{"id":197,"date":"2018-01-10T22:15:44","date_gmt":"2018-01-10T19:15:44","guid":{"rendered":"https:\/\/metallsmaster.ru\/?p=197"},"modified":"2020-11-02T11:54:38","modified_gmt":"2020-11-02T08:54:38","slug":"elektrodugovaya-svarka-metalla","status":"publish","type":"post","link":"https:\/\/metallsmaster.pro\/pt\/soldagem-a-arco-eletrico-de-metal\/","title":{"rendered":"Soldagem a arco el\u00e9trico de metais"},"content":{"rendered":"<p><strong>Soldagem a arco el\u00e9trico de metais <\/strong>A soldagem a arco \u00e9 um m\u00e9todo de soldagem de metais que envolve o aquecimento e a fus\u00e3o do metal com um arco el\u00e9trico. \u00c9 um dos m\u00e9todos de soldagem mais comuns. Foi descoberto pelo cientista N.G. Slavyanov em 1888. Ele utilizava um eletrodo met\u00e1lico consum\u00edvel. A soldagem ocorria sob uma camada de fluxo. <strong>Soldagem a arco el\u00e9trico de metais <\/strong>\u00c9 realizada por meio de corrente cont\u00ednua. O terminal positivo est\u00e1 na pe\u00e7a a ser soldada e o terminal negativo no eletrodo. A soldagem el\u00e9trica pode ser realizada com um eletrodo consum\u00edvel ou n\u00e3o consum\u00edvel. Este m\u00e9todo de soldagem \u00e9 amplamente utilizado em trabalhos de reparo, instala\u00e7\u00e3o, engenharia mec\u00e2nica, constru\u00e7\u00e3o e outros campos.<\/p>\n<h2>Soldagem a arco el\u00e9trico com eletrodo consum\u00edvel<\/h2>\n<p><strong>\n\t<!--<div class='top-banner-pages'>\t\n\n\t<\/div>--->\n\t<\/strong><\/p>\n<p><strong>Soldagem a arco el\u00e9trico com eletrodo consum\u00edvel <\/strong>O processo envolve a fus\u00e3o da superf\u00edcie met\u00e1lica e do eletrodo. O eletrodo serve como material para a produ\u00e7\u00e3o da solda. Para evitar a oxida\u00e7\u00e3o da solda, s\u00e3o utilizados gases como h\u00e9lio, arg\u00f4nio, di\u00f3xido de carbono e suas misturas. Durante a soldagem, eles s\u00e3o fornecidos pela cabe\u00e7a de soldagem. Elementos facilmente ioniz\u00e1veis no eletrodo tornam o arco el\u00e9trico mais est\u00e1vel. Esses elementos podem incluir s\u00f3dio, pot\u00e1ssio e c\u00e1lcio. A vantagem da soldagem CC \u00e9 que a solda \u00e9 mais limpa. Isso se deve ao fato de que a quantidade de respingos produzidos durante a fus\u00e3o do eletrodo \u00e9 m\u00ednima. <strong>Soldagem a arco el\u00e9trico de metal com eletrodo consum\u00edvel<\/strong> inclui:<\/p>\n<ul>\n<li>Preparar a superf\u00edcie met\u00e1lica a ser soldada. Limpar sujeira e manchas de \u00f3leo;<\/li>\n<li>Para formar um arco de soldagem, uma corrente el\u00e9trica \u00e9 fornecida ao eletrodo e \u00e0 pe\u00e7a de trabalho;<\/li>\n<li>Um arco \u00e9 formado. Ele atinge 7000 <sup>0<\/sup>C e come\u00e7a a derreter o metal;<\/li>\n<li>Uma po\u00e7a de solda \u00e9 formada a partir do eletrodo fundido e da superf\u00edcie met\u00e1lica. A esc\u00f3ria sobe \u00e0 superf\u00edcie e forma uma pel\u00edcula protetora. A solda ent\u00e3o se solidifica, formando uma junta soldada.<\/li>\n<\/ul>\n\n<!---<div class='top-banner-pages'>\n\n<\/div>-->\n\n\t\n<p>Ao soldar com um eletrodo consum\u00edvel em um g\u00e1s de prote\u00e7\u00e3o, o arame de solda apresenta composi\u00e7\u00e3o qu\u00edmica semelhante \u00e0 do metal a ser soldado. Gases inertes como h\u00e9lio, arg\u00f4nio e suas misturas s\u00e3o utilizados para soldar metais n\u00e3o ferrosos e suas ligas.<\/p>\n<p>Os par\u00e2metros da corrente afetam a profundidade de penetra\u00e7\u00e3o. Aumentar a corrente penetra mais profundamente no metal, enquanto diminu\u00ed-la faz o oposto. A magnitude da corrente n\u00e3o afeta a largura da solda, mas o tipo de corrente afeta. A solda fica mais estreita quando se utiliza corrente cont\u00ednua.<\/p>\n<p>O arco de soldagem tamb\u00e9m afeta a qualidade da solda. Quanto menor o arco, mais limpa \u00e9 a solda. O metal derrete suavemente e o n\u00famero de gotas de metal \u00e9 significativamente reduzido. Isso permite uma penetra\u00e7\u00e3o mais profunda. <strong>Soldagem a arco el\u00e9trico de metal com eletrodo consum\u00edvel <\/strong>tem suas vantagens:<\/p>\n<ul>\n<li>a capacidade de soldar em qualquer lugar e em qualquer posi\u00e7\u00e3o;<\/li>\n<li>Voc\u00ea pode soldar uma grande variedade de tipos de a\u00e7o;<\/li>\n<li>A soldagem \u00e9 bastante simples e f\u00e1cil de transportar.<\/li>\n<\/ul>\n<p>Desvantagens deste m\u00e9todo de soldagem:<\/p>\n<ul>\n<li>nocividade dos gases durante o trabalho;<\/li>\n<li>baixa efici\u00eancia e, em compara\u00e7\u00e3o com outros tipos de soldagem, baixa produtividade;<\/li>\n<\/ul>\n<p>A qualidade da solda depende das qualifica\u00e7\u00f5es do soldador.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-198 size-full aligncenter\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/technologiya_svarki_111.webp\" alt=\"Soldagem a arco el\u00e9trico de metal com eletrodo consum\u00edvel\" width=\"522\" height=\"298\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/technologiya_svarki_111.webp 522w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/technologiya_svarki_111-300x171.webp 300w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/technologiya_svarki_111-254x145.webp 254w\" sizes=\"auto, (max-width: 522px) 100vw, 522px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-199 size-full aligncenter\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/maxresdefault-2.webp\" alt=\"Soldagem a arco el\u00e9trico de metais\" width=\"1280\" height=\"720\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/maxresdefault-2.webp 1280w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/maxresdefault-2-300x169.webp 300w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/maxresdefault-2-768x432.webp 768w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/maxresdefault-2-1024x576.webp 1024w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/maxresdefault-2-254x143.webp 254w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>A soldagem a arco \u00e9 um m\u00e9todo de soldagem de metais, cuja ess\u00eancia \u00e9\u2026<\/p>","protected":false},"author":1,"featured_media":199,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-197","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-svarka-metallov"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u042d\u043b\u0435\u043a\u0442\u0440\u043e\u0434\u0443\u0433\u043e\u0432\u0430\u044f \u0441\u0432\u0430\u0440\u043a\u0430 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