{"id":3113,"date":"2019-10-15T09:07:13","date_gmt":"2019-10-15T09:07:13","guid":{"rendered":"https:\/\/www.hbjinyong.com\/?p=3113"},"modified":"2022-12-04T12:13:29","modified_gmt":"2022-12-04T12:13:29","slug":"what-is-hot-dip-galvanizing","status":"publish","type":"post","link":"https:\/\/www.hbjinyong.com\/pt\/what-is-hot-dip-galvanizing\/","title":{"rendered":"O que \u00e9 galvaniza\u00e7\u00e3o por imers\u00e3o a quente? Como funciona?-The Ultimate Guide"},"content":{"rendered":"<p>O a\u00e7o \u00e9 um material valioso amplamente usado nas ind\u00fastrias de constru\u00e7\u00e3o e engenharia. O a\u00e7o \u00e9 dur\u00e1vel, vers\u00e1til e barato, mas \u00e9 propenso \u00e0 corros\u00e3o, especialmente em ambientes externos.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3116\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/galvanizing.jpg\" alt=\"galvaniza\u00e7\u00e3o\" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/galvanizing.jpg 1000w, https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/galvanizing-768x512.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>As pessoas tentaram desenvolver solu\u00e7\u00f5es para economias de longo prazo, e come\u00e7aram a revestir o a\u00e7o mergulhando-o em zinco fundido ap\u00f3s limp\u00e1-lo. Eles usaram &#039;<b>Galvaniza\u00e7\u00e3o&#039; <\/b>para descrever a administra\u00e7\u00e3o de choques el\u00e9tricos no s\u00e9culo XIX.<\/p>\n<p>Vamos nos aprofundar em &#039;<b>Galvaniza\u00e7\u00e3o,&#039;<\/b> mas sinta-se \u00e0 vontade para pular para qualquer se\u00e7\u00e3o que lhe interesse:<\/p>\n<ul>\n<li><a href=\"#step1\">Cap\u00edtulo 1: O que \u00e9 galvaniza\u00e7\u00e3o?<\/a><\/li>\n<li><a href=\"#step2\">Cap\u00edtulo 2: Como a galvaniza\u00e7\u00e3o protege o a\u00e7o da ferrugem?<\/a><\/li>\n<li><a href=\"#step6\">Cap\u00edtulo 3: Quais s\u00e3o os tipos de galvaniza\u00e7\u00e3o?<\/a><\/li>\n<li><a href=\"#step7\">Cap\u00edtulo 4: Por que escolher a galvaniza\u00e7\u00e3o por imers\u00e3o a quente?<\/a><\/li>\n<li><a href=\"#step3\">Cap\u00edtulo 5: Processo de galvaniza\u00e7\u00e3o a quente<\/a><\/li>\n<li><a href=\"#step8\">Cap\u00edtulo 6: Quanto custa a galvaniza\u00e7\u00e3o a quente?<\/a><\/li>\n<li><a href=\"#step4\">Cap\u00edtulo 7: 6 dicas antes da galvaniza\u00e7\u00e3o a quente<\/a><\/li>\n<li><a href=\"#step5\">Cap\u00edtulo 8: Especifica\u00e7\u00e3o de a\u00e7o galvanizado por imers\u00e3o a quente<\/a><\/li>\n<\/ul>\n<h2 id=\"step1\"><strong>O que \u00e9 galvaniza\u00e7\u00e3o?<\/strong><\/h2>\n<p>Galvaniza\u00e7\u00e3o tamb\u00e9m \u00e9 chamada de Galvaniza\u00e7\u00e3o (\u00e0s vezes chamada de Galvaniza\u00e7\u00e3o ou Galvaniza\u00e7\u00e3o). \u00c9 um processo que aplica um revestimento de zinco \u00e0 superf\u00edcie do metal.<\/p>\n<p>A galvaniza\u00e7\u00e3o pode reduzir os custos de manuten\u00e7\u00e3o e \u00e9 uma das solu\u00e7\u00f5es mais eficazes, pr\u00e1ticas e econ\u00f4micas para proteger o metal da corros\u00e3o.<\/p>\n<h2 id=\"step2\">Como a galvaniza\u00e7\u00e3o protege o a\u00e7o da ferrugem?<\/h2>\n<p>A galvaniza\u00e7\u00e3o protege os produtos de duas maneiras.<\/p>\n<p>A galvaniza\u00e7\u00e3o cria um revestimento de zinco que protege o metal do ambiente ao redor. O revestimento de zinco pode evitar que \u00e1gua e outros elementos no ar corroam o a\u00e7o por baixo.