{"id":623,"date":"2019-03-01T12:07:03","date_gmt":"2019-03-01T09:07:03","guid":{"rendered":"https:\/\/metallsmaster.ru\/?p=623"},"modified":"2020-11-02T11:35:41","modified_gmt":"2020-11-02T08:35:41","slug":"gazovaya-svarka-metallov","status":"publish","type":"post","link":"https:\/\/metallsmaster.pro\/pt\/soldagem-a-gas-de-metais\/","title":{"rendered":"Soldagem a g\u00e1s de metais"},"content":{"rendered":"<p><strong>Soldagem a g\u00e1s de metais - <\/strong>Soldagem \u00e9 o processo de fus\u00e3o de metais utilizando oxig\u00eanio e um g\u00e1s combust\u00edvel para fundi-los em n\u00edvel at\u00f4mico. O acetileno \u00e9 o principal g\u00e1s utilizado, enquanto propano, hidrog\u00eanio, gasolina e butano s\u00e3o menos comumente utilizados. O calor gerado durante a combust\u00e3o funde as bordas da superf\u00edcie e o material de adi\u00e7\u00e3o, formando uma po\u00e7a de fus\u00e3o. Dependendo da quantidade de oxig\u00eanio fornecida, a chama pode ser oxidante, normal ou redutora. A vareta de adi\u00e7\u00e3o \u00e9 selecionada com base na composi\u00e7\u00e3o do metal a ser soldado, e o di\u00e2metro \u00e9 determinado pela espessura do metal.<\/p>\n<p><strong>Soldagem a g\u00e1s de metais <\/strong>aquecendo o metal de forma suave e lenta, ele atinge um estado fundido, o que leva em considera\u00e7\u00e3o:<\/p>\n<ul>\n<li>espessura do a\u00e7o (0,2 - 5 mm), com o aumento da espessura seu desempenho diminui;<\/li>\n<li>metal n\u00e3o ferroso;<\/li>\n<li>metais para ferramentas que requerem aquecimento gradual e resfriamento lento;<\/li>\n<li>a\u00e7os especiais e ferro fundido que requerem pr\u00e9-aquecimento durante a soldagem.<\/li>\n<\/ul>\n<h2>\n\t<!--<div class='top-banner-pages'>\t\n\n\t<\/div>--->\n\t<\/h2>\n<h2>GOST para soldagem a g\u00e1s de metais<\/h2>\n<p>A soldagem de metais \u00e9 um processo que requer aten\u00e7\u00e3o especial \u00e0s precau\u00e7\u00f5es de seguran\u00e7a e implementa\u00e7\u00e3o cuidadosa desses requisitos. <strong>GOST para soldagem a g\u00e1s de metais <\/strong>imp\u00f5e in\u00fameros requisitos para a execu\u00e7\u00e3o de trabalhos de soldagem sem causar les\u00f5es. Os termos estabelecidos pela norma s\u00e3o obrigat\u00f3rios para uso em todos os tipos de documenta\u00e7\u00e3o. Um termo padr\u00e3o \u00e9 estabelecido para cada conceito individual, e o uso de um termo sin\u00f4nimo \u00e9 proibido; isso constitui uma viola\u00e7\u00e3o. Em livros de refer\u00eancia, os termos proibidos s\u00e3o designados como &quot;NDP&quot;.<\/p>\n<p>Aqui est\u00e3o alguns padr\u00f5es para equipamentos de g\u00e1s e corte de metal:<\/p>\n<ul>\n<li>GOST 4.41-85. Sistema de indicadores de qualidade de produtos. M\u00e1quinas de corte t\u00e9rmico para metais. Este GOST estabelece os requisitos b\u00e1sicos de qualidade para m\u00e1quinas de corte t\u00e9rmico estacion\u00e1rias para metais;<\/li>\n<li>GOST 1077-79 chama a aten\u00e7\u00e3o para o padr\u00e3o de tochas de chama \u00fanica destinadas \u00e0 soldagem manual de acetileno-oxig\u00eanio, soldagem, aquecimento e outros tipos de soldagem de metal;<\/li>\n<li>GOST 9356-75 define requisitos para mangueiras de soldagem com estrutura roscada, que s\u00e3o usadas para fornecer acetileno, butano, propano, oxig\u00eanio e outros gases para dispositivos de soldagem a g\u00e1s e corte de metais;<\/li>\n<li>GOST 949-73 se aplica a cilindros feitos de liga e a\u00e7o carbono de pequeno volume (12 litros) e m\u00e9dio (de 20 a 50 litros), cuja press\u00e3o de trabalho \u00e9 de at\u00e9 19,6 MPa e feitos de tubos sem costura, destinados ao armazenamento de gases comprimidos, gases liquefeitos e dissolvidos que podem suportar temperaturas de menos 50<sup>0 <\/sup>De a +60<sup>0 <\/sup>COM.<\/li>\n<\/ul>\n<p><strong>\n<!