{"id":21317,"date":"2026-10-08T12:18:55","date_gmt":"2026-10-08T04:18:55","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=21317"},"modified":"2026-10-16T16:22:58","modified_gmt":"2026-10-16T08:22:58","slug":"tool-steel-band-sawing-speeds","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/tool-steel-band-sawing-speeds\/","title":{"rendered":"A\u00e7o Ferramenta para Serra de Fita, Velocidades de Corte e de Contorno"},"content":{"rendered":"<h1 class=\"wp-block-heading\">A\u00e7o Ferramenta para Serra de Fita, Velocidades de Corte e de Contorno<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A serragem \u00e9 como uma barra de a\u00e7o ferramenta \u00e9 cortada no comprimento e como um bloco de matriz \u00e9 desbastado antes de qualquer outra usinagem. Uma serra de fita faz isso com uma l\u00e2mina fina e cont\u00ednua, e as velocidades publicadas para a\u00e7os ferramenta s\u00e3o definidas grau por grau, e n\u00e3o para o a\u00e7o ferramenta como um \u00fanico material. As tabelas abaixo apresentam essas velocidades para serragem de corte e para serragem de contorno, com os materiais de l\u00e2mina e as larguras de fita correspondentes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">O que uma serra de fita corta<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uma serra de fita motorizada funciona melhor na faixa de dureza de cerca de 180 a 250 HB. A\u00e7os at\u00e9 cerca de 400 HB, e alguns a\u00e7os de corte f\u00e1cil at\u00e9 450 HB, ainda podem ser serrados, mas apenas com taxas de corte reduzidas. A serragem com fita usa uma l\u00e2mina mais fina do que a serra manual ou a serra circular e corta um kerf de cerca de 1,6 mm (1\/16 pol.) contra 7,9 e 9,5 mm para as outras duas, de modo que menos pot\u00eancia \u00e9 necess\u00e1ria e menos material \u00e9 transformado em cavacos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Em uma m\u00e1quina de contorno, a l\u00e2mina tamb\u00e9m pode seguir uma forma em vez de uma linha reta, raz\u00e3o pela qual uma serra de fita \u00e9 frequentemente usada para desbastar o contorno de uma matriz em se\u00e7\u00f5es em vez de fres\u00e1-lo. As velocidades a seguir s\u00e3o pontos de partida da pr\u00e1tica publicada, e o grau do a\u00e7o e a espessura da se\u00e7\u00e3o ambos as alteram.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Velocidades de serragem de corte com fita por grau<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na serragem de corte, a fita faz apenas um corte reto, e a tabela de origem \u00e9 baseada em uma fita de a\u00e7o r\u00e1pido de 25 mm (1 pol.) de largura cortando tarugos redondos sem carepa de 75 a 125 mm (3 a 5 pol.) de di\u00e2metro. Ela se aplica a barras maci\u00e7as de at\u00e9 450 mm (18 pol.) de espessura. Carepa pesada na pe\u00e7a exige uma velocidade de fita mais baixa e uma taxa de corte mais baixa, e encurta a vida da fita, especialmente quando material fino est\u00e1 sendo cortado.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Grau<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza, HB<\/th><th class=\"has-text-align-left\" data-align=\"left\">Velocidade da fita, m\/min (sfm)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Taxa de corte, mm<sup>2<\/sup> x 10<sup>3<\/sup>\/min (pol.<sup>2<\/sup>\/min)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Vida da fita, mm<sup>2<\/sup> x 10<sup>6<\/sup> (pol.<sup>2<\/sup> x 10<sup>3<\/sup>)<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">W1<\/td><td class=\"has-text-align-left\" data-align=\"left\">155-195<\/td><td class=\"has-text-align-left\" data-align=\"left\">67-55 (220-180)<\/td><td class=\"has-text-align-left\" data-align=\"left\">3.9-3.2 (6-5)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.9 (3.0)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">S2, S5<\/td><td class=\"has-text-align-left\" data-align=\"left\">175-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">45-33 (150-110)<\/td><td class=\"has-text-align-left\" data-align=\"left\">2.6-1.9 (4-3)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.0 (1.5)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">O1, O2<\/td><td class=\"has-text-align-left\" data-align=\"left\">190-205<\/td><td class=\"has-text-align-left\" data-align=\"left\">65-55 (210-180)<\/td><td class=\"has-text-align-left\" data-align=\"left\">3.9-2.6 (6-4)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.6 (2.5)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">A2<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">60-52 (200-170)<\/td><td class=\"has-text-align-left\" data-align=\"left\">2.6-1.9 (4-3)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.5 (2.3)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">D2, D3<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">37-27 (120-90)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.9-1.3 (3-2)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.0 (1.5)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">D7<\/td><td class=\"has-text-align-left\" data-align=\"left\">230-255<\/td><td class=\"has-text-align-left\" data-align=\"left\">27-18 (90-60)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.3-0.6 (2-1)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.55 (0.85)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">H12, H13, H21<\/td><td class=\"has-text-align-left\" data-align=\"left\">205-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">58-49 (190-160)<\/td><td class=\"has-text-align-left\" data-align=\"left\">3.2-2.6 (5-4)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.3 (2.0)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">T1, T2<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-250<\/td><td class=\"has-text-align-left\" data-align=\"left\">40-30 (130-100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">2.3-1.3 (3.5-2)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.1 (1.7)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">T6, T8<\/td><td class=\"has-text-align-left\" data-align=\"left\">220-295<\/td><td class=\"has-text-align-left\" data-align=\"left\">30-21 (100-70)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.6-0.6 (2.5-1)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.7 (1.2)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">T15<\/td><td class=\"has-text-align-left\" data-align=\"left\">230-255<\/td><td class=\"has-text-align-left\" data-align=\"left\">23-15 (75-50)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.3-0.6 (2-1)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.6 (1.0)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">M1<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">45-37 (150-120)<\/td><td class=\"has-text-align-left\" data-align=\"left\">3.2-1.9 (5-3)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.1 (1.7)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">M2, M3<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">33-24 (110-80)<\/td><td class=\"has-text-align-left\" data-align=\"left\">2.6-1.3 (4-2)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.0 (1.5)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">M4, M10, M15<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">27-18 (90-60)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.6-0.6 (2.5-1)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.7 (1.2)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">L6<\/td><td class=\"has-text-align-left\" data-align=\"left\">190-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">55-49 (180-160)<\/td><td class=\"has-text-align-left\" data-align=\"left\">3.9-2.6 (6-4)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.6 (2.5)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Serragem de corte com fita de a\u00e7os ferramenta, reproduzida da Tabela 4 de Sawing, no ASM Handbook, Volume 16, Machining. Os dados de origem s\u00e3o baseados em uma fita de a\u00e7o r\u00e1pido de 25 mm (1 pol.) de largura com forma de dente regular, exceto forma de dente gancho em metal mais espesso que cerca de 250 mm (10 pol.), travamento raker, cortando barras maci\u00e7as sem carepa de at\u00e9 460 mm (18 pol.) de espessura com fluido de corte. D2, D3 e D7 s\u00e3o cortados a seco. A vida da fita \u00e9 dada para uma fita de 3 m (10 p\u00e9s) e \u00e9 proporcional para outros comprimentos de fita.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A varia\u00e7\u00e3o entre os graus \u00e9 o ponto central da tabela. W1 e O1, os graus de baixa liga temperados em \u00e1gua e em \u00f3leo, serram a 67 a 55 m\/min (220 a 180 sfm). D2 e D3 caem para 37 a 27 m\/min (120 a 90 sfm) e D7 para 27 a 18 m\/min (90 a 60 sfm), e os tr\u00eas s\u00e3o cortados a seco em vez de com fluido. Os graus de a\u00e7o r\u00e1pido ficam entre os dois extremos, e T15 \u00e9 o mais lento de todo o grupo, a 23 a 15 m\/min (75 a 50 sfm).