\u00a0<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3125\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Galvanic-Corrosion-Terminology.png\" alt=\"Corros\u00e3o Galv\u00e2nica\" width=\"585\" height=\"299\" \/><\/p>\n<p>A galvaniza\u00e7\u00e3o tamb\u00e9m protege produtos met\u00e1licos por meio da &quot;corros\u00e3o galv\u00e2nica&quot;. O revestimento de zinco tem afinidade por ser o \u00e2nodo em contato com muitos outros tipos de metais, o que retarda a corros\u00e3o dos produtos ou do c\u00e1todo.<\/p>\n<h2 id=\"step6\">Quais s\u00e3o os tipos de galvaniza\u00e7\u00e3o?<\/h2>\n<p>Existem basicamente quatro processos diferentes para as empresas galvanizarem metais em comum: pr\u00e9-galvaniza\u00e7\u00e3o, galvaniza\u00e7\u00e3o por imers\u00e3o a quente (HDG), galvaniza\u00e7\u00e3o a frio e galvaniza\u00e7\u00e3o el\u00e9trica.<\/p>\n<p><a href=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/pre-galvanized-steel-pipe.jpg\"><img decoding=\"async\" class=\"alignleft wp-image-4221\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/pre-galvanized-steel-pipe-150x150.jpg\" alt=\"tubo de a\u00e7o pr\u00e9 galvanizado\" width=\"200\" height=\"150\" \/><\/a><\/p>\n<p>A pr\u00e9-galvaniza\u00e7\u00e3o tamb\u00e9m \u00e9 chamada de galvaniza\u00e7\u00e3o de moinho, significa que o metal \u00e9 galvanizado em formato de chapa antes do corte e processamento posterior. A pr\u00e9-galvaniza\u00e7\u00e3o d\u00e1 \u00eanfase ao tempo em que o metal \u00e9 galvanizado, \u00e9 o \u00fanico tipo que \u00e9 galvanizado antes da fabrica\u00e7\u00e3o.<\/p>\n<p><a href=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/hot-dipped-galvanized-metal.jpg\"><img decoding=\"async\" class=\"wp-image-4225 alignright\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/hot-dipped-galvanized-metal.jpg\" alt=\"metal galvanizado a quente\" width=\"200\" height=\"150\" \/><\/a><\/p>\n<p>\u00a0<\/p>\n<p>A galvaniza\u00e7\u00e3o por imers\u00e3o a quente \u00e9 a aplica\u00e7\u00e3o de um revestimento de zinco por meio da imers\u00e3o de artigos met\u00e1licos limpos e preparados em zinco fundido, processo pelo qual camadas de liga podem ser formadas entre o metal prim\u00e1rio e a camada externa de zinco puro.<\/p>\n<p><a href=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Cold-Galvanizing-Spray-Zinc-Rich-Paint.jpg\"><img decoding=\"async\" class=\"alignleft wp-image-4227\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Cold-Galvanizing-Spray-Zinc-Rich-Paint.jpg\" alt=\"Spray de galvaniza\u00e7\u00e3o a frio, tinta rica em zinco\" width=\"200\" height=\"150\" \/><\/a><\/p>\n<p>A galvaniza\u00e7\u00e3o a frio \u00e9 um processo de pintura ou pulveriza\u00e7\u00e3o que reveste a superf\u00edcie de um metal com tintas ricas em zinco.<\/p>\n<p>\u00a0<\/p>\n<p><a href=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/electro-galvanizing-line.jpg\"><img decoding=\"async\" class=\"alignright wp-image-4229\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/electro-galvanizing-line.jpg\" alt=\"eletro galvaniza\u00e7\u00e3o\" width=\"200\" height=\"150\" \/><\/a><\/p>\n<p>A galvaniza\u00e7\u00e3o el\u00e9trica \u00e9 um processo que envolve galvanoplastia, que consiste na passagem de uma corrente el\u00e9trica atrav\u00e9s de uma solu\u00e7\u00e3o salina\/zinco com um \u00e2nodo de zinco e um condutor de a\u00e7o.<\/p>\n<p>\u00a0<\/p>\n<h2 id=\"step7\">Por que as pessoas escolhem a galvaniza\u00e7\u00e3o por imers\u00e3o a quente?