{"id":5854,"date":"2025-12-25T03:55:56","date_gmt":"2025-12-25T03:55:56","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5854"},"modified":"2025-12-25T03:55:56","modified_gmt":"2025-12-25T03:55:56","slug":"gb-9074-combination-screws-specs-guide","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/pt\/blog\/gb-9074-combination-screws-specs-guide\/","title":{"rendered":"Guia de especifica\u00e7\u00f5es de parafusos combinados GB 9074"},"content":{"rendered":"<h2>Introdu\u00e7\u00e3o aos parafusos combinados<\/h2>\n<p>Parafusos combinados, conforme definidos na s\u00e9rie GB 9074, s\u00e3o conjuntos de fixa\u00e7\u00e3o integrados compostos por um parafuso, uma arruela de press\u00e3o e uma arruela plana. Essas normas garantem uniformidade em design, dimens\u00f5es e desempenho para uso confi\u00e1vel em aplica\u00e7\u00f5es mec\u00e2nicas e el\u00e9tricas. A norma GB9074.4 abrange parafusos de cabe\u00e7a panela com rebaixo cruzado e arruelas, a GB9074.8 aborda variantes de cabe\u00e7a panela pequena com rebaixo cruzado e a GB9074.13 especifica conjuntos de cabe\u00e7a sextavada com rebaixo cruzado. Esses parafusos s\u00e3o projetados para fornecer propriedades antiafrouxamento por meio das arruelas incorporadas, aumentando a integridade da junta sob vibra\u00e7\u00e3o ou cargas din\u00e2micas.<\/p>\n<p>Na fabrica\u00e7\u00e3o, a\u00e7os inoxid\u00e1veis \u200b\u200bcomo o SUS304 e o SUS316 predominam devido \u00e0 sua resist\u00eancia \u00e0 corros\u00e3o, enquanto op\u00e7\u00f5es em a\u00e7o carbono (como 1010, 1018 e 10B21) est\u00e3o dispon\u00edveis para requisitos de maior resist\u00eancia, embora necessitem de tratamento t\u00e9rmico e processos de revestimento. Este guia se baseia em normas nacionais estabelecidas para oferecer especifica\u00e7\u00f5es detalhadas, auxiliando os engenheiros na sele\u00e7\u00e3o e aplica\u00e7\u00e3o para desempenho e conformidade ideais.<\/p>\n<h2>Tipos e configura\u00e7\u00f5es<\/h2>\n<p>Os parafusos combinados variam de acordo com o estilo da cabe\u00e7a e os componentes de montagem:<\/p>\n<ul>\n<li><strong>Cabe\u00e7a Pan (GB9074.4):<\/strong> Apresenta uma cabe\u00e7a maior e mais espessa para uma distribui\u00e7\u00e3o de carga mais ampla, baseada nos parafusos de cabe\u00e7a panela com rebaixo cruzado GB818.<\/li>\n<li><strong>Cabe\u00e7a Pan pequena (GB9074.8):<\/strong> Possui uma cabe\u00e7a menor e mais fina em compara\u00e7\u00e3o com o GB9074.4, alinhada com os parafusos de cabe\u00e7a panela pequena com rebaixo cruzado GB823, adequada para instala\u00e7\u00f5es com espa\u00e7o limitado.<\/li>\n<li><strong>Cabe\u00e7a hexagonal com recesso em cruz (GB9074.13):<\/strong> Combina aplica\u00e7\u00e3o de torque hexagonal com recesso transversal, em conformidade com as normas GB29.2, ideal para necessidades de alto torque.<\/li>\n<\/ul>\n<p>Cada tipo inclui uma arruela de press\u00e3o (GB9074.26) e uma arruela plana (GB9074.24 ou GB97.4), projetadas especificamente para uso combinado em vez de pe\u00e7as padr\u00e3o dispon\u00edveis no mercado, garantindo encaixe e funcionalidade precisos.