{"id":5692,"date":"2024-03-25T17:58:41","date_gmt":"2024-03-25T16:58:41","guid":{"rendered":"https:\/\/web.castfast.com\/2024\/03\/25\/quel-materiau-pour-le-moulage-de-fer-avec-impression-3d-sur-sable\/"},"modified":"2025-06-02T10:23:11","modified_gmt":"2025-06-02T08:23:11","slug":"quel-materiau-pour-le-moulage-de-fer-avec-impression-3d-sur-sable","status":"publish","type":"post","link":"https:\/\/www.castfast.com\/fr\/2024\/03\/25\/quel-materiau-pour-le-moulage-de-fer-avec-impression-3d-sur-sable\/","title":{"rendered":"Quel mat\u00e9riau pour le moulage de fer avec impression 3D sur sable ?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5692\" class=\"elementor elementor-5692 elementor-1364\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e26f9fb e-con-full e-flex e-con e-parent\" data-id=\"e26f9fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cdc031f elementor-widget__width-inherit elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"cdc031f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/05\/Untitled_1.36.1-scaled-1-jpg.webp\" class=\"attachment-full size-full wp-image-5693 not-transparent\" alt=\"\" srcset=\"https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/05\/Untitled_1.36.1-scaled-1-jpg.webp 1920w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/05\/Untitled_1.36.1-scaled-1-300x169.webp 300w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/05\/Untitled_1.36.1-scaled-1-1024x576.webp 1024w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/05\/Untitled_1.36.1-scaled-1-768x432.webp 768w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/05\/Untitled_1.36.1-scaled-1-1536x864.webp 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" data-has-transparency=\"false\" data-dominant-color=\"aa9277\" style=\"--dominant-color: #aa9277\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6542956 e-con-full e-flex e-con e-child\" data-id=\"6542956\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-36161e8 e-con-full e-flex e-con e-child\" data-id=\"36161e8\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-74b0da0 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"74b0da0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Quel mat\u00e9riau pour le moulage de fer avec impression 3D sur sable ?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-febf211 elementor-align-center elementor-widget elementor-widget-post-info\" data-id=\"febf211\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-7f530f1 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t<a href=\"https:\/\/www.castfast.com\/fr\/2024\/03\/25\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>mars 25, 2024<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-6863c75 elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t<a href=\"https:\/\/www.castfast.com\/fr\/author\/marcel\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\tMarcel Tschillaev\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-3994668 elementor-inline-item\" itemprop=\"about\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg 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fill=\"white\"><\/rect><\/clipPath><\/defs><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-terms\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-post-info__terms-list\">\n\t\t\t\t<a href=\"https:\/\/www.castfast.com\/fr\/category\/connaissance\/\" class=\"elementor-post-info__terms-list-item\">Connaissance<\/a>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-33916e9 e-flex e-con-boxed e-con e-parent\" data-id=\"33916e9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f31d56b elementor-widget elementor-widget-theme-post-excerpt\" data-id=\"f31d56b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-excerpt.