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A vida da fita segue a mesma ordem e \u00e9 citada para uma fita de 3 m (10 p\u00e9s). W1 e O1 retornam cerca de 1,9 e 1,6 metros quadrados de \u00e1rea de corte, D2 e D3 cerca de 1,0, e D7 apenas 0,55. Uma oficina que corta D7 todos os dias trocar\u00e1 fitas v\u00e1rias vezes mais frequentemente do que uma que corta W1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Velocidades de serragem de contorno com fita por grau e espessura<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A serragem de contorno segue uma forma, e a velocidade \u00e9 definida pela espessura da se\u00e7\u00e3o sendo cortada, bem como pelo grau. Os mesmos graus s\u00e3o listados em tr\u00eas faixas de espessura, primeiro com fitas de a\u00e7o carbono e depois com fitas de a\u00e7o r\u00e1pido, e a tabela deixa clara a vantagem da fita de a\u00e7o r\u00e1pido. Na faixa fina, W1 passa de 45 m\/min (150 sfm) para 82 m\/min (270 sfm), e O1 de 45 para 80 m\/min.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fitas de a\u00e7o carbono s\u00e3o recomendadas para serragem de contorno de a\u00e7o ferramenta apenas nos graus mais macios e apenas onde a m\u00e1quina n\u00e3o tem a pot\u00eancia e o fornecimento de fluido para uma fita de a\u00e7o r\u00e1pido. Nos graus mais duros, os valores das fitas de carbono caem, e os graus D j\u00e1 est\u00e3o em 30 m\/min (100 sfm) na faixa fina.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Fitas de a\u00e7o carbono<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Grau<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza, HB<\/th><th class=\"has-text-align-left\" data-align=\"left\">6,4-13 mm (1\/4-1\/2 pol.)<\/th><th class=\"has-text-align-left\" data-align=\"left\">25-75 mm (1-3 pol.)<\/th><th class=\"has-text-align-left\" data-align=\"left\">150-300 mm (6-12 pol.)<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">W1<\/td><td class=\"has-text-align-left\" data-align=\"left\">155-195<\/td><td class=\"has-text-align-left\" data-align=\"left\">45 (150)<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">S2, S5<\/td><td class=\"has-text-align-left\" data-align=\"left\">175-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">24 (80)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">O1, O2<\/td><td class=\"has-text-align-left\" data-align=\"left\">185-205<\/td><td class=\"has-text-align-left\" data-align=\"left\">45 (150)<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">A2<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">50 (170)<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">20 (65)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">D2, D3<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">18 (60)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">D7<\/td><td class=\"has-text-align-left\" data-align=\"left\">230-255<\/td><td class=\"has-text-align-left\" data-align=\"left\">24 (80)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">H12, H13, H21<\/td><td class=\"has-text-align-left\" data-align=\"left\">205-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">18 (60)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">T6, T8<\/td><td class=\"has-text-align-left\" data-align=\"left\">220-295<\/td><td class=\"has-text-align-left\" data-align=\"left\">27 (90)<\/td><td class=\"has-text-align-left\" data-align=\"left\">17 (55)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">M4, M10, M15<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">27 (90)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">L6<\/td><td class=\"has-text-align-left\" data-align=\"left\">190-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">20 (65)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Serragem de contorno com fita de a\u00e7os ferramenta por espessura do material, reproduzida da Tabela 7 de Sawing, no ASM Handbook, Volume 16, Machining. As velocidades est\u00e3o em m\/min com sfm entre par\u00eanteses. Os valores das fitas de a\u00e7o carbono usam forma de dente regular com passo 14 e for\u00e7a de avan\u00e7o m\u00ednima para a faixa fina, forma de dente regular com passo 6 a 8 e for\u00e7a de avan\u00e7o m\u00e9dia para a faixa m\u00e9dia, e forma de dente gancho com passo 3 e for\u00e7a de avan\u00e7o m\u00e1xima para a faixa espessa. Os valores das fitas de a\u00e7o r\u00e1pido tamb\u00e9m s\u00e3o adequados para fitas de a\u00e7o r\u00e1pido de borda soldada, e usam forma de dente regular com passo 10 e for\u00e7a de avan\u00e7o m\u00ednima, depois forma de dente regular com passo 6 e for\u00e7a de avan\u00e7o m\u00e9dia, depois forma de dente gancho com passo 3 e for\u00e7a de avan\u00e7o m\u00e1xima. D2, D3 e D7 s\u00e3o serrados a seco, e os graus com nota de rodap\u00e9 na fonte operam com a for\u00e7a de avan\u00e7o mais pesada para cada faixa.