<\/p>\n<h2>Especifica\u00e7\u00f5es dimensionais para GB9074.4<\/h2>\n<p>A norma GB9074.4 especifica as dimens\u00f5es para parafusos combinados de cabe\u00e7a panela com rebaixo transversal. O componente do parafuso est\u00e1 em conformidade com a norma GB818, com conjuntos que variam de 5 mm a 90 mm de comprimento, superando as faixas padr\u00e3o em termos de versatilidade. Os principais par\u00e2metros incluem passo da rosca, di\u00e2metro da cabe\u00e7a (dk), altura da cabe\u00e7a (k) e detalhes do rebaixo. Todas as medidas est\u00e3o em mil\u00edmetros.<\/p>\n<div class=\"table-container\" style=\"overflow-x: auto; width: 100%;\">\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<th colspan=\"3\">Especifica\u00e7\u00e3o da rosca d<\/th>\n<th>M2.5<\/th>\n<th>M3<\/th>\n<th>M3.5<\/th>\n<th>M4<\/th>\n<th>M5<\/th>\n<th>M6<\/th>\n<th>M8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td colspan=\"3\">Altura p<\/td>\n<td>0.45<\/td>\n<td>0.5<\/td>\n<td>0.6<\/td>\n<td>0.7<\/td>\n<td>0.8<\/td>\n<td>1<\/td>\n<td>1.25<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Di\u00e2metro da cabe\u00e7a dk<\/td>\n<td colspan=\"2\">m\u00e1ximo<\/td>\n<td>5<\/td>\n<td>5.6<\/td>\n<td>7<\/td>\n<td>8<\/td>\n<td>9.5<\/td>\n<td>12<\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">min<\/td>\n<td>4.7<\/td>\n<td>5.3<\/td>\n<td>6.64<\/td>\n<td>7.64<\/td>\n<td>9.14<\/td>\n<td>11.57<\/td>\n<td>15.57<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Espessura da cabe\u00e7a k<\/td>\n<td colspan=\"2\">m\u00e1ximo<\/td>\n<td>2.1<\/td>\n<td>2.4<\/td>\n<td>2.6<\/td>\n<td>3.1<\/td>\n<td>3.7<\/td>\n<td>4.6<\/td>\n<td>6<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">min<\/td>\n<td>1.96<\/td>\n<td>2.26<\/td>\n<td>2.46<\/td>\n<td>2.92<\/td>\n<td>3.52<\/td>\n<td>4.3<\/td>\n<td>5.7<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"4\">Recesso Cruzado<\/td>\n<td colspan=\"2\">Recesso n\u00ba<\/td>\n<td>1<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<td>3<\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Profundidade de penetra\u00e7\u00e3o<\/td>\n<td>m\u00e1ximo<\/td>\n<td>1.55<\/td>\n<td>1.43<\/td>\n<td>1.9<\/td>\n<td>2.4<\/td>\n<td>2.9<\/td>\n<td>3.6<\/td>\n<td>4.6<\/td>\n<\/tr>\n<tr>\n<td>min<\/td>\n<td>1.15<\/td>\n<td>0.86<\/td>\n<td>1.4<\/td>\n<td>1.9<\/td>\n<td>2.4<\/td>\n<td>3.1<\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">Largura m<\/td>\n<td>2.7<\/td>\n<td>3.5<\/td>\n<td>3.9<\/td>\n<td>4.4<\/td>\n<td>4.9<\/td>\n<td>6.9<\/td>\n<td>9<\/td>\n<\/tr>\n<tr>\n<td colspan=\"3\">Comprimento L<\/td>\n<td>6-25<\/td>\n<td>6-30<\/td>\n<td>6-60<\/td>\n<td>6-60<\/td>\n<td>8-60<\/td>\n<td>10-60<\/td>\n<td>12-40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Essas dimens\u00f5es garantem a compatibilidade; para comprimentos maiores, de at\u00e9 90 mm, consulte os fabricantes para produ\u00e7\u00e3o personalizada.