<\/h2>\n<p>A galvaniza\u00e7\u00e3o por imers\u00e3o a quente provou ser superior em muitos aspectos a outros m\u00e9todos de galvaniza\u00e7\u00e3o devido ao processo de aplica\u00e7\u00e3o individual; As vantagens est\u00e3o listadas abaixo:<\/p>\n<h3><strong>Baixo custo <\/strong><\/h3>\n<p>O custo tem duas partes principais: custo inicial e custo vital\u00edcio.<\/p>\n<p>A galvaniza\u00e7\u00e3o a quente \u00e9 um processo de fabrica\u00e7\u00e3o altamente mecanizado, que exige menos m\u00e3o de obra e tempo em compara\u00e7\u00e3o com a pintura galvanizada a frio.<\/p>\n<p>Manuten\u00e7\u00e3o m\u00ednima para uma longa vida \u00fatil faz com que os produtos galvanizados por imers\u00e3o a quente custem menos em compara\u00e7\u00e3o ao a\u00e7o galvanizado eletroliticamente e pr\u00e9-galvanizado.<\/p>\n<h3>Prote\u00e7\u00e3o completa<\/h3>\n<p>A galvaniza\u00e7\u00e3o por imers\u00e3o a quente \u00e9 um processo que imerge produtos de metal em um banho de zinco ap\u00f3s a fabrica\u00e7\u00e3o, como corte, forjamento e soldagem. Ent\u00e3o, ele gera uma cobertura resistente, dur\u00e1vel e permanente para cada parte, at\u00e9 mesmo cantos inacess\u00edveis, o que \u00e9 muito melhor do que outros m\u00e9todos de galvaniza\u00e7\u00e3o.<\/p>\n<h3><strong>Facilidade de inspe\u00e7\u00e3o<\/strong><\/h3>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3051\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Galvanizing-Thickness-Measurement-1.jpg\" alt=\"Medi\u00e7\u00e3o da espessura da galvaniza\u00e7\u00e3o do suporte superior do poste\" width=\"600\" height=\"600\" \/><\/p>\n<p class=\"src\" data-group=\"1-1\">Para produtos galvanizados por imers\u00e3o a quente, h\u00e1 dois aspectos principais que voc\u00ea deve inspecionar ap\u00f3s a galvaniza\u00e7\u00e3o: a lisura e a espessura do revestimento de zinco.<\/p>\n<p>A qualidade da camada de zinco \u00e9 avaliada prontamente a olho nu, e a espessura \u00e9 f\u00e1cil de testar com medidores de espessura magn\u00e9ticos de acordo com a ISO1461 e a exig\u00eancia dos clientes. Voc\u00ea pode verificar o <a href=\"#step5\">padr\u00e3o detalhado de a\u00e7o galvanizado a quente<\/a> abaixo.<\/p>\n<h2 id=\"step3\">Processo de galvaniza\u00e7\u00e3o por imers\u00e3o a quente<\/h2>\n<p>Aqui est\u00e1 um diagrama descrevendo o processo.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3117\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Galvanizing-Process.png\" alt=\"\" width=\"775\" height=\"256\" srcset=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Galvanizing-Process.png 775w, https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Galvanizing-Process-768x254.png 768w\" sizes=\"(max-width: 775px) 100vw, 775px\" \/><\/p>\n<p>Voc\u00ea tamb\u00e9m pode ver o v\u00eddeo abaixo.<\/p>\n<p><iframe title=\"Galvaniza\u00e7\u00e3o por imers\u00e3o a quente - Processo de imers\u00e3o... em a\u00e7\u00e3o\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Az87Q0JedG4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h2 id=\"step8\">Quanto custa a galvaniza\u00e7\u00e3o por imers\u00e3o a quente?<\/h2>\n<p><span data-preserver-spaces=\"true\">O pre\u00e7o do revestimento de zinco \u00e9 afetado principalmente pelos seguintes aspectos<\/span><\/p>\n<h3 class=\"input\">O local onde as f\u00e1bricas est\u00e3o localizadas<\/h3>\n<p><span data-preserver-spaces=\"true\">Os pre\u00e7os variam significativamente de pa\u00eds para pa\u00eds, tome nossos produtos como exemplo. Embora o pre\u00e7o da galvaniza\u00e7\u00e3o continue subindo, o pre\u00e7o na China \u00e9 de cerca de 400 a 500 d\u00f3lares americanos por tonelada em 2020, o que ainda \u00e9 muito menor do que o do Ocidente.