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\tQuels sont les mat\u00e9riaux disponibles pour le moulage de fonte \u00e0 partir d'une imprimante 3D \u00e0 sable ? EN-GJL ou plut\u00f4t EN-GJS ? Que faut-il prendre en compte lors du choix ? L'\u00e9quipe CASTFAST vous parle de la pratique.   \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1a37bef e-con-full e-flex e-con e-child\" data-id=\"1a37bef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-622654dc elementor-widget elementor-widget-text-editor\" data-id=\"622654dc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Les concepteurs qui commandent des pi\u00e8ces moul\u00e9es par injection de sable en 3D pour la premi\u00e8re fois s&rsquo;interrogent souvent sur les mat\u00e9riaux disponibles et utilisables. La r\u00e9ponse est simple : tout ce qui est possible avec le moulage en sable conventionnel l&rsquo;est \u00e9galement avec l&rsquo;impression 3D en sable, de l&rsquo;aluminium \u00e0 l&rsquo;acier en passant par le fer. <\/p><p>La r\u00e9ponse est plus nuanc\u00e9e : outre les propri\u00e9t\u00e9s souhait\u00e9es pour la future pi\u00e8ce moul\u00e9e, la g\u00e9om\u00e9trie de la pi\u00e8ce joue un r\u00f4le important dans le choix pr\u00e9cis du mat\u00e9riau, afin de garantir un remplissage propre du moule et un bon processus de solidification. Comme l&rsquo;impression 3D en sable ouvre de nouvelles possibilit\u00e9s pour la g\u00e9om\u00e9trie des pi\u00e8ces moul\u00e9es, elle a aussi des implications pour le choix des mat\u00e9riaux. Nous allons les aborder bri\u00e8vement ici pour la fonte de fer. Nous aborderons l&rsquo;aluminium et l&rsquo;acier dans une autre section.   <\/p><h2>Fonte de fer avec moules en sable imprim\u00e9s : Fonte grise versus fonte \u00e0 graphite sph\u00e9ro\u00efdal<\/h2><p>Dans la cat\u00e9gorie de la fonte, il existe bien s\u00fbr une multitude de mat\u00e9riaux qui peuvent \u00eatre affin\u00e9s et ajust\u00e9s. Chez CASTFAST, nous proposons actuellement en standard les groupes de mat\u00e9riaux GJL (fonte \u00e0 graphite lamellaire) et GJS (fonte \u00e0 graphite sph\u00e9ro\u00efdal). <\/p><p>Le GJL est le mat\u00e9riau classique de la \u00ab fonte grise \u00bb. Elle est id\u00e9ale pour les pi\u00e8ces qui n\u00e9cessitent plus d&rsquo;usinabilit\u00e9 que de r\u00e9sistance extr\u00eame. La fonte \u00e0 graphite sph\u00e9ro\u00efdal (GJS), en revanche, est la plus polyvalente &#8211; plus solide et plus r\u00e9sistante, elle constitue un bon choix pour les applications plus exigeantes. Elle peut souvent remplacer l&rsquo;acier, ce qui fait une \u00e9norme diff\u00e9rence lors du moulage. Il est plus facile de couler du fer que de l&rsquo;acier. Le carbone dans la fonte \u00ab cro\u00eet \u00bb, c&rsquo;est-\u00e0-dire qu&rsquo;il augmente de volume, en se solidifiant, ce qui cr\u00e9e une pression et rend la structure plus dense. Cela ne se produit pas avec l&rsquo;acier. Il en r\u00e9sulte, du point de vue de la technique de coul\u00e9e, un retrait qu&rsquo;il faut contr\u00f4ler \u00e0 grands frais.       <\/p><h2>Petite th\u00e9orie de la r\u00e9sistance des mat\u00e9riaux<\/h2><p>Un point important est la r\u00e9sistance sp\u00e9cifique \u00e0 la compression et \u00e0 la traction de la fonte. Les mat\u00e9riaux GJL ont une excellente r\u00e9sistance \u00e0 la compression, ce qui les rend id\u00e9aux pour les applications n\u00e9cessitant une grande r\u00e9sistance \u00e0 la pression. Les mat\u00e9riaux GJS, quant \u00e0 eux, se caract\u00e9risent par une r\u00e9sistance \u00e0 la traction sup\u00e9rieure, ce qui les rend indispensables pour les applications o\u00f9 le mat\u00e9riau doit r\u00e9sister \u00e0 des forces de traction.  <\/p><p>Ces diff\u00e9rences dans les propri\u00e9t\u00e9s de r\u00e9sistance nous permettent de proposer une solution adapt\u00e9e \u00e0 presque toutes les exigences. Ainsi, un GJL peut n&rsquo;avoir qu&rsquo;une r\u00e9sistance \u00e0 la traction de 200 MPa, mais une r\u00e9sistance \u00e0 la compression allant jusqu&rsquo;\u00e0 800 MPa. Cela peut \u00eatre exploit\u00e9 dans la construction ! En outre, le GJL se caract\u00e9rise par une tr\u00e8s bonne conductivit\u00e9 thermique et une grande capacit\u00e9 d&rsquo;amortissement. Ce sont justement ses propri\u00e9t\u00e9s d&rsquo;amortissement des vibrations qui font du GJL un mat\u00e9riau tr\u00e8s appr\u00e9ci\u00e9 pour les pi\u00e8ces m\u00e9caniques.    <\/p><h2>Dans les moindres d\u00e9tails : Mat\u00e9riaux et impression 3D sur sable<\/h2><p>Gr\u00e2ce \u00e0 la pr\u00e9cision du processus et \u00e0 la libert\u00e9 de conception, les moules cr\u00e9\u00e9s par l&rsquo;imprimante 3D \u00e0 sable permettent d&rsquo;obtenir des pi\u00e8ces moul\u00e9es plus complexes, plus fines et plus d\u00e9licates. Pouss\u00e9 \u00e0 l&rsquo;extr\u00eame, ce proc\u00e9d\u00e9 a des implications importantes pour le choix des mat\u00e9riaux. <\/p><p>En principe, les mat\u00e9riaux GJL s&rsquo;\u00e9coulent mieux. Ils sont plus \u00ab\u00a0fluides\u00a0\u00bb au niveau micro. Le GJL peut donc bien remplir des formes complexes avec des parois tr\u00e8s fines. Le probl\u00e8me est alors le suivant : paroi mince signifie refroidissement rapide, ce qui peut rapidement rendre un mat\u00e9riau GJL tr\u00e8s fragile. Les mat\u00e9riaux GJS ont \u00e9galement ce probl\u00e8me de fragilit\u00e9. Mais ils sont intrins\u00e8quement plus r\u00e9sistants. Ils sont plus tol\u00e9rants au refroidissement rapide en ce qui concerne leurs propri\u00e9t\u00e9s structurelles, mais ils sont \u00e9galement plus r\u00e9sistants \u00e0 l&rsquo;\u00e9tat liquide et ne s&rsquo;\u00e9coulent pas aussi bien.      <\/p><p>C&rsquo;est pourquoi, dans la pratique, nous pesons toujours le pour et le contre afin de trouver le bon mat\u00e9riau. En tant que concepteur, vous devez cependant commencer par les propri\u00e9t\u00e9s souhait\u00e9es pour la pi\u00e8ce. Nous nous occupons des consid\u00e9rations techniques de fonderie dans les cas limites. Jusqu&rsquo;\u00e0 pr\u00e9sent, nous avons toujours trouv\u00e9 une solution !   <\/p><p>Int\u00e9ress\u00e9 par un essai ? Cliquez ici pour acc\u00e9der \u00e0 notre <a href=\"https:\/\/www.castfast.com\/fr\/?page_id=5331\"><strong>Calculateur<\/strong><\/a>. Pour en savoir plus sur les mat\u00e9riaux en d\u00e9tail, consultez le tableau ci-dessous. Vous avez encore des questions ? Nous sommes l\u00e0 pour vous aider <strong><a href=\"https:\/\/www.castfast.com\/#contact\">Nous nous ferons un plaisir de vous r\u00e9pondre sur<\/a><\/strong>.    <\/p><p> <\/p><h2><span class=\"TextRun MacChromeBold SCXW189604702 BCX9\" lang=\"DE-DE\" xml:lang=\"DE-DE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW189604702 BCX9\" data-ccp-parastyle=\"heading 2\">Les<\/span><span class=\"NormalTextRun SCXW189604702 BCX9\" data-ccp-parastyle=\"heading 2\"> mat\u00e9riaux sp\u00e9cifiques<\/span><span class=\"NormalTextRun SCXW189604702 BCX9\" data-ccp-parastyle=\"heading 2\"> dans le site<\/span><span class=\"NormalTextRun SCXW189604702 BCX9\" data-ccp-parastyle=\"heading 2\"> Aper\u00e7u<\/span><\/span><\/h2><p> <\/p><h3>GJL 200<\/h3><p><strong>Domaines d&rsquo;application<\/strong><br>Composants l\u00e9g\u00e8rement charg\u00e9s (en traction) tels que petits bo\u00eetiers, b\u00e2tis de machines l\u00e9g\u00e8res, capots, cadres de machines \u00e9lectriques.<\/p><p><strong>Propri\u00e9t\u00e9s<\/strong><br>Bonne usinabilit\u00e9, faible r\u00e9sistance.