{"id":1731,"date":"2021-12-29T12:44:58","date_gmt":"2021-12-29T12:44:58","guid":{"rendered":"https:\/\/novanta.com\/fr\/precision-manufacturing\/resources\/whitepapers\/traitement-optimal-du-polycarbonate-a-laide-de-lasers-au-co%e2%82%82\/"},"modified":"2026-09-02T11:02:30","modified_gmt":"2026-09-02T11:02:30","slug":"traitement-optimal-du-polycarbonate-a-laide-de-lasers-au-co2","status":"publish","type":"novanta_tech_paper","link":"https:\/\/novanta.com\/fr\/precision-manufacturing\/ressources\/documents-blancs\/traitement-optimal-du-polycarbonate-a-laide-de-lasers-au-co2\/","title":{"rendered":"Traitement optimal du polycarbonate \u00e0 l&rsquo;aide de lasers au CO\u2082"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"h-technical-paper-overview\">Pr\u00e9sentation de l&rsquo;article technique<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Traitement optimal du polycarbonate \u00e0 l&rsquo;aide de lasers \u00e0 CO\u2082<\/strong><br><em>Ce sont la longueur d&rsquo;onde et la fr\u00e9quence, et non la puissance, qui d\u00e9terminent la qualit\u00e9 des bords de coupe du polycarbonate.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le polycarbonate est le mat\u00e9riau id\u00e9al pour les verres de phares transparents, les caches d\u2019\u00e9cran et les bo\u00eetiers m\u00e9dicaux r\u00e9sistants \u2014 mais il est r\u00e9put\u00e9 pour \u00eatre difficile \u00e0 d\u00e9couper au laser. La longueur d\u2019onde standard de 10,6 \u00b5m du laser CO\u2082 est insuffisamment absorb\u00e9e par la mol\u00e9cule de polycarbonate, dissipe l\u2019\u00e9nergie dans le mat\u00e9riau environnant et provoque une d\u00e9composition de couleur jaune \u00e0 brune le long du bord de coupe. Pour les applications optiques o\u00f9 la coupe est visible, cette d\u00e9coloration constitue un v\u00e9ritable probl\u00e8me.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cet article technique pr\u00e9sente une comparaison syst\u00e9matique des lasers Synrad sur quatre param\u00e8tres variables : la longueur d\u2019onde (9,3 \u00b5m contre 10,6 \u00b5m), la fr\u00e9quence (de 1 kHz \u00e0 50 kHz), le type de gaz auxiliaire (air contre azote) et la pression du gaz auxiliaire (de 1 bar \u00e0 4 bars) \u2014 sur trois nuances de polycarbonate (Makrolon\u00ae 2405 standard, 2447 stabilis\u00e9 aux UV, 6555 ignifug\u00e9) afin d\u2019identifier la configuration permettant d\u2019obtenir des d\u00e9coupes nettes et incolores dans le polycarbonate.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-takeaways-include\">Principaux enseignements :<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pourquoi le polycarbonate se d\u00e9colore au niveau du bord de coupe \u2014 et comment les principes de l\u2019absorption physique sont \u00e0 l\u2019origine de ce ph\u00e9nom\u00e8ne<\/li>\n\n\n\n<li>Comment un fonctionnement quasi-continu (50 kHz+) \u00e9limine la d\u00e9coloration provoqu\u00e9e par la d\u00e9coupe puls\u00e9e \u00e0 basse fr\u00e9quence<\/li>\n\n\n\n<li>Quand choisir une longueur d&rsquo;onde de 9,3 \u00b5m pour la vitesse (70 mm\/s) plut\u00f4t qu&rsquo;une de 10,6 \u00b5m pour une neutralit\u00e9 absolue de la couleur (50 mm\/s)<\/li>\n\n\n\n<li>Quelle pression de gaz d\u2019assistance est importante (\u2265 4 bars) \u2014 et pourquoi l\u2019azote n\u2019offre aucun avantage par rapport \u00e0 l\u2019air comprim\u00e9<\/li>\n\n\n\n<li>Une recette pratique \u00e0 quatre param\u00e8tres test\u00e9e sur trois grades de PC Makrolon\u00ae (standard, stabilis\u00e9 aux UV, ignifuge)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00e9l\u00e9chargez le document technique complet pour obtenir les donn\u00e9es du spectre d\u2019absorption du polycarbonate, les comparaisons de d\u00e9coupe c\u00f4te \u00e0 c\u00f4te pour les quatre variables de param\u00e8tres, ainsi que la recette de param\u00e8tres valid\u00e9e que vous pouvez appliquer \u00e0 toute d\u00e9coupe au laser CO\u2082 du polycarbonate \u2014 avant que la d\u00e9composition jaune-brun n\u2019apparaisse sur vos \u00e9chantillons de production.  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pr\u00e9sentation de l&rsquo;article technique Traitement optimal du polycarbonate \u00e0 l&rsquo;aide de lasers \u00e0 CO\u2082Ce sont la longueur d&rsquo;onde et la fr\u00e9quence, et non la puissance, qui d\u00e9terminent la qualit\u00e9 des bords de coupe du polycarbonate. Le polycarbonate est le mat\u00e9riau id\u00e9al pour les verres de phares transparents, les caches d\u2019\u00e9cran et les bo\u00eetiers m\u00e9dicaux r\u00e9sistants [&hellip;]<\/p>\n","protected":false},"author":342,"featured_media":1057,"template":"","meta":{"_acf_changed":false,"card_thumbnail_id":0,"show_table_of_content":true},"class_list":["post-1731","novanta_tech_paper","type-novanta_tech_paper","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Optimal Polycarbonate Processing | Novanta Laser Solutions<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez comment r\u00e9gler la longueur d&#039;onde et la puissance d&#039;un syst\u00e8me de d\u00e9coupe laser au CO\u2082 afin d&#039;optimiser l&#039;usinage du polycarbonate dans le cadre d&#039;une production en grande s\u00e9rie.\" 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