<\/span><\/p>\n<h3><span data-preserver-spaces=\"true\">O pre\u00e7o do zinco<\/span><\/h3>\n<p><span data-preserver-spaces=\"true\">O zinco \u00e9 o principal consum\u00edvel no processo de galvaniza\u00e7\u00e3o e seu pre\u00e7o afeta diretamente o pre\u00e7o da galvaniza\u00e7\u00e3o.<\/span><\/p>\n<h3><span data-preserver-spaces=\"true\">Forma e tamanho do a\u00e7o<\/span><\/h3>\n<p><span data-preserver-spaces=\"true\">Os custos s\u00e3o determinados pela facilidade de manuseio atrav\u00e9s do processo de galvaniza\u00e7\u00e3o, quanto mais f\u00e1cil, mais barato.<\/span><\/p>\n<h3><span data-preserver-spaces=\"true\">Padr\u00e3o galvanizado<\/span><\/h3>\n<p><span data-preserver-spaces=\"true\">Quanto melhor for o acabamento superficial da camada de zinco, quanto mais espesso for o revestimento, maior ser\u00e1 o pre\u00e7o.<\/span><\/p>\n<h2 id=\"step4\">6 coisas que voc\u00ea precisa saber antes de galvanizar por imers\u00e3o a quente.<\/h2>\n<h3>Padr\u00e3o de galvaniza\u00e7\u00e3o<\/h3>\n<p>Os padr\u00f5es de galvaniza\u00e7\u00e3o n\u00e3o s\u00e3o os mesmos em um mercado diferente, siga a regra de\u00a0 <a href=\"\/pt\/ferragens-para-linha-de-postes\/\" target=\"_blank\" rel=\"noopener noreferrer\">ferragens de poste<\/a> que alguns dos nossos clientes exigem como exemplo:<\/p>\n<p>Todos os produtos s\u00e3o galvanizados de acordo com a norma BS 729 ou ASTM A123.<\/p>\n<p>Al\u00e9m da BS 729 ou ASTM A123, toda galvaniza\u00e7\u00e3o atende \u00e0s condi\u00e7\u00f5es estabelecidas abaixo.<\/p>\n<ul>\n<li>A galvaniza\u00e7\u00e3o por imers\u00e3o a quente \u00e9 aplicada a todos os produtos, como a\u00e7o estrutural, fabrica\u00e7\u00f5es de estruturas e chapas de a\u00e7o, conjuntos de tubos, parafusos, porcas, parafusos e outros pequenos artigos processados em massa, pe\u00e7as fundidas de a\u00e7o, pe\u00e7as forjadas de a\u00e7o, pe\u00e7as estampadas de a\u00e7o, pe\u00e7as fundidas de ferro e produtos similares.<\/li>\n<li>A galvaniza\u00e7\u00e3o por imers\u00e3o a quente \u00e9 aplicada a produtos como arame, chapa de a\u00e7o ou tubos, que posteriormente ser\u00e3o processados em artigos acabados.<\/li>\n<\/ul>\n<h3>Cor<\/h3>\n<p>Em algumas circunst\u00e2ncias, todo o revestimento pode consistir em camadas de liga e, nesses casos, a apar\u00eancia pode ser cinza opaco.<\/p>\n<h3>Material<\/h3>\n<p>A\u00e7o macio, a\u00e7o de baixa liga e ferro fundido s\u00e3o metais particularmente adequados para galvaniza\u00e7\u00e3o por imers\u00e3o a quente, mas outros metais ferrosos tamb\u00e9m podem ser galvanizados por imers\u00e3o a quente. O fabricante garante que os itens a serem galvanizados consistem em min\u00e9rio adequado para galvaniza\u00e7\u00e3o.<\/p>\n<h3>Tens\u00f5es internas<\/h3>\n<p>O fabricante garante que as tens\u00f5es internas no material, causadas por tratamentos como trabalho a frio extensivo, dobramento, soldagem, etc., sejam aliviadas conforme necess\u00e1rio antes do envio para galvaniza\u00e7\u00e3o por imers\u00e3o a quente. Essas tens\u00f5es podem levar \u00e0 fragiliza\u00e7\u00e3o ou rachaduras intercristalinas ap\u00f3s a galvaniza\u00e7\u00e3o.<\/p>\n<h3>Decapagem<\/h3>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3123\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Pickling-before-Galvanizing.jpg\" alt=\"Decapagem antes da galvaniza\u00e7\u00e3o\" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Pickling-before-Galvanizing.jpg 1000w, https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Pickling-before-Galvanizing-768x512.