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Fitas de a\u00e7o r\u00e1pido<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Grau<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza, HB<\/th><th class=\"has-text-align-left\" data-align=\"left\">6,4-13 mm (1\/4-1\/2 pol.)<\/th><th class=\"has-text-align-left\" data-align=\"left\">25-75 mm (1-3 pol.)<\/th><th class=\"has-text-align-left\" data-align=\"left\">150-300 mm (6-12 pol.)<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">W1<\/td><td class=\"has-text-align-left\" data-align=\"left\">155-195<\/td><td class=\"has-text-align-left\" data-align=\"left\">82 (270)<\/td><td class=\"has-text-align-left\" data-align=\"left\">55 (180)<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">S2, S5<\/td><td class=\"has-text-align-left\" data-align=\"left\">175-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">58 (190)<\/td><td class=\"has-text-align-left\" data-align=\"left\">37 (120)<\/td><td class=\"has-text-align-left\" data-align=\"left\">18 (60)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">O1, O2<\/td><td class=\"has-text-align-left\" data-align=\"left\">185-205<\/td><td class=\"has-text-align-left\" data-align=\"left\">80 (260)<\/td><td class=\"has-text-align-left\" data-align=\"left\">55 (180)<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">A2<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">76 (250)<\/td><td class=\"has-text-align-left\" data-align=\"left\">53 (175)<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">D2, D3<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">45 (150)<\/td><td class=\"has-text-align-left\" data-align=\"left\">30 (100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">D7<\/td><td class=\"has-text-align-left\" data-align=\"left\">230-255<\/td><td class=\"has-text-align-left\" data-align=\"left\">33 (110)<\/td><td class=\"has-text-align-left\" data-align=\"left\">21 (70)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">H12, H13, H21<\/td><td class=\"has-text-align-left\" data-align=\"left\">205-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">73 (240)<\/td><td class=\"has-text-align-left\" data-align=\"left\">49 (160)<\/td><td class=\"has-text-align-left\" data-align=\"left\">27 (90)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">T6, T8<\/td><td class=\"has-text-align-left\" data-align=\"left\">220-295<\/td><td class=\"has-text-align-left\" data-align=\"left\">38 (125)<\/td><td class=\"has-text-align-left\" data-align=\"left\">24 (80)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">M4, M10, M15<\/td><td class=\"has-text-align-left\" data-align=\"left\">215-240<\/td><td class=\"has-text-align-left\" data-align=\"left\">33 (110)<\/td><td class=\"has-text-align-left\" data-align=\"left\">21 (70)<\/td><td class=\"has-text-align-left\" data-align=\"left\">15 (50)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">L6<\/td><td class=\"has-text-align-left\" data-align=\"left\">190-230<\/td><td class=\"has-text-align-left\" data-align=\"left\">70 (230)<\/td><td class=\"has-text-align-left\" data-align=\"left\">49 (160)<\/td><td class=\"has-text-align-left\" data-align=\"left\">27 (90)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Material da fita e sele\u00e7\u00e3o da l\u00e2mina<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As fitas s\u00e3o de a\u00e7o carbono ou bimet\u00e1licas. O tipo bimet\u00e1lico, ou composto, possui uma aresta de corte de a\u00e7o r\u00e1pido soldada a um dorso de a\u00e7o de alta resist\u00eancia \u00e0 tra\u00e7\u00e3o, e essas fitas de borda soldada substitu\u00edram tanto as fitas de a\u00e7o carbono quanto as antigas fitas maci\u00e7as de a\u00e7o r\u00e1pido em m\u00e1quinas de produ\u00e7\u00e3o. A aresta de corte de uma fita de borda soldada \u00e9 geralmente de a\u00e7o r\u00e1pido M2, Matrix 2 ou M42, e os tr\u00eas s\u00e3o escolhidos pelo trabalho, e n\u00e3o pela m\u00e1quina.