{"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>Introduction to Combination Screws Combination screws, as defined in the GB 9074 series, are integrated fastening assemblies consisting of a screw, spring washer, and flat washer. These standards ensure uniformity in design, dimensions, and performance for reliable use in mechanical and electrical applications. GB9074.4 covers cross recessed pan head screws with washers, GB9074.8 addresses cross [&hellip;]<\/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}]}}