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>Contaminantes superficiais que n\u00e3o podem ser removidos pela decapagem, como \u00f3leo, gordura, alcatr\u00e3o, tinta, esc\u00f3ria de soldagem e impurezas semelhantes, s\u00e3o removidos antes da decapagem.<\/p>\n<p>Fendas e furos s\u00e3o evitados em soldas, pois eles ret\u00eam \u00e1cido de decapagem e levam \u00e0 corros\u00e3o prematura do revestimento de zinco.<\/p>\n<p>Os artigos n\u00e3o devem ser galvanizados se seu design e formas forem tais que a solu\u00e7\u00e3o de decapagem n\u00e3o possa ser removida com certeza ou se a ventila\u00e7\u00e3o ou drenagem adequada n\u00e3o for poss\u00edvel para garantir uma imers\u00e3o de galvaniza\u00e7\u00e3o segura e eficaz. Se for necess\u00e1rio fazer furos de drenagem ou ventila\u00e7\u00e3o nos artigos, o fornecedor deve obter o consentimento do cliente.<\/p>\n<h3>Banho de galvaniza\u00e7\u00e3o por imers\u00e3o a quente<\/h3>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3120\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Hot-Dip-Galvanizing-Bath.jpg\" alt=\"\" width=\"1000\" height=\"668\" srcset=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Hot-Dip-Galvanizing-Bath.jpg 1000w, https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Hot-Dip-Galvanizing-Bath-768x513.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>O zinco do banho de galvaniza\u00e7\u00e3o a quente cont\u00e9m n\u00e3o menos que 98,5 % de zinco (em massa), de acordo com a norma ISO 752. N\u00e3o s\u00e3o aceit\u00e1veis impurezas ou aditivos de zinco, que podem ter um efeito prejudicial na durabilidade do revestimento de zinco.<\/p>\n<h2 id=\"step5\">Especifica\u00e7\u00e3o de a\u00e7o galvanizado por imers\u00e3o a quente<\/h2>\n<p><strong>Revestimento Acabado Apar\u00eancia<\/strong><\/p>\n<p><strong><img decoding=\"async\" class=\"aligncenter size-full wp-image-3080\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Packing-3.jpg\" alt=\"\" width=\"1280\" height=\"960\" srcset=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Packing-3.jpg 1280w, https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Packing-3-768x576.jpg 768w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/strong><\/p>\n<p>O revestimento galvanizado \u00e9 suave, cont\u00ednuo, uniforme e livre de qualquer coisa prejudicial ao uso declarado do artigo revestido. \u00c9 livre de manchas de \u00e1cido e manchas de fluxo e sem escamas ou bolhas. O revestimento n\u00e3o \u00e9 remov\u00edvel pelo manuseio ou embalagem normais.<\/p>\n<p>Apar\u00eancia de superf\u00edcie brilhante, cinza opaca ou salpicada \u00e9 geralmente aceit\u00e1vel. Uma mancha consider\u00e1vel de armazenamento \u00famido (ferrugem branca) \u00e9 inaceit\u00e1vel.<\/p>\n<p><a href=\"\/pt\/galvanized-thickness-test-according-to-iso1461\/\" target=\"_blank\" rel=\"noopener noreferrer\"><em><strong>Espessura do revestimento <\/strong><\/em><\/a><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3082\" src=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Sample-testing-1.jpg\" alt=\"\" width=\"564\" height=\"560\" srcset=\"https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Sample-testing-1.jpg 564w, https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Sample-testing-1-150x150.jpg 150w, https:\/\/www.hbjinyong.com\/wp-content\/uploads\/2019\/10\/Sample-testing-1-66x66.jpg 