasao-desempenho-usa-tribometro","status":"publish","type":"post","link":"https:\/\/nanovea.com\/pt\/lixa-abrasao-desempenho-usa-tribometro\/","title":{"rendered":"Desempenho da Lixa Abras\u00e3o Usando um Trib\u00f4metro"},"content":{"rendered":"
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DESEMPENHO DA LIXA NA ABRAS\u00c3O<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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USANDO UM TRIB\u00d4METRO<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Preparado por<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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DUANJIE LI, PhD<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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INTRODU\u00c7\u00c3O<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A lixa consiste em part\u00edculas abrasivas coladas a uma face de um papel ou pano. V\u00e1rios materiais abrasivos podem ser usados para as part\u00edculas, tais como granada, carboneto de sil\u00edcio, \u00f3xido de alum\u00ednio e diamante. A lixa \u00e9 amplamente aplicada em diversos setores industriais para criar acabamentos de superf\u00edcie espec\u00edficos em madeira, metal e drywall. Muitas vezes, elas trabalham sob contato de alta press\u00e3o aplicada manualmente ou com ferramentas el\u00e9tricas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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IMPORT\u00c2NCIA DA AVALIA\u00c7\u00c3O DO DESEMPENHO DA LIXA DE LIXA POR ABRAS\u00c3O<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A efic\u00e1cia da lixa \u00e9 muitas vezes determinada por seu desempenho em termos de abras\u00e3o sob diferentes condi\u00e7\u00f5es. O tamanho do gr\u00e3o, ou seja, o tamanho das part\u00edculas abrasivas incrustadas na lixa, determina a taxa de desgaste e o tamanho dos arranh\u00f5es do material a ser lixado. As lixas de maior granulometria t\u00eam part\u00edculas menores, resultando em menores velocidades de lixamento e acabamentos superficiais mais finos. Lixas com o mesmo n\u00famero de gr\u00e3os, mas feitas de materiais diferentes, podem ter comportamentos n\u00e3o semelhantes sob condi\u00e7\u00f5es secas ou \u00famidas. S\u00e3o necess\u00e1rias avalia\u00e7\u00f5es tribol\u00f3gicas confi\u00e1veis para garantir que a lixa fabricada possua o comportamento abrasivo desejado. Estas avalia\u00e7\u00f5es permitem aos usu\u00e1rios comparar quantitativamente os comportamentos de desgaste de diferentes tipos de lixas de forma controlada e monitorada, a fim de selecionar o melhor candidato para a aplica\u00e7\u00e3o desejada.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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OBJETIVO DA MEDI\u00c7\u00c3O<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Neste estudo, apresentamos a capacidade do Trib\u00f4metro Pneum\u00e1tico de Alta Carga NANOVEA T2000 de avaliar quantitativamente o desempenho de abras\u00e3o de v\u00e1rias amostras de lixa em condi\u00e7\u00f5es secas e \u00famidas.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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NANOVEA T2000 Alta Carga
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PROCEDIMENTOS DE TESTE<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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O coeficiente de atrito (COF) e o desempenho \u00e0 abras\u00e3o de dois tipos de lixas foram avaliados pelo Trib\u00f4metro NANOVEA T100. Uma bola de a\u00e7o inoxid\u00e1vel 440 foi usada como contra-material. As cicatrizes de desgaste da esfera foram examinadas ap\u00f3s cada teste de desgaste utilizando o NANOVEA Perfilador \u00f3ptico 3D sem contato<\/a> para garantir medi\u00e7\u00f5es precisas de perda de volume.<\/p>