<\/p>\n<h2>Especifica\u00e7\u00f5es dimensionais para GB9074.8<\/h2>\n<p>A norma GB9074.8 descreve as especifica\u00e7\u00f5es para parafusos combinados de cabe\u00e7a panela pequena com encaixe cruzado, com cabe\u00e7as menores e mais finas do que as da norma GB9074.4. Baseados na norma GB823, os comprimentos variam de 6 mm a 60 mm (padr\u00e3o), extens\u00edveis at\u00e9 90 mm. Observe as diferen\u00e7as no encaixe: o parafuso M5 utiliza o encaixe n\u00ba 3 na norma GB9074.8, enquanto na norma GB9074.4 utiliza o encaixe n\u00ba 2.<\/p>\n<div class=\"table-container\" style=\"overflow-x: auto; width: 100%;\">\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<th colspan=\"2\">Di\u00e2metro nominal d<\/th>\n<th>M2<\/th>\n<th>M3<\/th>\n<th>M4<\/th>\n<th>M5<\/th>\n<th>M6<\/th>\n<th>M8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td colspan=\"2\">Altura P<\/td>\n<td>0.4<\/td>\n<td>0.5<\/td>\n<td>0.7<\/td>\n<td>0.8<\/td>\n<td>1<\/td>\n<td>1.25<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">dk<\/td>\n<td>m\u00e1ximo<\/td>\n<td>3.5<\/td>\n<td>5.5<\/td>\n<td>7.0<\/td>\n<td>9.0<\/td>\n<td>10.5<\/td>\n<td>14.0<\/td>\n<\/tr>\n<tr>\n<td>min<\/td>\n<td>3.2<\/td>\n<td>5.2<\/td>\n<td>6.64<\/td>\n<td>8.64<\/td>\n<td>10.07<\/td>\n<td>13.57<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">k<\/td>\n<td>m\u00e1ximo<\/td>\n<td>1.4<\/td>\n<td>2.15<\/td>\n<td>2.75<\/td>\n<td>3.45<\/td>\n<td>4.1<\/td>\n<td>5.4<\/td>\n<\/tr>\n<tr>\n<td>min<\/td>\n<td>1.26<\/td>\n<td>2.01<\/td>\n<td>2.61<\/td>\n<td>3.27<\/td>\n<td>3.8<\/td>\n<td>5.1<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">Recesso n\u00ba<\/td>\n<td>1<\/td>\n<td colspan=\"2\">2<\/td>\n<td colspan=\"3\">3<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">Comprimento L<\/td>\n<td>6-25<\/td>\n<td>6-30<\/td>\n<td>6-60<\/td>\n<td>8-60<\/td>\n<td>10-60<\/td>\n<td>12-40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Selecione com base nas restri\u00e7\u00f5es de espa\u00e7o; verifique a compatibilidade do recesso com os drivers.<\/p>\n<h2>Especifica\u00e7\u00f5es dimensionais para GB9074.13<\/h2>\n<p>A norma GB9074.13 descreve parafusos combinados com cabe\u00e7a sextavada e encaixe cruzado, que combinam encaixes sextavados e cruzados conforme a norma GB29.2. Os comprimentos variam de 6 mm a 50 mm, adequados para tarefas que exigem alto torque.<\/p>\n<div class=\"table-container\" style=\"overflow-x: auto; width: 100%;\">\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<th colspan=\"2\">Di\u00e2metro nominal d<\/th>\n<th>M4<\/th>\n<th>M5<\/th>\n<th>M6<\/th>\n<th>M8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td colspan=\"2\">Altura p<\/td>\n<td>0.7<\/td>\n<td>0.8<\/td>\n<td>1<\/td>\n<td>1.25<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"3\">k<\/td>\n<td>Nominal<\/td>\n<td>2.8<\/td>\n<td>3.5<\/td>\n<td>4<\/td>\n<td>5.3<\/td>\n<\/tr>\n<tr>\n<td>m\u00e1ximo<\/td>\n<td>3<\/td>\n<td>3.74<\/td>\n<td>4.24<\/td>\n<td>5.54<\/td>\n<\/tr>\n<tr>\n<td>min<\/td>\n<td>2.6<\/td>\n<td>3.26<\/td>\n<td>3.76<\/td>\n<td>5.06<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">dk<\/td>\n<td>m\u00e1ximo<\/td>\n<td>7<\/td>\n<td>8<\/td>\n<td>10<\/td>\n<td>13<\/td>\n<\/tr>\n<tr>\n<td>min<\/td>\n<td>6.64<\/td>\n<td>7.64<\/td>\n<td>9.64<\/td>\n<td>12.57<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">Comprimento L<\/td>\n<td>6-40<\/td>\n<td>10-40<\/td>\n<td>10-50<\/td>\n<td>12-40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Essas op\u00e7\u00f5es oferecem acionamento duplo, aumentando a flexibilidade de instala\u00e7\u00e3o.