66w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><\/p>\n<p>Para um dos nossos clientes, <a href=\"\/pt\/galvanized-thickness-test-according-to-iso1461\/\" target=\"_blank\" rel=\"noopener noreferrer\">a espessura do revestimento galvanizado<\/a> atende aos valores m\u00e9dios m\u00ednimos indicados na tabela abaixo quando testado seguindo os requisitos abaixo estabelecidos:<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"299\">\n<p><strong>Descri\u00e7\u00e3o do item<\/strong><\/p>\n<\/td>\n<td width=\"128\">\n<p><strong>Massa m\u00ednima de zinco depositada (g\/mm\u00b2)<\/strong><\/p>\n<\/td>\n<td width=\"125\">\n<p><strong>Espessura m\u00e9dia m\u00ednima do revestimento (um)*<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"299\">\n<p>Artigos de a\u00e7o, com espessura igual ou superior a 5 mm<\/p>\n<p>Artigos de a\u00e7o com espessura entre 2 mm e 5 mm<\/p>\n<p>Artigos de a\u00e7o com espessura inferior a 2 mm<\/p>\n<p>Artigos de a\u00e7o roscados<\/p>\n<p>Fundi\u00e7\u00e3o de ferro<\/p>\n<\/td>\n<td width=\"128\">\n<p><strong>610<\/strong><\/p>\n<p><strong>460<\/strong><\/p>\n<p><strong>335<\/strong><\/p>\n<p><strong>305<\/strong><\/p>\n<p><strong>610<\/strong><\/p>\n<\/td>\n<td width=\"125\">\n<p><strong>85<\/strong><\/p>\n<p><strong>65<\/strong><\/p>\n<p><strong>47<\/strong><\/p>\n<p><strong>43<\/strong><\/p>\n<p><strong>85<\/strong><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><em>Espessura do revestimento galvanizado e massa de zinco\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/em>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n<ul>\n<li>os valores m\u00ednimos de espessura m\u00e9dia fornecidos nesta tabela s\u00e3o definidos como o menor dos valores m\u00e9dios individuais para o n\u00famero de amostras em teste.<\/li>\n<\/ul>\n<p><strong>Uniformidade do revestimento<\/strong><\/p>\n<p>A uniformidade do revestimento galvanizado \u00e9 tal que a medi\u00e7\u00e3o de espessura m\u00ednima adequada em qualquer amostra de teste n\u00e3o seja mais do que 7um abaixo do valor m\u00e9dio m\u00ednimo especificado para aquele artigo na tabela acima.<\/p>\n<p><strong>Massa de revestimento <\/strong><\/p>\n<p>A massa do revestimento galvanizado por metro quadrado da \u00e1rea de superf\u00edcie est\u00e1 em conformidade com os valores m\u00ednimos fornecidos pelos clientes quando testados de acordo com os requisitos.<\/p>\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Teste de massa de revestimento de zinco\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/H9YuxQRuz-w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Teste de massa de revestimento<\/em><\/p>\n\n\n<h2>Perguntas frequentes (FAQs)&nbsp;<\/h2>\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1571447652593\"><strong class=\"schema-faq-question\">O que \u00e9 galvaniza\u00e7\u00e3o por imers\u00e3o a quente?<\/strong> <p class=\"schema-faq-answer\">A galvaniza\u00e7\u00e3o por imers\u00e3o a quente \u00e9 a aplica\u00e7\u00e3o de um revestimento de zinco por meio da imers\u00e3o de produtos met\u00e1licos limpos e preparados em zinco fundido, processo pelo qual camadas de liga podem ser formadas entre o metal b\u00e1sico e a camada externa de zinco puro.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1571447717218\"><strong class=\"schema-faq-question\">Quantos tipos de galvaniza\u00e7\u00e3o?