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\" rowspan=\"2\">Fita<\/th><th class=\"has-text-align-left\" data-align=\"left\" colspan=\"8\">Composi\u00e7\u00e3o, %<\/th><th class=\"has-text-align-left\" data-align=\"left\" rowspan=\"2\">Resist\u00eancia ao calor, &deg;C (&deg;F)<\/th><th class=\"has-text-align-left\" data-align=\"left\" colspan=\"2\">Dureza, HRC<\/th><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">C<\/th><th class=\"has-text-align-left\" data-align=\"left\">Si<\/th><th class=\"has-text-align-left\" data-align=\"left\">Mn<\/th><th class=\"has-text-align-left\" data-align=\"left\">Cr<\/th><th class=\"has-text-align-left\" data-align=\"left\">V<\/th><th class=\"has-text-align-left\" data-align=\"left\">W<\/th><th class=\"has-text-align-left\" data-align=\"left\">Mo<\/th><th class=\"has-text-align-left\" data-align=\"left\">Co<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dentes<\/th><th class=\"has-text-align-left\" data-align=\"left\">Corpo<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Fita de borda soldada de a\u00e7o r\u00e1pido M-2<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.79-0.86<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.25<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.35<\/td><td class=\"has-text-align-left\" data-align=\"left\">4.25<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.95<\/td><td class=\"has-text-align-left\" data-align=\"left\">6.50<\/td><td class=\"has-text-align-left\" data-align=\"left\">5.00<\/td><td class=\"has-text-align-left\" data-align=\"left\">. . .<\/td><td class=\"has-text-align-left\" data-align=\"left\">540 (1000)<\/td><td class=\"has-text-align-left\" data-align=\"left\">64-66<\/td><td class=\"has-text-align-left\" data-align=\"left\">40-47<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Serra de fita Matrix 2<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.70-0.78<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.30<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.25<\/td><td class=\"has-text-align-left\" data-align=\"left\">4.25<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.00<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.00<\/td><td class=\"has-text-align-left\" data-align=\"left\">5.00<\/td><td class=\"has-text-align-left\" data-align=\"left\">8.00<\/td><td class=\"has-text-align-left\" data-align=\"left\">590 (1100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">65-67<\/td><td class=\"has-text-align-left\" data-align=\"left\">40-47<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Serra de fita Cobalt M-42<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.05-1.10<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.25<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.25<\/td><td class=\"has-text-align-left\" data-align=\"left\">3.75<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.15<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.50<\/td><td class=\"has-text-align-left\" data-align=\"left\">9.50<\/td><td class=\"has-text-align-left\" data-align=\"left\">8.00<\/td><td class=\"has-text-align-left\" data-align=\"left\">700 (1300)<\/td><td class=\"has-text-align-left\" data-align=\"left\">67-69<\/td><td class=\"has-text-align-left\" data-align=\"left\">40-47<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Composi\u00e7\u00e3o da l\u00e2mina de serra de fita, reproduzida da Tabela 2 de Sawing, no ASM Handbook, Volume 16, Machining. A resist\u00eancia ao calor \u00e9 a temperatura na qual o gume de corte mant\u00e9m sua dureza. O corpo de toda fita de borda soldada \u00e9 um a\u00e7o liga de alta resist\u00eancia \u00e0 tra\u00e7\u00e3o, operando a 40 a 47 HRC ap\u00f3s a t\u00eampera dos dentes.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M2 com dureza na ponta do dente de 64 HRC \u00e9 recomendado para tubos de a\u00e7o de parede muito fina abaixo de 1,5 mm (0,060 in.) e para barras muito pequenas. Para a\u00e7os carbono e liga, a fonte recomenda Matrix 2 a 67 HRC, ou uma l\u00e2mina de passo vari\u00e1vel com bordas Matrix 2. Para a\u00e7os tratados termicamente, a\u00e7os inoxid\u00e1veis e superligas, recomenda-se ponta de dente M42 a 69 HRC, e fitas M42 s\u00e3o as indicadas para serrar di\u00e2metros de 100 mm (4 in.) ou maiores. L\u00e2minas M42 para esse trabalho devem ter \u00e2ngulo de corte positivo em vez do \u00e2ngulo padr\u00e3o de 90 graus, para facilitar a penetra\u00e7\u00e3o. Fitas com bordas de carboneto de tungst\u00eanio brasadas ou soldadas a um corpo de a\u00e7o liga s\u00e3o reservadas para os trabalhos mais duros, como ligas resistentes ao calor \u00e0 base de n\u00edquel e cobalto e se\u00e7\u00f5es mais espessas que 150 mm (6 in.), porque t\u00eam baixa resist\u00eancia ao choque, mas a mais alta dureza a quente.