{"id":3265,"count":7,"description":"\r\n\r\nV\u00e1lvulas de fundi\u00e7\u00e3o s\u00e3o v\u00e1lvulas feitas por fundi\u00e7\u00e3o. Geralmente, os graus de press\u00e3o das v\u00e1lvulas fundidas s\u00e3o relativamente baixos (como PN16, PN25 e PN40, mas tamb\u00e9m existem as de alta press\u00e3o, que podem chegar a 1.500 Lb e 2.500 Lb), e a maioria de seus calibres est\u00e3o acima de DN50. As v\u00e1lvulas forjadas s\u00e3o forjadas e geralmente usadas em tubula\u00e7\u00f5es de alta qualidade com di\u00e2metros relativamente pequenos, geralmente abaixo de DN50.\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nOBTENHA DIFEREN\u00c7A ENTRE INFORMA\u00c7\u00d5ES DE FERROS FUNDIDOS E FORJADOS<\/strong><\/a>\r\n\r\n\r\n\r\n\r\nPor que usar Castings?\r\n\r\n\r\n\r\n\r\nUsamos pe\u00e7as fundidas para uma ampla variedade de pe\u00e7as de desgaste e componentes que s\u00e3o muito grandes, complicados, intricados ou inadequados para o processo de forjamento. Podemos forjar pe\u00e7as de at\u00e9 50 kg, mas a energia necess\u00e1ria para forjar itens maiores torna a fundi\u00e7\u00e3o uma alternativa muito mais vi\u00e1vel.\r\n\r\n\r\n\r\n\r\nVantagens das pe\u00e7as fundidas\r\n\r\n\r\n\r\n\r\n \tN\u00e3o existe um limite m\u00e1ximo real para o peso da pe\u00e7a fundida\r\n \tGrande variedade de op\u00e7\u00f5es de ligas\r\n \tComo as pe\u00e7as forjadas permanecem s\u00f3lidas, as ligas personalizadas s\u00e3o muito mais dif\u00edceis de colocar em produ\u00e7\u00e3o, ao passo que, com a fundi\u00e7\u00e3o, podem ser adicionadas ligas como o cr\u00f3mio, o n\u00edquel e o molibd\u00e9nio na fase fundida.\r\n \tAs ferramentas s\u00e3o frequentemente menos dispendiosas do que as matrizes de forja\r\n \tS\u00e3o necess\u00e1rias \u201cs\u00e9ries\u201d de produ\u00e7\u00e3o mais pequenas\r\n \tPe\u00e7as complicadas\/complexas n\u00e3o s\u00e3o um problema\r\n\r\n\r\n\r\n\r\nPor que usar forjados?\r\n\r\n\r\n\r\n\r\nO forjamento oferece uniformidade de composi\u00e7\u00e3o e estrutura. O forjamento resulta em recristaliza\u00e7\u00e3o metal\u00fargica e refinamento de gr\u00e3os como resultado do ciclo t\u00e9rmico e do processo de deforma\u00e7\u00e3o. Isto fortalece o produto de a\u00e7o resultante, particularmente em termos de resist\u00eancia ao impacto e ao cisalhamento.\r\n\r\n\r\n\r\n\r\n\r\nO a\u00e7o forjado \u00e9 geralmente mais resistente e confi\u00e1vel do que o a\u00e7o fundido e a placa de a\u00e7o devido ao fato de que os fluxos dos gr\u00e3os do a\u00e7o s\u00e3o alterados, adaptando-se ao formato da pe\u00e7a.\r\n\r\n\r\n\r\n\r\nVantagens dos Forjados\r\n\r\n\r\n\r\n\r\n \tGeralmente mais resistentes do que as alternativas\r\n \tSuportam melhor o impacto do que as pe\u00e7as fundidas\r\n \tA natureza do forjamento exclui a ocorr\u00eancia de porosidade, retra\u00e7\u00e3o, cavidades e problemas de vazamento a frio.\r\n \tA estrutura de gr\u00e3o apertada das pe\u00e7as forjadas torna-as mecanicamente fortes. H\u00e1 menos necessidade de ligas caras para obter componentes de alta resist\u00eancia.\r\n \tA estrutura de gr\u00e3o apertado oferece grande resist\u00eancia ao desgaste sem a necessidade de tornar os produtos \u201csuperduros\u201d. Descobrimos que o desgaste\/lavagem de uma pastilha de esmeril forjada HRC 38-42 em bruto \u00e9 praticamente o mesmo que o de uma pastilha de esmeril fundida HRC 46-50 de alta liga. A diferen\u00e7a \u00e9 que uma pe\u00e7a fundida HRC 46-50 n\u00e3o tem a ductilidade necess\u00e1ria para lidar com a retifica\u00e7\u00e3o de alto impacto.\r\n\r\n\r\n\r\n\r\nDiferen\u00e7a entre ferros fundidos e forjados\r\n\r\n\r\n\r\n\r\nV\u00e1lvula de fundi\u00e7\u00e3o: o metal \u00e9 fundido em um l\u00edquido que atenda aos requisitos e despejado no molde de v\u00e1lvula especificado. Ap\u00f3s resfriamento, solidifica\u00e7\u00e3o e limpeza, uma pe\u00e7a fundida de v\u00e1lvula com formato, tamanho e desempenho predeterminados pode ser obtida. Este \u00e9 todo o processo de fabrica\u00e7\u00e3o da v\u00e1lvula de fundi\u00e7\u00e3o. A liga\u00e7\u00e3o entre fundi\u00e7\u00e3o e v\u00e1lvulas surgiu a partir do s\u00e9culo XX. A fundi\u00e7\u00e3o desenvolveu-se rapidamente, criando ferro fundido d\u00factil, ferro fundido male\u00e1vel, a\u00e7o inoxid\u00e1vel com ultrabaixo carbono, alum\u00ednio, cobre, alum\u00ednio-sil\u00edcio, liga de alum\u00ednio-magn\u00e9sio e tit\u00e2nio, que ainda s\u00e3o frequentemente usados em produtos de v\u00e1lvulas.