<\/p>\n<h2>Especifica\u00e7\u00f5es para arruelas (GB9074.26, GB9074.24, GB97.4)<\/h2>\n<p>As arruelas s\u00e3o integrais: GB9074.26 para arruelas de press\u00e3o, GB9074.24 para arruelas planas (padr\u00e3o) e GB97.4, que oferece varia\u00e7\u00f5es em s\u00e9rie (pequena, padr\u00e3o e grande).<\/p>\n<h3>Arruela de press\u00e3o GB9074.26<\/h3>\n<div class=\"table-container\" style=\"overflow-x: auto; width: 100%;\">\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<th>Tamanho<\/th>\n<th colspan=\"2\">d<\/th>\n<th colspan=\"2\">s<\/th>\n<th colspan=\"2\">b<\/th>\n<th colspan=\"2\">h<\/th>\n<\/tr>\n<tr>\n<th><\/th>\n<th>min<\/th>\n<th>m\u00e1ximo<\/th>\n<th>min<\/th>\n<th>m\u00e1ximo<\/th>\n<th>min<\/th>\n<th>m\u00e1ximo<\/th>\n<th>min<\/th>\n<th>m\u00e1ximo<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>2.5<\/td>\n<td>2.2<\/td>\n<td>2.34<\/td>\n<td>0.52<\/td>\n<td>0.68<\/td>\n<td>0.9<\/td>\n<td>1.1<\/td>\n<td>1.2<\/td>\n<td>1.5<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>2.69<\/td>\n<td>2.83<\/td>\n<td>0.7<\/td>\n<td>0.9<\/td>\n<td>1.1<\/td>\n<td>1.3<\/td>\n<td>1.6<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>3.6<\/td>\n<td>3.78<\/td>\n<td>1<\/td>\n<td>1.2<\/td>\n<td>1.4<\/td>\n<td>1.6<\/td>\n<td>2.2<\/td>\n<td>2.75<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>4.45<\/td>\n<td>4.75<\/td>\n<td>1.2<\/td>\n<td>1.4<\/td>\n<td>1.9<\/td>\n<td>2.1<\/td>\n<td>2.6<\/td>\n<td>3.25<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>5.41<\/td>\n<td>5.71<\/td>\n<td>1.5<\/td>\n<td>1.7<\/td>\n<td>2.35<\/td>\n<td>2.65<\/td>\n<td>3.2<\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>7.28<\/td>\n<td>7.64<\/td>\n<td>1.9<\/td>\n<td>2.1<\/td>\n<td>2.85<\/td>\n<td>3.15<\/td>\n<td>4<\/td>\n<td>5<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>9.23<\/td>\n<td>9.59<\/td>\n<td>2.35<\/td>\n<td>2.65<\/td>\n<td>3.3<\/td>\n<td>3.7<\/td>\n<td>5<\/td>\n<td>6.25<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>11.1<\/td>\n<td>11.53<\/td>\n<td>2.85<\/td>\n<td>3.15<\/td>\n<td>3.8<\/td>\n<td>4.2<\/td>\n<td>6<\/td>\n<td>7.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Arruela plana GB9074.24<\/h3>\n<div class=\"table-container\" style=\"overflow-x: auto; width: 100%;\">\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<th rowspan=\"3\">d<\/th>\n<th>Nominal<\/th>\n<th>2.5<\/th>\n<th>3<\/th>\n<th>4<\/th>\n<th>5<\/th>\n<th>6<\/th>\n<th>8<\/th>\n<th>10<\/th>\n<th>12<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td rowspan=\"2\">Di\u00e2metro