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Largura da fita para um determinado raio<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Em uma m\u00e1quina de contorno, a fita deve seguir o raio sem travar, e a largura da fita define o menor raio que ela pode cortar. Uma fita mais larga tem mais rigidez de viga e mant\u00e9m uma linha mais reta, portanto deve-se usar a fita mais larga que ainda corte o raio. Em trabalhos de corte, onde todo corte \u00e9 reto, fitas de 25 a 125 mm (1 a 5 in.) de largura s\u00e3o preferidas porque suportam cargas maiores.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\" colspan=\"2\">Raio a ser cortado<\/th><th class=\"has-text-align-left\" data-align=\"left\" colspan=\"2\">Largura da fita<\/th><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">mm<\/th><th class=\"has-text-align-left\" data-align=\"left\">em.<\/th><th class=\"has-text-align-left\" data-align=\"left\">mm<\/th><th class=\"has-text-align-left\" data-align=\"left\">em.<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">&lt;1.6<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\/16<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.6<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\/16<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">1.6<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\/16<\/td><td class=\"has-text-align-left\" data-align=\"left\">2.4<\/td><td class=\"has-text-align-left\" data-align=\"left\">3\/32<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">3.2<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\/8<\/td><td class=\"has-text-align-left\" data-align=\"left\">3.2<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\/8<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">8<\/td><td class=\"has-text-align-left\" data-align=\"left\">5\/16<\/td><td class=\"has-text-align-left\" data-align=\"left\">4.8<\/td><td class=\"has-text-align-left\" data-align=\"left\">3\/16<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">16<\/td><td class=\"has-text-align-left\" data-align=\"left\">5\/8<\/td><td class=\"has-text-align-left\" data-align=\"left\">6.4<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\/4<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">36.5<\/td><td class=\"has-text-align-left\" data-align=\"left\">1 7\/16<\/td><td class=\"has-text-align-left\" data-align=\"left\">9.5<\/td><td class=\"has-text-align-left\" data-align=\"left\">3\/8<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">65<\/td><td class=\"has-text-align-left\" data-align=\"left\">2 9\/16<\/td><td class=\"has-text-align-left\" data-align=\"left\">13<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\/2<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">95<\/td><td class=\"has-text-align-left\" data-align=\"left\">3 3\/4<\/td><td class=\"has-text-align-left\" data-align=\"left\">16<\/td><td class=\"has-text-align-left\" data-align=\"left\">5\/8<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">140<\/td><td class=\"has-text-align-left\" data-align=\"left\">5 1\/2<\/td><td class=\"has-text-align-left\" data-align=\"left\">19<\/td><td class=\"has-text-align-left\" data-align=\"left\">3\/4<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">180<\/td><td class=\"has-text-align-left\" data-align=\"left\">7 1\/4<\/td><td class=\"has-text-align-left\" data-align=\"left\">25<\/td><td class=\"has-text-align-left\" data-align=\"left\">1<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">300<\/td><td class=\"has-text-align-left\" data-align=\"left\">12<\/td><td class=\"has-text-align-left\" data-align=\"left\">32<\/td><td class=\"has-text-align-left\" data-align=\"left\">1 1\/4<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">530<\/td><td class=\"has-text-align-left\" data-align=\"left\">21<\/td><td class=\"has-text-align-left\" data-align=\"left\">38<\/td><td class=\"has-text-align-left\" data-align=\"left\">1 1\/2<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">710<\/td><td class=\"has-text-align-left\" data-align=\"left\">28<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Largura de fita recomendada para o corte de contorno de v\u00e1rios raios, reproduzida da Tabela 3 de Sawing, no ASM Handbook, Volume 16, Machining.