Observe que uma bola de a\u00e7o inoxid\u00e1vel 440 foi escolhida como material do contador para criar um estudo comparativo, mas qualquer material s\u00f3lido poderia ser substitu\u00eddo para simular uma condi\u00e7\u00e3o de aplica\u00e7\u00e3o diferente.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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RESULTADOS DOS TESTES E DISCUSS\u00c3O<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A FIGURA 1 mostra uma compara\u00e7\u00e3o COF da lixa 1 e 2 em condi\u00e7\u00f5es ambientais secas e \u00famidas. A lixa 1, em condi\u00e7\u00f5es secas, mostra um COF de 0,4 no in\u00edcio do teste que diminui progressivamente e se estabiliza a 0,3. Em condi\u00e7\u00f5es \u00famidas, esta amostra apresenta um COF m\u00e9dio mais baixo de 0,27. Em contraste, o COF da amostra 2 mostra um COF seco de 0,27 e um COF \u00famido de ~ 0,37.\u00a0<\/p>

Observe que a oscila\u00e7\u00e3o nos dados de todos os gr\u00e1ficos de COF foi causada pelas vibra\u00e7\u00f5es geradas pelo movimento de deslizamento da bola contra as superf\u00edcies \u00e1speras da lixa.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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FIGURA 1: <\/span>Evolu\u00e7\u00e3o do COF durante os testes de desgaste.<\/span>
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O FIGURA 2 resume os resultados da an\u00e1lise das cicatrizes de desgaste. As cicatrizes de desgaste foram medidas usando um microsc\u00f3pio \u00f3tico e um NANOVEA 3D Non-Contact Optical Profiler. FIGURA 3 e FIGURA 4 comparam as cicatrizes de desgaste das bolas SS440 desgastadas ap\u00f3s os testes de desgaste em Lixa 1 e 2 (condi\u00e7\u00f5es \u00famidas e secas). Como mostrado no FIGURA 4, o NANOVEA Optical Profiler captura com precis\u00e3o a topografia da superf\u00edcie das quatro bolas e suas respectivas faixas de desgaste que foram ent\u00e3o processadas com o software NANOVEA Mountains Advanced Analysis para calcular a perda de volume e a taxa de desgaste. No microsc\u00f3pio e na imagem do perfil da bola, pode-se observar que a bola utilizada para o teste de lixa 1 (seca) exibia uma cicatriz de desgaste achatada maior em compara\u00e7\u00e3o com as outras, com uma perda de volume de 0,313\u00a0mm<\/span>3<\/sup>. Em contraste, a perda de volume da Lixa 1 (molhada) foi de 0,131\u00a0mm<\/span>3<\/sup>. Para Lixa 2 (seca) a perda de volume foi de 0,163\u00a0mm<\/span>3<\/sup>\u00a0e para Lixa 2 (\u00famida) a perda de volume aumentou para 0,237\u00a0mm<\/span>3<\/sup>.<\/p>

Al\u00e9m disso, \u00e9 interessante observar que o COF desempenhou um papel importante no desempenho de abras\u00e3o das lixas. A lixa 1 exibiu COF mais alto na condi\u00e7\u00e3o seca, levando a uma maior taxa de abras\u00e3o para a esfera SS440 utilizada no teste. Em compara\u00e7\u00e3o, o maior COF da lixa 2 na condi\u00e7\u00e3o \u00famida resultou em uma maior taxa de abras\u00e3o. Os rastros de desgaste das lixas ap\u00f3s as medidas s\u00e3o exibidos na FIGURA 5.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Ambas as lixas 1 e 2 afirmam funcionar em ambientes secos e \u00famidos. No entanto, eles exibiram desempenho de abras\u00e3o significativamente diferente em condi\u00e7\u00f5es secas e \u00famidas. NANOVEA trib\u00f4metros <\/a>fornecem recursos de avalia\u00e7\u00e3o de desgaste bem controlados, quantific\u00e1veis e confi\u00e1veis que garantem avalia\u00e7\u00f5es de desgaste reproduz\u00edveis. Al\u00e9m disso, a capacidade de medi\u00e7\u00e3o in situ do COF permite aos usu\u00e1rios correlacionar diferentes est\u00e1gios de um processo de desgaste com a evolu\u00e7\u00e3o do COF, o que \u00e9 fundamental para melhorar a compreens\u00e3o fundamental do mecanismo de desgaste e das caracter\u00edsticas tribol\u00f3gicas da lixa.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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FIGURA 2: <\/span>Usar o volume da cicatriz das bolas e o COF m\u00e9dio sob diferentes condi\u00e7\u00f5es.<\/span>
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FIGURA 3: <\/span>Usar as cicatrizes das bolas ap\u00f3s os testes.<\/span>
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FIGURA 4: <\/span>Morfologia 3D das cicatrizes de desgaste nas bolas.<\/span>