interno<\/td>\n<td>m\u00e1ximo<\/td>\n<td>2.34<\/td>\n<td>2.83<\/td>\n<td>3.78<\/td>\n<td>4.75<\/td>\n<td>5.71<\/td>\n<td>7.64<\/td>\n<td>9.59<\/td>\n<td>11.53<\/td>\n<\/tr>\n<tr>\n<td>min<\/td>\n<td>2.24<\/td>\n<td>2.73<\/td>\n<td>3.66<\/td>\n<td>4.57<\/td>\n<td>5.53<\/td>\n<td>7.42<\/td>\n<td>9.37<\/td>\n<td>11.26<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Di\u00e2metro externo d1<\/td>\n<td>m\u00e1ximo<\/td>\n<td>6<\/td>\n<td>7<\/td>\n<td>9<\/td>\n<td>10<\/td>\n<td>12<\/td>\n<td>16<\/td>\n<td>20<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<td>min<\/td>\n<td>5.7<\/td>\n<td>6.64<\/td>\n<td>8.64<\/td>\n<td>9.64<\/td>\n<td>11.57<\/td>\n<td>15.57<\/td>\n<td>19.48<\/td>\n<td>23.48<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"3\">Espessura h<\/td>\n<td>Nominal<\/td>\n<td>0.5<\/td>\n<td>0.5<\/td>\n<td>0.8<\/td>\n<td>1<\/td>\n<td>1.6<\/td>\n<td>2<\/td>\n<td>2.5<\/td>\n<td>3<\/td>\n<\/tr>\n<tr>\n<td>m\u00e1ximo<\/td>\n<td>0.55<\/td>\n<td>0.55<\/td>\n<td>0.9<\/td>\n<td>1.1<\/td>\n<td>1.8<\/td>\n<td>2.2<\/td>\n<td>2.7<\/td>\n<td>3.3<\/td>\n<\/tr>\n<tr>\n<td>min<\/td>\n<td>0.45<\/td>\n<td>0.45<\/td>\n<td>0.7<\/td>\n<td>0.9<\/td>\n<td>1.4<\/td>\n<td>1.8<\/td>\n<td>2.3<\/td>\n<td>2.7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Arruela plana GB97.4<\/h3>\n<div class=\"table-container\" style=\"overflow-x: auto; width: 100%;\">\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<th rowspan=\"4\">Fio d<\/th>\n<th colspan=\"2\">S\u00e9ries pequenas<\/th>\n<th colspan=\"2\">S\u00e9rie Padr\u00e3o<\/th>\n<th colspan=\"2\">S\u00e9rie Grande<\/th>\n<\/tr>\n<tr>\n<th>h Nominal<\/th>\n<th>d1 m\u00e1x.<\/th>\n<th>h Nominal<\/th>\n<th>d1 m\u00e1x.<\/th>\n<th>h Nominal<\/th>\n<th>d1 m\u00e1x.<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M2<\/td>\n<td>0.6<\/td>\n<td>4.5<\/td>\n<td>0.6<\/td>\n<td>5<\/td>\n<td>0.6<\/td>\n<td>6<\/td>\n<\/tr>\n<tr>\n<td>M2.5<\/td>\n<td>0.6<\/td>\n<td>5<\/td>\n<td>0.6<\/td>\n<td>6<\/td>\n<td>0.6<\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>M3<\/td>\n<td>0.6<\/td>\n<td>6<\/td>\n<td>0.6<\/td>\n<td>7<\/td>\n<td>0.8<\/td>\n<td>9<\/td>\n<\/tr>\n<tr>\n<td>M3.5<\/td>\n<td>0.8<\/td>\n<td>7<\/td>\n<td>0.8<\/td>\n<td>8<\/td>\n<td>0.8<\/td>\n<td>11<\/td>\n<\/tr>\n<tr>\n<td>M4<\/td>\n<td>0.8<\/td>\n<td>8<\/td>\n<td>0.8<\/td>\n<td>9<\/td>\n<td>1<\/td>\n<td>12<\/td>\n<\/tr>\n<tr>\n<td>M5<\/td>\n<td>1<\/td>\n<td>9<\/td>\n<td>1<\/td>\n<td>10<\/td>\n<td>1<\/td>\n<td>15<\/td>\n<\/tr>\n<tr>\n<td>M6<\/td>\n<td>1.6<\/td>\n<td>11<\/td>\n<td>1.6<\/td>\n<td>12<\/td>\n<td>1.6<\/td>\n<td>18<\/td>\n<\/tr>\n<tr>\n<td>M8<\/td>\n<td>1.6<\/td>\n<td>15<\/td>\n<td>1.6<\/td>\n<td>16<\/td>\n<td>2<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<td>M10<\/td>\n<td>2<\/td>\n<td>18<\/td>\n<td>2<\/td>\n<td>20<\/td>\n<td>2.5<\/td>\n<td>30<\/td>\n<\/tr>\n<tr>\n<td>M12<\/td>\n<td>2<\/td>\n<td>20<\/td>\n<td>2.5<\/td>\n<td>24<\/td>\n<td>3<\/td>\n<td>37<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Especifique a s\u00e9rie para GB97.4; o padr\u00e3o \u00e9 GB9074.24 para aplica\u00e7\u00f5es padr\u00e3o.