<\/em><\/p>\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-3e4fb3d2 wp-block-group-is-layout-constrained\" style=\"border-radius:8px;background-color:#f4f8ff;margin-bottom:24px;padding-top:20px;padding-right:24px;padding-bottom:20px;padding-left:24px\">\n<p class=\"wp-block-paragraph\"><strong>Serragem de fita de a\u00e7o ferramenta, PDF para impress\u00e3o<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">As velocidades de corte e contorno por serra de fita para os graus de a\u00e7o ferramenta, com as tabelas de composi\u00e7\u00e3o da l\u00e2mina e largura de fita, em um \u00fanico PDF com nossos dados de contato.<\/p>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/Aobo-Steel-Band-Sawing-Tool-Steel-Speeds.pdf\">Baixar PDF<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Graus e estoque<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Os dois graus de alto carbono alto cromo nas tabelas s\u00e3o os mais serrados de barra pela maioria das oficinas, e as velocidades para cort\u00e1-los e usin\u00e1-los est\u00e3o em <a href=\"https:\/\/aobosteel.com\/pt\/d2-tool-steel-machining-guide\/\">o guia de usinagem do a\u00e7o ferramenta D2<\/a>. O grau de t\u00eampera ao ar e seu comportamento de serragem e usinagem est\u00e3o em <a href=\"https:\/\/aobosteel.com\/pt\/a2-tool-steel-machining-fabrication-guide\/\">o guia de usinagem e fabrica\u00e7\u00e3o do a\u00e7o ferramenta A2<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para os graus de trabalho a quente com cromo, os n\u00fameros de serragem est\u00e3o junto com a t\u00eampera e a dureza de trabalho em <a href=\"https:\/\/aobosteel.com\/pt\/h13-tool-steel-machinability\/\">a p\u00e1gina de usinabilidade do a\u00e7o ferramenta H13<\/a>. Onde o trabalho passa da serra para uma ferramenta de corte, as velocidades de torneamento, fresamento e fura\u00e7\u00e3o por grau est\u00e3o reunidas em <a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-cutting-speeds-and-feeds\/\">a p\u00e1gina de velocidades e avan\u00e7os de corte de a\u00e7o ferramenta<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O acabamento que uma serra deixa \u00e9 bem superior ao que uma superf\u00edcie retificada mant\u00e9m, e os valores est\u00e3o listados por processo em <a href=\"https:\/\/aobosteel.com\/pt\/surface-roughness-chart\/\">a tabela de rugosidade superficial<\/a>. Ap\u00f3s o tratamento t\u00e9rmico, os mesmos graus s\u00e3o retificados em vez de serrados, e a escolha do rebolo por grau est\u00e1 em <a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-grindability-and-grinding-wheel-selection\/\">a p\u00e1gina de retificabilidade do a\u00e7o ferramenta e sele\u00e7\u00e3o de rebolo<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-3e4fb3d2 wp-block-group-is-layout-constrained\" style=\"border-radius:8px;background-color:#f4f8ff;margin-bottom:24px;padding-top:20px;padding-right:24px;padding-bottom:20px;padding-left:24px\">\n<p class=\"wp-block-paragraph\"><strong>Serragem de fita de a\u00e7o ferramenta, PDF para impress\u00e3o<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">As velocidades de corte e contorno por serra de fita para os graus de a\u00e7o ferramenta, com as tabelas de composi\u00e7\u00e3o da l\u00e2mina e largura de fita, em um \u00fanico PDF com nossos dados de contato.<\/p>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/Aobo-Steel-Band-Sawing-Tool-Steel-Speeds.pdf\">Baixar PDF<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Antes de usar esses valores<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Esta p\u00e1gina \u00e9 um resumo de refer\u00eancia da pr\u00e1tica publicada e n\u00e3o \u00e9 uma especifica\u00e7\u00e3o da Aobo Steel. As velocidades s\u00e3o reproduzidas das tabelas de origem, e uma fita, forma de dente, m\u00e1quina ou condi\u00e7\u00e3o de barra diferentes ir\u00e3o alter\u00e1-las. As condi\u00e7\u00f5es finais s\u00e3o definidas na m\u00e1quina em fun\u00e7\u00e3o do material como entregue.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fonte: ASM Handbook, Volume 16, Machining, ASM International, 1989.<\/p>","protected":false},"excerpt":{"rendered":"<p>Band Sawing Tool Steel, Cutoff and Contour Speeds Sawing is how a tool steel bar is cut to length and how a die block is roughed out before any other machining. A band saw does it with a thin, continuous blade, and the published speeds for tool steels are set grade by grade rather than [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"normal-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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