\r\n\r\n\r\n\r\n\r\n\r\nMateriais met\u00e1licos fundidos como base, liga \u00e0 base de n\u00edquel, etc. A principal vantagem da fundi\u00e7\u00e3o \u00e9 que o custo do blank produzido por fundi\u00e7\u00e3o \u00e9 baixo, podendo mostrar mais sua economia para pe\u00e7as com formatos complexos, principalmente com cavidades internas complexas. Ao mesmo tempo, possui maior adaptabilidade e melhores propriedades mec\u00e2nicas abrangentes. No entanto, muitos materiais e equipamentos s\u00e3o necess\u00e1rios para a produ\u00e7\u00e3o de pe\u00e7as fundidas, e poeira, gases nocivos e ru\u00eddo ser\u00e3o gerados para poluir o meio ambiente.\r\n\r\n\r\n\r\n\r\n\r\nV\u00e1lvula forjada \u00e9 um m\u00e9todo de processamento que usa m\u00e1quinas de forjamento para aplicar press\u00e3o a pe\u00e7as met\u00e1licas de v\u00e1lvulas para produzir deforma\u00e7\u00e3o pl\u00e1stica e obter pe\u00e7as forjadas com certas propriedades mec\u00e2nicas, certos formatos e tamanhos. O forjamento pode ser dividido em forjamento aberto (forjamento livre) e forjamento em modo fechado de acordo com o m\u00e9todo de conforma\u00e7\u00e3o. De acordo com a temperatura de deforma\u00e7\u00e3o, o forjamento pode ser dividido em forjamento a quente, forjamento a quente e forjamento a frio.\r\n\r\n\r\n\r\n\r\n\r\nOs materiais de forjamento s\u00e3o principalmente a\u00e7o carbono e ligas de a\u00e7o com diversas composi\u00e7\u00f5es, seguidos de alum\u00ednio, magn\u00e9sio, tit\u00e2nio, cobre, etc., e suas ligas. O estado original do material inclui barra, lingote, p\u00f3 met\u00e1lico e metal l\u00edquido. A raz\u00e3o entre a \u00e1rea da se\u00e7\u00e3o transversal do metal antes da deforma\u00e7\u00e3o e a \u00e1rea da se\u00e7\u00e3o transversal da matriz ap\u00f3s a deforma\u00e7\u00e3o \u00e9 chamada de raz\u00e3o de forjamento. Atrav\u00e9s do forjamento, a frouxid\u00e3o do metal e dos furos de soldagem pode ser eliminada, e as propriedades mec\u00e2nicas dos forjados s\u00e3o geralmente melhores do que as das pe\u00e7as fundidas do mesmo material. Para pe\u00e7as importantes de m\u00e1quinas com cargas elevadas e condi\u00e7\u00f5es de trabalho severas, os forjados s\u00e3o usados principalmente, exceto para formas mais simples que podem ser laminadas, perfis ou pe\u00e7as soldadas. A sele\u00e7\u00e3o correta das taxas de forjamento tem grande influ\u00eancia na melhoria da qualidade do produto e na redu\u00e7\u00e3o de custos.\r\n\r\n","link":"https:\/\/zecovalve.com\/pt\/tag\/difference-between-forged-and-cast","name":"Diferen\u00e7a entre forjado e fundido","slug":"difference-between-forged-and-cast","taxonomy":"post_tag","meta":[],"yoast_head":"\nDifference Between Forged and Cast Irons Valve | ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/pt\/tag\/difference-between-forged-and-cast\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Difference Between Forged and Cast Irons Valve | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"Casting valves are valves made by casting. Generally, the pressure grades of cast valves are relatively low (such as PN16, PN25, and PN40, but there are also high-pressure ones, which can reach 1500Lb, and 2500Lb), and most of their calibers are above DN50. Forged valves are forged and are generally used in high-grade pipelines with relatively small diameters, generally below DN50. GET DIFFERENCE BETWEEN CAST AND FORGED IRONS INFORMATION Why use Castings? We use castings for a wide range of wear parts and components that are too large, complicated, intricate, or otherwise unsuitable for the forging process. We can forge parts up to 50kgs but the sheer energy required to forge larger items makes casting a much more viable alternative. Advantages of Castings No real upper size limit in casting weight Large range of alloy choices As forgings remain solid, custom alloys are far more difficult to get into production whereas, with casting, alloys including Chrome, Nickel, and Moly can be added at the molten stage. Tooling is often less expensive than forge dies Smaller production \u201cruns\u201d required Complicated\/complex parts are no problem Why use Forgings? Forging offers uniformity of composition and structure. Forging results in metallurgical recrystallization and grain refinement as a result of the thermal cycle and deformation process. This strengthens the resulting steel product, particularly in terms of impact and shear strength. Forged steel is generally stronger and more reliable than castings and plate steel due to the fact that the grain flows of the steel\u00a0are altered, conforming to the shape of the part. Advantages of Forgings Generally tougher than alternatives Will handle impact better than castings The nature of forging excludes the occurrence of porosity, shrinkage, cavities, and cold pour