---<div class='top-banner-pages'>\n\n<\/div>-->\n\n\t<\/strong><\/p>\n<p><strong>GOST para soldagem a g\u00e1s de metais <\/strong>fornece uma garantia confi\u00e1vel de seguran\u00e7a ao realizar trabalhos de soldagem, desde que todos esses requisitos sejam atendidos.<\/p>\n<h3>Tecnologia de soldagem a g\u00e1s para metais<\/h3>\n<p><strong>Tecnologia de soldagem a g\u00e1s para metais <\/strong>inclui o seguinte:<\/p>\n<ul>\n<li>Boa prepara\u00e7\u00e3o da pe\u00e7a para soldagem;<\/li>\n<li>As bordas soldadas devem ser completamente limpas de manchas de \u00f3leo, sujeira, incrusta\u00e7\u00f5es e ferrugem. A largura da \u00e1rea limpa \u00e9 de 20 a 30 mm de cada lado. Limpe at\u00e9 que o metal brilhe. Isso pode ser feito com uma escova, pasta \u00e0 base de \u00e1cido ou \u00e1cido. Prepare as bordas da junta soldada;<\/li>\n<li>O modo de soldagem \u00e9 selecionado;<\/li>\n<li>Para isso, considere o tipo de metal a ser soldado e a finalidade do produto. A pot\u00eancia da tocha de soldagem, o tipo de chama, o di\u00e2metro da vareta de enchimento e a t\u00e9cnica de soldagem s\u00e3o levados em considera\u00e7\u00e3o;<\/li>\n<li>T\u00e9cnica de soldagem a g\u00e1s;<\/li>\n<\/ul>\n<p>A posi\u00e7\u00e3o do queimador, sua dire\u00e7\u00e3o. Do correto <strong>tecnologias de soldagem a g\u00e1s para metais <\/strong>Muito depende da qualidade e da produtividade. O \u00e2ngulo de inclina\u00e7\u00e3o depende do \u00e2ngulo do bico; para metais mais espessos, o \u00e2ngulo aumenta. Isso efetivamente concentra o aquecimento do metal em um \u00fanico ponto. O bico se move tanto transversal quanto longitudinalmente. O movimento prim\u00e1rio \u00e9 o longitudinal. O movimento transversal \u00e9 auxiliar e necess\u00e1rio para o aquecimento uniforme da borda.<\/p>\n<p>Vantagens da soldagem a g\u00e1s:<\/p>\n<ul>\n<li>um tipo simples de soldagem, e tamb\u00e9m n\u00e3o caro;<\/li>\n<li>a capacidade de comprar g\u00e1s em qualquer lugar;<\/li>\n<li>n\u00e3o h\u00e1 necessidade de uma fonte de energia potente.<\/li>\n<\/ul>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-625 alignleft\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/03\/\u0413\u0430\u0437\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-\u043c\u0435\u0442\u0430\u043b\u043b\u043e\u0432-\u0441\u0445\u0435\u043c\u0430.webp\" alt=\"Diagrama de soldagem a g\u00e1s de metais\" width=\"500\" height=\"173\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/03\/\u0413\u0430\u0437\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-\u043c\u0435\u0442\u0430\u043b\u043b\u043e\u0432-\u0441\u0445\u0435\u043c\u0430.webp 500w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/03\/\u0413\u0430\u0437\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-\u043c\u0435\u0442\u0430\u043b\u043b\u043e\u0432-\u0441\u0445\u0435\u043c\u0430-300x104.webp 300w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/03\/\u0413\u0430\u0437\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-\u043c\u0435\u0442\u0430\u043b\u043b\u043e\u0432-\u0441\u0445\u0435\u043c\u0430-254x88.webp 254w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>A soldagem a g\u00e1s de metais \u00e9 o processo de fus\u00e3o de metais usando oxig\u00eanio e um g\u00e1s combust\u00edvel,\u2026<\/p>","protected":false},"author":1,"featured_media":624,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-623","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=\"\u0413\u0430\u0437\u043e\u0432\u0430\u044f \u0441\u0432\u0430\u0440\u043a\u0430 \u043c\u0435\u0442\u0430\u043b\u043b\u043e\u0432, \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0438 \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u044b \u0441\u0432\u0430\u0440\u0438\u0432\u0430\u043d\u0438\u044f \u0433\u0430\u0437\u043e\u0432\u043e\u0439 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u043e\u0439\" \/>\n\t<meta name=\"robots\" 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