{"id":55676,"date":"2022-07-06T00:00:00","date_gmt":"2022-07-05T22:00:00","guid":{"rendered":"https:\/\/unm.fr\/non-classifiee\/nf-en-iso-astm-52925\/"},"modified":"2022-11-27T23:09:11","modified_gmt":"2022-11-27T21:09:11","slug":"nf-en-iso-astm-52925","status":"publish","type":"post","link":"https:\/\/unm.fr\/en\/focus-norme\/nf-en-iso-astm-52925\/","title":{"rendered":"NF EN ISO\/ASTM 52925 Qualification des mat\u00e9riaux pour la fusion laser de pi\u00e8ces sur lit de poudre polym\u00e8re"},"content":{"rendered":"<p>L\u2019ISO 52925 \u00e9tablit des param\u00e8tres et recommandations sp\u00e9cifiques pour la qualification des mat\u00e9riaux polym\u00e8res destin\u00e9s au frittage laser. Elle concerne principalement le mat\u00e9riau polyamide 12 (PA12) avec toutefois quelques r\u00e9f\u00e9rences au polyamide 11 (PA11).<\/p>\n<p>Cette norme traite de l&#8217;\u00e9chantillonnage (poudre vierge et de m\u00e9langes de poudres), du certificat d&#8217;essai en usine (distribution granulom\u00e9trique, teneur en monom\u00e8re r\u00e9siduel\/teneur en extrait) et des facteurs influen\u00e7ant aussi bien l&#8217;aptitude au traitement (aptitude \u00e0 l&#8217;\u00e9talement de la poudre, humidit\u00e9 relative de la poudre, distribution granulom\u00e9trique) que la qualit\u00e9 de la pi\u00e8ce (comportement de fusion, fluidit\u00e9).<\/p>\n<p>Les recommandations relatives au mesurage du rapport de Hausner, qui permet de faire une d\u00e9claration sur les caract\u00e9ristiques d&#8217;aptitude \u00e0 l&#8217;\u00e9talement d\u2019une poudre, \u00e0 la d\u00e9termination de l\u2019indice de fluidit\u00e9 en volume \u00e0 chaud et et aux essais interlaboratoires sont couvertes dans des annexes informatives.<\/p>\n<p>&nbsp;<\/p>\n<p>Cr\u00e9dit photo : SHUTTERSTOCK.<\/p>\n<p>Pour acheter la norme : <a href=\"https:\/\/www.boutique.afnor.org\/fr-fr\/norme\/nf-en-iso-astm-52925\/fabrication-additive-de-polymeres-matieres-premieres-qualification-des-mate\/fa197021\/325083?utm_source=UNM&amp;utm_medium=lien-texte&amp;utm_campaign=AffiliationUNM\" target=\"_blank\" rel=\"noopener\">NF EN ISO\/ASTM 52925<\/a>.<\/p>\n<p>Pour visualiser un extrait de la norme : <a href=\"https:\/\/www.boutique.afnor.org\/Store\/Preview\/DisplayExtract?ProductID=325083&amp;VersionID=6\" target=\"_blank\" rel=\"noopener\">NF EN ISO\/ASTM 52925<\/a>.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019ISO 52925 \u00e9tablit des param\u00e8tres et recommandations sp\u00e9cifiques pour la qualification des mat\u00e9riaux polym\u00e8res destin\u00e9s au frittage laser. Elle concerne principalement le mat\u00e9riau polyamide 12 (PA12) avec toutefois quelques r\u00e9f\u00e9rences au polyamide 11 (PA11). Cette norme traite de l&#8217;\u00e9chantillonnage (poudre vierge et de m\u00e9langes de poudres), du certificat d&#8217;essai en usine (distribution granulom\u00e9trique, teneur en [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":54690,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"date-de-webinaire":0,"heure-webinaire":"","duree-webinaire":"","lien-bouton-cta":"","footnotes":""},"categories":[38],"tags":[],"normes-associees":[3019],"thematique":[84],"class_list":["post-55676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-focus-norme","normes-associees-en-iso-astm-52925","thematique-fabrication-additive"],"_links":{"self":[{"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/posts\/55676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/comments?post=55676"}],"version-history":[{"count":1,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/posts\/55676\/revisions"}],"predecessor-version":[{"id":55874,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/posts\/55676\/revisions\/55874"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/media\/54690"}],"wp:attachment":[{"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/media?parent=55676"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/categories?post=55676"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/tags?post=55676"},{"taxonomy":"normes-associees","embeddable":true,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/normes-associees?post=55676"},{"taxonomy":"thematique","embeddable":true,"href":"https:\/\/unm.fr\/en\/wp-json\/wp\/v2\/thematique?post=55676"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}