<\/p><hr><h3>GJL 250<\/h3><p><strong>Domaines d&rsquo;application<br><\/strong>Pi\u00e8ces soumises \u00e0 des charges (de traction) moyennes, telles que les grands b\u00e2tis de machines, les carters de grandes bo\u00eetes de vitesses, les carters de moteurs, les corps de pompes, les corps de soupapes, les plaques de base.<\/p><p><strong>Propri\u00e9t\u00e9s<\/strong><br>Meilleure r\u00e9sistance que la GJL 200, bonne usinabilit\u00e9.<\/p><hr><h3>GJL 300<\/h3><p><strong>Domaines d&rsquo;application<br><\/strong>Pi\u00e8ces de machines soumises \u00e0 des charges plus \u00e9lev\u00e9es et n\u00e9cessitant une plus grande r\u00e9sistance, comme les grands carters d&rsquo;engrenages, les b\u00e2tis de presse, les bancs de machines lourds, les grands corps de pompes.<\/p><p><strong>Propri\u00e9t\u00e9s<\/strong><br>R\u00e9sistance plus \u00e9lev\u00e9e que la GJL 250, toujours bonne usinabilit\u00e9.<\/p><hr><h3>GJS 400<\/h3><p><strong>Domaines d&rsquo;application<br><\/strong>Pi\u00e8ces dans l&rsquo;industrie automobile (corps d&rsquo;essieu, tambours de frein, pi\u00e8ces de direction), pi\u00e8ces de machines soumises \u00e0 des charges moyennes.<\/p><p><strong>Propri\u00e9t\u00e9s<\/strong><br>Bonne r\u00e9sistance et t\u00e9nacit\u00e9, meilleure r\u00e9sistance \u00e0 l&rsquo;usure que le GJL.<\/p><hr><h3>GJS 500<\/h3><p><strong>Domaines d&rsquo;application<br><\/strong>Composants automobiles fortement sollicit\u00e9s (essieux de camions, pi\u00e8ces de transmission), composants de machines lourdes, machines agricoles, composants de machines de construction.<\/p><p><strong>Propri\u00e9t\u00e9s<\/strong><br>Encore plus r\u00e9sistant que le GJS 400, mais moins tenace. Se casse donc plus t\u00f4t. <\/p><hr><h3>GJS 600<\/h3><p><strong>Domaines d&rsquo;application<br><\/strong>Pi\u00e8ces tr\u00e8s fortement sollicit\u00e9es, telles que les pi\u00e8ces automobiles lourdes, les grandes bo\u00eetes de vitesses industrielles, les composants pour machines lourdes et engins de chantier.<\/p><p><strong>Propri\u00e9t\u00e9s<\/strong><br>Haute r\u00e9sistance et tr\u00e8s bonne t\u00e9nacit\u00e9.<\/p><hr><h3>GJS 700<\/h3><p><strong>Domaines d&rsquo;application<\/strong><\/p><p>Composants soumis \u00e0 des contraintes extr\u00eames dans des applications exigeantes telles que les pi\u00e8ces d&rsquo;engins miniers, les composants d&rsquo;engins de construction lourds, les pi\u00e8ces soumises \u00e0 de fortes contraintes dans la production d&rsquo;\u00e9nergie.<\/p><p><strong>Caract\u00e9ristiques<\/strong><br>R\u00e9sistance maximale, mais t\u00e9nacit\u00e9 minimale. Les fraises s&rsquo;y cassent litt\u00e9ralement les dents. Tr\u00e8s dur, donc peu d&rsquo;usure.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a231219 elementor-widget elementor-widget-post-navigation\" data-id=\"a231219\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-navigation.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-post-navigation\" role=\"navigation\" aria-label=\"Navigation de publication\">\n\t\t\t<div class=\"elementor-post-navigation__prev elementor-post-navigation__link\">\n\t\t\t\t<a href=\"https:\/\/www.castfast.com\/fr\/2024\/03\/25\/moules-a-la-demande-ultra-rapides-castfast-pour-les-fonderies\/\" rel=\"prev\"><span class=\"post-navigation__arrow-wrapper post-navigation__arrow-prev\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-double-left\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M223.7 239l136-136c9.4-9.4 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2025\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Quels sont les mat\u00e9riaux disponibles pour le moulage de fonte \u00e0 partir d&rsquo;une imprimante 3D \u00e0 sable ? EN-GJL ou plut\u00f4t EN-GJS ? Que faut-il prendre en compte lors du choix ? 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