<\/p>\n<h2>Materiais e composi\u00e7\u00f5es qu\u00edmicas<\/h2>\n<p>Os materiais incluem a\u00e7os inoxid\u00e1veis \u200b\u200bSUS304 e SUS316 para resist\u00eancia \u00e0 corros\u00e3o e a\u00e7os carbono (1010, 1018, 10B21) para resist\u00eancia mec\u00e2nica, com graus 4.8 e 8.8. O a\u00e7o carbono requer t\u00eampera, desidrogena\u00e7\u00e3o e revestimento, ao contr\u00e1rio do a\u00e7o inoxid\u00e1vel, que precisa apenas de limpeza.<\/p>\n<div class=\"table-container\" style=\"overflow-x: auto; width: 100%;\">\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<th>Material<\/th>\n<th>C (%)<\/th>\n<th>Mn (%)<\/th>\n<th>Si (%)<\/th>\n<th>P (%)<\/th>\n<th>S (%)<\/th>\n<th>Ni (%)<\/th>\n<th>Mo (%)<\/th>\n<th>Cr (%)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A\u00e7o inoxid\u00e1vel SUS304<\/td>\n<td>\u22640,08<\/td>\n<td>\u22642,00<\/td>\n<td>\u22641,00<\/td>\n<td>\u22640,045<\/td>\n<td>\u22640,03<\/td>\n<td>8.00-11.00<\/td>\n<td>–<\/td>\n<td>17.00-19.00<\/td>\n<\/tr>\n<tr>\n<td>A\u00e7o inoxid\u00e1vel SUS316<\/td>\n<td>\u22640,08<\/td>\n<td>\u22642,00<\/td>\n<td>\u22641,00<\/td>\n<td>\u22640,045<\/td>\n<td>\u22640,03<\/td>\n<td>10.00-14.00<\/td>\n<td>2.00-3.00<\/td>\n<td>16.00-18.00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>O a\u00e7o SUS316 se destaca em ambientes marinhos; o a\u00e7o carbono, com o tratamento adequado, \u00e9 adequado para cen\u00e1rios de alta carga.<\/p>\n<h2>Caracter\u00edsticas de desempenho<\/h2>\n<p>Os parafusos combinados de a\u00e7o inoxid\u00e1vel geralmente atingem o desempenho A2-70 ou A4-70, com resist\u00eancia \u00e0 tra\u00e7\u00e3o em torno de 700 MPa e limite de escoamento de 450 MPa. As variantes de a\u00e7o carbono atingem 4.8 (400 MPa de resist\u00eancia \u00e0 tra\u00e7\u00e3o) ou 8.8 (800 MPa). A arruela de press\u00e3o proporciona travamento, resistindo \u00e0 vibra\u00e7\u00e3o conforme testes padr\u00e3o.<\/p>\n<h2>Vantagens e aplica\u00e7\u00f5es<\/h2>\n<p>As vantagens incluem pr\u00e9-montagem para maior efici\u00eancia, resist\u00eancia ao afrouxamento e \u00e0 corros\u00e3o. Aplica\u00e7\u00f5es: GB9074.4\/8 em eletr\u00f4nica e comunica\u00e7\u00f5es; GB9074.13 em ferrovias, pontes e constru\u00e7\u00e3o civil para necessidades de alta resist\u00eancia.<\/p>\n<h2>Considera\u00e7\u00f5es sobre instala\u00e7\u00e3o e fabrica\u00e7\u00e3o<\/h2>\n<p>Instale com os parafusos apropriados, garantindo que as arruelas se encaixem corretamente. Para a\u00e7o carbono, aplicam-se quantidades m\u00ednimas de encomenda devido ao processo de fabrica\u00e7\u00e3o. A produ\u00e7\u00e3o em a\u00e7o inoxid\u00e1vel \u00e9 otimizada, ideal para prazos de entrega r\u00e1pidos.<\/p>\n<h2>Perguntas frequentes (FAQ)<\/h2>\n<div class=\"faq\">\n<p><q>O que distingue a norma GB9074.4 da GB9074.8?<\/q>A norma GB9074.4 possui cabe\u00e7as maiores e mais espessas para melhor distribui\u00e7\u00e3o da carga; a norma GB9074.8 apresenta cabe\u00e7as menores para espa\u00e7os compactos, com tamanhos de recesso diferentes para M5 (n\u00ba 2 vs. n\u00ba 3).