<\/strong> <p class=\"schema-faq-answer\">Existem basicamente quatro processos diferentes para as empresas galvanizarem metais em comum:<br\/>Pr\u00e9 galvaniza\u00e7\u00e3o<br\/>Galvaniza\u00e7\u00e3o por imers\u00e3o a quente (HDG)<br\/>Galvaniza\u00e7\u00e3o a frio<br\/>Galvaniza\u00e7\u00e3o el\u00e9trica.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1571469609684\"><strong class=\"schema-faq-question\">Como a galvaniza\u00e7\u00e3o a quente protege o a\u00e7o da ferrugem?<\/strong> <p class=\"schema-faq-answer\">A galvaniza\u00e7\u00e3o protege os produtos de duas maneiras.<br\/>A galvaniza\u00e7\u00e3o cria um revestimento de zinco que protege o metal do ambiente ao redor. O revestimento de zinco pode evitar que \u00e1gua e outros elementos no ar corroam o a\u00e7o por baixo.<br\/>A galvaniza\u00e7\u00e3o tamb\u00e9m protege produtos met\u00e1licos por meio da &quot;corros\u00e3o galv\u00e2nica&quot;. O revestimento de zinco tem afinidade por ser o \u00e2nodo em contato com muitos outros tipos de metais, o que retarda a corros\u00e3o dos produtos ou do c\u00e1todo.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1586186533533\"><strong class=\"schema-faq-question\">Por que escolher a galvaniza\u00e7\u00e3o por imers\u00e3o a quente?<\/strong> <p class=\"schema-faq-answer\">A galvaniza\u00e7\u00e3o por imers\u00e3o a quente provou ser superior em muitos aspectos a outros m\u00e9todos de galvaniza\u00e7\u00e3o devido ao processo de aplica\u00e7\u00e3o especial:<br\/>Menor custo<br\/>Menos manuten\u00e7\u00e3o<br\/>Maior vida \u00fatil<br\/>Processo r\u00e1pido<br\/>Eficiente em recursos<br\/>Facilidade de inspe\u00e7\u00e3o.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1586228540235\"><strong class=\"schema-faq-question\">Quanto custa a galvaniza\u00e7\u00e3o por imers\u00e3o a quente?<\/strong> <p class=\"schema-faq-answer\">O pre\u00e7o do revestimento de zinco \u00e9 afetado principalmente pelos seguintes aspectos:<br\/>O local onde as f\u00e1bricas est\u00e3o localizadas. Os pre\u00e7os variam significativamente de pa\u00eds para pa\u00eds, tome nossos produtos como exemplo. Embora o pre\u00e7o da galvaniza\u00e7\u00e3o continue subindo, o pre\u00e7o na China \u00e9 de cerca de 400 a 500 d\u00f3lares americanos por tonelada em 2020, o que ainda \u00e9 muito menor do que o do Ocidente.<br\/>O pre\u00e7o do zinco. O zinco \u00e9 o principal consum\u00edvel no processo de galvaniza\u00e7\u00e3o, e seu pre\u00e7o afeta diretamente o pre\u00e7o da galvaniza\u00e7\u00e3o.<br\/>Formato e tamanho do a\u00e7o. Os custos s\u00e3o determinados pela facilidade de manuseio atrav\u00e9s do processo de galvaniza\u00e7\u00e3o, quanto mais f\u00e1cil, mais barato.<br\/>Padr\u00e3o galvanizado. Quanto melhor o acabamento da superf\u00edcie da camada de zinco, mais espesso o revestimento, maior o pre\u00e7o.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>O a\u00e7o \u00e9 um material valioso amplamente usado nas ind\u00fastrias de constru\u00e7\u00e3o e engenharia. O a\u00e7o \u00e9 dur\u00e1vel, vers\u00e1til e barato, mas \u00e9 propenso \u00e0 corros\u00e3o, especialmente em ambientes externos. As pessoas tentaram desenvolver solu\u00e7\u00f5es para economias de longo prazo e come\u00e7aram a revestir o a\u00e7o mergulhando-o em zinco fundido ap\u00f3s limp\u00e1-lo. Eles usaram &#039;Galvaniza\u00e7\u00e3o&#039; [\u2026]<\/p>","protected":false},"author":1,"featured_media":3116,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3113","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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