O fabrico aditivo de metais evoluiu para um m\u00e9todo de produ\u00e7\u00e3o fundamental para a ind\u00fastria aeroespacial, implantes m\u00e9dicos, componentes energ\u00e9ticos e pe\u00e7as industriais de elevado valor. Este artigo apresenta uma compara\u00e7\u00e3o t\u00e9cnica exaustiva de Deposi\u00e7\u00e3o de energia dirigida (DED)<\/a>, Fus\u00e3o selectiva por laser (SLM)<\/a>, e Fus\u00e3o selectiva por feixe de electr\u00f5es (SEBM)<\/a>. Esclarece os princ\u00edpios de funcionamento, os sistemas de materiais, os limites de desempenho, os casos de utiliza\u00e7\u00e3o industrial e as estrat\u00e9gias de sele\u00e7\u00e3o de tecnologias.<\/p>\n\n\n\n O Metal AM evoluiu atrav\u00e9s de:<\/p>\n\n\n\n Objetivo: explicar o papel da engenharia e a l\u00f3gica de sele\u00e7\u00e3o de cada tecnologia.<\/p>\n\n\n\n Pontos fortes<\/strong>: maior detalhe e canais internos Pontos fortes<\/strong>: baixa tens\u00e3o residual, excelente para tit\u00e2nio Pontos fortes<\/strong>: pe\u00e7as grandes, repara\u00e7\u00e3o, multimaterial SLM, SEBM e DED complementam-se em vez de se substitu\u00edrem uns aos outros. Em conjunto, formam a espinha dorsal do fabrico industrial moderno de aditivos met\u00e1licos.<\/p>","protected":false},"excerpt":{"rendered":" Abstract Metal additive manufacturing has evolved into a key production method for aerospace, medical implants, energy components, and high-value industrial parts. This article provides a thorough technical comparison of Directed Energy Deposition (DED), Selective Laser Melting (SLM), and Selective Electron Beam Melting (SEBM). It clarifies working principles, material systems, performance boundaries, industrial use cases, and […]<\/p>\n","protected":false},"author":1,"featured_media":5542,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5,3],"tags":[102],"table_tags":[],"class_list":["post-5541","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-professional-knowledge","category-blog","tag-sheldon-li"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/posts\/5541","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/comments?post=5541"}],"version-history":[{"count":1,"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/posts\/5541\/revisions"}],"predecessor-version":[{"id":5543,"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/posts\/5541\/revisions\/5543"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/media\/5542"}],"wp:attachment":[{"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/media?parent=5541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/categories?post=5541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/tags?post=5541"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/www.greenstone-tech.com\/pt\/wp-json\/wp\/v2\/table_tags?post=5541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Cap\u00edtulo 1: Vis\u00e3o geral - A linhagem tecnol\u00f3gica da AM de metais<\/h5>\n\n\n\n
Da prototipagem \u00e0 produ\u00e7\u00e3o<\/h6>\n\n\n\n
\n
Divis\u00e3o t\u00e9cnica central<\/h6>\n\n\n\n
Fonte de energia<\/th> Cama de p\u00f3<\/th> Alimenta\u00e7\u00e3o direta<\/th><\/tr><\/thead> Laser<\/td> SLM<\/td> Laser-DED<\/td><\/tr> Feixe de electr\u00f5es<\/td> SEBM<\/td> EB-DED<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Cap\u00edtulo 2: Princ\u00edpios de funcionamento<\/h5>\n\n\n\n
SLM<\/h6>\n\n\n\n
\n
Materiais<\/strong>: a\u00e7o inoxid\u00e1vel, ligas de n\u00edquel, tit\u00e2nio, alum\u00ednio, CoCr<\/p>\n\n\n\nSEBM<\/h6>\n\n\n\n
\n
Materiais<\/strong>: Ti-6Al-4V, \u03b3-TiAl, ligas de n\u00edquel<\/p>\n\n\n\nDED<\/h6>\n\n\n\n
\n
Materiais<\/strong>: Ligas de Ti, ligas de n\u00edquel, a\u00e7os, cobre<\/p>\n\n\n\nCap\u00edtulo 3: Aferi\u00e7\u00e3o t\u00e9cnica<\/h5>\n\n\n\n
Categoria<\/th> SLM<\/th> SEBM<\/th> DED<\/th><\/tr><\/thead> Precis\u00e3o<\/td> Melhor<\/td> Alto<\/td> Moderado<\/td><\/tr> Tamanho da pe\u00e7a<\/td> M\u00e9dio<\/td> Grande<\/td> Muito grande<\/td><\/tr> Tens\u00e3o residual<\/td> Alto<\/td> Muito baixo<\/td> M\u00e9dio<\/td><\/tr> Multi-material<\/td> Emergentes<\/td> Limitada<\/td> Excelente<\/td><\/tr> Valor prim\u00e1rio<\/td> Pe\u00e7as finas complexas<\/td> Estruturas de tit\u00e2nio<\/td> Repara\u00e7\u00e3o + grandes constru\u00e7\u00f5es<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\nCap\u00edtulo 4: Aplica\u00e7\u00f5es<\/h5>\n\n\n\n
SLM<\/h6>\n\n\n\n
\n
SEBM<\/h6>\n\n\n\n
\n
DED<\/h6>\n\n\n\n
\n
Cap\u00edtulo 5: Sele\u00e7\u00e3o de tecnologias e perspectivas<\/h5>\n\n\n\n
Guia de sele\u00e7\u00e3o<\/h6>\n\n\n\n
\n
Tend\u00eancias<\/h6>\n\n\n\n
\n
Conclus\u00e3o<\/h6>\n\n\n\n