<\/p>\n<p><q>Quando escolher o a\u00e7o inoxid\u00e1vel SUS316 em vez do SUS304?<\/q><\/p>\n<p>Opte pelo a\u00e7o inoxid\u00e1vel SUS316 em ambientes corrosivos, como ambientes marinhos ou com exposi\u00e7\u00e3o a produtos qu\u00edmicos, devido ao seu teor de molibd\u00eanio, que aumenta a resist\u00eancia \u00e0 corros\u00e3o por pite.<\/p>\n<p><q>Os comprimentos podem exceder os intervalos padr\u00e3o?<\/q><\/p>\n<p>Sim, comprimentos personalizados de at\u00e9 90 mm s\u00e3o poss\u00edveis, embora o padr\u00e3o seja de 6 a 60 mm; especifique para verificar a viabilidade de fabrica\u00e7\u00e3o.<\/p>\n<p><q>Qual s\u00e9rie de arruelas devo selecionar para GB97.4?<\/q><\/p>\n<p>Escolha o tamanho pequeno para espa\u00e7os reduzidos, o tamanho padr\u00e3o para uso geral e o tamanho grande para distribui\u00e7\u00e3o ampla de carga; o padr\u00e3o \u00e9 GB9074.24, a menos que seja especificado.<\/p>\n<p><q>Como o processamento do a\u00e7o carbono difere do processamento do a\u00e7o inoxid\u00e1vel?<\/q><\/p>\n<p>O a\u00e7o carbono requer t\u00eampera, desidrogena\u00e7\u00e3o e revestimento para garantir durabilidade, enquanto o a\u00e7o inoxid\u00e1vel precisa apenas de limpeza, tornando sua produ\u00e7\u00e3o mais simples e r\u00e1pida.<\/p>\n<p><q>Esses parafusos s\u00e3o adequados para aplica\u00e7\u00f5es com alta vibra\u00e7\u00e3o?<\/q><\/p>\n<p>Sim, a arruela de press\u00e3o integrada proporciona um travamento eficaz; teste conforme as normas para perfis de vibra\u00e7\u00e3o espec\u00edficos.<\/p>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Introdu\u00e7\u00e3o aos Parafusos Combinados Os parafusos combinados, conforme definidos na s\u00e9rie GB 9074, s\u00e3o conjuntos de fixa\u00e7\u00e3o integrados compostos por um parafuso, uma arruela de press\u00e3o e uma arruela plana. Essas normas garantem uniformidade no projeto, dimens\u00f5es e desempenho para uso confi\u00e1vel em aplica\u00e7\u00f5es mec\u00e2nicas e el\u00e9tricas. A norma GB9074.4 abrange parafusos de cabe\u00e7a panela com rebaixo cruzado e arruelas, a norma GB9074.8 aborda parafusos de cabe\u00e7a panela com rebaixo cruzado e arruelas, a norma GB9074.8 aborda parafusos de cabe\u00e7a panela com rebaixo cruzado e arruelas, a norma GB9074.9 aborda parafusos de cabe\u00e7a panela com rebaixo cruzado e arruelas, a norma GB9074.1 aborda parafusos de cabe\u00e7a panela com rebaixo cruzado e arruelas planas.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5854","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts\/5854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/comments?post=5854"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts\/5854\/revisions"}],"predecessor-version":[{"id":5856,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts\/5854\/revisions\/5856"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/media?parent=5854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/categories?post=5854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/tags?post=5854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}