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"resultados\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"resultados\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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FIGURA 5: <\/span>Desgaste de faixas nas lixas sob diferentes condi\u00e7\u00f5es.<\/span>
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CONCLUS\u00c3O<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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O desempenho em abras\u00e3o de dois tipos de lixas com o mesmo n\u00famero de gr\u00e3os foi avaliado sob condi\u00e7\u00f5es secas e \u00famidas neste estudo. As condi\u00e7\u00f5es de servi\u00e7o da lixa t\u00eam um papel fundamental na efic\u00e1cia do desempenho do trabalho. A lixa 1 teve um comportamento de abras\u00e3o significativamente melhor sob condi\u00e7\u00f5es secas, enquanto a lixa 2 teve um melhor desempenho sob condi\u00e7\u00f5es \u00famidas. O atrito durante o processo de lixamento \u00e9 um fator importante a ser considerado ao avaliar o desempenho em termos de abras\u00e3o. O NANOVEA Optical Profiler mede com precis\u00e3o a morfologia 3D de qualquer superf\u00edcie, como cicatrizes de desgaste em uma bola, garantindo uma avalia\u00e7\u00e3o confi\u00e1vel do desempenho de abras\u00e3o da lixa neste estudo. O Trib\u00f4metro NANOVEA mede o coeficiente de atrito in situ durante um teste de desgaste, fornecendo uma vis\u00e3o sobre as diferentes etapas de um processo de desgaste. Ele tamb\u00e9m oferece testes de desgaste e atrito repet\u00edveis usando os modos rotativo e linear compat\u00edveis com ISO e ASTM, com m\u00f3dulos opcionais de desgaste e lubrifica\u00e7\u00e3o a alta temperatura dispon\u00edveis em um sistema pr\u00e9-integrado. Esta gama inigual\u00e1vel permite aos usu\u00e1rios simular diferentes ambientes severos de trabalho dos rolamentos de esferas, incluindo alta tens\u00e3o, desgaste e alta temperatura, etc. Tamb\u00e9m fornece uma ferramenta ideal para avaliar quantitativamente os comportamentos tribol\u00f3gicos de materiais superiores resistentes ao desgaste sob cargas elevadas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Tem um aplicativo semelhante?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tCONVERSE COM UM ESPECIALISTA AGORA<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tOBTENHA PRE\u00c7OS E DETALHES RAPIDAMENTE<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

SANDPAPER ABRASION PERFORMANCE USING A TRIBOMETER Prepared by DUANJIE LI, PhD INTRODUCTION Sandpaper consists of abrasive particles glued to one face of a paper or cloth. Various abrasive materials can be used for the particles, such as garnet, silicon carbide, aluminum oxide and diamond. Sandpaper is widely applied in a variety of industrial sectors to […]<\/p>","protected":false},"author":1,"featured_media":16073,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[7,349,380,355,335,373,336],"tags":[],"class_list":["post-16045","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application-notes","category-laboratory-testing","category-liquid-tribology","category-profilometry-volume-area","category-profilometry-testing","category-rotational-tribology","category-tribology-testing"],"_links":{"self":[{"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/posts\/16045","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/comments?post=16045"}],"version-history":[{"count":66,"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/posts\/16045\/revisions"}],"predecessor-version":[{"id":24581,"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/posts\/16045\/revisions\/24581"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/media\/16073"}],"wp:attachment":[{"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/media?parent=16045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/categories?post=16045"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nanovea.com\/pt\/wp-json\/wp\/v2\/tags?post=16045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}