issues. The tight grain structure of forgings makes them mechanically strong. There is less need for expensive alloys to attain high-strength components. The tight grain structure offers great wear resistance without the need to make products \u201csuperhard\u201d We have found that on a blank HRC 38-42 forged grinder insert wear\/wash is about the same as a high alloy HRC 46-50 cast grinder insert. The difference being an HRC 46-50 casting does not have the ductility to handle high-impact grinding. Difference Between Cast and Forged Irons Casting valve: the metal is smelted into a liquid that meets the requirements and poured into the specified valve mold. After cooling, solidification, and cleaning, a valve casting with a predetermined shape, size, and performance can be obtained. This is the entire casting valve crafting process. The connection between casting and valves came after the 20th century. Casting developed rapidly, creating ductile cast iron, malleable cast iron, ultra-low carbon stainless steel, aluminum copper, aluminum silicon, aluminum-magnesium alloy, and titanium which are still often used in valve products. Cast metal materials such as base, nickel base alloy, etc. The main advantage of casting is that the cost of the blank produced by casting is low, and it can show its economy more for parts with complex shapes, especially with complex inner cavities. At the same time, it has wider adaptability and better comprehensive mechanical properties. However, many materials and equipment are required for casting production, and dust, harmful gases, and noise will be generated to pollute the environment. Forged valve is a processing method that uses forging machinery to apply pressure to metal valve blanks to produce plastic deformation to obtain forgings with certain mechanical properties, certain shapes, and sizes. Forging can be divided into open forging (free forging) and closed mode forging according to the forming method. According to the deformation temperature, forging can be divided into hot forging, warm forging, and cold forging. Forging materials are mainly carbon steel and alloy steel with various compositions, followed by aluminum, magnesium, titanium, copper, etc., and their alloys. The original state of the material includes bar stock, ingot, metal powder, and liquid metal. The ratio of the cross-sectional area of the metal before deformation to the die cross-sectional area after deformation is called the forging ratio. Through forging, the as-cast looseness of metal and welding holes can be eliminated, and the mechanical properties of forgings are generally better than those of castings of the same material. For the important parts of machinery with high loads and severe working conditions, forgings are mostly used except for simpler shapes that can be rolled, profiles or welded parts. The correct selection of forging ratios has a great bearing on improving product quality and reducing costs.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/pt\/tag\/difference-between-forged-and-cast\" \/>\n<meta property=\"og:site_name\" content=\"ZECO Valve\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/zecovalve.com\/#website\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"ZECO Valve\",\"description\":\"Industrial Ball Valve, Gate Valve and Globe Valve Manufacturer\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/zecovalve.com\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"CollectionPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/difference-between-forged-and-cast#webpage\",\"url\":\"https:\/\/zecovalve.com\/tag\/difference-between-forged-and-cast\",\"name\":\"Difference Between Forged and Cast Irons Valve | ZECO Valve\",\"isPartOf\":{\"@id\":\"https:\/\/zecovalve.com\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/zecovalve.com\/tag\/difference-between-forged-and-cast#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/zecovalve.com\/tag\/difference-between-forged-and-cast\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/zecovalve.com\/tag\/difference-between-forged-and-cast#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"position\":2,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/difference-between-forged-and-cast\",\"url\":\"https:\/\/zecovalve.com\/tag\/difference-between-forged-and-cast\",\"name\":\"Difference Between Forged and Cast\"}}]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","_links":{"self":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/tags\/3265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/posts?tags=3265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}